2018-01-09 22:44:43 +08:00
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< div class = "line" > < a name = "l00002" > < / a > < span class = "lineno" > 2< / span >   < span class = "comment" > * Copyright (c) 2015-present, Facebook, Inc.< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > * All rights reserved.< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / span >   < span class = "comment" > * This source code is licensed under the BSD+Patents license found in the< / span > < / div >
< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < span class = "comment" > * LICENSE file in the root directory of this source tree.< / span > < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "preprocessor" > #include " IndexHNSW.h" < / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #include < cstdlib> < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "preprocessor" > #include < cassert> < / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include < cstring> < / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "preprocessor" > #include < cstdio> < / span > < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #include < cmath> < / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "preprocessor" > #include < omp.h> < / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "preprocessor" > #include < unordered_set> < / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "preprocessor" > #include < queue> < / span > < / div >
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< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "preprocessor" > #include < sys/types.h> < / span > < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "preprocessor" > #include < sys/stat.h> < / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "preprocessor" > #include < unistd.h> < / span > < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "preprocessor" > #include < stdint.h> < / span > < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "preprocessor" > #include < immintrin.h> < / span > < / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < span class = "preprocessor" > #include " utils.h" < / span > < / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "preprocessor" > #include " Heap.h" < / span > < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < span class = "preprocessor" > #include " FaissAssert.h" < / span > < / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "preprocessor" > #include " IndexFlat.h" < / span > < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "preprocessor" > #include " IndexIVFPQ.h" < / span > < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "keyword" > extern< / span > < span class = "stringliteral" > " C" < / span > {< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "comment" > /* declare BLAS functions, see http://www.netlib.org/clapack/cblas/ */< / span > < / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < span class = "keywordtype" > int< / span > sgemm_ (< span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *transa, < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *transb, FINTEGER *m, FINTEGER *< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   n, FINTEGER *k, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *alpha, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *a,< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   FINTEGER *lda, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *b, FINTEGER *< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   ldb, < span class = "keywordtype" > float< / span > *beta, < span class = "keywordtype" > float< / span > *c, FINTEGER *ldc);< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   < / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   }< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < span class = "keyword" > namespace < / span > faiss {< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "comment" > * Auxiliary structures< / span > < / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "comment" > /// set implementation optimized for fast access.< / span > < / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1VisitedTable.html" > 54< / a > < / span >   < span class = "comment" > < / span > < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1VisitedTable.html" > VisitedTable< / a > {< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   std::vector< uint8_t> visited;< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "keywordtype" > int< / span > visno;< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < a class = "code" href = "structfaiss_1_1VisitedTable.html" > VisitedTable< / a > (< span class = "keywordtype" > int< / span > size):< / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   visited(size), visno(1)< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   {}< span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "comment" > /// set flog #no to true< / span > < / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1VisitedTable.html#a387b6428f4bfa44495c70a5f1f45f853" > 62< / a > < / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1VisitedTable.html#a387b6428f4bfa44495c70a5f1f45f853" > set< / a > (< span class = "keywordtype" > int< / span > no) {< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   visited[no] = visno;< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   }< span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < span class = "comment" > /// get flag #no< / span > < / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1VisitedTable.html#a18a972137362ff04a38943d66fc19dcb" > 66< / a > < / span >   < span class = "comment" > < / span > < span class = "keywordtype" > bool< / span > < span class = "keyword" > get< / span > (< span class = "keywordtype" > int< / span > no) < span class = "keyword" > const< / span > {< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < span class = "keywordflow" > return< / span > visited[no] == visno;< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   }< span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < span class = "comment" > /// reset all flags to false< / span > < / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1VisitedTable.html#a76223893c8c3a577473092b3bb8a2446" > 70< / a > < / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1VisitedTable.html#a76223893c8c3a577473092b3bb8a2446" > advance< / a > () {< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   visno++;< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < span class = "keywordflow" > if< / span > (visno == 250) {< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < span class = "comment" > // 250 rather than 255 because sometimes we use visno and visno+1< / span > < / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   memset (visited.data(), 0, < span class = "keyword" > sizeof< / span > (visited[0]) * visited.size());< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   visno = 1;< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   }< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   }< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   };< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   < span class = "keyword" > typedef< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#a153fa41ad41a4905aa60683360a3cdf0" > HNSW::idx_t< / a > idx_t;< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < span class = "keyword" > typedef< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#ae1342fc2f07c325598a73b733e88ee74" > HNSW::storage_idx_t< / a > storage_idx_t;< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < span class = "keyword" > typedef< / span > HNSW::DistanceComputer DistanceComputer;< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < span class = "comment" > // typedef ::faiss::VisitedTable VisitedTable;< / span > < / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < span class = "comment" > /// to sort pairs of (id, distance) from nearest to fathest or the reverse< / span > < / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "comment" > < / span > < span class = "keyword" > struct < / span > NodeDistCloser {< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < span class = "keywordtype" > float< / span > d;< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "keywordtype" > int< / span > id;< / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   NodeDistCloser(< span class = "keywordtype" > float< / span > d, < span class = "keywordtype" > int< / span > < span class = "keywordtype" > id< / span > ): d(d), id(id) {}< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "keywordtype" > bool< / span > operator< (< span class = "keyword" > const< / span > NodeDistCloser & obj1)< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > d < obj1.d; }< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   };< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "keyword" > struct < / span > NodeDistFarther {< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "keywordtype" > float< / span > d;< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "keywordtype" > int< / span > id;< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   NodeDistFarther(< span class = "keywordtype" > float< / span > d, < span class = "keywordtype" > int< / span > < span class = "keywordtype" > id< / span > ): d(d), id(id) {}< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < span class = "keywordtype" > bool< / span > operator< (< span class = "keyword" > const< / span > NodeDistFarther & obj1)< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > d > obj1.d; }< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   };< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   < span class = "comment" > /** Heap structure that allows fast */< / span > < / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < span class = "keyword" > struct < / span > MinimaxHeap {< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "keywordtype" > int< / span > n;< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < span class = "keywordtype" > int< / span > k;< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "keywordtype" > int< / span > nvalid;< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   < / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   std::vector< storage_idx_t> ids;< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   std::vector< float> dis;< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < span class = "keyword" > typedef< / span > < a class = "code" href = "structfaiss_1_1CMax.html" > faiss::CMax< float, storage_idx_t> < / a > HC;< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "keyword" > explicit< / span > MinimaxHeap(< span class = "keywordtype" > int< / span > n): n(n), k(0), nvalid(0), ids(n), dis(n) {}< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   < span class = "keywordtype" > void< / span > push(storage_idx_t i, < span class = "keywordtype" > float< / span > v)< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   {< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   < span class = "keywordflow" > if< / span > (k == n) {< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < span class = "keywordflow" > if< / span > (v > = dis[0]) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   faiss::heap_pop< HC> (k--, dis.data(), ids.data());< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   nvalid--;< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   }< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   faiss::heap_push< HC> (++k, dis.data(), ids.data(), v, i);< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   nvalid++;< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   }< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   < span class = "keywordtype" > float< / span > max()< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   < span class = "keywordflow" > return< / span > dis[0];< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   }< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "keywordtype" > int< / span > size()< span class = "keyword" > const < / span > {< span class = "keywordflow" > return< / span > nvalid;}< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   < / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   < span class = "keywordtype" > void< / span > clear() {nvalid = k = 0; }< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < span class = "keywordtype" > int< / span > pop_min(< span class = "keywordtype" > float< / span > *vmin_out = < span class = "keyword" > nullptr< / span > )< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   {< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   assert(k > 0);< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < span class = "comment" > // returns min. This is an O(n) operation< / span > < / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "keywordtype" > int< / span > i = k - 1;< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   < span class = "keywordflow" > while< / span > (i > = 0) {< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < span class = "keywordflow" > if< / span > (ids[i] != -1) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   i--;< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   }< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   < span class = "keywordflow" > if< / span > (i == -1) < span class = "keywordflow" > return< / span > -1;< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < span class = "keywordtype" > int< / span > imin = i;< / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   < span class = "keywordtype" > float< / span > vmin = dis[i];< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   i--;< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   < span class = "keywordflow" > while< / span > (i > = 0) {< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < span class = "keywordflow" > if< / span > (ids[i] != -1 & & dis[i] < vmin) {< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   vmin = dis[i];< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   imin = i;< / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   }< / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   i--;< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   }< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   < span class = "keywordflow" > if< / span > (vmin_out) *vmin_out = vmin;< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   < span class = "keywordtype" > int< / span > ret = ids[imin];< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   ids[imin] = -1;< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   nvalid --;< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   < span class = "keywordflow" > return< / span > ret;< / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   }< / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   < / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   < span class = "keywordtype" > int< / span > count_below(< span class = "keywordtype" > float< / span > thresh) {< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   < span class = "keywordtype" > float< / span > n_below = 0;< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < k; i++) {< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < span class = "keywordflow" > if< / span > (dis[i] < thresh)< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   n_below++;< / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   }< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   < span class = "keywordflow" > return< / span > n_below;< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   }< / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   < / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   };< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   < / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   < / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   < span class = "comment" > * Addition subroutines< / span > < / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < span class = "comment" > /** Enumerate vertices from farthest to nearest from query, keep a< / span > < / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < span class = "comment" > * neighbor only if there is no previous neighbor that is closer to< / span > < / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   < span class = "comment" > * that vertex than the query.< / span > < / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   < span class = "keywordtype" > void< / span > shrink_neighbor_list(DistanceComputer & qdis,< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   std::priority_queue< NodeDistFarther> & input,< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   std::vector< NodeDistFarther> & output,< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   < span class = "keywordtype" > int< / span > max_size)< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   {< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   < span class = "keywordflow" > while< / span > (input.size() > 0) {< / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   NodeDistFarther v1 = input.top();< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   input.pop();< / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   < span class = "keywordtype" > float< / span > dist_v1_q = v1.d;< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   < / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   < span class = "keywordtype" > bool< / span > good = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < span class = "keywordflow" > for< / span > (NodeDistFarther v2 : output) {< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   < span class = "keywordtype" > float< / span > dist_v1_v2 = qdis.symmetric_dis(v2.id, v1.id);< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   < span class = "keywordflow" > if< / span > (dist_v1_v2 < dist_v1_q) {< / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   good = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   }< / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   }< / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   < span class = "keywordflow" > if< / span > (good) {< / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   output.push_back(v1);< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   < span class = "keywordflow" > if< / span > (output.size() > = max_size)< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   }< / div >
< div class = "line" > < a name = "l00208" > < / a > < span class = "lineno" > 208< / span >   }< / div >
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   }< / div >
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   < / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   < / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   < / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   < span class = "comment" > /// remove neighbors from the list to make it smaller than max_size< / span > < / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > shrink_neighbor_list(DistanceComputer & qdis,< / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   std::priority_queue< NodeDistCloser> & resultSet1,< / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   < span class = "keywordtype" > int< / span > max_size)< / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   {< / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   < / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   < span class = "keywordflow" > if< / span > (resultSet1.size() < max_size) {< / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   }< / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   std::priority_queue< NodeDistFarther> resultSet;< / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   std::vector< NodeDistFarther> returnlist;< / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   < / div >
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   < span class = "keywordflow" > while< / span > (resultSet1.size() > 0) {< / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   resultSet.emplace(resultSet1.top().d, resultSet1.top().id);< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   resultSet1.pop();< / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   }< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   < / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   shrink_neighbor_list (qdis, resultSet, returnlist, max_size);< / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   < / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   < span class = "keywordflow" > for< / span > (NodeDistFarther curen2 : returnlist) {< / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   resultSet1.emplace(curen2.d, curen2.id);< / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   }< / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   < / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   }< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   < / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   < span class = "comment" > /// add a link between two elements, possibly shrinking the list< / span > < / div >
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   < span class = "comment" > /// of links to make room for it.< / span > < / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > add_link(HNSW & hnsw,< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   DistanceComputer & qdis,< / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   storage_idx_t src, storage_idx_t dest,< / div >
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   < span class = "keywordtype" > int< / span > level)< / div >
< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > 246< / span >   {< / div >
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   hnsw.neighbor_range(src, level, & begin, & end);< / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   < span class = "keywordflow" > if< / span > (hnsw.neighbors[end - 1] == -1) {< / div >
< div class = "line" > < a name = "l00250" > < / a > < span class = "lineno" > 250< / span >   < span class = "comment" > // there is enough room, find a slot to add it< / span > < / div >
< div class = "line" > < a name = "l00251" > < / a > < span class = "lineno" > 251< / span >   < span class = "keywordtype" > size_t< / span > i = end;< / div >
< div class = "line" > < a name = "l00252" > < / a > < span class = "lineno" > 252< / span >   < span class = "keywordflow" > while< / span > (i > begin) {< / div >
< div class = "line" > < a name = "l00253" > < / a > < span class = "lineno" > 253< / span >   < span class = "keywordflow" > if< / span > (hnsw.neighbors[i - 1] != -1) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00254" > < / a > < span class = "lineno" > 254< / span >   i--;< / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   }< / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   hnsw.neighbors[i] = dest;< / div >
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00258" > < / a > < span class = "lineno" > 258< / span >   }< / div >
< div class = "line" > < a name = "l00259" > < / a > < span class = "lineno" > 259< / span >   < / div >
< div class = "line" > < a name = "l00260" > < / a > < span class = "lineno" > 260< / span >   < span class = "comment" > // otherwise we let them fight out which to keep< / span > < / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   < / div >
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   < span class = "comment" > // copy to resultSet...< / span > < / div >
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   std::priority_queue< NodeDistCloser> resultSet;< / div >
< div class = "line" > < a name = "l00264" > < / a > < span class = "lineno" > 264< / span >   resultSet.emplace(qdis.symmetric_dis(src, dest), dest);< / div >
< div class = "line" > < a name = "l00265" > < / a > < span class = "lineno" > 265< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = begin; i < end; i++) { < span class = "comment" > // HERE WAS THE BUG< / span > < / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   storage_idx_t neigh = hnsw.neighbors[i];< / div >
< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   resultSet.emplace(qdis.symmetric_dis(src, neigh), neigh);< / div >
< div class = "line" > < a name = "l00268" > < / a > < span class = "lineno" > 268< / span >   }< / div >
< div class = "line" > < a name = "l00269" > < / a > < span class = "lineno" > 269< / span >   < / div >
< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   shrink_neighbor_list(qdis, resultSet, end - begin);< / div >
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   < / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   < span class = "comment" > // ...and back< / span > < / div >
< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   < span class = "keywordtype" > size_t< / span > i = begin;< / div >
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   < span class = "keywordflow" > while< / span > (resultSet.size()) {< / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   hnsw.neighbors[i++] = resultSet.top().id;< / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   resultSet.pop();< / div >
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   }< / div >
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   < span class = "comment" > // they may have shrunk more than just by 1 element< / span > < / div >
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   < span class = "keywordflow" > while< / span > (i < end) {< / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   hnsw.neighbors[i++] = -1;< / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   }< / div >
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   }< / div >
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   < span class = "comment" > /// search neighbors on a single level, starting from an entry point< / span > < / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > search_neighbors_to_add(HNSW & hnsw,< / div >
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   DistanceComputer & qdis,< / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   std::priority_queue< NodeDistCloser> & results,< / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   < span class = "keywordtype" > int< / span > entry_point,< / div >
< div class = "line" > < a name = "l00289" > < / a > < span class = "lineno" > 289< / span >   < span class = "keywordtype" > float< / span > d_entry_point,< / div >
< div class = "line" > < a name = "l00290" > < / a > < span class = "lineno" > 290< / span >   < span class = "keywordtype" > int< / span > level,< / div >
< div class = "line" > < a name = "l00291" > < / a > < span class = "lineno" > 291< / span >   VisitedTable & vt)< / div >
< div class = "line" > < a name = "l00292" > < / a > < span class = "lineno" > 292< / span >   {< / div >
< div class = "line" > < a name = "l00293" > < / a > < span class = "lineno" > 293< / span >   < span class = "comment" > // top is nearest candidate< / span > < / div >
< div class = "line" > < a name = "l00294" > < / a > < span class = "lineno" > 294< / span >   std::priority_queue< NodeDistFarther> candidates;< / div >
< div class = "line" > < a name = "l00295" > < / a > < span class = "lineno" > 295< / span >   < / div >
< div class = "line" > < a name = "l00296" > < / a > < span class = "lineno" > 296< / span >   NodeDistFarther ev(d_entry_point, entry_point);< / div >
< div class = "line" > < a name = "l00297" > < / a > < span class = "lineno" > 297< / span >   candidates.push(ev);< / div >
< div class = "line" > < a name = "l00298" > < / a > < span class = "lineno" > 298< / span >   results.emplace(d_entry_point, entry_point);< / div >
< div class = "line" > < a name = "l00299" > < / a > < span class = "lineno" > 299< / span >   vt.set(entry_point);< / div >
< div class = "line" > < a name = "l00300" > < / a > < span class = "lineno" > 300< / span >   < / div >
< div class = "line" > < a name = "l00301" > < / a > < span class = "lineno" > 301< / span >   < span class = "keywordflow" > while< / span > (!candidates.empty()) {< / div >
< div class = "line" > < a name = "l00302" > < / a > < span class = "lineno" > 302< / span >   < span class = "comment" > // get nearest< / span > < / div >
< div class = "line" > < a name = "l00303" > < / a > < span class = "lineno" > 303< / span >   < span class = "keyword" > const< / span > NodeDistFarther & currEv = candidates.top();< / div >
< div class = "line" > < a name = "l00304" > < / a > < span class = "lineno" > 304< / span >   < / div >
< div class = "line" > < a name = "l00305" > < / a > < span class = "lineno" > 305< / span >   < span class = "keywordflow" > if< / span > (currEv.d > results.top().d) {< / div >
< div class = "line" > < a name = "l00306" > < / a > < span class = "lineno" > 306< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00307" > < / a > < span class = "lineno" > 307< / span >   }< / div >
< div class = "line" > < a name = "l00308" > < / a > < span class = "lineno" > 308< / span >   < span class = "keywordtype" > int< / span > currNode = currEv.id;< / div >
< div class = "line" > < a name = "l00309" > < / a > < span class = "lineno" > 309< / span >   candidates.pop();< / div >
< div class = "line" > < a name = "l00310" > < / a > < span class = "lineno" > 310< / span >   < / div >
< div class = "line" > < a name = "l00311" > < / a > < span class = "lineno" > 311< / span >   < span class = "comment" > // loop over neighbors< / span > < / div >
< div class = "line" > < a name = "l00312" > < / a > < span class = "lineno" > 312< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l00313" > < / a > < span class = "lineno" > 313< / span >   hnsw.neighbor_range(currNode, level, & begin, & end);< / div >
< div class = "line" > < a name = "l00314" > < / a > < span class = "lineno" > 314< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = begin; i < end; i++) {< / div >
< div class = "line" > < a name = "l00315" > < / a > < span class = "lineno" > 315< / span >   storage_idx_t nodeId = hnsw.neighbors[i];< / div >
< div class = "line" > < a name = "l00316" > < / a > < span class = "lineno" > 316< / span >   < span class = "keywordflow" > if< / span > (nodeId < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00317" > < / a > < span class = "lineno" > 317< / span >   < span class = "keywordflow" > if< / span > (vt.get(nodeId)) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00318" > < / a > < span class = "lineno" > 318< / span >   vt.set(nodeId);< / div >
< div class = "line" > < a name = "l00319" > < / a > < span class = "lineno" > 319< / span >   < / div >
< div class = "line" > < a name = "l00320" > < / a > < span class = "lineno" > 320< / span >   < span class = "keywordtype" > float< / span > dis = qdis(nodeId);< / div >
< div class = "line" > < a name = "l00321" > < / a > < span class = "lineno" > 321< / span >   NodeDistFarther evE1(dis, nodeId);< / div >
< div class = "line" > < a name = "l00322" > < / a > < span class = "lineno" > 322< / span >   < / div >
< div class = "line" > < a name = "l00323" > < / a > < span class = "lineno" > 323< / span >   < span class = "keywordflow" > if< / span > (results.size() < hnsw.efConstruction ||< / div >
< div class = "line" > < a name = "l00324" > < / a > < span class = "lineno" > 324< / span >   results.top().d > dis) {< / div >
< div class = "line" > < a name = "l00325" > < / a > < span class = "lineno" > 325< / span >   < / div >
< div class = "line" > < a name = "l00326" > < / a > < span class = "lineno" > 326< / span >   results.emplace(dis, nodeId);< / div >
< div class = "line" > < a name = "l00327" > < / a > < span class = "lineno" > 327< / span >   candidates.emplace(dis, nodeId);< / div >
< div class = "line" > < a name = "l00328" > < / a > < span class = "lineno" > 328< / span >   < span class = "keywordflow" > if< / span > (results.size() > hnsw.efConstruction) {< / div >
< div class = "line" > < a name = "l00329" > < / a > < span class = "lineno" > 329< / span >   results.pop();< / div >
< div class = "line" > < a name = "l00330" > < / a > < span class = "lineno" > 330< / span >   }< / div >
< div class = "line" > < a name = "l00331" > < / a > < span class = "lineno" > 331< / span >   }< / div >
< div class = "line" > < a name = "l00332" > < / a > < span class = "lineno" > 332< / span >   }< / div >
< div class = "line" > < a name = "l00333" > < / a > < span class = "lineno" > 333< / span >   }< / div >
< div class = "line" > < a name = "l00334" > < / a > < span class = "lineno" > 334< / span >   vt.advance();< / div >
< div class = "line" > < a name = "l00335" > < / a > < span class = "lineno" > 335< / span >   }< / div >
< div class = "line" > < a name = "l00336" > < / a > < span class = "lineno" > 336< / span >   < / div >
< div class = "line" > < a name = "l00337" > < / a > < span class = "lineno" > 337< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00338" > < / a > < span class = "lineno" > 338< / span >   < span class = "comment" > /// Finds neighbors and builds links with them, starting from an entry< / span > < / div >
< div class = "line" > < a name = "l00339" > < / a > < span class = "lineno" > 339< / span >   < span class = "comment" > /// point. The own neighbor list is assumed to be locked.< / span > < / div >
< div class = "line" > < a name = "l00340" > < / a > < span class = "lineno" > 340< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > add_links_starting_from(HNSW & hnsw,< / div >
< div class = "line" > < a name = "l00341" > < / a > < span class = "lineno" > 341< / span >   DistanceComputer & ptdis,< / div >
< div class = "line" > < a name = "l00342" > < / a > < span class = "lineno" > 342< / span >   storage_idx_t pt_id,< / div >
< div class = "line" > < a name = "l00343" > < / a > < span class = "lineno" > 343< / span >   storage_idx_t nearest,< / div >
< div class = "line" > < a name = "l00344" > < / a > < span class = "lineno" > 344< / span >   < span class = "keywordtype" > float< / span > d_nearest,< / div >
< div class = "line" > < a name = "l00345" > < / a > < span class = "lineno" > 345< / span >   < span class = "keywordtype" > int< / span > level,< / div >
< div class = "line" > < a name = "l00346" > < / a > < span class = "lineno" > 346< / span >   omp_lock_t * locks,< / div >
< div class = "line" > < a name = "l00347" > < / a > < span class = "lineno" > 347< / span >   VisitedTable & vt)< / div >
< div class = "line" > < a name = "l00348" > < / a > < span class = "lineno" > 348< / span >   {< / div >
< div class = "line" > < a name = "l00349" > < / a > < span class = "lineno" > 349< / span >   < / div >
< div class = "line" > < a name = "l00350" > < / a > < span class = "lineno" > 350< / span >   std::priority_queue< NodeDistCloser> link_targets;< / div >
< div class = "line" > < a name = "l00351" > < / a > < span class = "lineno" > 351< / span >   < / div >
< div class = "line" > < a name = "l00352" > < / a > < span class = "lineno" > 352< / span >   search_neighbors_to_add(< / div >
< div class = "line" > < a name = "l00353" > < / a > < span class = "lineno" > 353< / span >   hnsw, ptdis, link_targets, nearest, d_nearest,< / div >
< div class = "line" > < a name = "l00354" > < / a > < span class = "lineno" > 354< / span >   level, vt);< / div >
< div class = "line" > < a name = "l00355" > < / a > < span class = "lineno" > 355< / span >   < / div >
< div class = "line" > < a name = "l00356" > < / a > < span class = "lineno" > 356< / span >   < span class = "comment" > // but we can afford only this many neighbors< / span > < / div >
< div class = "line" > < a name = "l00357" > < / a > < span class = "lineno" > 357< / span >   < span class = "keywordtype" > int< / span > M = hnsw.nb_neighbors(level);< / div >
< div class = "line" > < a name = "l00358" > < / a > < span class = "lineno" > 358< / span >   < / div >
< div class = "line" > < a name = "l00359" > < / a > < span class = "lineno" > 359< / span >   shrink_neighbor_list(ptdis, link_targets, M);< / div >
< div class = "line" > < a name = "l00360" > < / a > < span class = "lineno" > 360< / span >   < / div >
< div class = "line" > < a name = "l00361" > < / a > < span class = "lineno" > 361< / span >   < span class = "keywordflow" > while< / span > (!link_targets.empty()) {< / div >
< div class = "line" > < a name = "l00362" > < / a > < span class = "lineno" > 362< / span >   < span class = "keywordtype" > int< / span > other_id = link_targets.top().id;< / div >
< div class = "line" > < a name = "l00363" > < / a > < span class = "lineno" > 363< / span >   < / div >
< div class = "line" > < a name = "l00364" > < / a > < span class = "lineno" > 364< / span >   omp_set_lock(& locks[other_id]);< / div >
< div class = "line" > < a name = "l00365" > < / a > < span class = "lineno" > 365< / span >   add_link(hnsw, ptdis, other_id, pt_id, level);< / div >
< div class = "line" > < a name = "l00366" > < / a > < span class = "lineno" > 366< / span >   omp_unset_lock(& locks[other_id]);< / div >
< div class = "line" > < a name = "l00367" > < / a > < span class = "lineno" > 367< / span >   < / div >
< div class = "line" > < a name = "l00368" > < / a > < span class = "lineno" > 368< / span >   add_link(hnsw, ptdis, pt_id, other_id, level);< / div >
< div class = "line" > < a name = "l00369" > < / a > < span class = "lineno" > 369< / span >   < / div >
< div class = "line" > < a name = "l00370" > < / a > < span class = "lineno" > 370< / span >   link_targets.pop();< / div >
< div class = "line" > < a name = "l00371" > < / a > < span class = "lineno" > 371< / span >   }< / div >
< div class = "line" > < a name = "l00372" > < / a > < span class = "lineno" > 372< / span >   }< / div >
< div class = "line" > < a name = "l00373" > < / a > < span class = "lineno" > 373< / span >   < / div >
< div class = "line" > < a name = "l00374" > < / a > < span class = "lineno" > 374< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l00375" > < / a > < span class = "lineno" > 375< / span >   < span class = "comment" > * Searching subroutines< / span > < / div >
< div class = "line" > < a name = "l00376" > < / a > < span class = "lineno" > 376< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l00377" > < / a > < span class = "lineno" > 377< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00378" > < / a > < span class = "lineno" > 378< / span >   < span class = "comment" > /// greedily update a nearest vector at a given level< / span > < / div >
< div class = "line" > < a name = "l00379" > < / a > < span class = "lineno" > 379< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > greedy_update_nearest(< span class = "keyword" > const< / span > HNSW & hnsw,< / div >
< div class = "line" > < a name = "l00380" > < / a > < span class = "lineno" > 380< / span >   DistanceComputer & qdis,< / div >
< div class = "line" > < a name = "l00381" > < / a > < span class = "lineno" > 381< / span >   < span class = "keywordtype" > int< / span > level,< / div >
< div class = "line" > < a name = "l00382" > < / a > < span class = "lineno" > 382< / span >   storage_idx_t & nearest,< / div >
< div class = "line" > < a name = "l00383" > < / a > < span class = "lineno" > 383< / span >   < span class = "keywordtype" > float< / span > & d_nearest)< / div >
< div class = "line" > < a name = "l00384" > < / a > < span class = "lineno" > 384< / span >   {< / div >
< div class = "line" > < a name = "l00385" > < / a > < span class = "lineno" > 385< / span >   < span class = "keywordflow" > for< / span > (;;) {< / div >
< div class = "line" > < a name = "l00386" > < / a > < span class = "lineno" > 386< / span >   storage_idx_t prev_nearest = nearest;< / div >
< div class = "line" > < a name = "l00387" > < / a > < span class = "lineno" > 387< / span >   < / div >
< div class = "line" > < a name = "l00388" > < / a > < span class = "lineno" > 388< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l00389" > < / a > < span class = "lineno" > 389< / span >   hnsw.neighbor_range(nearest, level, & begin, & end);< / div >
< div class = "line" > < a name = "l00390" > < / a > < span class = "lineno" > 390< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = begin; i < end; i++) {< / div >
< div class = "line" > < a name = "l00391" > < / a > < span class = "lineno" > 391< / span >   storage_idx_t v = hnsw.neighbors[i];< / div >
< div class = "line" > < a name = "l00392" > < / a > < span class = "lineno" > 392< / span >   < span class = "keywordflow" > if< / span > (v < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00393" > < / a > < span class = "lineno" > 393< / span >   < span class = "keywordtype" > float< / span > dis = qdis(v);< / div >
< div class = "line" > < a name = "l00394" > < / a > < span class = "lineno" > 394< / span >   < span class = "keywordflow" > if< / span > (dis < d_nearest) {< / div >
< div class = "line" > < a name = "l00395" > < / a > < span class = "lineno" > 395< / span >   nearest = v;< / div >
< div class = "line" > < a name = "l00396" > < / a > < span class = "lineno" > 396< / span >   d_nearest = dis;< / div >
< div class = "line" > < a name = "l00397" > < / a > < span class = "lineno" > 397< / span >   }< / div >
< div class = "line" > < a name = "l00398" > < / a > < span class = "lineno" > 398< / span >   }< / div >
< div class = "line" > < a name = "l00399" > < / a > < span class = "lineno" > 399< / span >   < span class = "keywordflow" > if< / span > (nearest == prev_nearest) {< / div >
< div class = "line" > < a name = "l00400" > < / a > < span class = "lineno" > 400< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00401" > < / a > < span class = "lineno" > 401< / span >   }< / div >
< div class = "line" > < a name = "l00402" > < / a > < span class = "lineno" > 402< / span >   }< / div >
< div class = "line" > < a name = "l00403" > < / a > < span class = "lineno" > 403< / span >   < / div >
< div class = "line" > < a name = "l00404" > < / a > < span class = "lineno" > 404< / span >   }< / div >
< div class = "line" > < a name = "l00405" > < / a > < span class = "lineno" > 405< / span >   < / div >
< div class = "line" > < a name = "l00406" > < / a > < span class = "lineno" > 406< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00407" > < / a > < span class = "lineno" > 407< / span >   < span class = "comment" > /** Do a BFS on the candidates list */< / span > < / div >
< div class = "line" > < a name = "l00408" > < / a > < span class = "lineno" > 408< / span >   < / div >
< div class = "line" > < a name = "l00409" > < / a > < span class = "lineno" > 409< / span >   < span class = "keywordtype" > int< / span > search_from_candidates(< span class = "keyword" > const< / span > HNSW & hnsw,< / div >
< div class = "line" > < a name = "l00410" > < / a > < span class = "lineno" > 410< / span >   DistanceComputer & qdis, < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l00411" > < / a > < span class = "lineno" > 411< / span >   idx_t *I, < span class = "keywordtype" > float< / span > * D,< / div >
< div class = "line" > < a name = "l00412" > < / a > < span class = "lineno" > 412< / span >   MinimaxHeap & candidates,< / div >
< div class = "line" > < a name = "l00413" > < / a > < span class = "lineno" > 413< / span >   VisitedTable & vt,< / div >
< div class = "line" > < a name = "l00414" > < / a > < span class = "lineno" > 414< / span >   < span class = "keywordtype" > int< / span > level, < span class = "keywordtype" > int< / span > nres_in = 0)< / div >
< div class = "line" > < a name = "l00415" > < / a > < span class = "lineno" > 415< / span >   {< / div >
< div class = "line" > < a name = "l00416" > < / a > < span class = "lineno" > 416< / span >   < span class = "keywordtype" > int< / span > nres = nres_in;< / div >
< div class = "line" > < a name = "l00417" > < / a > < span class = "lineno" > 417< / span >   < span class = "keywordtype" > int< / span > ndis = 0;< / div >
< div class = "line" > < a name = "l00418" > < / a > < span class = "lineno" > 418< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < candidates.size(); i++) {< / div >
< div class = "line" > < a name = "l00419" > < / a > < span class = "lineno" > 419< / span >   idx_t v1 = candidates.ids[i];< / div >
< div class = "line" > < a name = "l00420" > < / a > < span class = "lineno" > 420< / span >   < span class = "keywordtype" > float< / span > d = candidates.dis[i];< / div >
< div class = "line" > < a name = "l00421" > < / a > < span class = "lineno" > 421< / span >   FAISS_ASSERT(v1 > = 0);< / div >
< div class = "line" > < a name = "l00422" > < / a > < span class = "lineno" > 422< / span >   < span class = "keywordflow" > if< / span > (nres < k) {< / div >
< div class = "line" > < a name = "l00423" > < / a > < span class = "lineno" > 423< / span >   faiss::maxheap_push (++nres, D, I, d, v1);< / div >
< div class = "line" > < a name = "l00424" > < / a > < span class = "lineno" > 424< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (d < D[0]) {< / div >
< div class = "line" > < a name = "l00425" > < / a > < span class = "lineno" > 425< / span >   faiss::maxheap_pop (nres--, D, I);< / div >
< div class = "line" > < a name = "l00426" > < / a > < span class = "lineno" > 426< / span >   faiss::maxheap_push (++nres, D, I, d, v1);< / div >
< div class = "line" > < a name = "l00427" > < / a > < span class = "lineno" > 427< / span >   }< / div >
< div class = "line" > < a name = "l00428" > < / a > < span class = "lineno" > 428< / span >   vt.set(v1);< / div >
< div class = "line" > < a name = "l00429" > < / a > < span class = "lineno" > 429< / span >   }< / div >
< div class = "line" > < a name = "l00430" > < / a > < span class = "lineno" > 430< / span >   < / div >
< div class = "line" > < a name = "l00431" > < / a > < span class = "lineno" > 431< / span >   < span class = "keywordtype" > bool< / span > do_dis_check = hnsw.check_relative_distance;< / div >
< div class = "line" > < a name = "l00432" > < / a > < span class = "lineno" > 432< / span >   < span class = "keywordtype" > int< / span > nstep = 0;< / div >
< div class = "line" > < a name = "l00433" > < / a > < span class = "lineno" > 433< / span >   < / div >
< div class = "line" > < a name = "l00434" > < / a > < span class = "lineno" > 434< / span >   < span class = "keywordflow" > while< / span > (candidates.size() > 0) {< / div >
< div class = "line" > < a name = "l00435" > < / a > < span class = "lineno" > 435< / span >   < span class = "keywordtype" > float< / span > d0 = 0;< / div >
< div class = "line" > < a name = "l00436" > < / a > < span class = "lineno" > 436< / span >   < span class = "keywordtype" > int< / span > v0 = candidates.pop_min(& d0);< / div >
< div class = "line" > < a name = "l00437" > < / a > < span class = "lineno" > 437< / span >   < / div >
< div class = "line" > < a name = "l00438" > < / a > < span class = "lineno" > 438< / span >   < span class = "keywordflow" > if< / span > (do_dis_check) {< / div >
< div class = "line" > < a name = "l00439" > < / a > < span class = "lineno" > 439< / span >   < span class = "comment" > // tricky stopping condition: there are more that ef< / span > < / div >
< div class = "line" > < a name = "l00440" > < / a > < span class = "lineno" > 440< / span >   < span class = "comment" > // distances that are processed already that are smaller< / span > < / div >
< div class = "line" > < a name = "l00441" > < / a > < span class = "lineno" > 441< / span >   < span class = "comment" > // than d0< / span > < / div >
< div class = "line" > < a name = "l00442" > < / a > < span class = "lineno" > 442< / span >   < / div >
< div class = "line" > < a name = "l00443" > < / a > < span class = "lineno" > 443< / span >   < span class = "keywordtype" > int< / span > n_dis_below = candidates.count_below(d0);< / div >
< div class = "line" > < a name = "l00444" > < / a > < span class = "lineno" > 444< / span >   < span class = "keywordflow" > if< / span > (n_dis_below > = hnsw.efSearch) {< / div >
< div class = "line" > < a name = "l00445" > < / a > < span class = "lineno" > 445< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00446" > < / a > < span class = "lineno" > 446< / span >   }< / div >
< div class = "line" > < a name = "l00447" > < / a > < span class = "lineno" > 447< / span >   }< / div >
< div class = "line" > < a name = "l00448" > < / a > < span class = "lineno" > 448< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l00449" > < / a > < span class = "lineno" > 449< / span >   hnsw.neighbor_range(v0, level, & begin, & end);< / div >
< div class = "line" > < a name = "l00450" > < / a > < span class = "lineno" > 450< / span >   < / div >
< div class = "line" > < a name = "l00451" > < / a > < span class = "lineno" > 451< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l00452" > < / a > < span class = "lineno" > 452< / span >   < span class = "keywordtype" > int< / span > v1 = hnsw.neighbors[j];< / div >
< div class = "line" > < a name = "l00453" > < / a > < span class = "lineno" > 453< / span >   < span class = "keywordflow" > if< / span > (v1 < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00454" > < / a > < span class = "lineno" > 454< / span >   < span class = "keywordflow" > if< / span > (vt.get(v1)) {< / div >
< div class = "line" > < a name = "l00455" > < / a > < span class = "lineno" > 455< / span >   < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00456" > < / a > < span class = "lineno" > 456< / span >   }< / div >
< div class = "line" > < a name = "l00457" > < / a > < span class = "lineno" > 457< / span >   vt.set(v1);< / div >
< div class = "line" > < a name = "l00458" > < / a > < span class = "lineno" > 458< / span >   ndis++;< / div >
< div class = "line" > < a name = "l00459" > < / a > < span class = "lineno" > 459< / span >   < span class = "keywordtype" > float< / span > d = qdis(v1);< / div >
< div class = "line" > < a name = "l00460" > < / a > < span class = "lineno" > 460< / span >   < span class = "keywordflow" > if< / span > (nres < k) {< / div >
< div class = "line" > < a name = "l00461" > < / a > < span class = "lineno" > 461< / span >   faiss::maxheap_push (++nres, D, I, d, v1);< / div >
< div class = "line" > < a name = "l00462" > < / a > < span class = "lineno" > 462< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (d < D[0]) {< / div >
< div class = "line" > < a name = "l00463" > < / a > < span class = "lineno" > 463< / span >   faiss::maxheap_pop (nres--, D, I);< / div >
< div class = "line" > < a name = "l00464" > < / a > < span class = "lineno" > 464< / span >   faiss::maxheap_push (++nres, D, I, d, v1);< / div >
< div class = "line" > < a name = "l00465" > < / a > < span class = "lineno" > 465< / span >   }< / div >
< div class = "line" > < a name = "l00466" > < / a > < span class = "lineno" > 466< / span >   candidates.push(v1, d);< / div >
< div class = "line" > < a name = "l00467" > < / a > < span class = "lineno" > 467< / span >   }< / div >
< div class = "line" > < a name = "l00468" > < / a > < span class = "lineno" > 468< / span >   < / div >
< div class = "line" > < a name = "l00469" > < / a > < span class = "lineno" > 469< / span >   nstep++;< / div >
< div class = "line" > < a name = "l00470" > < / a > < span class = "lineno" > 470< / span >   < span class = "keywordflow" > if< / span > (!do_dis_check & & nstep > hnsw.efSearch) {< / div >
< div class = "line" > < a name = "l00471" > < / a > < span class = "lineno" > 471< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00472" > < / a > < span class = "lineno" > 472< / span >   }< / div >
< div class = "line" > < a name = "l00473" > < / a > < span class = "lineno" > 473< / span >   }< / div >
< div class = "line" > < a name = "l00474" > < / a > < span class = "lineno" > 474< / span >   < / div >
< div class = "line" > < a name = "l00475" > < / a > < span class = "lineno" > 475< / span >   < span class = "keywordflow" > if< / span > (level == 0) {< / div >
< div class = "line" > < a name = "l00476" > < / a > < span class = "lineno" > 476< / span >   < span class = "preprocessor" > #pragma omp critical< / span > < / div >
< div class = "line" > < a name = "l00477" > < / a > < span class = "lineno" > 477< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l00478" > < / a > < span class = "lineno" > 478< / span >   hnsw_stats.n1 ++;< / div >
< div class = "line" > < a name = "l00479" > < / a > < span class = "lineno" > 479< / span >   < span class = "keywordflow" > if< / span > (candidates.size() == 0)< / div >
< div class = "line" > < a name = "l00480" > < / a > < span class = "lineno" > 480< / span >   hnsw_stats.n2 ++;< / div >
< div class = "line" > < a name = "l00481" > < / a > < span class = "lineno" > 481< / span >   hnsw_stats.n3 += ndis;< / div >
< div class = "line" > < a name = "l00482" > < / a > < span class = "lineno" > 482< / span >   }< / div >
< div class = "line" > < a name = "l00483" > < / a > < span class = "lineno" > 483< / span >   }< / div >
< div class = "line" > < a name = "l00484" > < / a > < span class = "lineno" > 484< / span >   < / div >
< div class = "line" > < a name = "l00485" > < / a > < span class = "lineno" > 485< / span >   < span class = "keywordflow" > return< / span > nres;< / div >
< div class = "line" > < a name = "l00486" > < / a > < span class = "lineno" > 486< / span >   }< / div >
< div class = "line" > < a name = "l00487" > < / a > < span class = "lineno" > 487< / span >   < / div >
< div class = "line" > < a name = "l00488" > < / a > < span class = "lineno" > 488< / span >   < / div >
< div class = "line" > < a name = "l00489" > < / a > < span class = "lineno" > 489< / span >   } < span class = "comment" > // anonymous namespace< / span > < / div >
< div class = "line" > < a name = "l00490" > < / a > < span class = "lineno" > 490< / span >   < / div >
< div class = "line" > < a name = "l00491" > < / a > < span class = "lineno" > 491< / span >   < / div >
< div class = "line" > < a name = "l00492" > < / a > < span class = "lineno" > 492< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l00493" > < / a > < span class = "lineno" > 493< / span >   < span class = "comment" > * HNSW structure implementation< / span > < / div >
< div class = "line" > < a name = "l00494" > < / a > < span class = "lineno" > 494< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l00495" > < / a > < span class = "lineno" > 495< / span >   < / div >
< div class = "line" > < a name = "l00496" > < / a > < span class = "lineno" > 496< / span >   < / div >
< div class = "line" > < a name = "l00497" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HNSW.html#ad497ea80f352c33242ba7835370c2dba" > 497< / a > < / span >   < span class = "keywordtype" > int< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#ad497ea80f352c33242ba7835370c2dba" > HNSW::nb_neighbors< / a > (< span class = "keywordtype" > int< / span > layer_no)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00498" > < / a > < span class = "lineno" > 498< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00499" > < / a > < span class = "lineno" > 499< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#a1c258bb88aae9b1a754ab4690d85ed41" > cum_nneighbor_per_level< / a > [layer_no + 1] -< / div >
< div class = "line" > < a name = "l00500" > < / a > < span class = "lineno" > 500< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a1c258bb88aae9b1a754ab4690d85ed41" > cum_nneighbor_per_level< / a > [layer_no];< / div >
< div class = "line" > < a name = "l00501" > < / a > < span class = "lineno" > 501< / span >   }< / div >
< div class = "line" > < a name = "l00502" > < / a > < span class = "lineno" > 502< / span >   < / div >
< div class = "line" > < a name = "l00503" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HNSW.html#afdb5a17487296267efaaa94e6a08996d" > 503< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#afdb5a17487296267efaaa94e6a08996d" > HNSW::set_nb_neighbors< / a > (< span class = "keywordtype" > int< / span > level_no, < span class = "keywordtype" > int< / span > n)< / div >
< div class = "line" > < a name = "l00504" > < / a > < span class = "lineno" > 504< / span >   {< / div >
< div class = "line" > < a name = "l00505" > < / a > < span class = "lineno" > 505< / span >   FAISS_THROW_IF_NOT(< a class = "code" href = "structfaiss_1_1HNSW.html#a44847954c98957404829182c7db1b8af" > levels< / a > .size() == 0);< / div >
< div class = "line" > < a name = "l00506" > < / a > < span class = "lineno" > 506< / span >   < span class = "keywordtype" > int< / span > cur_n = < a class = "code" href = "structfaiss_1_1HNSW.html#ad497ea80f352c33242ba7835370c2dba" > nb_neighbors< / a > (level_no);< / div >
< div class = "line" > < a name = "l00507" > < / a > < span class = "lineno" > 507< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = level_no + 1; i < < a class = "code" href = "structfaiss_1_1HNSW.html#a1c258bb88aae9b1a754ab4690d85ed41" > cum_nneighbor_per_level< / a > .size(); i++) {< / div >
< div class = "line" > < a name = "l00508" > < / a > < span class = "lineno" > 508< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a1c258bb88aae9b1a754ab4690d85ed41" > cum_nneighbor_per_level< / a > [i] += n - cur_n;< / div >
< div class = "line" > < a name = "l00509" > < / a > < span class = "lineno" > 509< / span >   }< / div >
< div class = "line" > < a name = "l00510" > < / a > < span class = "lineno" > 510< / span >   }< / div >
< div class = "line" > < a name = "l00511" > < / a > < span class = "lineno" > 511< / span >   < / div >
< div class = "line" > < a name = "l00512" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HNSW.html#a49b512eaaa54ead77b564cad8e3e6ebd" > 512< / a > < / span >   < span class = "keywordtype" > int< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#a49b512eaaa54ead77b564cad8e3e6ebd" > HNSW::cum_nb_neighbors< / a > (< span class = "keywordtype" > int< / span > layer_no)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00513" > < / a > < span class = "lineno" > 513< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00514" > < / a > < span class = "lineno" > 514< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#a1c258bb88aae9b1a754ab4690d85ed41" > cum_nneighbor_per_level< / a > [layer_no];< / div >
< div class = "line" > < a name = "l00515" > < / a > < span class = "lineno" > 515< / span >   }< / div >
< div class = "line" > < a name = "l00516" > < / a > < span class = "lineno" > 516< / span >   < / div >
< div class = "line" > < a name = "l00517" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HNSW.html#aa3ae6a80d358e59e3af23f918253f61d" > 517< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#aa3ae6a80d358e59e3af23f918253f61d" > HNSW::neighbor_range< / a > (idx_t no, < span class = "keywordtype" > int< / span > layer_no,< / div >
< div class = "line" > < a name = "l00518" > < / a > < span class = "lineno" > 518< / span >   < span class = "keywordtype" > size_t< / span > * begin, < span class = "keywordtype" > size_t< / span > * end)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00519" > < / a > < span class = "lineno" > 519< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00520" > < / a > < span class = "lineno" > 520< / span >   < span class = "keywordtype" > size_t< / span > o = < a class = "code" href = "structfaiss_1_1HNSW.html#a0b456c521194903b29ce7c157539d771" > offsets< / a > [no];< / div >
< div class = "line" > < a name = "l00521" > < / a > < span class = "lineno" > 521< / span >   *begin = o + < a class = "code" href = "structfaiss_1_1HNSW.html#a49b512eaaa54ead77b564cad8e3e6ebd" > cum_nb_neighbors< / a > (layer_no);< / div >
< div class = "line" > < a name = "l00522" > < / a > < span class = "lineno" > 522< / span >   *end = o + < a class = "code" href = "structfaiss_1_1HNSW.html#a49b512eaaa54ead77b564cad8e3e6ebd" > cum_nb_neighbors< / a > (layer_no + 1);< / div >
< div class = "line" > < a name = "l00523" > < / a > < span class = "lineno" > 523< / span >   }< / div >
< div class = "line" > < a name = "l00524" > < / a > < span class = "lineno" > 524< / span >   < / div >
< div class = "line" > < a name = "l00525" > < / a > < span class = "lineno" > 525< / span >   < / div >
< div class = "line" > < a name = "l00526" > < / a > < span class = "lineno" > 526< / span >   < / div >
< div class = "line" > < a name = "l00527" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HNSW.html#a1fc852810a2497a8eb2c41635ec05520" > 527< / a > < / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a1fc852810a2497a8eb2c41635ec05520" > HNSW::HNSW< / a > (< span class = "keywordtype" > int< / span > M): rng(12345) {< / div >
< div class = "line" > < a name = "l00528" > < / a > < span class = "lineno" > 528< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#ae7d955690da5d6376c203e81e124ba94" > set_default_probas< / a > (M, 1.0 / log(M));< / div >
< div class = "line" > < a name = "l00529" > < / a > < span class = "lineno" > 529< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#afba18a290f5f759a8a7a64ed35b950eb" > max_level< / a > = -1;< / div >
< div class = "line" > < a name = "l00530" > < / a > < span class = "lineno" > 530< / span >   entry_point = -1;< / div >
< div class = "line" > < a name = "l00531" > < / a > < span class = "lineno" > 531< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a6d1cb35c4220bf554af90133c71ae04f" > efSearch< / a > = 16;< / div >
< div class = "line" > < a name = "l00532" > < / a > < span class = "lineno" > 532< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#adbf81f0b21102b942182c904892e0858" > check_relative_distance< / a > = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00533" > < / a > < span class = "lineno" > 533< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#aa7309dd7826761def38233c8bbbc0c63" > efConstruction< / a > = 40;< / div >
< div class = "line" > < a name = "l00534" > < / a > < span class = "lineno" > 534< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a857bef0db2dc0000f312cc8a95f857b2" > upper_beam< / a > = 1;< / div >
< div class = "line" > < a name = "l00535" > < / a > < span class = "lineno" > 535< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a0b456c521194903b29ce7c157539d771" > offsets< / a > .push_back(0);< / div >
< div class = "line" > < a name = "l00536" > < / a > < span class = "lineno" > 536< / span >   }< / div >
< div class = "line" > < a name = "l00537" > < / a > < span class = "lineno" > 537< / span >   < / div >
< div class = "line" > < a name = "l00538" > < / a > < span class = "lineno" > 538< / span >   < / div >
< div class = "line" > < a name = "l00539" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HNSW.html#aa6dfdaed7bc0ad895774315166fcb197" > 539< / a > < / span >   < span class = "keywordtype" > int< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#aa6dfdaed7bc0ad895774315166fcb197" > HNSW::random_level< / a > ()< / div >
< div class = "line" > < a name = "l00540" > < / a > < span class = "lineno" > 540< / span >   {< / div >
< div class = "line" > < a name = "l00541" > < / a > < span class = "lineno" > 541< / span >   < span class = "keywordtype" > double< / span > f = rng.< a class = "code" href = "structfaiss_1_1RandomGenerator.html#ac82a433d7bfa56d750907ba5cf74aed7" > rand_float< / a > ();< / div >
< div class = "line" > < a name = "l00542" > < / a > < span class = "lineno" > 542< / span >   < span class = "comment" > // could be a bit faster with bissection< / span > < / div >
< div class = "line" > < a name = "l00543" > < / a > < span class = "lineno" > 543< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > level = 0; level < < a class = "code" href = "structfaiss_1_1HNSW.html#a907c94e0eca5200af1dc8d0aea482665" > assign_probas< / a > .size(); level++) {< / div >
< div class = "line" > < a name = "l00544" > < / a > < span class = "lineno" > 544< / span >   < span class = "keywordflow" > if< / span > (f < < a class = "code" href = "structfaiss_1_1HNSW.html#a907c94e0eca5200af1dc8d0aea482665" > assign_probas< / a > [level]) {< / div >
< div class = "line" > < a name = "l00545" > < / a > < span class = "lineno" > 545< / span >   < span class = "keywordflow" > return< / span > level;< / div >
< div class = "line" > < a name = "l00546" > < / a > < span class = "lineno" > 546< / span >   }< / div >
< div class = "line" > < a name = "l00547" > < / a > < span class = "lineno" > 547< / span >   f -= < a class = "code" href = "structfaiss_1_1HNSW.html#a907c94e0eca5200af1dc8d0aea482665" > assign_probas< / a > [level];< / div >
< div class = "line" > < a name = "l00548" > < / a > < span class = "lineno" > 548< / span >   }< / div >
< div class = "line" > < a name = "l00549" > < / a > < span class = "lineno" > 549< / span >   < span class = "comment" > // happens with exponentially low probability< / span > < / div >
< div class = "line" > < a name = "l00550" > < / a > < span class = "lineno" > 550< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#a907c94e0eca5200af1dc8d0aea482665" > assign_probas< / a > .size() - 1;< / div >
< div class = "line" > < a name = "l00551" > < / a > < span class = "lineno" > 551< / span >   }< / div >
< div class = "line" > < a name = "l00552" > < / a > < span class = "lineno" > 552< / span >   < / div >
< div class = "line" > < a name = "l00553" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HNSW.html#ae7d955690da5d6376c203e81e124ba94" > 553< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#ae7d955690da5d6376c203e81e124ba94" > HNSW::set_default_probas< / a > (< span class = "keywordtype" > int< / span > M, < span class = "keywordtype" > float< / span > levelMult)< / div >
< div class = "line" > < a name = "l00554" > < / a > < span class = "lineno" > 554< / span >   {< / div >
< div class = "line" > < a name = "l00555" > < / a > < span class = "lineno" > 555< / span >   < span class = "keywordtype" > int< / span > nn = 0;< / div >
< div class = "line" > < a name = "l00556" > < / a > < span class = "lineno" > 556< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a1c258bb88aae9b1a754ab4690d85ed41" > cum_nneighbor_per_level< / a > .push_back (0);< / div >
< div class = "line" > < a name = "l00557" > < / a > < span class = "lineno" > 557< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > level = 0; ;level++) {< / div >
< div class = "line" > < a name = "l00558" > < / a > < span class = "lineno" > 558< / span >   < span class = "keywordtype" > float< / span > proba = exp(-level / levelMult) * (1 - exp(-1 / levelMult));< / div >
< div class = "line" > < a name = "l00559" > < / a > < span class = "lineno" > 559< / span >   < span class = "keywordflow" > if< / span > (proba < 1e-9) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00560" > < / a > < span class = "lineno" > 560< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a907c94e0eca5200af1dc8d0aea482665" > assign_probas< / a > .push_back(proba);< / div >
< div class = "line" > < a name = "l00561" > < / a > < span class = "lineno" > 561< / span >   nn += level == 0 ? M * 2 : M;< / div >
< div class = "line" > < a name = "l00562" > < / a > < span class = "lineno" > 562< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a1c258bb88aae9b1a754ab4690d85ed41" > cum_nneighbor_per_level< / a > .push_back (nn);< / div >
< div class = "line" > < a name = "l00563" > < / a > < span class = "lineno" > 563< / span >   }< / div >
< div class = "line" > < a name = "l00564" > < / a > < span class = "lineno" > 564< / span >   }< / div >
< div class = "line" > < a name = "l00565" > < / a > < span class = "lineno" > 565< / span >   < / div >
< div class = "line" > < a name = "l00566" > < / a > < span class = "lineno" > 566< / span >   < span class = "keywordtype" > void< / span > HNSW::clear_neighbor_tables(< span class = "keywordtype" > int< / span > level)< / div >
< div class = "line" > < a name = "l00567" > < / a > < span class = "lineno" > 567< / span >   {< / div >
< div class = "line" > < a name = "l00568" > < / a > < span class = "lineno" > 568< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1HNSW.html#a44847954c98957404829182c7db1b8af" > levels< / a > .size(); i++) {< / div >
< div class = "line" > < a name = "l00569" > < / a > < span class = "lineno" > 569< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l00570" > < / a > < span class = "lineno" > 570< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#aa3ae6a80d358e59e3af23f918253f61d" > neighbor_range< / a > (i, level, & begin, & end);< / div >
< div class = "line" > < a name = "l00571" > < / a > < span class = "lineno" > 571< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++)< / div >
< div class = "line" > < a name = "l00572" > < / a > < span class = "lineno" > 572< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > [j] = -1;< / div >
< div class = "line" > < a name = "l00573" > < / a > < span class = "lineno" > 573< / span >   }< / div >
< div class = "line" > < a name = "l00574" > < / a > < span class = "lineno" > 574< / span >   }< / div >
< div class = "line" > < a name = "l00575" > < / a > < span class = "lineno" > 575< / span >   < / div >
< div class = "line" > < a name = "l00576" > < / a > < span class = "lineno" > 576< / span >   < / div >
< div class = "line" > < a name = "l00577" > < / a > < span class = "lineno" > 577< / span >   < span class = "keywordtype" > void< / span > HNSW::reset() {< / div >
< div class = "line" > < a name = "l00578" > < / a > < span class = "lineno" > 578< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#afba18a290f5f759a8a7a64ed35b950eb" > max_level< / a > = -1;< / div >
< div class = "line" > < a name = "l00579" > < / a > < span class = "lineno" > 579< / span >   entry_point = -1;< / div >
< div class = "line" > < a name = "l00580" > < / a > < span class = "lineno" > 580< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a0b456c521194903b29ce7c157539d771" > offsets< / a > .clear();< / div >
< div class = "line" > < a name = "l00581" > < / a > < span class = "lineno" > 581< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a0b456c521194903b29ce7c157539d771" > offsets< / a > .push_back(0);< / div >
< div class = "line" > < a name = "l00582" > < / a > < span class = "lineno" > 582< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a44847954c98957404829182c7db1b8af" > levels< / a > .clear();< / div >
< div class = "line" > < a name = "l00583" > < / a > < span class = "lineno" > 583< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > .clear();< / div >
< div class = "line" > < a name = "l00584" > < / a > < span class = "lineno" > 584< / span >   }< / div >
< div class = "line" > < a name = "l00585" > < / a > < span class = "lineno" > 585< / span >   < / div >
< div class = "line" > < a name = "l00586" > < / a > < span class = "lineno" > 586< / span >   < / div >
< div class = "line" > < a name = "l00587" > < / a > < span class = "lineno" > 587< / span >   < / div >
< div class = "line" > < a name = "l00588" > < / a > < span class = "lineno" > 588< / span >   < span class = "keywordtype" > void< / span > HNSW::print_neighbor_stats(< span class = "keywordtype" > int< / span > level)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00589" > < / a > < span class = "lineno" > 589< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00590" > < / a > < span class = "lineno" > 590< / span >   FAISS_THROW_IF_NOT (level < < a class = "code" href = "structfaiss_1_1HNSW.html#a1c258bb88aae9b1a754ab4690d85ed41" > cum_nneighbor_per_level< / a > .size());< / div >
< div class = "line" > < a name = "l00591" > < / a > < span class = "lineno" > 591< / span >   printf(< span class = "stringliteral" > " stats on level %d, max %d neighbors per vertex:\n" < / span > ,< / div >
< div class = "line" > < a name = "l00592" > < / a > < span class = "lineno" > 592< / span >   level, < a class = "code" href = "structfaiss_1_1HNSW.html#ad497ea80f352c33242ba7835370c2dba" > nb_neighbors< / a > (level));< / div >
< div class = "line" > < a name = "l00593" > < / a > < span class = "lineno" > 593< / span >   < span class = "keywordtype" > size_t< / span > tot_neigh = 0, tot_common = 0, tot_reciprocal = 0, n_node = 0;< / div >
< div class = "line" > < a name = "l00594" > < / a > < span class = "lineno" > 594< / span >   < span class = "preprocessor" > #pragma omp parallel for reduction(+: tot_neigh) reduction(+: tot_common) \< / span > < / div >
< div class = "line" > < a name = "l00595" > < / a > < span class = "lineno" > 595< / span >   < span class = "preprocessor" > reduction(+: tot_reciprocal) reduction(+: n_node)< / span > < / div >
< div class = "line" > < a name = "l00596" > < / a > < span class = "lineno" > 596< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1HNSW.html#a44847954c98957404829182c7db1b8af" > levels< / a > .size(); i++) {< / div >
< div class = "line" > < a name = "l00597" > < / a > < span class = "lineno" > 597< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1HNSW.html#a44847954c98957404829182c7db1b8af" > levels< / a > [i] > level) {< / div >
< div class = "line" > < a name = "l00598" > < / a > < span class = "lineno" > 598< / span >   n_node++;< / div >
< div class = "line" > < a name = "l00599" > < / a > < span class = "lineno" > 599< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l00600" > < / a > < span class = "lineno" > 600< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#aa3ae6a80d358e59e3af23f918253f61d" > neighbor_range< / a > (i, level, & begin, & end);< / div >
< div class = "line" > < a name = "l00601" > < / a > < span class = "lineno" > 601< / span >   std::unordered_set< int> neighset;< / div >
< div class = "line" > < a name = "l00602" > < / a > < span class = "lineno" > 602< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l00603" > < / a > < span class = "lineno" > 603< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > [j] < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00604" > < / a > < span class = "lineno" > 604< / span >   neighset.insert(< a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > [j]);< / div >
< div class = "line" > < a name = "l00605" > < / a > < span class = "lineno" > 605< / span >   }< / div >
< div class = "line" > < a name = "l00606" > < / a > < span class = "lineno" > 606< / span >   < span class = "keywordtype" > int< / span > n_neigh = neighset.size();< / div >
< div class = "line" > < a name = "l00607" > < / a > < span class = "lineno" > 607< / span >   < span class = "keywordtype" > int< / span > n_common = 0;< / div >
< div class = "line" > < a name = "l00608" > < / a > < span class = "lineno" > 608< / span >   < span class = "keywordtype" > int< / span > n_reciprocal = 0;< / div >
< div class = "line" > < a name = "l00609" > < / a > < span class = "lineno" > 609< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l00610" > < / a > < span class = "lineno" > 610< / span >   storage_idx_t i2 = < a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > [j];< / div >
< div class = "line" > < a name = "l00611" > < / a > < span class = "lineno" > 611< / span >   < span class = "keywordflow" > if< / span > (i2 < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00612" > < / a > < span class = "lineno" > 612< / span >   FAISS_ASSERT(i2 != i);< / div >
< div class = "line" > < a name = "l00613" > < / a > < span class = "lineno" > 613< / span >   < span class = "keywordtype" > size_t< / span > begin2, end2;< / div >
< div class = "line" > < a name = "l00614" > < / a > < span class = "lineno" > 614< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#aa3ae6a80d358e59e3af23f918253f61d" > neighbor_range< / a > (i2, level, & begin2, & end2);< / div >
< div class = "line" > < a name = "l00615" > < / a > < span class = "lineno" > 615< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j2 = begin2; j2 < end2; j2++) {< / div >
< div class = "line" > < a name = "l00616" > < / a > < span class = "lineno" > 616< / span >   storage_idx_t i3 = < a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > [j2];< / div >
< div class = "line" > < a name = "l00617" > < / a > < span class = "lineno" > 617< / span >   < span class = "keywordflow" > if< / span > (i3 < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00618" > < / a > < span class = "lineno" > 618< / span >   < span class = "keywordflow" > if< / span > (i3 == i) {< / div >
< div class = "line" > < a name = "l00619" > < / a > < span class = "lineno" > 619< / span >   n_reciprocal++;< / div >
< div class = "line" > < a name = "l00620" > < / a > < span class = "lineno" > 620< / span >   < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00621" > < / a > < span class = "lineno" > 621< / span >   }< / div >
< div class = "line" > < a name = "l00622" > < / a > < span class = "lineno" > 622< / span >   < span class = "keywordflow" > if< / span > (neighset.count(i3)) {< / div >
< div class = "line" > < a name = "l00623" > < / a > < span class = "lineno" > 623< / span >   neighset.erase(i3);< / div >
< div class = "line" > < a name = "l00624" > < / a > < span class = "lineno" > 624< / span >   n_common++;< / div >
< div class = "line" > < a name = "l00625" > < / a > < span class = "lineno" > 625< / span >   }< / div >
< div class = "line" > < a name = "l00626" > < / a > < span class = "lineno" > 626< / span >   }< / div >
< div class = "line" > < a name = "l00627" > < / a > < span class = "lineno" > 627< / span >   }< / div >
< div class = "line" > < a name = "l00628" > < / a > < span class = "lineno" > 628< / span >   tot_neigh += n_neigh;< / div >
< div class = "line" > < a name = "l00629" > < / a > < span class = "lineno" > 629< / span >   tot_common += n_common;< / div >
< div class = "line" > < a name = "l00630" > < / a > < span class = "lineno" > 630< / span >   tot_reciprocal += n_reciprocal;< / div >
< div class = "line" > < a name = "l00631" > < / a > < span class = "lineno" > 631< / span >   }< / div >
< div class = "line" > < a name = "l00632" > < / a > < span class = "lineno" > 632< / span >   }< / div >
< div class = "line" > < a name = "l00633" > < / a > < span class = "lineno" > 633< / span >   < span class = "keywordtype" > float< / span > normalizer = n_node;< / div >
< div class = "line" > < a name = "l00634" > < / a > < span class = "lineno" > 634< / span >   printf(< span class = "stringliteral" > " nb of nodes at that level %ld\n" < / span > , n_node);< / div >
< div class = "line" > < a name = "l00635" > < / a > < span class = "lineno" > 635< / span >   printf(< span class = "stringliteral" > " neighbors per node: %.2f (%ld)\n" < / span > , tot_neigh / normalizer, tot_neigh);< / div >
< div class = "line" > < a name = "l00636" > < / a > < span class = "lineno" > 636< / span >   printf(< span class = "stringliteral" > " nb of reciprocal neighbors: %.2f\n" < / span > , tot_reciprocal / normalizer);< / div >
< div class = "line" > < a name = "l00637" > < / a > < span class = "lineno" > 637< / span >   printf(< span class = "stringliteral" > " nb of neighbors that are also neighbor-of-neighbors: %.2f (%ld)\n" < / span > ,< / div >
< div class = "line" > < a name = "l00638" > < / a > < span class = "lineno" > 638< / span >   tot_common / normalizer, tot_common);< / div >
< div class = "line" > < a name = "l00639" > < / a > < span class = "lineno" > 639< / span >   < / div >
< div class = "line" > < a name = "l00640" > < / a > < span class = "lineno" > 640< / span >   < / div >
< div class = "line" > < a name = "l00641" > < / a > < span class = "lineno" > 641< / span >   < / div >
< div class = "line" > < a name = "l00642" > < / a > < span class = "lineno" > 642< / span >   }< / div >
< div class = "line" > < a name = "l00643" > < / a > < span class = "lineno" > 643< / span >   < / div >
< div class = "line" > < a name = "l00644" > < / a > < span class = "lineno" > 644< / span >   HNSWStats hnsw_stats;< / div >
< div class = "line" > < a name = "l00645" > < / a > < span class = "lineno" > 645< / span >   < / div >
< div class = "line" > < a name = "l00646" > < / a > < span class = "lineno" > 646< / span >   < span class = "keywordtype" > void< / span > HNSWStats::reset ()< / div >
< div class = "line" > < a name = "l00647" > < / a > < span class = "lineno" > 647< / span >   {< / div >
< div class = "line" > < a name = "l00648" > < / a > < span class = "lineno" > 648< / span >   memset(< span class = "keyword" > this< / span > , 0, < span class = "keyword" > sizeof< / span > (*< span class = "keyword" > this< / span > ));< / div >
< div class = "line" > < a name = "l00649" > < / a > < span class = "lineno" > 649< / span >   }< / div >
< div class = "line" > < a name = "l00650" > < / a > < span class = "lineno" > 650< / span >   < / div >
< div class = "line" > < a name = "l00651" > < / a > < span class = "lineno" > 651< / span >   < / div >
< div class = "line" > < a name = "l00652" > < / a > < span class = "lineno" > 652< / span >   < / div >
< div class = "line" > < a name = "l00653" > < / a > < span class = "lineno" > 653< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l00654" > < / a > < span class = "lineno" > 654< / span >   < span class = "comment" > * Building, parallel< / span > < / div >
< div class = "line" > < a name = "l00655" > < / a > < span class = "lineno" > 655< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l00656" > < / a > < span class = "lineno" > 656< / span >   < / div >
< div class = "line" > < a name = "l00657" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HNSW.html#a314b809de6f329662ab09f258b49afb3" > 657< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#a314b809de6f329662ab09f258b49afb3" > HNSW::add_with_locks< / a > (< / div >
< div class = "line" > < a name = "l00658" > < / a > < span class = "lineno" > 658< / span >   DistanceComputer & ptdis, < span class = "keywordtype" > int< / span > pt_level, < span class = "keywordtype" > int< / span > pt_id,< / div >
< div class = "line" > < a name = "l00659" > < / a > < span class = "lineno" > 659< / span >   std::vector< omp_lock_t> & locks,< / div >
< div class = "line" > < a name = "l00660" > < / a > < span class = "lineno" > 660< / span >   < a class = "code" href = "structfaiss_1_1VisitedTable.html" > VisitedTable< / a > & vt)< / div >
< div class = "line" > < a name = "l00661" > < / a > < span class = "lineno" > 661< / span >   {< / div >
< div class = "line" > < a name = "l00662" > < / a > < span class = "lineno" > 662< / span >   < span class = "comment" > // greedy search on upper levels< / span > < / div >
< div class = "line" > < a name = "l00663" > < / a > < span class = "lineno" > 663< / span >   < / div >
< div class = "line" > < a name = "l00664" > < / a > < span class = "lineno" > 664< / span >   storage_idx_t nearest;< / div >
< div class = "line" > < a name = "l00665" > < / a > < span class = "lineno" > 665< / span >   < span class = "preprocessor" > #pragma omp critical< / span > < / div >
< div class = "line" > < a name = "l00666" > < / a > < span class = "lineno" > 666< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l00667" > < / a > < span class = "lineno" > 667< / span >   nearest = < a class = "code" href = "structfaiss_1_1HNSW.html#a95547d97c90b361a040bae0fb0d892b4" > entry_point< / a > ;< / div >
< div class = "line" > < a name = "l00668" > < / a > < span class = "lineno" > 668< / span >   < / div >
< div class = "line" > < a name = "l00669" > < / a > < span class = "lineno" > 669< / span >   < span class = "keywordflow" > if< / span > (nearest == -1) {< / div >
< div class = "line" > < a name = "l00670" > < / a > < span class = "lineno" > 670< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#afba18a290f5f759a8a7a64ed35b950eb" > max_level< / a > = pt_level;< / div >
< div class = "line" > < a name = "l00671" > < / a > < span class = "lineno" > 671< / span >   entry_point = pt_id;< / div >
< div class = "line" > < a name = "l00672" > < / a > < span class = "lineno" > 672< / span >   }< / div >
< div class = "line" > < a name = "l00673" > < / a > < span class = "lineno" > 673< / span >   }< / div >
< div class = "line" > < a name = "l00674" > < / a > < span class = "lineno" > 674< / span >   < / div >
< div class = "line" > < a name = "l00675" > < / a > < span class = "lineno" > 675< / span >   < span class = "keywordflow" > if< / span > (nearest < 0) {< / div >
< div class = "line" > < a name = "l00676" > < / a > < span class = "lineno" > 676< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00677" > < / a > < span class = "lineno" > 677< / span >   }< / div >
< div class = "line" > < a name = "l00678" > < / a > < span class = "lineno" > 678< / span >   < / div >
< div class = "line" > < a name = "l00679" > < / a > < span class = "lineno" > 679< / span >   omp_set_lock(& locks[pt_id]);< / div >
< div class = "line" > < a name = "l00680" > < / a > < span class = "lineno" > 680< / span >   < / div >
< div class = "line" > < a name = "l00681" > < / a > < span class = "lineno" > 681< / span >   < span class = "keywordtype" > int< / span > level = < a class = "code" href = "structfaiss_1_1HNSW.html#afba18a290f5f759a8a7a64ed35b950eb" > max_level< / a > ; < span class = "comment" > // level at which we start adding neighbors< / span > < / div >
< div class = "line" > < a name = "l00682" > < / a > < span class = "lineno" > 682< / span >   < span class = "keywordtype" > float< / span > d_nearest = ptdis(nearest);< / div >
< div class = "line" > < a name = "l00683" > < / a > < span class = "lineno" > 683< / span >   < / div >
< div class = "line" > < a name = "l00684" > < / a > < span class = "lineno" > 684< / span >   < span class = "keywordflow" > for< / span > (; level > pt_level; level--) {< / div >
< div class = "line" > < a name = "l00685" > < / a > < span class = "lineno" > 685< / span >   greedy_update_nearest(*< span class = "keyword" > this< / span > , ptdis, level, nearest, d_nearest);< / div >
< div class = "line" > < a name = "l00686" > < / a > < span class = "lineno" > 686< / span >   }< / div >
< div class = "line" > < a name = "l00687" > < / a > < span class = "lineno" > 687< / span >   < / div >
< div class = "line" > < a name = "l00688" > < / a > < span class = "lineno" > 688< / span >   < span class = "keywordflow" > for< / span > (; level > = 0; level--) {< / div >
< div class = "line" > < a name = "l00689" > < / a > < span class = "lineno" > 689< / span >   add_links_starting_from(*< span class = "keyword" > this< / span > , ptdis, pt_id, nearest, d_nearest,< / div >
< div class = "line" > < a name = "l00690" > < / a > < span class = "lineno" > 690< / span >   level, locks.data(), vt);< / div >
< div class = "line" > < a name = "l00691" > < / a > < span class = "lineno" > 691< / span >   }< / div >
< div class = "line" > < a name = "l00692" > < / a > < span class = "lineno" > 692< / span >   < / div >
< div class = "line" > < a name = "l00693" > < / a > < span class = "lineno" > 693< / span >   omp_unset_lock(& locks[pt_id]);< / div >
< div class = "line" > < a name = "l00694" > < / a > < span class = "lineno" > 694< / span >   < / div >
< div class = "line" > < a name = "l00695" > < / a > < span class = "lineno" > 695< / span >   < span class = "keywordflow" > if< / span > (pt_level > < a class = "code" href = "structfaiss_1_1HNSW.html#afba18a290f5f759a8a7a64ed35b950eb" > max_level< / a > ) {< / div >
< div class = "line" > < a name = "l00696" > < / a > < span class = "lineno" > 696< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#afba18a290f5f759a8a7a64ed35b950eb" > max_level< / a > = pt_level;< / div >
< div class = "line" > < a name = "l00697" > < / a > < span class = "lineno" > 697< / span >   entry_point = pt_id;< / div >
< div class = "line" > < a name = "l00698" > < / a > < span class = "lineno" > 698< / span >   }< / div >
< div class = "line" > < a name = "l00699" > < / a > < span class = "lineno" > 699< / span >   < / div >
< div class = "line" > < a name = "l00700" > < / a > < span class = "lineno" > 700< / span >   }< / div >
< div class = "line" > < a name = "l00701" > < / a > < span class = "lineno" > 701< / span >   < / div >
< div class = "line" > < a name = "l00702" > < / a > < span class = "lineno" > 702< / span >   < / div >
< div class = "line" > < a name = "l00703" > < / a > < span class = "lineno" > 703< / span >   < / div >
< div class = "line" > < a name = "l00704" > < / a > < span class = "lineno" > 704< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l00705" > < / a > < span class = "lineno" > 705< / span >   < span class = "comment" > * Searching< / span > < / div >
< div class = "line" > < a name = "l00706" > < / a > < span class = "lineno" > 706< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l00707" > < / a > < span class = "lineno" > 707< / span >   < / div >
< div class = "line" > < a name = "l00708" > < / a > < span class = "lineno" > 708< / span >   < / div >
< div class = "line" > < a name = "l00709" > < / a > < span class = "lineno" > 709< / span >   < / div >
< div class = "line" > < a name = "l00710" > < / a > < span class = "lineno" > 710< / span >   < / div >
< div class = "line" > < a name = "l00711" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HNSW.html#a330107a5801680609932849fc9404594" > 711< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#a330107a5801680609932849fc9404594" > HNSW::search< / a > (DistanceComputer & qdis,< / div >
< div class = "line" > < a name = "l00712" > < / a > < span class = "lineno" > 712< / span >   < span class = "keywordtype" > int< / span > k, idx_t *I, < span class = "keywordtype" > float< / span > * D,< / div >
< div class = "line" > < a name = "l00713" > < / a > < span class = "lineno" > 713< / span >   < a class = "code" href = "structfaiss_1_1VisitedTable.html" > VisitedTable< / a > & vt)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00714" > < / a > < span class = "lineno" > 714< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00715" > < / a > < span class = "lineno" > 715< / span >   < / div >
< div class = "line" > < a name = "l00716" > < / a > < span class = "lineno" > 716< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1HNSW.html#a857bef0db2dc0000f312cc8a95f857b2" > upper_beam< / a > == 1) {< / div >
< div class = "line" > < a name = "l00717" > < / a > < span class = "lineno" > 717< / span >   < / div >
< div class = "line" > < a name = "l00718" > < / a > < span class = "lineno" > 718< / span >   < span class = "comment" > // greedy search on upper levels< / span > < / div >
< div class = "line" > < a name = "l00719" > < / a > < span class = "lineno" > 719< / span >   storage_idx_t nearest = < a class = "code" href = "structfaiss_1_1HNSW.html#a95547d97c90b361a040bae0fb0d892b4" > entry_point< / a > ;< / div >
< div class = "line" > < a name = "l00720" > < / a > < span class = "lineno" > 720< / span >   < span class = "keywordtype" > float< / span > d_nearest = qdis(nearest);< / div >
< div class = "line" > < a name = "l00721" > < / a > < span class = "lineno" > 721< / span >   < / div >
< div class = "line" > < a name = "l00722" > < / a > < span class = "lineno" > 722< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > level = < a class = "code" href = "structfaiss_1_1HNSW.html#afba18a290f5f759a8a7a64ed35b950eb" > max_level< / a > ; level > = 1; level--) {< / div >
< div class = "line" > < a name = "l00723" > < / a > < span class = "lineno" > 723< / span >   greedy_update_nearest(*< span class = "keyword" > this< / span > , qdis, level, nearest, d_nearest);< / div >
< div class = "line" > < a name = "l00724" > < / a > < span class = "lineno" > 724< / span >   }< / div >
< div class = "line" > < a name = "l00725" > < / a > < span class = "lineno" > 725< / span >   < / div >
< div class = "line" > < a name = "l00726" > < / a > < span class = "lineno" > 726< / span >   < span class = "keywordtype" > int< / span > candidates_size = std::max(< a class = "code" href = "structfaiss_1_1HNSW.html#a6d1cb35c4220bf554af90133c71ae04f" > efSearch< / a > , k);< / div >
< div class = "line" > < a name = "l00727" > < / a > < span class = "lineno" > 727< / span >   MinimaxHeap candidates(candidates_size);< / div >
< div class = "line" > < a name = "l00728" > < / a > < span class = "lineno" > 728< / span >   < / div >
< div class = "line" > < a name = "l00729" > < / a > < span class = "lineno" > 729< / span >   candidates.push(nearest, d_nearest);< / div >
< div class = "line" > < a name = "l00730" > < / a > < span class = "lineno" > 730< / span >   < / div >
< div class = "line" > < a name = "l00731" > < / a > < span class = "lineno" > 731< / span >   search_from_candidates (< / div >
< div class = "line" > < a name = "l00732" > < / a > < span class = "lineno" > 732< / span >   *< span class = "keyword" > this< / span > , qdis, k, I, D, candidates, vt, 0);< / div >
< div class = "line" > < a name = "l00733" > < / a > < span class = "lineno" > 733< / span >   vt.< a class = "code" href = "structfaiss_1_1VisitedTable.html#a76223893c8c3a577473092b3bb8a2446" > advance< / a > ();< / div >
< div class = "line" > < a name = "l00734" > < / a > < span class = "lineno" > 734< / span >   < / div >
< div class = "line" > < a name = "l00735" > < / a > < span class = "lineno" > 735< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00736" > < / a > < span class = "lineno" > 736< / span >   < / div >
< div class = "line" > < a name = "l00737" > < / a > < span class = "lineno" > 737< / span >   < span class = "keywordtype" > int< / span > candidates_size = < a class = "code" href = "structfaiss_1_1HNSW.html#a857bef0db2dc0000f312cc8a95f857b2" > upper_beam< / a > ;< / div >
< div class = "line" > < a name = "l00738" > < / a > < span class = "lineno" > 738< / span >   MinimaxHeap candidates(candidates_size);< / div >
< div class = "line" > < a name = "l00739" > < / a > < span class = "lineno" > 739< / span >   < / div >
< div class = "line" > < a name = "l00740" > < / a > < span class = "lineno" > 740< / span >   std::vector< idx_t> I_to_next(candidates_size);< / div >
< div class = "line" > < a name = "l00741" > < / a > < span class = "lineno" > 741< / span >   std::vector< float> D_to_next(candidates_size);< / div >
< div class = "line" > < a name = "l00742" > < / a > < span class = "lineno" > 742< / span >   < / div >
< div class = "line" > < a name = "l00743" > < / a > < span class = "lineno" > 743< / span >   < span class = "keywordtype" > int< / span > nres = 1;< / div >
< div class = "line" > < a name = "l00744" > < / a > < span class = "lineno" > 744< / span >   I_to_next[0] = < a class = "code" href = "structfaiss_1_1HNSW.html#a95547d97c90b361a040bae0fb0d892b4" > entry_point< / a > ;< / div >
< div class = "line" > < a name = "l00745" > < / a > < span class = "lineno" > 745< / span >   D_to_next[0] = qdis(entry_point);< / div >
< div class = "line" > < a name = "l00746" > < / a > < span class = "lineno" > 746< / span >   < / div >
< div class = "line" > < a name = "l00747" > < / a > < span class = "lineno" > 747< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > level = < a class = "code" href = "structfaiss_1_1HNSW.html#afba18a290f5f759a8a7a64ed35b950eb" > max_level< / a > ; level > = 0; level--) {< / div >
< div class = "line" > < a name = "l00748" > < / a > < span class = "lineno" > 748< / span >   < / div >
< div class = "line" > < a name = "l00749" > < / a > < span class = "lineno" > 749< / span >   < span class = "comment" > // copy I, D -> candidates< / span > < / div >
< div class = "line" > < a name = "l00750" > < / a > < span class = "lineno" > 750< / span >   < / div >
< div class = "line" > < a name = "l00751" > < / a > < span class = "lineno" > 751< / span >   candidates.clear();< / div >
< div class = "line" > < a name = "l00752" > < / a > < span class = "lineno" > 752< / span >   < / div >
< div class = "line" > < a name = "l00753" > < / a > < span class = "lineno" > 753< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < nres; i++) {< / div >
< div class = "line" > < a name = "l00754" > < / a > < span class = "lineno" > 754< / span >   candidates.push(I_to_next[i], D_to_next[i]);< / div >
< div class = "line" > < a name = "l00755" > < / a > < span class = "lineno" > 755< / span >   }< / div >
< div class = "line" > < a name = "l00756" > < / a > < span class = "lineno" > 756< / span >   < / div >
< div class = "line" > < a name = "l00757" > < / a > < span class = "lineno" > 757< / span >   < span class = "keywordflow" > if< / span > (level == 0) {< / div >
< div class = "line" > < a name = "l00758" > < / a > < span class = "lineno" > 758< / span >   nres = search_from_candidates (< / div >
< div class = "line" > < a name = "l00759" > < / a > < span class = "lineno" > 759< / span >   *< span class = "keyword" > this< / span > , qdis, k, I, D, candidates, vt, 0);< / div >
< div class = "line" > < a name = "l00760" > < / a > < span class = "lineno" > 760< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00761" > < / a > < span class = "lineno" > 761< / span >   nres = search_from_candidates (< / div >
< div class = "line" > < a name = "l00762" > < / a > < span class = "lineno" > 762< / span >   *< span class = "keyword" > this< / span > , qdis, candidates_size,< / div >
< div class = "line" > < a name = "l00763" > < / a > < span class = "lineno" > 763< / span >   I_to_next.data(), D_to_next.data(),< / div >
< div class = "line" > < a name = "l00764" > < / a > < span class = "lineno" > 764< / span >   candidates, vt, level);< / div >
< div class = "line" > < a name = "l00765" > < / a > < span class = "lineno" > 765< / span >   }< / div >
< div class = "line" > < a name = "l00766" > < / a > < span class = "lineno" > 766< / span >   vt.< a class = "code" href = "structfaiss_1_1VisitedTable.html#a76223893c8c3a577473092b3bb8a2446" > advance< / a > ();< / div >
< div class = "line" > < a name = "l00767" > < / a > < span class = "lineno" > 767< / span >   }< / div >
< div class = "line" > < a name = "l00768" > < / a > < span class = "lineno" > 768< / span >   < / div >
< div class = "line" > < a name = "l00769" > < / a > < span class = "lineno" > 769< / span >   }< / div >
< div class = "line" > < a name = "l00770" > < / a > < span class = "lineno" > 770< / span >   }< / div >
< div class = "line" > < a name = "l00771" > < / a > < span class = "lineno" > 771< / span >   < / div >
< div class = "line" > < a name = "l00772" > < / a > < span class = "lineno" > 772< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l00773" > < / a > < span class = "lineno" > 773< / span >   < span class = "comment" > * add / search blocks of descriptors< / span > < / div >
< div class = "line" > < a name = "l00774" > < / a > < span class = "lineno" > 774< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l00775" > < / a > < span class = "lineno" > 775< / span >   < / div >
< div class = "line" > < a name = "l00776" > < / a > < span class = "lineno" > 776< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00777" > < / a > < span class = "lineno" > 777< / span >   < / div >
< div class = "line" > < a name = "l00778" > < / a > < span class = "lineno" > 778< / span >   < span class = "keywordtype" > int< / span > prepare_level_tab (< a class = "code" href = "structfaiss_1_1HNSW.html" > HNSW< / a > & hnsw, < span class = "keywordtype" > size_t< / span > n, < span class = "keywordtype" > bool< / span > preset_levels = < span class = "keyword" > false< / span > )< / div >
< div class = "line" > < a name = "l00779" > < / a > < span class = "lineno" > 779< / span >   {< / div >
< div class = "line" > < a name = "l00780" > < / a > < span class = "lineno" > 780< / span >   < span class = "keywordtype" > size_t< / span > n0 = hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a0b456c521194903b29ce7c157539d771" > offsets< / a > .size() - 1;< / div >
< div class = "line" > < a name = "l00781" > < / a > < span class = "lineno" > 781< / span >   < / div >
< div class = "line" > < a name = "l00782" > < / a > < span class = "lineno" > 782< / span >   < span class = "keywordflow" > if< / span > (preset_levels) {< / div >
< div class = "line" > < a name = "l00783" > < / a > < span class = "lineno" > 783< / span >   FAISS_ASSERT (n0 + n == hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a44847954c98957404829182c7db1b8af" > levels< / a > .size());< / div >
< div class = "line" > < a name = "l00784" > < / a > < span class = "lineno" > 784< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00785" > < / a > < span class = "lineno" > 785< / span >   FAISS_ASSERT (n0 == hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a44847954c98957404829182c7db1b8af" > levels< / a > .size());< / div >
< div class = "line" > < a name = "l00786" > < / a > < span class = "lineno" > 786< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00787" > < / a > < span class = "lineno" > 787< / span >   < span class = "keywordtype" > int< / span > pt_level = hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#aa6dfdaed7bc0ad895774315166fcb197" > random_level< / a > ();< / div >
< div class = "line" > < a name = "l00788" > < / a > < span class = "lineno" > 788< / span >   hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a44847954c98957404829182c7db1b8af" > levels< / a > .push_back(pt_level + 1);< / div >
< div class = "line" > < a name = "l00789" > < / a > < span class = "lineno" > 789< / span >   }< / div >
< div class = "line" > < a name = "l00790" > < / a > < span class = "lineno" > 790< / span >   }< / div >
< div class = "line" > < a name = "l00791" > < / a > < span class = "lineno" > 791< / span >   < / div >
< div class = "line" > < a name = "l00792" > < / a > < span class = "lineno" > 792< / span >   < span class = "keywordtype" > int< / span > max_level = 0;< / div >
< div class = "line" > < a name = "l00793" > < / a > < span class = "lineno" > 793< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00794" > < / a > < span class = "lineno" > 794< / span >   < span class = "keywordtype" > int< / span > pt_level = hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a44847954c98957404829182c7db1b8af" > levels< / a > [i + n0] - 1;< / div >
< div class = "line" > < a name = "l00795" > < / a > < span class = "lineno" > 795< / span >   < span class = "keywordflow" > if< / span > (pt_level > max_level) max_level = pt_level;< / div >
< div class = "line" > < a name = "l00796" > < / a > < span class = "lineno" > 796< / span >   hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a0b456c521194903b29ce7c157539d771" > offsets< / a > .push_back(hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a0b456c521194903b29ce7c157539d771" > offsets< / a > .back() +< / div >
< div class = "line" > < a name = "l00797" > < / a > < span class = "lineno" > 797< / span >   hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a49b512eaaa54ead77b564cad8e3e6ebd" > cum_nb_neighbors< / a > (pt_level + 1));< / div >
< div class = "line" > < a name = "l00798" > < / a > < span class = "lineno" > 798< / span >   hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > .resize(hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a0b456c521194903b29ce7c157539d771" > offsets< / a > .back(), -1);< / div >
< div class = "line" > < a name = "l00799" > < / a > < span class = "lineno" > 799< / span >   }< / div >
< div class = "line" > < a name = "l00800" > < / a > < span class = "lineno" > 800< / span >   < span class = "keywordflow" > return< / span > max_level;< / div >
< div class = "line" > < a name = "l00801" > < / a > < span class = "lineno" > 801< / span >   }< / div >
< div class = "line" > < a name = "l00802" > < / a > < span class = "lineno" > 802< / span >   < / div >
< div class = "line" > < a name = "l00803" > < / a > < span class = "lineno" > 803< / span >   < span class = "keywordtype" > void< / span > hnsw_add_vertices(IndexHNSW & index_hnsw,< / div >
< div class = "line" > < a name = "l00804" > < / a > < span class = "lineno" > 804< / span >   < span class = "keywordtype" > size_t< / span > n0,< / div >
< div class = "line" > < a name = "l00805" > < / a > < span class = "lineno" > 805< / span >   < span class = "keywordtype" > size_t< / span > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x,< / div >
< div class = "line" > < a name = "l00806" > < / a > < span class = "lineno" > 806< / span >   < span class = "keywordtype" > bool< / span > verbose,< / div >
< div class = "line" > < a name = "l00807" > < / a > < span class = "lineno" > 807< / span >   < span class = "keywordtype" > bool< / span > preset_levels = < span class = "keyword" > false< / span > ) {< / div >
< div class = "line" > < a name = "l00808" > < / a > < span class = "lineno" > 808< / span >   HNSW & hnsw = index_hnsw.hnsw;< / div >
< div class = "line" > < a name = "l00809" > < / a > < span class = "lineno" > 809< / span >   < span class = "keywordtype" > size_t< / span > ntotal = n0 + n;< / div >
< div class = "line" > < a name = "l00810" > < / a > < span class = "lineno" > 810< / span >   < span class = "keywordtype" > double< / span > t0 = < a class = "code" href = "namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb" > getmillisecs< / a > ();< / div >
< div class = "line" > < a name = "l00811" > < / a > < span class = "lineno" > 811< / span >   < span class = "keywordflow" > if< / span > (verbose) {< / div >
< div class = "line" > < a name = "l00812" > < / a > < span class = "lineno" > 812< / span >   printf(< span class = "stringliteral" > " hnsw_add_vertices: adding %ld elements on top of %ld " < / span > < / div >
< div class = "line" > < a name = "l00813" > < / a > < span class = "lineno" > 813< / span >   < span class = "stringliteral" > " (preset_levels=%d)\n" < / span > ,< / div >
< div class = "line" > < a name = "l00814" > < / a > < span class = "lineno" > 814< / span >   n, n0, < span class = "keywordtype" > int< / span > (preset_levels));< / div >
< div class = "line" > < a name = "l00815" > < / a > < span class = "lineno" > 815< / span >   }< / div >
< div class = "line" > < a name = "l00816" > < / a > < span class = "lineno" > 816< / span >   < / div >
< div class = "line" > < a name = "l00817" > < / a > < span class = "lineno" > 817< / span >   < span class = "keywordtype" > int< / span > max_level = prepare_level_tab (index_hnsw.hnsw, n, preset_levels);< / div >
< div class = "line" > < a name = "l00818" > < / a > < span class = "lineno" > 818< / span >   < / div >
< div class = "line" > < a name = "l00819" > < / a > < span class = "lineno" > 819< / span >   < span class = "keywordflow" > if< / span > (verbose) {< / div >
< div class = "line" > < a name = "l00820" > < / a > < span class = "lineno" > 820< / span >   printf(< span class = "stringliteral" > " max_level = %d\n" < / span > , max_level);< / div >
< div class = "line" > < a name = "l00821" > < / a > < span class = "lineno" > 821< / span >   }< / div >
< div class = "line" > < a name = "l00822" > < / a > < span class = "lineno" > 822< / span >   < / div >
< div class = "line" > < a name = "l00823" > < / a > < span class = "lineno" > 823< / span >   std::vector< omp_lock_t> locks(ntotal);< / div >
< div class = "line" > < a name = "l00824" > < / a > < span class = "lineno" > 824< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < ntotal; i++)< / div >
< div class = "line" > < a name = "l00825" > < / a > < span class = "lineno" > 825< / span >   omp_init_lock(& locks[i]);< / div >
< div class = "line" > < a name = "l00826" > < / a > < span class = "lineno" > 826< / span >   < / div >
< div class = "line" > < a name = "l00827" > < / a > < span class = "lineno" > 827< / span >   < span class = "comment" > // add vectors from highest to lowest level< / span > < / div >
< div class = "line" > < a name = "l00828" > < / a > < span class = "lineno" > 828< / span >   std::vector< int> hist;< / div >
< div class = "line" > < a name = "l00829" > < / a > < span class = "lineno" > 829< / span >   std::vector< int> order(n);< / div >
< div class = "line" > < a name = "l00830" > < / a > < span class = "lineno" > 830< / span >   < / div >
< div class = "line" > < a name = "l00831" > < / a > < span class = "lineno" > 831< / span >   { < span class = "comment" > // make buckets with vectors of the same level< / span > < / div >
< div class = "line" > < a name = "l00832" > < / a > < span class = "lineno" > 832< / span >   < / div >
< div class = "line" > < a name = "l00833" > < / a > < span class = "lineno" > 833< / span >   < span class = "comment" > // build histogram< / span > < / div >
< div class = "line" > < a name = "l00834" > < / a > < span class = "lineno" > 834< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00835" > < / a > < span class = "lineno" > 835< / span >   storage_idx_t pt_id = i + n0;< / div >
< div class = "line" > < a name = "l00836" > < / a > < span class = "lineno" > 836< / span >   < span class = "keywordtype" > int< / span > pt_level = hnsw.levels[pt_id] - 1;< / div >
< div class = "line" > < a name = "l00837" > < / a > < span class = "lineno" > 837< / span >   < span class = "keywordflow" > while< / span > (pt_level > = hist.size())< / div >
< div class = "line" > < a name = "l00838" > < / a > < span class = "lineno" > 838< / span >   hist.push_back(0);< / div >
< div class = "line" > < a name = "l00839" > < / a > < span class = "lineno" > 839< / span >   hist[pt_level] ++;< / div >
< div class = "line" > < a name = "l00840" > < / a > < span class = "lineno" > 840< / span >   }< / div >
< div class = "line" > < a name = "l00841" > < / a > < span class = "lineno" > 841< / span >   < / div >
< div class = "line" > < a name = "l00842" > < / a > < span class = "lineno" > 842< / span >   < span class = "comment" > // accumulate< / span > < / div >
< div class = "line" > < a name = "l00843" > < / a > < span class = "lineno" > 843< / span >   std::vector< int> offsets(hist.size() + 1, 0);< / div >
< div class = "line" > < a name = "l00844" > < / a > < span class = "lineno" > 844< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < hist.size() - 1; i++) {< / div >
< div class = "line" > < a name = "l00845" > < / a > < span class = "lineno" > 845< / span >   offsets[i + 1] = offsets[i] + hist[i];< / div >
< div class = "line" > < a name = "l00846" > < / a > < span class = "lineno" > 846< / span >   }< / div >
< div class = "line" > < a name = "l00847" > < / a > < span class = "lineno" > 847< / span >   < / div >
< div class = "line" > < a name = "l00848" > < / a > < span class = "lineno" > 848< / span >   < span class = "comment" > // bucket sort< / span > < / div >
< div class = "line" > < a name = "l00849" > < / a > < span class = "lineno" > 849< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00850" > < / a > < span class = "lineno" > 850< / span >   storage_idx_t pt_id = i + n0;< / div >
< div class = "line" > < a name = "l00851" > < / a > < span class = "lineno" > 851< / span >   < span class = "keywordtype" > int< / span > pt_level = hnsw.levels[pt_id] - 1;< / div >
< div class = "line" > < a name = "l00852" > < / a > < span class = "lineno" > 852< / span >   order[offsets[pt_level]++] = pt_id;< / div >
< div class = "line" > < a name = "l00853" > < / a > < span class = "lineno" > 853< / span >   }< / div >
< div class = "line" > < a name = "l00854" > < / a > < span class = "lineno" > 854< / span >   }< / div >
< div class = "line" > < a name = "l00855" > < / a > < span class = "lineno" > 855< / span >   < / div >
< div class = "line" > < a name = "l00856" > < / a > < span class = "lineno" > 856< / span >   { < span class = "comment" > // perform add< / span > < / div >
< div class = "line" > < a name = "l00857" > < / a > < span class = "lineno" > 857< / span >   RandomGenerator rng2(789);< / div >
< div class = "line" > < a name = "l00858" > < / a > < span class = "lineno" > 858< / span >   < / div >
< div class = "line" > < a name = "l00859" > < / a > < span class = "lineno" > 859< / span >   < span class = "keywordtype" > int< / span > i1 = n;< / div >
< div class = "line" > < a name = "l00860" > < / a > < span class = "lineno" > 860< / span >   < / div >
< div class = "line" > < a name = "l00861" > < / a > < span class = "lineno" > 861< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > pt_level = hist.size() - 1; pt_level > = 0; pt_level--) {< / div >
< div class = "line" > < a name = "l00862" > < / a > < span class = "lineno" > 862< / span >   < span class = "keywordtype" > int< / span > i0 = i1 - hist[pt_level];< / div >
< div class = "line" > < a name = "l00863" > < / a > < span class = "lineno" > 863< / span >   < / div >
< div class = "line" > < a name = "l00864" > < / a > < span class = "lineno" > 864< / span >   < span class = "keywordflow" > if< / span > (verbose) {< / div >
< div class = "line" > < a name = "l00865" > < / a > < span class = "lineno" > 865< / span >   printf(< span class = "stringliteral" > " Adding %d elements at level %d\n" < / span > ,< / div >
< div class = "line" > < a name = "l00866" > < / a > < span class = "lineno" > 866< / span >   i1 - i0, pt_level);< / div >
< div class = "line" > < a name = "l00867" > < / a > < span class = "lineno" > 867< / span >   }< / div >
< div class = "line" > < a name = "l00868" > < / a > < span class = "lineno" > 868< / span >   < / div >
< div class = "line" > < a name = "l00869" > < / a > < span class = "lineno" > 869< / span >   < span class = "comment" > // random permutation to get rid of dataset order bias< / span > < / div >
< div class = "line" > < a name = "l00870" > < / a > < span class = "lineno" > 870< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = i0; j < i1; j++)< / div >
< div class = "line" > < a name = "l00871" > < / a > < span class = "lineno" > 871< / span >   std::swap(order[j], order[j + rng2.rand_int(i1 - j)]);< / div >
< div class = "line" > < a name = "l00872" > < / a > < span class = "lineno" > 872< / span >   < / div >
< div class = "line" > < a name = "l00873" > < / a > < span class = "lineno" > 873< / span >   < span class = "preprocessor" > #pragma omp parallel< / span > < / div >
< div class = "line" > < a name = "l00874" > < / a > < span class = "lineno" > 874< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l00875" > < / a > < span class = "lineno" > 875< / span >   VisitedTable vt (ntotal);< / div >
< div class = "line" > < a name = "l00876" > < / a > < span class = "lineno" > 876< / span >   < / div >
< div class = "line" > < a name = "l00877" > < / a > < span class = "lineno" > 877< / span >   DistanceComputer *dis = index_hnsw.get_distance_computer();< / div >
< div class = "line" > < a name = "l00878" > < / a > < span class = "lineno" > 878< / span >   ScopeDeleter1< DistanceComputer> del(dis);< / div >
< div class = "line" > < a name = "l00879" > < / a > < span class = "lineno" > 879< / span >   < span class = "keywordtype" > int< / span > prev_display = verbose & & omp_get_thread_num() == 0 ? 0 : -1;< / div >
< div class = "line" > < a name = "l00880" > < / a > < span class = "lineno" > 880< / span >   < / div >
< div class = "line" > < a name = "l00881" > < / a > < span class = "lineno" > 881< / span >   < span class = "preprocessor" > #pragma omp for schedule(dynamic)< / span > < / div >
< div class = "line" > < a name = "l00882" > < / a > < span class = "lineno" > 882< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = i0; i < i1; i++) {< / div >
< div class = "line" > < a name = "l00883" > < / a > < span class = "lineno" > 883< / span >   storage_idx_t pt_id = order[i];< / div >
< div class = "line" > < a name = "l00884" > < / a > < span class = "lineno" > 884< / span >   dis-> set_query (x + (pt_id - n0) * dis-> d);< / div >
< div class = "line" > < a name = "l00885" > < / a > < span class = "lineno" > 885< / span >   < / div >
< div class = "line" > < a name = "l00886" > < / a > < span class = "lineno" > 886< / span >   hnsw.add_with_locks (< / div >
< div class = "line" > < a name = "l00887" > < / a > < span class = "lineno" > 887< / span >   *dis, pt_level, pt_id, locks,< / div >
< div class = "line" > < a name = "l00888" > < / a > < span class = "lineno" > 888< / span >   vt);< / div >
< div class = "line" > < a name = "l00889" > < / a > < span class = "lineno" > 889< / span >   < / div >
< div class = "line" > < a name = "l00890" > < / a > < span class = "lineno" > 890< / span >   < span class = "keywordflow" > if< / span > (prev_display > = 0 & & i - i0 > prev_display + 10000) {< / div >
< div class = "line" > < a name = "l00891" > < / a > < span class = "lineno" > 891< / span >   prev_display = i - i0;< / div >
< div class = "line" > < a name = "l00892" > < / a > < span class = "lineno" > 892< / span >   printf(< span class = "stringliteral" > " %d / %d\r" < / span > , i - i0, i1 - i0);< / div >
< div class = "line" > < a name = "l00893" > < / a > < span class = "lineno" > 893< / span >   fflush(stdout);< / div >
< div class = "line" > < a name = "l00894" > < / a > < span class = "lineno" > 894< / span >   }< / div >
< div class = "line" > < a name = "l00895" > < / a > < span class = "lineno" > 895< / span >   }< / div >
< div class = "line" > < a name = "l00896" > < / a > < span class = "lineno" > 896< / span >   }< / div >
< div class = "line" > < a name = "l00897" > < / a > < span class = "lineno" > 897< / span >   i1 = i0;< / div >
< div class = "line" > < a name = "l00898" > < / a > < span class = "lineno" > 898< / span >   }< / div >
< div class = "line" > < a name = "l00899" > < / a > < span class = "lineno" > 899< / span >   FAISS_ASSERT(i1 == 0);< / div >
< div class = "line" > < a name = "l00900" > < / a > < span class = "lineno" > 900< / span >   }< / div >
< div class = "line" > < a name = "l00901" > < / a > < span class = "lineno" > 901< / span >   < span class = "keywordflow" > if< / span > (verbose)< / div >
< div class = "line" > < a name = "l00902" > < / a > < span class = "lineno" > 902< / span >   printf(< span class = "stringliteral" > " Done in %.3f ms\n" < / span > , < a class = "code" href = "namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb" > getmillisecs< / a > () - t0);< / div >
< div class = "line" > < a name = "l00903" > < / a > < span class = "lineno" > 903< / span >   < / div >
< div class = "line" > < a name = "l00904" > < / a > < span class = "lineno" > 904< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < ntotal; i++)< / div >
< div class = "line" > < a name = "l00905" > < / a > < span class = "lineno" > 905< / span >   omp_destroy_lock(& locks[i]);< / div >
< div class = "line" > < a name = "l00906" > < / a > < span class = "lineno" > 906< / span >   < / div >
< div class = "line" > < a name = "l00907" > < / a > < span class = "lineno" > 907< / span >   }< / div >
< div class = "line" > < a name = "l00908" > < / a > < span class = "lineno" > 908< / span >   < / div >
< div class = "line" > < a name = "l00909" > < / a > < span class = "lineno" > 909< / span >   < / div >
< div class = "line" > < a name = "l00910" > < / a > < span class = "lineno" > 910< / span >   } < span class = "comment" > // anonymous namespace< / span > < / div >
< div class = "line" > < a name = "l00911" > < / a > < span class = "lineno" > 911< / span >   < / div >
< div class = "line" > < a name = "l00912" > < / a > < span class = "lineno" > 912< / span >   < / div >
< div class = "line" > < a name = "l00913" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HNSW.html#a26710980aaca3c1c8729e5e055a42ebe" > 913< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1HNSW.html#a26710980aaca3c1c8729e5e055a42ebe" > HNSW::fill_with_random_links< / a > (< span class = "keywordtype" > size_t< / span > n)< / div >
< div class = "line" > < a name = "l00914" > < / a > < span class = "lineno" > 914< / span >   {< / div >
< div class = "line" > < a name = "l00915" > < / a > < span class = "lineno" > 915< / span >   < span class = "keywordtype" > int< / span > max_level = prepare_level_tab (*< span class = "keyword" > this< / span > , n);< / div >
< div class = "line" > < a name = "l00916" > < / a > < span class = "lineno" > 916< / span >   < a class = "code" href = "structfaiss_1_1RandomGenerator.html" > RandomGenerator< / a > rng2(456);< / div >
< div class = "line" > < a name = "l00917" > < / a > < span class = "lineno" > 917< / span >   < / div >
< div class = "line" > < a name = "l00918" > < / a > < span class = "lineno" > 918< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > level = max_level - 1; level > = 0; level++) {< / div >
< div class = "line" > < a name = "l00919" > < / a > < span class = "lineno" > 919< / span >   std::vector< int> elts;< / div >
< div class = "line" > < a name = "l00920" > < / a > < span class = "lineno" > 920< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00921" > < / a > < span class = "lineno" > 921< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1HNSW.html#a44847954c98957404829182c7db1b8af" > levels< / a > [i] > level) {< / div >
< div class = "line" > < a name = "l00922" > < / a > < span class = "lineno" > 922< / span >   elts.push_back(i);< / div >
< div class = "line" > < a name = "l00923" > < / a > < span class = "lineno" > 923< / span >   }< / div >
< div class = "line" > < a name = "l00924" > < / a > < span class = "lineno" > 924< / span >   }< / div >
< div class = "line" > < a name = "l00925" > < / a > < span class = "lineno" > 925< / span >   printf (< span class = "stringliteral" > " linking %ld elements in level %d\n" < / span > ,< / div >
< div class = "line" > < a name = "l00926" > < / a > < span class = "lineno" > 926< / span >   elts.size(), level);< / div >
< div class = "line" > < a name = "l00927" > < / a > < span class = "lineno" > 927< / span >   < / div >
< div class = "line" > < a name = "l00928" > < / a > < span class = "lineno" > 928< / span >   < span class = "keywordflow" > if< / span > (elts.size() == 1) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00929" > < / a > < span class = "lineno" > 929< / span >   < / div >
< div class = "line" > < a name = "l00930" > < / a > < span class = "lineno" > 930< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > ii = 0; ii < elts.size(); ii++) {< / div >
< div class = "line" > < a name = "l00931" > < / a > < span class = "lineno" > 931< / span >   < span class = "keywordtype" > int< / span > i = elts[ii];< / div >
< div class = "line" > < a name = "l00932" > < / a > < span class = "lineno" > 932< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l00933" > < / a > < span class = "lineno" > 933< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#aa3ae6a80d358e59e3af23f918253f61d" > neighbor_range< / a > (i, 0, & begin, & end);< / div >
< div class = "line" > < a name = "l00934" > < / a > < span class = "lineno" > 934< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l00935" > < / a > < span class = "lineno" > 935< / span >   < span class = "keywordtype" > int< / span > other = 0;< / div >
< div class = "line" > < a name = "l00936" > < / a > < span class = "lineno" > 936< / span >   < span class = "keywordflow" > do< / span > {< / div >
< div class = "line" > < a name = "l00937" > < / a > < span class = "lineno" > 937< / span >   other = elts[rng2.< a class = "code" href = "structfaiss_1_1RandomGenerator.html#a583f124ecacdbe037ac96e23a44dd420" > rand_int< / a > (elts.size())];< / div >
< div class = "line" > < a name = "l00938" > < / a > < span class = "lineno" > 938< / span >   } < span class = "keywordflow" > while< / span > (other == i);< / div >
< div class = "line" > < a name = "l00939" > < / a > < span class = "lineno" > 939< / span >   < / div >
< div class = "line" > < a name = "l00940" > < / a > < span class = "lineno" > 940< / span >   < a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > [j] = other;< / div >
< div class = "line" > < a name = "l00941" > < / a > < span class = "lineno" > 941< / span >   }< / div >
< div class = "line" > < a name = "l00942" > < / a > < span class = "lineno" > 942< / span >   < / div >
< div class = "line" > < a name = "l00943" > < / a > < span class = "lineno" > 943< / span >   }< / div >
< div class = "line" > < a name = "l00944" > < / a > < span class = "lineno" > 944< / span >   < / div >
< div class = "line" > < a name = "l00945" > < / a > < span class = "lineno" > 945< / span >   }< / div >
< div class = "line" > < a name = "l00946" > < / a > < span class = "lineno" > 946< / span >   < / div >
< div class = "line" > < a name = "l00947" > < / a > < span class = "lineno" > 947< / span >   }< / div >
< div class = "line" > < a name = "l00948" > < / a > < span class = "lineno" > 948< / span >   < / div >
< div class = "line" > < a name = "l00949" > < / a > < span class = "lineno" > 949< / span >   < / div >
< div class = "line" > < a name = "l00950" > < / a > < span class = "lineno" > 950< / span >   < / div >
< div class = "line" > < a name = "l00951" > < / a > < span class = "lineno" > 951< / span >   < / div >
< div class = "line" > < a name = "l00952" > < / a > < span class = "lineno" > 952< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l00953" > < / a > < span class = "lineno" > 953< / span >   < span class = "comment" > * IndexHNSW implementation< / span > < / div >
< div class = "line" > < a name = "l00954" > < / a > < span class = "lineno" > 954< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l00955" > < / a > < span class = "lineno" > 955< / span >   < / div >
< div class = "line" > < a name = "l00956" > < / a > < span class = "lineno" > 956< / span >   IndexHNSW::IndexHNSW(< span class = "keywordtype" > int< / span > d, < span class = "keywordtype" > int< / span > M):< / div >
< div class = "line" > < a name = "l00957" > < / a > < span class = "lineno" > 957< / span >   < a class = "code" href = "structfaiss_1_1Index.html" > Index< / a > (d, METRIC_L2),< / div >
< div class = "line" > < a name = "l00958" > < / a > < span class = "lineno" > 958< / span >   hnsw(M),< / div >
< div class = "line" > < a name = "l00959" > < / a > < span class = "lineno" > 959< / span >   own_fields(false),< / div >
< div class = "line" > < a name = "l00960" > < / a > < span class = "lineno" > 960< / span >   storage(nullptr),< / div >
< div class = "line" > < a name = "l00961" > < / a > < span class = "lineno" > 961< / span >   reconstruct_from_neighbors(nullptr)< / div >
< div class = "line" > < a name = "l00962" > < / a > < span class = "lineno" > 962< / span >   {}< / div >
< div class = "line" > < a name = "l00963" > < / a > < span class = "lineno" > 963< / span >   < / div >
< div class = "line" > < a name = "l00964" > < / a > < span class = "lineno" > 964< / span >   IndexHNSW::IndexHNSW(Index *storage, < span class = "keywordtype" > int< / span > M):< / div >
< div class = "line" > < a name = "l00965" > < / a > < span class = "lineno" > 965< / span >   Index(storage-> d, METRIC_L2),< / div >
< div class = "line" > < a name = "l00966" > < / a > < span class = "lineno" > 966< / span >   hnsw(M),< / div >
< div class = "line" > < a name = "l00967" > < / a > < span class = "lineno" > 967< / span >   own_fields(false),< / div >
< div class = "line" > < a name = "l00968" > < / a > < span class = "lineno" > 968< / span >   storage(storage),< / div >
< div class = "line" > < a name = "l00969" > < / a > < span class = "lineno" > 969< / span >   reconstruct_from_neighbors(nullptr)< / div >
< div class = "line" > < a name = "l00970" > < / a > < span class = "lineno" > 970< / span >   {}< / div >
< div class = "line" > < a name = "l00971" > < / a > < span class = "lineno" > 971< / span >   < / div >
< div class = "line" > < a name = "l00972" > < / a > < span class = "lineno" > 972< / span >   IndexHNSW::~IndexHNSW() {< / div >
< div class = "line" > < a name = "l00973" > < / a > < span class = "lineno" > 973< / span >   < span class = "keywordflow" > if< / span > (own_fields) {< / div >
< div class = "line" > < a name = "l00974" > < / a > < span class = "lineno" > 974< / span >   < span class = "keyword" > delete< / span > storage;< / div >
< div class = "line" > < a name = "l00975" > < / a > < span class = "lineno" > 975< / span >   }< / div >
< div class = "line" > < a name = "l00976" > < / a > < span class = "lineno" > 976< / span >   }< / div >
< div class = "line" > < a name = "l00977" > < / a > < span class = "lineno" > 977< / span >   < / div >
< div class = "line" > < a name = "l00978" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexHNSW.html#a40bc6d2c67545f95e322c63d68a47140" > 978< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexHNSW.html#a40bc6d2c67545f95e322c63d68a47140" > IndexHNSW::train< / a > (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * x)< / div >
< div class = "line" > < a name = "l00979" > < / a > < span class = "lineno" > 979< / span >   {< / div >
< div class = "line" > < a name = "l00980" > < / a > < span class = "lineno" > 980< / span >   < span class = "comment" > // hnsw structure does not require training< / span > < / div >
< div class = "line" > < a name = "l00981" > < / a > < span class = "lineno" > 981< / span >   storage-> < a class = "code" href = "structfaiss_1_1Index.html#abf601502bdbfa02b9d7bcd7b3671b71d" > train< / a > (n, x);< / div >
< div class = "line" > < a name = "l00982" > < / a > < span class = "lineno" > 982< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00983" > < / a > < span class = "lineno" > 983< / span >   }< / div >
< div class = "line" > < a name = "l00984" > < / a > < span class = "lineno" > 984< / span >   < / div >
< div class = "line" > < a name = "l00985" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexHNSW.html#ae0ddf6ab4a54239a25d6277e21e8548e" > 985< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexHNSW.html#ae0ddf6ab4a54239a25d6277e21e8548e" > IndexHNSW::search< / a > (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x, idx_t k,< / div >
< div class = "line" > < a name = "l00986" > < / a > < span class = "lineno" > 986< / span >   < span class = "keywordtype" > float< / span > *distances, idx_t *labels)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00987" > < / a > < span class = "lineno" > 987< / span >   < span class = "keyword" > < / span > < / div >
< div class = "line" > < a name = "l00988" > < / a > < span class = "lineno" > 988< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00989" > < / a > < span class = "lineno" > 989< / span >   < / div >
< div class = "line" > < a name = "l00990" > < / a > < span class = "lineno" > 990< / span >   < span class = "preprocessor" > #pragma omp parallel< / span > < / div >
< div class = "line" > < a name = "l00991" > < / a > < span class = "lineno" > 991< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l00992" > < / a > < span class = "lineno" > 992< / span >   < a class = "code" href = "structfaiss_1_1VisitedTable.html" > VisitedTable< / a > vt (ntotal);< / div >
< div class = "line" > < a name = "l00993" > < / a > < span class = "lineno" > 993< / span >   DistanceComputer *dis = get_distance_computer();< / div >
< div class = "line" > < a name = "l00994" > < / a > < span class = "lineno" > 994< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter1.html" > ScopeDeleter1< DistanceComputer> < / a > del(dis);< / div >
< div class = "line" > < a name = "l00995" > < / a > < span class = "lineno" > 995< / span >   < span class = "keywordtype" > size_t< / span > nreorder = 0;< / div >
< div class = "line" > < a name = "l00996" > < / a > < span class = "lineno" > 996< / span >   < / div >
< div class = "line" > < a name = "l00997" > < / a > < span class = "lineno" > 997< / span >   < span class = "preprocessor" > #pragma omp for< / span > < / div >
< div class = "line" > < a name = "l00998" > < / a > < span class = "lineno" > 998< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00999" > < / a > < span class = "lineno" > 999< / span >   idx_t * idxi = labels + i * k;< / div >
< div class = "line" > < a name = "l01000" > < / a > < span class = "lineno" > 1000< / span >   < span class = "keywordtype" > float< / span > * simi = distances + i * k;< / div >
< div class = "line" > < a name = "l01001" > < / a > < span class = "lineno" > 1001< / span >   dis-> set_query(x + i * d);< / div >
< div class = "line" > < a name = "l01002" > < / a > < span class = "lineno" > 1002< / span >   < / div >
< div class = "line" > < a name = "l01003" > < / a > < span class = "lineno" > 1003< / span >   maxheap_heapify (k, simi, idxi);< / div >
< div class = "line" > < a name = "l01004" > < / a > < span class = "lineno" > 1004< / span >   hnsw.search (*dis, k, idxi, simi, vt);< / div >
< div class = "line" > < a name = "l01005" > < / a > < span class = "lineno" > 1005< / span >   < / div >
< div class = "line" > < a name = "l01006" > < / a > < span class = "lineno" > 1006< / span >   maxheap_reorder (k, simi, idxi);< / div >
< div class = "line" > < a name = "l01007" > < / a > < span class = "lineno" > 1007< / span >   < / div >
< div class = "line" > < a name = "l01008" > < / a > < span class = "lineno" > 1008< / span >   < span class = "keywordflow" > if< / span > (reconstruct_from_neighbors & & < / div >
< div class = "line" > < a name = "l01009" > < / a > < span class = "lineno" > 1009< / span >   reconstruct_from_neighbors-> k_reorder != 0) {< / div >
< div class = "line" > < a name = "l01010" > < / a > < span class = "lineno" > 1010< / span >   < span class = "keywordtype" > int< / span > k_reorder = reconstruct_from_neighbors-> k_reorder;< / div >
< div class = "line" > < a name = "l01011" > < / a > < span class = "lineno" > 1011< / span >   < span class = "keywordflow" > if< / span > (k_reorder == -1 || k_reorder > k) k_reorder = k;< / div >
< div class = "line" > < a name = "l01012" > < / a > < span class = "lineno" > 1012< / span >   < / div >
< div class = "line" > < a name = "l01013" > < / a > < span class = "lineno" > 1013< / span >   nreorder += reconstruct_from_neighbors-> compute_distances(< / div >
< div class = "line" > < a name = "l01014" > < / a > < span class = "lineno" > 1014< / span >   k_reorder, idxi, x + i * d, simi);< / div >
< div class = "line" > < a name = "l01015" > < / a > < span class = "lineno" > 1015< / span >   < / div >
< div class = "line" > < a name = "l01016" > < / a > < span class = "lineno" > 1016< / span >   < span class = "comment" > // sort top k_reorder< / span > < / div >
< div class = "line" > < a name = "l01017" > < / a > < span class = "lineno" > 1017< / span >   maxheap_heapify (k_reorder, simi, idxi, simi, idxi, k_reorder);< / div >
< div class = "line" > < a name = "l01018" > < / a > < span class = "lineno" > 1018< / span >   maxheap_reorder (k_reorder, simi, idxi);< / div >
< div class = "line" > < a name = "l01019" > < / a > < span class = "lineno" > 1019< / span >   }< / div >
< div class = "line" > < a name = "l01020" > < / a > < span class = "lineno" > 1020< / span >   }< / div >
< div class = "line" > < a name = "l01021" > < / a > < span class = "lineno" > 1021< / span >   < span class = "preprocessor" > #pragma omp critical< / span > < / div >
< div class = "line" > < a name = "l01022" > < / a > < span class = "lineno" > 1022< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l01023" > < / a > < span class = "lineno" > 1023< / span >   hnsw_stats.nreorder += nreorder;< / div >
< div class = "line" > < a name = "l01024" > < / a > < span class = "lineno" > 1024< / span >   }< / div >
< div class = "line" > < a name = "l01025" > < / a > < span class = "lineno" > 1025< / span >   }< / div >
< div class = "line" > < a name = "l01026" > < / a > < span class = "lineno" > 1026< / span >   < / div >
< div class = "line" > < a name = "l01027" > < / a > < span class = "lineno" > 1027< / span >   < / div >
< div class = "line" > < a name = "l01028" > < / a > < span class = "lineno" > 1028< / span >   }< / div >
< div class = "line" > < a name = "l01029" > < / a > < span class = "lineno" > 1029< / span >   < / div >
< div class = "line" > < a name = "l01030" > < / a > < span class = "lineno" > 1030< / span >   < / div >
< div class = "line" > < a name = "l01031" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexHNSW.html#a04a761ce17d0f9040b3bc8a77bd627d9" > 1031< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexHNSW.html#a04a761ce17d0f9040b3bc8a77bd627d9" > IndexHNSW::add< / a > (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< / div >
< div class = "line" > < a name = "l01032" > < / a > < span class = "lineno" > 1032< / span >   {< / div >
< div class = "line" > < a name = "l01033" > < / a > < span class = "lineno" > 1033< / span >   FAISS_THROW_IF_NOT(< a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > );< / div >
< div class = "line" > < a name = "l01034" > < / a > < span class = "lineno" > 1034< / span >   < span class = "keywordtype" > int< / span > n0 = < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l01035" > < / a > < span class = "lineno" > 1035< / span >   storage-> < a class = "code" href = "structfaiss_1_1Index.html#a1b5e9ac70adbce0897dd6c8276ad96f2" > add< / a > (n, x);< / div >
< div class = "line" > < a name = "l01036" > < / a > < span class = "lineno" > 1036< / span >   ntotal = storage-> < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l01037" > < / a > < span class = "lineno" > 1037< / span >   < / div >
< div class = "line" > < a name = "l01038" > < / a > < span class = "lineno" > 1038< / span >   hnsw_add_vertices (*< span class = "keyword" > this< / span > , n0, n, x, verbose,< / div >
< div class = "line" > < a name = "l01039" > < / a > < span class = "lineno" > 1039< / span >   hnsw.levels.size() == < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > );< / div >
< div class = "line" > < a name = "l01040" > < / a > < span class = "lineno" > 1040< / span >   < / div >
< div class = "line" > < a name = "l01041" > < / a > < span class = "lineno" > 1041< / span >   }< / div >
< div class = "line" > < a name = "l01042" > < / a > < span class = "lineno" > 1042< / span >   < / div >
< div class = "line" > < a name = "l01043" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexHNSW.html#ad4b9f97d42e2521e01f8b60012985396" > 1043< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexHNSW.html#ad4b9f97d42e2521e01f8b60012985396" > IndexHNSW::reset< / a > ()< / div >
< div class = "line" > < a name = "l01044" > < / a > < span class = "lineno" > 1044< / span >   {< / div >
< div class = "line" > < a name = "l01045" > < / a > < span class = "lineno" > 1045< / span >   hnsw.reset();< / div >
< div class = "line" > < a name = "l01046" > < / a > < span class = "lineno" > 1046< / span >   storage-> < a class = "code" href = "structfaiss_1_1Index.html#a849361f5f0ab0aba8d419c86f2594191" > reset< / a > ();< / div >
< div class = "line" > < a name = "l01047" > < / a > < span class = "lineno" > 1047< / span >   ntotal = 0;< / div >
< div class = "line" > < a name = "l01048" > < / a > < span class = "lineno" > 1048< / span >   }< / div >
< div class = "line" > < a name = "l01049" > < / a > < span class = "lineno" > 1049< / span >   < / div >
< div class = "line" > < a name = "l01050" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexHNSW.html#a660e5c8de1ba9c71bf3fe1f3bf0c8812" > 1050< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexHNSW.html#a660e5c8de1ba9c71bf3fe1f3bf0c8812" > IndexHNSW::reconstruct< / a > (idx_t key, < span class = "keywordtype" > float< / span > * recons)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01051" > < / a > < span class = "lineno" > 1051< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01052" > < / a > < span class = "lineno" > 1052< / span >   storage-> < a class = "code" href = "structfaiss_1_1Index.html#aaef6f4132b1f390121ebb11058baf190" > reconstruct< / a > (key, recons);< / div >
< div class = "line" > < a name = "l01053" > < / a > < span class = "lineno" > 1053< / span >   }< / div >
< div class = "line" > < a name = "l01054" > < / a > < span class = "lineno" > 1054< / span >   < / div >
< div class = "line" > < a name = "l01055" > < / a > < span class = "lineno" > 1055< / span >   < span class = "keywordtype" > void< / span > IndexHNSW::shrink_level_0_neighbors(< span class = "keywordtype" > int< / span > new_size)< / div >
< div class = "line" > < a name = "l01056" > < / a > < span class = "lineno" > 1056< / span >   {< / div >
< div class = "line" > < a name = "l01057" > < / a > < span class = "lineno" > 1057< / span >   < span class = "preprocessor" > #pragma omp parallel< / span > < / div >
< div class = "line" > < a name = "l01058" > < / a > < span class = "lineno" > 1058< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l01059" > < / a > < span class = "lineno" > 1059< / span >   DistanceComputer *dis = get_distance_computer();< / div >
< div class = "line" > < a name = "l01060" > < / a > < span class = "lineno" > 1060< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter1.html" > ScopeDeleter1< DistanceComputer> < / a > del(dis);< / div >
< div class = "line" > < a name = "l01061" > < / a > < span class = "lineno" > 1061< / span >   < / div >
< div class = "line" > < a name = "l01062" > < / a > < span class = "lineno" > 1062< / span >   < span class = "preprocessor" > #pragma omp for< / span > < / div >
< div class = "line" > < a name = "l01063" > < / a > < span class = "lineno" > 1063< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (idx_t i = 0; i < < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ; i++) {< / div >
< div class = "line" > < a name = "l01064" > < / a > < span class = "lineno" > 1064< / span >   < / div >
< div class = "line" > < a name = "l01065" > < / a > < span class = "lineno" > 1065< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l01066" > < / a > < span class = "lineno" > 1066< / span >   hnsw.neighbor_range(i, 0, & begin, & end);< / div >
< div class = "line" > < a name = "l01067" > < / a > < span class = "lineno" > 1067< / span >   < / div >
< div class = "line" > < a name = "l01068" > < / a > < span class = "lineno" > 1068< / span >   std::priority_queue< NodeDistFarther> initial_list;< / div >
< div class = "line" > < a name = "l01069" > < / a > < span class = "lineno" > 1069< / span >   < / div >
< div class = "line" > < a name = "l01070" > < / a > < span class = "lineno" > 1070< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l01071" > < / a > < span class = "lineno" > 1071< / span >   < span class = "keywordtype" > int< / span > v1 = hnsw.neighbors[j];< / div >
< div class = "line" > < a name = "l01072" > < / a > < span class = "lineno" > 1072< / span >   < span class = "keywordflow" > if< / span > (v1 < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l01073" > < / a > < span class = "lineno" > 1073< / span >   initial_list.emplace(dis-> symmetric_dis(i, v1), v1);< / div >
< div class = "line" > < a name = "l01074" > < / a > < span class = "lineno" > 1074< / span >   < / div >
< div class = "line" > < a name = "l01075" > < / a > < span class = "lineno" > 1075< / span >   < span class = "comment" > // initial_list.emplace(qdis(v1), v1);< / span > < / div >
< div class = "line" > < a name = "l01076" > < / a > < span class = "lineno" > 1076< / span >   }< / div >
< div class = "line" > < a name = "l01077" > < / a > < span class = "lineno" > 1077< / span >   < / div >
< div class = "line" > < a name = "l01078" > < / a > < span class = "lineno" > 1078< / span >   std::vector< NodeDistFarther> shrunk_list;< / div >
< div class = "line" > < a name = "l01079" > < / a > < span class = "lineno" > 1079< / span >   shrink_neighbor_list (*dis, initial_list, shrunk_list, new_size);< / div >
< div class = "line" > < a name = "l01080" > < / a > < span class = "lineno" > 1080< / span >   < / div >
< div class = "line" > < a name = "l01081" > < / a > < span class = "lineno" > 1081< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l01082" > < / a > < span class = "lineno" > 1082< / span >   < span class = "keywordflow" > if< / span > (j - begin < shrunk_list.size())< / div >
< div class = "line" > < a name = "l01083" > < / a > < span class = "lineno" > 1083< / span >   hnsw.neighbors[j] = shrunk_list[j - begin].id;< / div >
< div class = "line" > < a name = "l01084" > < / a > < span class = "lineno" > 1084< / span >   < span class = "keywordflow" > else< / span > < / div >
< div class = "line" > < a name = "l01085" > < / a > < span class = "lineno" > 1085< / span >   hnsw.neighbors[j] = -1;< / div >
< div class = "line" > < a name = "l01086" > < / a > < span class = "lineno" > 1086< / span >   }< / div >
< div class = "line" > < a name = "l01087" > < / a > < span class = "lineno" > 1087< / span >   }< / div >
< div class = "line" > < a name = "l01088" > < / a > < span class = "lineno" > 1088< / span >   }< / div >
< div class = "line" > < a name = "l01089" > < / a > < span class = "lineno" > 1089< / span >   < / div >
< div class = "line" > < a name = "l01090" > < / a > < span class = "lineno" > 1090< / span >   }< / div >
< div class = "line" > < a name = "l01091" > < / a > < span class = "lineno" > 1091< / span >   < / div >
< div class = "line" > < a name = "l01092" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexHNSW.html#a5b619a41ddd52f0377efb701829c1e43" > 1092< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexHNSW.html#a5b619a41ddd52f0377efb701829c1e43" > IndexHNSW::search_level_0< / a > (< / div >
< div class = "line" > < a name = "l01093" > < / a > < span class = "lineno" > 1093< / span >   idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x, idx_t k,< / div >
< div class = "line" > < a name = "l01094" > < / a > < span class = "lineno" > 1094< / span >   < span class = "keyword" > const< / span > storage_idx_t *nearest, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *nearest_d,< / div >
< div class = "line" > < a name = "l01095" > < / a > < span class = "lineno" > 1095< / span >   < span class = "keywordtype" > float< / span > *distances, idx_t *labels, < span class = "keywordtype" > int< / span > nprobe,< / div >
< div class = "line" > < a name = "l01096" > < / a > < span class = "lineno" > 1096< / span >   < span class = "keywordtype" > int< / span > search_type)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01097" > < / a > < span class = "lineno" > 1097< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01098" > < / a > < span class = "lineno" > 1098< / span >   < / div >
< div class = "line" > < a name = "l01099" > < / a > < span class = "lineno" > 1099< / span >   storage_idx_t ntotal = hnsw.levels.size();< / div >
< div class = "line" > < a name = "l01100" > < / a > < span class = "lineno" > 1100< / span >   < span class = "preprocessor" > #pragma omp parallel< / span > < / div >
< div class = "line" > < a name = "l01101" > < / a > < span class = "lineno" > 1101< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l01102" > < / a > < span class = "lineno" > 1102< / span >   DistanceComputer *qdis = get_distance_computer();< / div >
< div class = "line" > < a name = "l01103" > < / a > < span class = "lineno" > 1103< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter1.html" > ScopeDeleter1< DistanceComputer> < / a > del(qdis);< / div >
< div class = "line" > < a name = "l01104" > < / a > < span class = "lineno" > 1104< / span >   < / div >
< div class = "line" > < a name = "l01105" > < / a > < span class = "lineno" > 1105< / span >   < a class = "code" href = "structfaiss_1_1VisitedTable.html" > VisitedTable< / a > vt (ntotal);< / div >
< div class = "line" > < a name = "l01106" > < / a > < span class = "lineno" > 1106< / span >   < / div >
< div class = "line" > < a name = "l01107" > < / a > < span class = "lineno" > 1107< / span >   < span class = "preprocessor" > #pragma omp for< / span > < / div >
< div class = "line" > < a name = "l01108" > < / a > < span class = "lineno" > 1108< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (idx_t i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l01109" > < / a > < span class = "lineno" > 1109< / span >   idx_t * idxi = labels + i * k;< / div >
< div class = "line" > < a name = "l01110" > < / a > < span class = "lineno" > 1110< / span >   < span class = "keywordtype" > float< / span > * simi = distances + i * k;< / div >
< div class = "line" > < a name = "l01111" > < / a > < span class = "lineno" > 1111< / span >   < / div >
< div class = "line" > < a name = "l01112" > < / a > < span class = "lineno" > 1112< / span >   qdis-> set_query(x + i * d);< / div >
< div class = "line" > < a name = "l01113" > < / a > < span class = "lineno" > 1113< / span >   maxheap_heapify (k, simi, idxi);< / div >
< div class = "line" > < a name = "l01114" > < / a > < span class = "lineno" > 1114< / span >   < / div >
< div class = "line" > < a name = "l01115" > < / a > < span class = "lineno" > 1115< / span >   < span class = "keywordflow" > if< / span > (search_type == 1) {< / div >
< div class = "line" > < a name = "l01116" > < / a > < span class = "lineno" > 1116< / span >   < / div >
< div class = "line" > < a name = "l01117" > < / a > < span class = "lineno" > 1117< / span >   < span class = "keywordtype" > int< / span > nres = 0;< / div >
< div class = "line" > < a name = "l01118" > < / a > < span class = "lineno" > 1118< / span >   < / div >
< div class = "line" > < a name = "l01119" > < / a > < span class = "lineno" > 1119< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < nprobe; j++) {< / div >
< div class = "line" > < a name = "l01120" > < / a > < span class = "lineno" > 1120< / span >   storage_idx_t cj = nearest[i * nprobe + j];< / div >
< div class = "line" > < a name = "l01121" > < / a > < span class = "lineno" > 1121< / span >   < / div >
< div class = "line" > < a name = "l01122" > < / a > < span class = "lineno" > 1122< / span >   < span class = "keywordflow" > if< / span > (cj < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l01123" > < / a > < span class = "lineno" > 1123< / span >   < / div >
< div class = "line" > < a name = "l01124" > < / a > < span class = "lineno" > 1124< / span >   < span class = "keywordflow" > if< / span > (vt.< a class = "code" href = "structfaiss_1_1VisitedTable.html#a18a972137362ff04a38943d66fc19dcb" > get< / a > (cj)) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l01125" > < / a > < span class = "lineno" > 1125< / span >   < / div >
< div class = "line" > < a name = "l01126" > < / a > < span class = "lineno" > 1126< / span >   < span class = "keywordtype" > int< / span > candidates_size = std::max(hnsw.efSearch, < span class = "keywordtype" > int< / span > (k));< / div >
< div class = "line" > < a name = "l01127" > < / a > < span class = "lineno" > 1127< / span >   MinimaxHeap candidates(candidates_size);< / div >
< div class = "line" > < a name = "l01128" > < / a > < span class = "lineno" > 1128< / span >   < / div >
< div class = "line" > < a name = "l01129" > < / a > < span class = "lineno" > 1129< / span >   candidates.push(cj, nearest_d[i * nprobe + j]);< / div >
< div class = "line" > < a name = "l01130" > < / a > < span class = "lineno" > 1130< / span >   < / div >
< div class = "line" > < a name = "l01131" > < / a > < span class = "lineno" > 1131< / span >   nres = search_from_candidates (< / div >
< div class = "line" > < a name = "l01132" > < / a > < span class = "lineno" > 1132< / span >   hnsw, *qdis, k, idxi, simi,< / div >
< div class = "line" > < a name = "l01133" > < / a > < span class = "lineno" > 1133< / span >   candidates, vt, 0, nres);< / div >
< div class = "line" > < a name = "l01134" > < / a > < span class = "lineno" > 1134< / span >   }< / div >
< div class = "line" > < a name = "l01135" > < / a > < span class = "lineno" > 1135< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (search_type == 2) {< / div >
< div class = "line" > < a name = "l01136" > < / a > < span class = "lineno" > 1136< / span >   < / div >
< div class = "line" > < a name = "l01137" > < / a > < span class = "lineno" > 1137< / span >   < span class = "keywordtype" > int< / span > candidates_size = std::max(hnsw.efSearch, < span class = "keywordtype" > int< / span > (k));< / div >
< div class = "line" > < a name = "l01138" > < / a > < span class = "lineno" > 1138< / span >   candidates_size = std::max(candidates_size, nprobe);< / div >
< div class = "line" > < a name = "l01139" > < / a > < span class = "lineno" > 1139< / span >   < / div >
< div class = "line" > < a name = "l01140" > < / a > < span class = "lineno" > 1140< / span >   MinimaxHeap candidates(candidates_size);< / div >
< div class = "line" > < a name = "l01141" > < / a > < span class = "lineno" > 1141< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < nprobe; j++) {< / div >
< div class = "line" > < a name = "l01142" > < / a > < span class = "lineno" > 1142< / span >   storage_idx_t cj = nearest[i * nprobe + j];< / div >
< div class = "line" > < a name = "l01143" > < / a > < span class = "lineno" > 1143< / span >   < / div >
< div class = "line" > < a name = "l01144" > < / a > < span class = "lineno" > 1144< / span >   < span class = "keywordflow" > if< / span > (cj < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l01145" > < / a > < span class = "lineno" > 1145< / span >   candidates.push(cj, nearest_d[i * nprobe + j]);< / div >
< div class = "line" > < a name = "l01146" > < / a > < span class = "lineno" > 1146< / span >   }< / div >
< div class = "line" > < a name = "l01147" > < / a > < span class = "lineno" > 1147< / span >   search_from_candidates (< / div >
< div class = "line" > < a name = "l01148" > < / a > < span class = "lineno" > 1148< / span >   hnsw, *qdis, k, idxi, simi,< / div >
< div class = "line" > < a name = "l01149" > < / a > < span class = "lineno" > 1149< / span >   candidates, vt, 0);< / div >
< div class = "line" > < a name = "l01150" > < / a > < span class = "lineno" > 1150< / span >   < / div >
< div class = "line" > < a name = "l01151" > < / a > < span class = "lineno" > 1151< / span >   }< / div >
< div class = "line" > < a name = "l01152" > < / a > < span class = "lineno" > 1152< / span >   vt.< a class = "code" href = "structfaiss_1_1VisitedTable.html#a76223893c8c3a577473092b3bb8a2446" > advance< / a > ();< / div >
< div class = "line" > < a name = "l01153" > < / a > < span class = "lineno" > 1153< / span >   < / div >
< div class = "line" > < a name = "l01154" > < / a > < span class = "lineno" > 1154< / span >   maxheap_reorder (k, simi, idxi);< / div >
< div class = "line" > < a name = "l01155" > < / a > < span class = "lineno" > 1155< / span >   < / div >
< div class = "line" > < a name = "l01156" > < / a > < span class = "lineno" > 1156< / span >   }< / div >
< div class = "line" > < a name = "l01157" > < / a > < span class = "lineno" > 1157< / span >   }< / div >
< div class = "line" > < a name = "l01158" > < / a > < span class = "lineno" > 1158< / span >   < / div >
< div class = "line" > < a name = "l01159" > < / a > < span class = "lineno" > 1159< / span >   < / div >
< div class = "line" > < a name = "l01160" > < / a > < span class = "lineno" > 1160< / span >   }< / div >
< div class = "line" > < a name = "l01161" > < / a > < span class = "lineno" > 1161< / span >   < / div >
< div class = "line" > < a name = "l01162" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexHNSW.html#a9a86c58212f3f9cf88394f5297cba525" > 1162< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexHNSW.html#a9a86c58212f3f9cf88394f5297cba525" > IndexHNSW::init_level_0_from_knngraph< / a > (< / div >
< div class = "line" > < a name = "l01163" > < / a > < span class = "lineno" > 1163< / span >   < span class = "keywordtype" > int< / span > k, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *D, < span class = "keyword" > const< / span > idx_t *I)< / div >
< div class = "line" > < a name = "l01164" > < / a > < span class = "lineno" > 1164< / span >   {< / div >
< div class = "line" > < a name = "l01165" > < / a > < span class = "lineno" > 1165< / span >   < span class = "keywordtype" > int< / span > dest_size = hnsw.nb_neighbors (0);< / div >
< div class = "line" > < a name = "l01166" > < / a > < span class = "lineno" > 1166< / span >   < / div >
< div class = "line" > < a name = "l01167" > < / a > < span class = "lineno" > 1167< / span >   < span class = "preprocessor" > #pragma omp parallel for< / span > < / div >
< div class = "line" > < a name = "l01168" > < / a > < span class = "lineno" > 1168< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (idx_t i = 0; i < < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ; i++) {< / div >
< div class = "line" > < a name = "l01169" > < / a > < span class = "lineno" > 1169< / span >   DistanceComputer *qdis = get_distance_computer();< / div >
< div class = "line" > < a name = "l01170" > < / a > < span class = "lineno" > 1170< / span >   < span class = "keywordtype" > float< / span > vec[< a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > ];< / div >
< div class = "line" > < a name = "l01171" > < / a > < span class = "lineno" > 1171< / span >   storage-> < a class = "code" href = "structfaiss_1_1Index.html#aaef6f4132b1f390121ebb11058baf190" > reconstruct< / a > (i, vec);< / div >
< div class = "line" > < a name = "l01172" > < / a > < span class = "lineno" > 1172< / span >   qdis-> set_query(vec);< / div >
< div class = "line" > < a name = "l01173" > < / a > < span class = "lineno" > 1173< / span >   < / div >
< div class = "line" > < a name = "l01174" > < / a > < span class = "lineno" > 1174< / span >   std::priority_queue< NodeDistFarther> initial_list;< / div >
< div class = "line" > < a name = "l01175" > < / a > < span class = "lineno" > 1175< / span >   < / div >
< div class = "line" > < a name = "l01176" > < / a > < span class = "lineno" > 1176< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = 0; j < k; j++) {< / div >
< div class = "line" > < a name = "l01177" > < / a > < span class = "lineno" > 1177< / span >   < span class = "keywordtype" > int< / span > v1 = I[i * k + j];< / div >
< div class = "line" > < a name = "l01178" > < / a > < span class = "lineno" > 1178< / span >   < span class = "keywordflow" > if< / span > (v1 == i) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l01179" > < / a > < span class = "lineno" > 1179< / span >   < span class = "keywordflow" > if< / span > (v1 < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l01180" > < / a > < span class = "lineno" > 1180< / span >   initial_list.emplace(D[i * k + j], v1);< / div >
< div class = "line" > < a name = "l01181" > < / a > < span class = "lineno" > 1181< / span >   }< / div >
< div class = "line" > < a name = "l01182" > < / a > < span class = "lineno" > 1182< / span >   < / div >
< div class = "line" > < a name = "l01183" > < / a > < span class = "lineno" > 1183< / span >   std::vector< NodeDistFarther> shrunk_list;< / div >
< div class = "line" > < a name = "l01184" > < / a > < span class = "lineno" > 1184< / span >   shrink_neighbor_list (*qdis, initial_list, shrunk_list, dest_size);< / div >
< div class = "line" > < a name = "l01185" > < / a > < span class = "lineno" > 1185< / span >   < / div >
< div class = "line" > < a name = "l01186" > < / a > < span class = "lineno" > 1186< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l01187" > < / a > < span class = "lineno" > 1187< / span >   hnsw.neighbor_range(i, 0, & begin, & end);< / div >
< div class = "line" > < a name = "l01188" > < / a > < span class = "lineno" > 1188< / span >   < / div >
< div class = "line" > < a name = "l01189" > < / a > < span class = "lineno" > 1189< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l01190" > < / a > < span class = "lineno" > 1190< / span >   < span class = "keywordflow" > if< / span > (j - begin < shrunk_list.size())< / div >
< div class = "line" > < a name = "l01191" > < / a > < span class = "lineno" > 1191< / span >   hnsw.neighbors[j] = shrunk_list[j - begin].id;< / div >
< div class = "line" > < a name = "l01192" > < / a > < span class = "lineno" > 1192< / span >   < span class = "keywordflow" > else< / span > < / div >
< div class = "line" > < a name = "l01193" > < / a > < span class = "lineno" > 1193< / span >   hnsw.neighbors[j] = -1;< / div >
< div class = "line" > < a name = "l01194" > < / a > < span class = "lineno" > 1194< / span >   }< / div >
< div class = "line" > < a name = "l01195" > < / a > < span class = "lineno" > 1195< / span >   }< / div >
< div class = "line" > < a name = "l01196" > < / a > < span class = "lineno" > 1196< / span >   }< / div >
< div class = "line" > < a name = "l01197" > < / a > < span class = "lineno" > 1197< / span >   < / div >
< div class = "line" > < a name = "l01198" > < / a > < span class = "lineno" > 1198< / span >   < / div >
< div class = "line" > < a name = "l01199" > < / a > < span class = "lineno" > 1199< / span >   < / div >
< div class = "line" > < a name = "l01200" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexHNSW.html#ab9c75063090927f8f65d1896b6949af4" > 1200< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexHNSW.html#ab9c75063090927f8f65d1896b6949af4" > IndexHNSW::init_level_0_from_entry_points< / a > (< / div >
< div class = "line" > < a name = "l01201" > < / a > < span class = "lineno" > 1201< / span >   < span class = "keywordtype" > int< / span > n, < span class = "keyword" > const< / span > storage_idx_t *points,< / div >
< div class = "line" > < a name = "l01202" > < / a > < span class = "lineno" > 1202< / span >   < span class = "keyword" > const< / span > storage_idx_t *nearests)< / div >
< div class = "line" > < a name = "l01203" > < / a > < span class = "lineno" > 1203< / span >   {< / div >
< div class = "line" > < a name = "l01204" > < / a > < span class = "lineno" > 1204< / span >   < / div >
< div class = "line" > < a name = "l01205" > < / a > < span class = "lineno" > 1205< / span >   std::vector< omp_lock_t> locks(ntotal);< / div >
< div class = "line" > < a name = "l01206" > < / a > < span class = "lineno" > 1206< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ; i++)< / div >
< div class = "line" > < a name = "l01207" > < / a > < span class = "lineno" > 1207< / span >   omp_init_lock(& locks[i]);< / div >
< div class = "line" > < a name = "l01208" > < / a > < span class = "lineno" > 1208< / span >   < / div >
< div class = "line" > < a name = "l01209" > < / a > < span class = "lineno" > 1209< / span >   < span class = "preprocessor" > #pragma omp parallel< / span > < / div >
< div class = "line" > < a name = "l01210" > < / a > < span class = "lineno" > 1210< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l01211" > < / a > < span class = "lineno" > 1211< / span >   < a class = "code" href = "structfaiss_1_1VisitedTable.html" > VisitedTable< / a > vt (ntotal);< / div >
< div class = "line" > < a name = "l01212" > < / a > < span class = "lineno" > 1212< / span >   < / div >
< div class = "line" > < a name = "l01213" > < / a > < span class = "lineno" > 1213< / span >   DistanceComputer *dis = get_distance_computer();< / div >
< div class = "line" > < a name = "l01214" > < / a > < span class = "lineno" > 1214< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter1.html" > ScopeDeleter1< DistanceComputer> < / a > del(dis);< / div >
< div class = "line" > < a name = "l01215" > < / a > < span class = "lineno" > 1215< / span >   < span class = "keywordtype" > float< / span > vec[storage-> < a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > ];< / div >
< div class = "line" > < a name = "l01216" > < / a > < span class = "lineno" > 1216< / span >   < / div >
< div class = "line" > < a name = "l01217" > < / a > < span class = "lineno" > 1217< / span >   < span class = "preprocessor" > #pragma omp for schedule(dynamic)< / span > < / div >
< div class = "line" > < a name = "l01218" > < / a > < span class = "lineno" > 1218< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l01219" > < / a > < span class = "lineno" > 1219< / span >   storage_idx_t pt_id = points[i];< / div >
< div class = "line" > < a name = "l01220" > < / a > < span class = "lineno" > 1220< / span >   storage_idx_t nearest = nearests[i];< / div >
< div class = "line" > < a name = "l01221" > < / a > < span class = "lineno" > 1221< / span >   storage-> < a class = "code" href = "structfaiss_1_1Index.html#aaef6f4132b1f390121ebb11058baf190" > reconstruct< / a > (pt_id, vec);< / div >
< div class = "line" > < a name = "l01222" > < / a > < span class = "lineno" > 1222< / span >   dis-> set_query (vec);< / div >
< div class = "line" > < a name = "l01223" > < / a > < span class = "lineno" > 1223< / span >   < / div >
< div class = "line" > < a name = "l01224" > < / a > < span class = "lineno" > 1224< / span >   add_links_starting_from(hnsw, *dis, pt_id, nearest, (*dis)(nearest),< / div >
< div class = "line" > < a name = "l01225" > < / a > < span class = "lineno" > 1225< / span >   0, locks.data(), vt);< / div >
< div class = "line" > < a name = "l01226" > < / a > < span class = "lineno" > 1226< / span >   < / div >
< div class = "line" > < a name = "l01227" > < / a > < span class = "lineno" > 1227< / span >   < span class = "keywordflow" > if< / span > (verbose & & i % 10000 == 0) {< / div >
< div class = "line" > < a name = "l01228" > < / a > < span class = "lineno" > 1228< / span >   printf(< span class = "stringliteral" > " %d / %d\r" < / span > , i, n);< / div >
< div class = "line" > < a name = "l01229" > < / a > < span class = "lineno" > 1229< / span >   fflush(stdout);< / div >
< div class = "line" > < a name = "l01230" > < / a > < span class = "lineno" > 1230< / span >   }< / div >
< div class = "line" > < a name = "l01231" > < / a > < span class = "lineno" > 1231< / span >   }< / div >
< div class = "line" > < a name = "l01232" > < / a > < span class = "lineno" > 1232< / span >   }< / div >
< div class = "line" > < a name = "l01233" > < / a > < span class = "lineno" > 1233< / span >   < span class = "keywordflow" > if< / span > (verbose) {< / div >
< div class = "line" > < a name = "l01234" > < / a > < span class = "lineno" > 1234< / span >   printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l01235" > < / a > < span class = "lineno" > 1235< / span >   }< / div >
< div class = "line" > < a name = "l01236" > < / a > < span class = "lineno" > 1236< / span >   < / div >
< div class = "line" > < a name = "l01237" > < / a > < span class = "lineno" > 1237< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ; i++)< / div >
< div class = "line" > < a name = "l01238" > < / a > < span class = "lineno" > 1238< / span >   omp_destroy_lock(& locks[i]);< / div >
< div class = "line" > < a name = "l01239" > < / a > < span class = "lineno" > 1239< / span >   }< / div >
< div class = "line" > < a name = "l01240" > < / a > < span class = "lineno" > 1240< / span >   < / div >
< div class = "line" > < a name = "l01241" > < / a > < span class = "lineno" > 1241< / span >   < span class = "keywordtype" > void< / span > IndexHNSW::reorder_links()< / div >
< div class = "line" > < a name = "l01242" > < / a > < span class = "lineno" > 1242< / span >   {< / div >
< div class = "line" > < a name = "l01243" > < / a > < span class = "lineno" > 1243< / span >   < span class = "keywordtype" > int< / span > M = hnsw.nb_neighbors(0);< / div >
< div class = "line" > < a name = "l01244" > < / a > < span class = "lineno" > 1244< / span >   < / div >
< div class = "line" > < a name = "l01245" > < / a > < span class = "lineno" > 1245< / span >   < span class = "preprocessor" > #pragma omp parallel< / span > < / div >
< div class = "line" > < a name = "l01246" > < / a > < span class = "lineno" > 1246< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l01247" > < / a > < span class = "lineno" > 1247< / span >   std::vector< float> distances (M);< / div >
< div class = "line" > < a name = "l01248" > < / a > < span class = "lineno" > 1248< / span >   std::vector< size_t> order (M);< / div >
< div class = "line" > < a name = "l01249" > < / a > < span class = "lineno" > 1249< / span >   std::vector< storage_idx_t> tmp (M);< / div >
< div class = "line" > < a name = "l01250" > < / a > < span class = "lineno" > 1250< / span >   DistanceComputer *dis = get_distance_computer();< / div >
< div class = "line" > < a name = "l01251" > < / a > < span class = "lineno" > 1251< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter1.html" > ScopeDeleter1< DistanceComputer> < / a > del(dis);< / div >
< div class = "line" > < a name = "l01252" > < / a > < span class = "lineno" > 1252< / span >   < / div >
< div class = "line" > < a name = "l01253" > < / a > < span class = "lineno" > 1253< / span >   < span class = "preprocessor" > #pragma omp for< / span > < / div >
< div class = "line" > < a name = "l01254" > < / a > < span class = "lineno" > 1254< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (storage_idx_t i = 0; i < < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ; i++) {< / div >
< div class = "line" > < a name = "l01255" > < / a > < span class = "lineno" > 1255< / span >   < / div >
< div class = "line" > < a name = "l01256" > < / a > < span class = "lineno" > 1256< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l01257" > < / a > < span class = "lineno" > 1257< / span >   hnsw.neighbor_range(i, 0, & begin, & end);< / div >
< div class = "line" > < a name = "l01258" > < / a > < span class = "lineno" > 1258< / span >   < / div >
< div class = "line" > < a name = "l01259" > < / a > < span class = "lineno" > 1259< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l01260" > < / a > < span class = "lineno" > 1260< / span >   storage_idx_t nj = hnsw.neighbors[j];< / div >
< div class = "line" > < a name = "l01261" > < / a > < span class = "lineno" > 1261< / span >   < span class = "keywordflow" > if< / span > (nj < 0) {< / div >
< div class = "line" > < a name = "l01262" > < / a > < span class = "lineno" > 1262< / span >   end = j;< / div >
< div class = "line" > < a name = "l01263" > < / a > < span class = "lineno" > 1263< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l01264" > < / a > < span class = "lineno" > 1264< / span >   }< / div >
< div class = "line" > < a name = "l01265" > < / a > < span class = "lineno" > 1265< / span >   distances[j - begin] = dis-> symmetric_dis(i, nj);< / div >
< div class = "line" > < a name = "l01266" > < / a > < span class = "lineno" > 1266< / span >   tmp [j - begin] = nj;< / div >
< div class = "line" > < a name = "l01267" > < / a > < span class = "lineno" > 1267< / span >   }< / div >
< div class = "line" > < a name = "l01268" > < / a > < span class = "lineno" > 1268< / span >   < / div >
< div class = "line" > < a name = "l01269" > < / a > < span class = "lineno" > 1269< / span >   fvec_argsort (end - begin, distances.data(), order.data());< / div >
< div class = "line" > < a name = "l01270" > < / a > < span class = "lineno" > 1270< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l01271" > < / a > < span class = "lineno" > 1271< / span >   hnsw.neighbors[j] = tmp[order[j - begin]];< / div >
< div class = "line" > < a name = "l01272" > < / a > < span class = "lineno" > 1272< / span >   }< / div >
< div class = "line" > < a name = "l01273" > < / a > < span class = "lineno" > 1273< / span >   }< / div >
< div class = "line" > < a name = "l01274" > < / a > < span class = "lineno" > 1274< / span >   < / div >
< div class = "line" > < a name = "l01275" > < / a > < span class = "lineno" > 1275< / span >   }< / div >
< div class = "line" > < a name = "l01276" > < / a > < span class = "lineno" > 1276< / span >   }< / div >
< div class = "line" > < a name = "l01277" > < / a > < span class = "lineno" > 1277< / span >   < / div >
< div class = "line" > < a name = "l01278" > < / a > < span class = "lineno" > 1278< / span >   < / div >
< div class = "line" > < a name = "l01279" > < / a > < span class = "lineno" > 1279< / span >   < span class = "keywordtype" > void< / span > IndexHNSW::link_singletons()< / div >
< div class = "line" > < a name = "l01280" > < / a > < span class = "lineno" > 1280< / span >   {< / div >
< div class = "line" > < a name = "l01281" > < / a > < span class = "lineno" > 1281< / span >   printf(< span class = "stringliteral" > " search for singletons\n" < / span > );< / div >
< div class = "line" > < a name = "l01282" > < / a > < span class = "lineno" > 1282< / span >   < / div >
< div class = "line" > < a name = "l01283" > < / a > < span class = "lineno" > 1283< / span >   std::vector< bool> seen(ntotal);< / div >
< div class = "line" > < a name = "l01284" > < / a > < span class = "lineno" > 1284< / span >   < / div >
< div class = "line" > < a name = "l01285" > < / a > < span class = "lineno" > 1285< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ; i++) {< / div >
< div class = "line" > < a name = "l01286" > < / a > < span class = "lineno" > 1286< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l01287" > < / a > < span class = "lineno" > 1287< / span >   hnsw.neighbor_range(i, 0, & begin, & end);< / div >
< div class = "line" > < a name = "l01288" > < / a > < span class = "lineno" > 1288< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l01289" > < / a > < span class = "lineno" > 1289< / span >   storage_idx_t ni = hnsw.neighbors[j];< / div >
< div class = "line" > < a name = "l01290" > < / a > < span class = "lineno" > 1290< / span >   < span class = "keywordflow" > if< / span > (ni > = 0) seen[ni] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l01291" > < / a > < span class = "lineno" > 1291< / span >   }< / div >
< div class = "line" > < a name = "l01292" > < / a > < span class = "lineno" > 1292< / span >   }< / div >
< div class = "line" > < a name = "l01293" > < / a > < span class = "lineno" > 1293< / span >   < / div >
< div class = "line" > < a name = "l01294" > < / a > < span class = "lineno" > 1294< / span >   < span class = "keywordtype" > int< / span > n_sing = 0, n_sing_l1 = 0;< / div >
< div class = "line" > < a name = "l01295" > < / a > < span class = "lineno" > 1295< / span >   std::vector< storage_idx_t> singletons;< / div >
< div class = "line" > < a name = "l01296" > < / a > < span class = "lineno" > 1296< / span >   < span class = "keywordflow" > for< / span > (storage_idx_t i = 0; i < < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ; i++) {< / div >
< div class = "line" > < a name = "l01297" > < / a > < span class = "lineno" > 1297< / span >   < span class = "keywordflow" > if< / span > (!seen[i]) {< / div >
< div class = "line" > < a name = "l01298" > < / a > < span class = "lineno" > 1298< / span >   singletons.push_back(i);< / div >
< div class = "line" > < a name = "l01299" > < / a > < span class = "lineno" > 1299< / span >   n_sing++;< / div >
< div class = "line" > < a name = "l01300" > < / a > < span class = "lineno" > 1300< / span >   < span class = "keywordflow" > if< / span > (hnsw.levels[i] > 1)< / div >
< div class = "line" > < a name = "l01301" > < / a > < span class = "lineno" > 1301< / span >   n_sing_l1++;< / div >
< div class = "line" > < a name = "l01302" > < / a > < span class = "lineno" > 1302< / span >   }< / div >
< div class = "line" > < a name = "l01303" > < / a > < span class = "lineno" > 1303< / span >   }< / div >
< div class = "line" > < a name = "l01304" > < / a > < span class = "lineno" > 1304< / span >   < / div >
< div class = "line" > < a name = "l01305" > < / a > < span class = "lineno" > 1305< / span >   printf(< span class = "stringliteral" > " Found %d / %ld singletons (%d appear in a level above)\n" < / span > ,< / div >
< div class = "line" > < a name = "l01306" > < / a > < span class = "lineno" > 1306< / span >   n_sing, ntotal, n_sing_l1);< / div >
< div class = "line" > < a name = "l01307" > < / a > < span class = "lineno" > 1307< / span >   < / div >
< div class = "line" > < a name = "l01308" > < / a > < span class = "lineno" > 1308< / span >   std::vector< float> recons(singletons.size() * < a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > );< / div >
< div class = "line" > < a name = "l01309" > < / a > < span class = "lineno" > 1309< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < singletons.size(); i++) {< / div >
< div class = "line" > < a name = "l01310" > < / a > < span class = "lineno" > 1310< / span >   < / div >
< div class = "line" > < a name = "l01311" > < / a > < span class = "lineno" > 1311< / span >   FAISS_ASSERT(!< span class = "stringliteral" > " not implemented" < / span > );< / div >
< div class = "line" > < a name = "l01312" > < / a > < span class = "lineno" > 1312< / span >   < / div >
< div class = "line" > < a name = "l01313" > < / a > < span class = "lineno" > 1313< / span >   }< / div >
< div class = "line" > < a name = "l01314" > < / a > < span class = "lineno" > 1314< / span >   < / div >
< div class = "line" > < a name = "l01315" > < / a > < span class = "lineno" > 1315< / span >   < / div >
< div class = "line" > < a name = "l01316" > < / a > < span class = "lineno" > 1316< / span >   }< / div >
< div class = "line" > < a name = "l01317" > < / a > < span class = "lineno" > 1317< / span >   < / div >
< div class = "line" > < a name = "l01318" > < / a > < span class = "lineno" > 1318< / span >   < / div >
< div class = "line" > < a name = "l01319" > < / a > < span class = "lineno" > 1319< / span >   < / div >
< div class = "line" > < a name = "l01320" > < / a > < span class = "lineno" > 1320< / span >   < / div >
< div class = "line" > < a name = "l01321" > < / a > < span class = "lineno" > 1321< / span >   < span class = "comment" > // storage that explicitly reconstructs vectors before computing distances< / span > < / div >
< div class = "line" > < a name = "l01322" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1GenericDistanceComputer.html" > 1322< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1GenericDistanceComputer.html" > GenericDistanceComputer< / a > : < a class = "code" href = "structfaiss_1_1HNSW_1_1DistanceComputer.html" > HNSW::DistanceComputer< / a > {< / div >
< div class = "line" > < a name = "l01323" > < / a > < span class = "lineno" > 1323< / span >   < / div >
< div class = "line" > < a name = "l01324" > < / a > < span class = "lineno" > 1324< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1Index.html" > Index< / a > & storage;< / div >
< div class = "line" > < a name = "l01325" > < / a > < span class = "lineno" > 1325< / span >   std::vector< float> buf;< / div >
< div class = "line" > < a name = "l01326" > < / a > < span class = "lineno" > 1326< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *q;< / div >
< div class = "line" > < a name = "l01327" > < / a > < span class = "lineno" > 1327< / span >   < / div >
< div class = "line" > < a name = "l01328" > < / a > < span class = "lineno" > 1328< / span >   < a class = "code" href = "structfaiss_1_1GenericDistanceComputer.html" > GenericDistanceComputer< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1Index.html" > Index< / a > & storage): storage(storage)< / div >
< div class = "line" > < a name = "l01329" > < / a > < span class = "lineno" > 1329< / span >   {< / div >
< div class = "line" > < a name = "l01330" > < / a > < span class = "lineno" > 1330< / span >   d = storage.< a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > ;< / div >
< div class = "line" > < a name = "l01331" > < / a > < span class = "lineno" > 1331< / span >   buf.resize(d * 2);< / div >
< div class = "line" > < a name = "l01332" > < / a > < span class = "lineno" > 1332< / span >   }< / div >
< div class = "line" > < a name = "l01333" > < / a > < span class = "lineno" > 1333< / span >   < / div >
< div class = "line" > < a name = "l01334" > < / a > < span class = "lineno" > 1334< / span >   < span class = "keywordtype" > float< / span > operator () (storage_idx_t i)< span class = "keyword" > override< / span > < / div >
< div class = "line" > < a name = "l01335" > < / a > < span class = "lineno" > 1335< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01336" > < / a > < span class = "lineno" > 1336< / span >   storage.< a class = "code" href = "structfaiss_1_1Index.html#aaef6f4132b1f390121ebb11058baf190" > reconstruct< / a > (i, buf.data());< / div >
< div class = "line" > < a name = "l01337" > < / a > < span class = "lineno" > 1337< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "namespacefaiss.html#a7466bd32de31640860393a701eaac5ad" > fvec_L2sqr< / a > (q, buf.data(), d);< / div >
< div class = "line" > < a name = "l01338" > < / a > < span class = "lineno" > 1338< / span >   }< / div >
< div class = "line" > < a name = "l01339" > < / a > < span class = "lineno" > 1339< / span >   < / div >
< div class = "line" > < a name = "l01340" > < / a > < span class = "lineno" > 1340< / span >   < span class = "keywordtype" > float< / span > symmetric_dis(storage_idx_t i, storage_idx_t j)< span class = "keyword" > override< / span > < / div >
< div class = "line" > < a name = "l01341" > < / a > < span class = "lineno" > 1341< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01342" > < / a > < span class = "lineno" > 1342< / span >   storage.< a class = "code" href = "structfaiss_1_1Index.html#aaef6f4132b1f390121ebb11058baf190" > reconstruct< / a > (i, buf.data());< / div >
< div class = "line" > < a name = "l01343" > < / a > < span class = "lineno" > 1343< / span >   storage.< a class = "code" href = "structfaiss_1_1Index.html#aaef6f4132b1f390121ebb11058baf190" > reconstruct< / a > (j, buf.data() + d);< / div >
< div class = "line" > < a name = "l01344" > < / a > < span class = "lineno" > 1344< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "namespacefaiss.html#a7466bd32de31640860393a701eaac5ad" > fvec_L2sqr< / a > (buf.data() + d, buf.data(), d);< / div >
< div class = "line" > < a name = "l01345" > < / a > < span class = "lineno" > 1345< / span >   }< / div >
< div class = "line" > < a name = "l01346" > < / a > < span class = "lineno" > 1346< / span >   < / div >
< div class = "line" > < a name = "l01347" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1GenericDistanceComputer.html#a07cbd7cd0ed73eae3d0487f2f25b748c" > 1347< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1GenericDistanceComputer.html#a07cbd7cd0ed73eae3d0487f2f25b748c" > set_query< / a > (< span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > override < / span > {< / div >
< div class = "line" > < a name = "l01348" > < / a > < span class = "lineno" > 1348< / span >   q = x;< / div >
< div class = "line" > < a name = "l01349" > < / a > < span class = "lineno" > 1349< / span >   }< / div >
< div class = "line" > < a name = "l01350" > < / a > < span class = "lineno" > 1350< / span >   < / div >
< div class = "line" > < a name = "l01351" > < / a > < span class = "lineno" > 1351< / span >   < / div >
< div class = "line" > < a name = "l01352" > < / a > < span class = "lineno" > 1352< / span >   };< / div >
< div class = "line" > < a name = "l01353" > < / a > < span class = "lineno" > 1353< / span >   < / div >
< div class = "line" > < a name = "l01354" > < / a > < span class = "lineno" > 1354< / span >   HNSW::DistanceComputer * IndexHNSW::get_distance_computer ()< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01355" > < / a > < span class = "lineno" > 1355< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01356" > < / a > < span class = "lineno" > 1356< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > new< / span > GenericDistanceComputer (*storage);< / div >
< div class = "line" > < a name = "l01357" > < / a > < span class = "lineno" > 1357< / span >   }< / div >
< div class = "line" > < a name = "l01358" > < / a > < span class = "lineno" > 1358< / span >   < / div >
< div class = "line" > < a name = "l01359" > < / a > < span class = "lineno" > 1359< / span >   < / div >
< div class = "line" > < a name = "l01360" > < / a > < span class = "lineno" > 1360< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l01361" > < / a > < span class = "lineno" > 1361< / span >   < span class = "comment" > * ReconstructFromNeighbors implementation< / span > < / div >
< div class = "line" > < a name = "l01362" > < / a > < span class = "lineno" > 1362< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l01363" > < / a > < span class = "lineno" > 1363< / span >   < / div >
< div class = "line" > < a name = "l01364" > < / a > < span class = "lineno" > 1364< / span >   < / div >
< div class = "line" > < a name = "l01365" > < / a > < span class = "lineno" > 1365< / span >   ReconstructFromNeighbors::ReconstructFromNeighbors(< / div >
< div class = "line" > < a name = "l01366" > < / a > < span class = "lineno" > 1366< / span >   < span class = "keyword" > const< / span > IndexHNSW & index, < span class = "keywordtype" > size_t< / span > k, < span class = "keywordtype" > size_t< / span > nsq):< / div >
< div class = "line" > < a name = "l01367" > < / a > < span class = "lineno" > 1367< / span >   index(index), k(k), nsq(nsq) {< / div >
< div class = "line" > < a name = "l01368" > < / a > < span class = "lineno" > 1368< / span >   M = index.hnsw.nb_neighbors(0);< / div >
< div class = "line" > < a name = "l01369" > < / a > < span class = "lineno" > 1369< / span >   FAISS_ASSERT(k < = 256);< / div >
< div class = "line" > < a name = "l01370" > < / a > < span class = "lineno" > 1370< / span >   code_size = k == 1 ? 0 : nsq;< / div >
< div class = "line" > < a name = "l01371" > < / a > < span class = "lineno" > 1371< / span >   ntotal = 0;< / div >
< div class = "line" > < a name = "l01372" > < / a > < span class = "lineno" > 1372< / span >   d = index.d;< / div >
< div class = "line" > < a name = "l01373" > < / a > < span class = "lineno" > 1373< / span >   FAISS_ASSERT(d % nsq == 0);< / div >
< div class = "line" > < a name = "l01374" > < / a > < span class = "lineno" > 1374< / span >   dsub = d / nsq;< / div >
< div class = "line" > < a name = "l01375" > < / a > < span class = "lineno" > 1375< / span >   k_reorder = -1;< / div >
< div class = "line" > < a name = "l01376" > < / a > < span class = "lineno" > 1376< / span >   }< / div >
< div class = "line" > < a name = "l01377" > < / a > < span class = "lineno" > 1377< / span >   < / div >
< div class = "line" > < a name = "l01378" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1ReconstructFromNeighbors.html#a6cf260c530e273e4d676804ac71128f8" > 1378< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1ReconstructFromNeighbors.html#a6cf260c530e273e4d676804ac71128f8" > ReconstructFromNeighbors::reconstruct< / a > (storage_idx_t i, < span class = "keywordtype" > float< / span > *x, < span class = "keywordtype" > float< / span > *tmp)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01379" > < / a > < span class = "lineno" > 1379< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01380" > < / a > < span class = "lineno" > 1380< / span >   < / div >
< div class = "line" > < a name = "l01381" > < / a > < span class = "lineno" > 1381< / span >   < / div >
< div class = "line" > < a name = "l01382" > < / a > < span class = "lineno" > 1382< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1HNSW.html" > HNSW< / a > & hnsw = index.hnsw;< / div >
< div class = "line" > < a name = "l01383" > < / a > < span class = "lineno" > 1383< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l01384" > < / a > < span class = "lineno" > 1384< / span >   hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#aa3ae6a80d358e59e3af23f918253f61d" > neighbor_range< / a > (i, 0, & begin, & end);< / div >
< div class = "line" > < a name = "l01385" > < / a > < span class = "lineno" > 1385< / span >   < / div >
< div class = "line" > < a name = "l01386" > < / a > < span class = "lineno" > 1386< / span >   < span class = "keywordflow" > if< / span > (k == 1 || nsq == 1) {< / div >
< div class = "line" > < a name = "l01387" > < / a > < span class = "lineno" > 1387< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * beta;< / div >
< div class = "line" > < a name = "l01388" > < / a > < span class = "lineno" > 1388< / span >   < span class = "keywordflow" > if< / span > (k == 1) {< / div >
< div class = "line" > < a name = "l01389" > < / a > < span class = "lineno" > 1389< / span >   beta = codebook.data();< / div >
< div class = "line" > < a name = "l01390" > < / a > < span class = "lineno" > 1390< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l01391" > < / a > < span class = "lineno" > 1391< / span >   < span class = "keywordtype" > int< / span > idx = codes[i];< / div >
< div class = "line" > < a name = "l01392" > < / a > < span class = "lineno" > 1392< / span >   beta = codebook.data() + idx * (M + 1);< / div >
< div class = "line" > < a name = "l01393" > < / a > < span class = "lineno" > 1393< / span >   }< / div >
< div class = "line" > < a name = "l01394" > < / a > < span class = "lineno" > 1394< / span >   < / div >
< div class = "line" > < a name = "l01395" > < / a > < span class = "lineno" > 1395< / span >   < span class = "keywordtype" > float< / span > w0 = beta[0]; < span class = "comment" > // weight of image itself< / span > < / div >
< div class = "line" > < a name = "l01396" > < / a > < span class = "lineno" > 1396< / span >   index.storage-> reconstruct(i, tmp);< / div >
< div class = "line" > < a name = "l01397" > < / a > < span class = "lineno" > 1397< / span >   < / div >
< div class = "line" > < a name = "l01398" > < / a > < span class = "lineno" > 1398< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > l = 0; l < d; l++)< / div >
< div class = "line" > < a name = "l01399" > < / a > < span class = "lineno" > 1399< / span >   x[l] = w0 * tmp[l];< / div >
< div class = "line" > < a name = "l01400" > < / a > < span class = "lineno" > 1400< / span >   < / div >
< div class = "line" > < a name = "l01401" > < / a > < span class = "lineno" > 1401< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l01402" > < / a > < span class = "lineno" > 1402< / span >   < / div >
< div class = "line" > < a name = "l01403" > < / a > < span class = "lineno" > 1403< / span >   storage_idx_t ji = hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > [j];< / div >
< div class = "line" > < a name = "l01404" > < / a > < span class = "lineno" > 1404< / span >   < span class = "keywordflow" > if< / span > (ji < 0) ji = i;< / div >
< div class = "line" > < a name = "l01405" > < / a > < span class = "lineno" > 1405< / span >   < span class = "keywordtype" > float< / span > w = beta[j - begin + 1];< / div >
< div class = "line" > < a name = "l01406" > < / a > < span class = "lineno" > 1406< / span >   index.storage-> reconstruct(ji, tmp);< / div >
< div class = "line" > < a name = "l01407" > < / a > < span class = "lineno" > 1407< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > l = 0; l < d; l++)< / div >
< div class = "line" > < a name = "l01408" > < / a > < span class = "lineno" > 1408< / span >   x[l] += w * tmp[l];< / div >
< div class = "line" > < a name = "l01409" > < / a > < span class = "lineno" > 1409< / span >   }< / div >
< div class = "line" > < a name = "l01410" > < / a > < span class = "lineno" > 1410< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (nsq == 2) {< / div >
< div class = "line" > < a name = "l01411" > < / a > < span class = "lineno" > 1411< / span >   < span class = "keywordtype" > int< / span > idx0 = codes[2 * i];< / div >
< div class = "line" > < a name = "l01412" > < / a > < span class = "lineno" > 1412< / span >   < span class = "keywordtype" > int< / span > idx1 = codes[2 * i + 1];< / div >
< div class = "line" > < a name = "l01413" > < / a > < span class = "lineno" > 1413< / span >   < / div >
< div class = "line" > < a name = "l01414" > < / a > < span class = "lineno" > 1414< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *beta0 = codebook.data() + idx0 * (M + 1);< / div >
< div class = "line" > < a name = "l01415" > < / a > < span class = "lineno" > 1415< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *beta1 = codebook.data() + (idx1 + k) * (M + 1);< / div >
< div class = "line" > < a name = "l01416" > < / a > < span class = "lineno" > 1416< / span >   < / div >
< div class = "line" > < a name = "l01417" > < / a > < span class = "lineno" > 1417< / span >   index.storage-> reconstruct(i, tmp);< / div >
< div class = "line" > < a name = "l01418" > < / a > < span class = "lineno" > 1418< / span >   < / div >
< div class = "line" > < a name = "l01419" > < / a > < span class = "lineno" > 1419< / span >   < span class = "keywordtype" > float< / span > w0;< / div >
< div class = "line" > < a name = "l01420" > < / a > < span class = "lineno" > 1420< / span >   < / div >
< div class = "line" > < a name = "l01421" > < / a > < span class = "lineno" > 1421< / span >   w0 = beta0[0];< / div >
< div class = "line" > < a name = "l01422" > < / a > < span class = "lineno" > 1422< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > l = 0; l < dsub; l++)< / div >
< div class = "line" > < a name = "l01423" > < / a > < span class = "lineno" > 1423< / span >   x[l] = w0 * tmp[l];< / div >
< div class = "line" > < a name = "l01424" > < / a > < span class = "lineno" > 1424< / span >   < / div >
< div class = "line" > < a name = "l01425" > < / a > < span class = "lineno" > 1425< / span >   w0 = beta1[0];< / div >
< div class = "line" > < a name = "l01426" > < / a > < span class = "lineno" > 1426< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > l = dsub; l < d; l++)< / div >
< div class = "line" > < a name = "l01427" > < / a > < span class = "lineno" > 1427< / span >   x[l] = w0 * tmp[l];< / div >
< div class = "line" > < a name = "l01428" > < / a > < span class = "lineno" > 1428< / span >   < / div >
< div class = "line" > < a name = "l01429" > < / a > < span class = "lineno" > 1429< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l01430" > < / a > < span class = "lineno" > 1430< / span >   storage_idx_t ji = hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > [j];< / div >
< div class = "line" > < a name = "l01431" > < / a > < span class = "lineno" > 1431< / span >   < span class = "keywordflow" > if< / span > (ji < 0) ji = i;< / div >
< div class = "line" > < a name = "l01432" > < / a > < span class = "lineno" > 1432< / span >   index.storage-> reconstruct(ji, tmp);< / div >
< div class = "line" > < a name = "l01433" > < / a > < span class = "lineno" > 1433< / span >   < span class = "keywordtype" > float< / span > w;< / div >
< div class = "line" > < a name = "l01434" > < / a > < span class = "lineno" > 1434< / span >   w = beta0[j - begin + 1];< / div >
< div class = "line" > < a name = "l01435" > < / a > < span class = "lineno" > 1435< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > l = 0; l < dsub; l++)< / div >
< div class = "line" > < a name = "l01436" > < / a > < span class = "lineno" > 1436< / span >   x[l] += w * tmp[l];< / div >
< div class = "line" > < a name = "l01437" > < / a > < span class = "lineno" > 1437< / span >   < / div >
< div class = "line" > < a name = "l01438" > < / a > < span class = "lineno" > 1438< / span >   w = beta1[j - begin + 1];< / div >
< div class = "line" > < a name = "l01439" > < / a > < span class = "lineno" > 1439< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > l = dsub; l < d; l++)< / div >
< div class = "line" > < a name = "l01440" > < / a > < span class = "lineno" > 1440< / span >   x[l] += w * tmp[l];< / div >
< div class = "line" > < a name = "l01441" > < / a > < span class = "lineno" > 1441< / span >   }< / div >
< div class = "line" > < a name = "l01442" > < / a > < span class = "lineno" > 1442< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l01443" > < / a > < span class = "lineno" > 1443< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *betas[nsq];< / div >
< div class = "line" > < a name = "l01444" > < / a > < span class = "lineno" > 1444< / span >   {< / div >
< div class = "line" > < a name = "l01445" > < / a > < span class = "lineno" > 1445< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *b = codebook.data();< / div >
< div class = "line" > < a name = "l01446" > < / a > < span class = "lineno" > 1446< / span >   < span class = "keyword" > const< / span > uint8_t *c = & codes[i * code_size];< / div >
< div class = "line" > < a name = "l01447" > < / a > < span class = "lineno" > 1447< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > sq = 0; sq < nsq; sq++) {< / div >
< div class = "line" > < a name = "l01448" > < / a > < span class = "lineno" > 1448< / span >   betas[sq] = b + (*c++) * (M + 1);< / div >
< div class = "line" > < a name = "l01449" > < / a > < span class = "lineno" > 1449< / span >   b += (M + 1) * k;< / div >
< div class = "line" > < a name = "l01450" > < / a > < span class = "lineno" > 1450< / span >   }< / div >
< div class = "line" > < a name = "l01451" > < / a > < span class = "lineno" > 1451< / span >   }< / div >
< div class = "line" > < a name = "l01452" > < / a > < span class = "lineno" > 1452< / span >   < / div >
< div class = "line" > < a name = "l01453" > < / a > < span class = "lineno" > 1453< / span >   index.storage-> reconstruct(i, tmp);< / div >
< div class = "line" > < a name = "l01454" > < / a > < span class = "lineno" > 1454< / span >   {< / div >
< div class = "line" > < a name = "l01455" > < / a > < span class = "lineno" > 1455< / span >   < span class = "keywordtype" > int< / span > d0 = 0;< / div >
< div class = "line" > < a name = "l01456" > < / a > < span class = "lineno" > 1456< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > sq = 0; sq < nsq; sq++) {< / div >
< div class = "line" > < a name = "l01457" > < / a > < span class = "lineno" > 1457< / span >   < span class = "keywordtype" > float< / span > w = *(betas[sq]++);< / div >
< div class = "line" > < a name = "l01458" > < / a > < span class = "lineno" > 1458< / span >   < span class = "keywordtype" > int< / span > d1 = d0 + dsub;< / div >
< div class = "line" > < a name = "l01459" > < / a > < span class = "lineno" > 1459< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > l = d0; l < d1; l++) {< / div >
< div class = "line" > < a name = "l01460" > < / a > < span class = "lineno" > 1460< / span >   x[l] = w * tmp[l];< / div >
< div class = "line" > < a name = "l01461" > < / a > < span class = "lineno" > 1461< / span >   }< / div >
< div class = "line" > < a name = "l01462" > < / a > < span class = "lineno" > 1462< / span >   d0 = d1;< / div >
< div class = "line" > < a name = "l01463" > < / a > < span class = "lineno" > 1463< / span >   }< / div >
< div class = "line" > < a name = "l01464" > < / a > < span class = "lineno" > 1464< / span >   }< / div >
< div class = "line" > < a name = "l01465" > < / a > < span class = "lineno" > 1465< / span >   < / div >
< div class = "line" > < a name = "l01466" > < / a > < span class = "lineno" > 1466< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l01467" > < / a > < span class = "lineno" > 1467< / span >   storage_idx_t ji = hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > [j];< / div >
< div class = "line" > < a name = "l01468" > < / a > < span class = "lineno" > 1468< / span >   < span class = "keywordflow" > if< / span > (ji < 0) ji = i;< / div >
< div class = "line" > < a name = "l01469" > < / a > < span class = "lineno" > 1469< / span >   < / div >
< div class = "line" > < a name = "l01470" > < / a > < span class = "lineno" > 1470< / span >   index.storage-> reconstruct(ji, tmp);< / div >
< div class = "line" > < a name = "l01471" > < / a > < span class = "lineno" > 1471< / span >   < span class = "keywordtype" > int< / span > d0 = 0;< / div >
< div class = "line" > < a name = "l01472" > < / a > < span class = "lineno" > 1472< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > sq = 0; sq < nsq; sq++) {< / div >
< div class = "line" > < a name = "l01473" > < / a > < span class = "lineno" > 1473< / span >   < span class = "keywordtype" > float< / span > w = *(betas[sq]++);< / div >
< div class = "line" > < a name = "l01474" > < / a > < span class = "lineno" > 1474< / span >   < span class = "keywordtype" > int< / span > d1 = d0 + dsub;< / div >
< div class = "line" > < a name = "l01475" > < / a > < span class = "lineno" > 1475< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > l = d0; l < d1; l++) {< / div >
< div class = "line" > < a name = "l01476" > < / a > < span class = "lineno" > 1476< / span >   x[l] += w * tmp[l];< / div >
< div class = "line" > < a name = "l01477" > < / a > < span class = "lineno" > 1477< / span >   }< / div >
< div class = "line" > < a name = "l01478" > < / a > < span class = "lineno" > 1478< / span >   d0 = d1;< / div >
< div class = "line" > < a name = "l01479" > < / a > < span class = "lineno" > 1479< / span >   }< / div >
< div class = "line" > < a name = "l01480" > < / a > < span class = "lineno" > 1480< / span >   }< / div >
< div class = "line" > < a name = "l01481" > < / a > < span class = "lineno" > 1481< / span >   }< / div >
< div class = "line" > < a name = "l01482" > < / a > < span class = "lineno" > 1482< / span >   }< / div >
< div class = "line" > < a name = "l01483" > < / a > < span class = "lineno" > 1483< / span >   < / div >
< div class = "line" > < a name = "l01484" > < / a > < span class = "lineno" > 1484< / span >   < span class = "keywordtype" > void< / span > ReconstructFromNeighbors::reconstruct_n(storage_idx_t n0,< / div >
< div class = "line" > < a name = "l01485" > < / a > < span class = "lineno" > 1485< / span >   storage_idx_t ni,< / div >
< div class = "line" > < a name = "l01486" > < / a > < span class = "lineno" > 1486< / span >   < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01487" > < / a > < span class = "lineno" > 1487< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01488" > < / a > < span class = "lineno" > 1488< / span >   < span class = "preprocessor" > #pragma omp parallel< / span > < / div >
< div class = "line" > < a name = "l01489" > < / a > < span class = "lineno" > 1489< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l01490" > < / a > < span class = "lineno" > 1490< / span >   std::vector< float> tmp(index.d);< / div >
< div class = "line" > < a name = "l01491" > < / a > < span class = "lineno" > 1491< / span >   < span class = "preprocessor" > #pragma omp for< / span > < / div >
< div class = "line" > < a name = "l01492" > < / a > < span class = "lineno" > 1492< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (storage_idx_t i = 0; i < ni; i++) {< / div >
< div class = "line" > < a name = "l01493" > < / a > < span class = "lineno" > 1493< / span >   < a class = "code" href = "structfaiss_1_1ReconstructFromNeighbors.html#a6cf260c530e273e4d676804ac71128f8" > reconstruct< / a > (n0 + i, x + i * index.d, tmp.data());< / div >
< div class = "line" > < a name = "l01494" > < / a > < span class = "lineno" > 1494< / span >   }< / div >
< div class = "line" > < a name = "l01495" > < / a > < span class = "lineno" > 1495< / span >   }< / div >
< div class = "line" > < a name = "l01496" > < / a > < span class = "lineno" > 1496< / span >   }< / div >
< div class = "line" > < a name = "l01497" > < / a > < span class = "lineno" > 1497< / span >   < / div >
< div class = "line" > < a name = "l01498" > < / a > < span class = "lineno" > 1498< / span >   < span class = "keywordtype" > size_t< / span > ReconstructFromNeighbors::compute_distances(< span class = "keywordtype" > size_t< / span > n, < span class = "keyword" > const< / span > idx_t *shortlist,< / div >
< div class = "line" > < a name = "l01499" > < / a > < span class = "lineno" > 1499< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *query, < span class = "keywordtype" > float< / span > *distances)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01500" > < / a > < span class = "lineno" > 1500< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01501" > < / a > < span class = "lineno" > 1501< / span >   std::vector< float> tmp(2 * index.d);< / div >
< div class = "line" > < a name = "l01502" > < / a > < span class = "lineno" > 1502< / span >   < span class = "keywordtype" > size_t< / span > ncomp = 0;< / div >
< div class = "line" > < a name = "l01503" > < / a > < span class = "lineno" > 1503< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l01504" > < / a > < span class = "lineno" > 1504< / span >   < span class = "keywordflow" > if< / span > (shortlist[i] < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l01505" > < / a > < span class = "lineno" > 1505< / span >   < a class = "code" href = "structfaiss_1_1ReconstructFromNeighbors.html#a6cf260c530e273e4d676804ac71128f8" > reconstruct< / a > (shortlist[i], tmp.data(), tmp.data() + index.d);< / div >
< div class = "line" > < a name = "l01506" > < / a > < span class = "lineno" > 1506< / span >   distances[i] = < a class = "code" href = "namespacefaiss.html#a7466bd32de31640860393a701eaac5ad" > fvec_L2sqr< / a > (query, tmp.data(), index.d);< / div >
< div class = "line" > < a name = "l01507" > < / a > < span class = "lineno" > 1507< / span >   ncomp++;< / div >
< div class = "line" > < a name = "l01508" > < / a > < span class = "lineno" > 1508< / span >   }< / div >
< div class = "line" > < a name = "l01509" > < / a > < span class = "lineno" > 1509< / span >   < span class = "keywordflow" > return< / span > ncomp;< / div >
< div class = "line" > < a name = "l01510" > < / a > < span class = "lineno" > 1510< / span >   }< / div >
< div class = "line" > < a name = "l01511" > < / a > < span class = "lineno" > 1511< / span >   < / div >
< div class = "line" > < a name = "l01512" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1ReconstructFromNeighbors.html#aed256bdd9f48dc93cb9e33cfdfd5bde7" > 1512< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1ReconstructFromNeighbors.html#aed256bdd9f48dc93cb9e33cfdfd5bde7" > ReconstructFromNeighbors::get_neighbor_table< / a > (storage_idx_t i, < span class = "keywordtype" > float< / span > *tmp1)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01513" > < / a > < span class = "lineno" > 1513< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01514" > < / a > < span class = "lineno" > 1514< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1HNSW.html" > HNSW< / a > & hnsw = index.hnsw;< / div >
< div class = "line" > < a name = "l01515" > < / a > < span class = "lineno" > 1515< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l01516" > < / a > < span class = "lineno" > 1516< / span >   hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#aa3ae6a80d358e59e3af23f918253f61d" > neighbor_range< / a > (i, 0, & begin, & end);< / div >
< div class = "line" > < a name = "l01517" > < / a > < span class = "lineno" > 1517< / span >   < span class = "keywordtype" > size_t< / span > d = index.d;< / div >
< div class = "line" > < a name = "l01518" > < / a > < span class = "lineno" > 1518< / span >   < / div >
< div class = "line" > < a name = "l01519" > < / a > < span class = "lineno" > 1519< / span >   index.storage-> reconstruct(i, tmp1);< / div >
< div class = "line" > < a name = "l01520" > < / a > < span class = "lineno" > 1520< / span >   < / div >
< div class = "line" > < a name = "l01521" > < / a > < span class = "lineno" > 1521< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l01522" > < / a > < span class = "lineno" > 1522< / span >   storage_idx_t ji = hnsw.< a class = "code" href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > neighbors< / a > [j];< / div >
< div class = "line" > < a name = "l01523" > < / a > < span class = "lineno" > 1523< / span >   < span class = "keywordflow" > if< / span > (ji < 0) ji = i;< / div >
< div class = "line" > < a name = "l01524" > < / a > < span class = "lineno" > 1524< / span >   index.storage-> reconstruct(ji, tmp1 + (j - begin + 1) * d);< / div >
< div class = "line" > < a name = "l01525" > < / a > < span class = "lineno" > 1525< / span >   }< / div >
< div class = "line" > < a name = "l01526" > < / a > < span class = "lineno" > 1526< / span >   < / div >
< div class = "line" > < a name = "l01527" > < / a > < span class = "lineno" > 1527< / span >   }< / div >
< div class = "line" > < a name = "l01528" > < / a > < span class = "lineno" > 1528< / span >   < / div >
< div class = "line" > < a name = "l01529" > < / a > < span class = "lineno" > 1529< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l01530" > < / a > < span class = "lineno" > 1530< / span >   < span class = "comment" > /// called by add_codes< / span > < / div >
< div class = "line" > < a name = "l01531" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1ReconstructFromNeighbors.html#a88ca99742dccc52ebb3324b507b6c872" > 1531< / a > < / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1ReconstructFromNeighbors.html#a88ca99742dccc52ebb3324b507b6c872" > ReconstructFromNeighbors::estimate_code< / a > (< / div >
< div class = "line" > < a name = "l01532" > < / a > < span class = "lineno" > 1532< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x, storage_idx_t i, uint8_t *code)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01533" > < / a > < span class = "lineno" > 1533< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01534" > < / a > < span class = "lineno" > 1534< / span >   < / div >
< div class = "line" > < a name = "l01535" > < / a > < span class = "lineno" > 1535< / span >   < span class = "comment" > // fill in tmp table with the neighbor values< / span > < / div >
< div class = "line" > < a name = "l01536" > < / a > < span class = "lineno" > 1536< / span >   < span class = "keywordtype" > float< / span > *tmp1 = < span class = "keyword" > new< / span > < span class = "keywordtype" > float< / span > [d * (M + 1) + (d * k)];< / div >
< div class = "line" > < a name = "l01537" > < / a > < span class = "lineno" > 1537< / span >   < span class = "keywordtype" > float< / span > *tmp2 = tmp1 + d * (M + 1);< / div >
< div class = "line" > < a name = "l01538" > < / a > < span class = "lineno" > 1538< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del(tmp1);< / div >
< div class = "line" > < a name = "l01539" > < / a > < span class = "lineno" > 1539< / span >   < / div >
< div class = "line" > < a name = "l01540" > < / a > < span class = "lineno" > 1540< / span >   < span class = "comment" > // collect coordinates of base< / span > < / div >
< div class = "line" > < a name = "l01541" > < / a > < span class = "lineno" > 1541< / span >   < a class = "code" href = "structfaiss_1_1ReconstructFromNeighbors.html#aed256bdd9f48dc93cb9e33cfdfd5bde7" > get_neighbor_table< / a > (i, tmp1);< / div >
< div class = "line" > < a name = "l01542" > < / a > < span class = "lineno" > 1542< / span >   < / div >
< div class = "line" > < a name = "l01543" > < / a > < span class = "lineno" > 1543< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > sq = 0; sq < nsq; sq++) {< / div >
< div class = "line" > < a name = "l01544" > < / a > < span class = "lineno" > 1544< / span >   < span class = "keywordtype" > int< / span > d0 = sq * dsub;< / div >
< div class = "line" > < a name = "l01545" > < / a > < span class = "lineno" > 1545< / span >   < span class = "keywordtype" > int< / span > d1 = d0 + dsub;< / div >
< div class = "line" > < a name = "l01546" > < / a > < span class = "lineno" > 1546< / span >   < / div >
< div class = "line" > < a name = "l01547" > < / a > < span class = "lineno" > 1547< / span >   {< / div >
< div class = "line" > < a name = "l01548" > < / a > < span class = "lineno" > 1548< / span >   FINTEGER ki = k, di = d, m1 = M + 1;< / div >
< div class = "line" > < a name = "l01549" > < / a > < span class = "lineno" > 1549< / span >   FINTEGER dsubi = dsub;< / div >
< div class = "line" > < a name = "l01550" > < / a > < span class = "lineno" > 1550< / span >   < span class = "keywordtype" > float< / span > zero = 0, one = 1;< / div >
< div class = "line" > < a name = "l01551" > < / a > < span class = "lineno" > 1551< / span >   < / div >
< div class = "line" > < a name = "l01552" > < / a > < span class = "lineno" > 1552< / span >   sgemm_ (< span class = "stringliteral" > " N" < / span > , < span class = "stringliteral" > " N" < / span > , & dsubi, & ki, & m1, & one,< / div >
< div class = "line" > < a name = "l01553" > < / a > < span class = "lineno" > 1553< / span >   tmp1 + d0, & di,< / div >
< div class = "line" > < a name = "l01554" > < / a > < span class = "lineno" > 1554< / span >   codebook.data() + sq * (m1 * k), & m1,< / div >
< div class = "line" > < a name = "l01555" > < / a > < span class = "lineno" > 1555< / span >   & zero, tmp2, & dsubi);< / div >
< div class = "line" > < a name = "l01556" > < / a > < span class = "lineno" > 1556< / span >   }< / div >
< div class = "line" > < a name = "l01557" > < / a > < span class = "lineno" > 1557< / span >   < / div >
< div class = "line" > < a name = "l01558" > < / a > < span class = "lineno" > 1558< / span >   < span class = "keywordtype" > float< / span > min = HUGE_VAL;< / div >
< div class = "line" > < a name = "l01559" > < / a > < span class = "lineno" > 1559< / span >   < span class = "keywordtype" > int< / span > argmin = -1;< / div >
< div class = "line" > < a name = "l01560" > < / a > < span class = "lineno" > 1560< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < k; j++) {< / div >
< div class = "line" > < a name = "l01561" > < / a > < span class = "lineno" > 1561< / span >   < span class = "keywordtype" > float< / span > dis = < a class = "code" href = "namespacefaiss.html#a7466bd32de31640860393a701eaac5ad" > fvec_L2sqr< / a > (x + d0, tmp2 + j * dsub, dsub);< / div >
< div class = "line" > < a name = "l01562" > < / a > < span class = "lineno" > 1562< / span >   < span class = "keywordflow" > if< / span > (dis < min) {< / div >
< div class = "line" > < a name = "l01563" > < / a > < span class = "lineno" > 1563< / span >   min = dis;< / div >
< div class = "line" > < a name = "l01564" > < / a > < span class = "lineno" > 1564< / span >   argmin = j;< / div >
< div class = "line" > < a name = "l01565" > < / a > < span class = "lineno" > 1565< / span >   }< / div >
< div class = "line" > < a name = "l01566" > < / a > < span class = "lineno" > 1566< / span >   }< / div >
< div class = "line" > < a name = "l01567" > < / a > < span class = "lineno" > 1567< / span >   code[sq] = argmin;< / div >
< div class = "line" > < a name = "l01568" > < / a > < span class = "lineno" > 1568< / span >   }< / div >
< div class = "line" > < a name = "l01569" > < / a > < span class = "lineno" > 1569< / span >   < / div >
< div class = "line" > < a name = "l01570" > < / a > < span class = "lineno" > 1570< / span >   }< / div >
< div class = "line" > < a name = "l01571" > < / a > < span class = "lineno" > 1571< / span >   < / div >
< div class = "line" > < a name = "l01572" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1ReconstructFromNeighbors.html#a454b7a5f7437a257df7404f5778fc833" > 1572< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1ReconstructFromNeighbors.html#a454b7a5f7437a257df7404f5778fc833" > ReconstructFromNeighbors::add_codes< / a > (< span class = "keywordtype" > size_t< / span > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< / div >
< div class = "line" > < a name = "l01573" > < / a > < span class = "lineno" > 1573< / span >   {< / div >
< div class = "line" > < a name = "l01574" > < / a > < span class = "lineno" > 1574< / span >   < span class = "keywordflow" > if< / span > (k == 1) { < span class = "comment" > // nothing to encode< / span > < / div >
< div class = "line" > < a name = "l01575" > < / a > < span class = "lineno" > 1575< / span >   ntotal += n;< / div >
< div class = "line" > < a name = "l01576" > < / a > < span class = "lineno" > 1576< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l01577" > < / a > < span class = "lineno" > 1577< / span >   }< / div >
< div class = "line" > < a name = "l01578" > < / a > < span class = "lineno" > 1578< / span >   codes.resize(codes.size() + code_size * n);< / div >
< div class = "line" > < a name = "l01579" > < / a > < span class = "lineno" > 1579< / span >   < span class = "preprocessor" > #pragma omp parallel for< / span > < / div >
< div class = "line" > < a name = "l01580" > < / a > < span class = "lineno" > 1580< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l01581" > < / a > < span class = "lineno" > 1581< / span >   < a class = "code" href = "structfaiss_1_1ReconstructFromNeighbors.html#a88ca99742dccc52ebb3324b507b6c872" > estimate_code< / a > (x + i * index.d, ntotal + i,< / div >
< div class = "line" > < a name = "l01582" > < / a > < span class = "lineno" > 1582< / span >   codes.data() + (ntotal + i) * code_size);< / div >
< div class = "line" > < a name = "l01583" > < / a > < span class = "lineno" > 1583< / span >   }< / div >
< div class = "line" > < a name = "l01584" > < / a > < span class = "lineno" > 1584< / span >   ntotal += n;< / div >
< div class = "line" > < a name = "l01585" > < / a > < span class = "lineno" > 1585< / span >   FAISS_ASSERT (codes.size() == ntotal * code_size);< / div >
< div class = "line" > < a name = "l01586" > < / a > < span class = "lineno" > 1586< / span >   }< / div >
< div class = "line" > < a name = "l01587" > < / a > < span class = "lineno" > 1587< / span >   < / div >
< div class = "line" > < a name = "l01588" > < / a > < span class = "lineno" > 1588< / span >   < / div >
< div class = "line" > < a name = "l01589" > < / a > < span class = "lineno" > 1589< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l01590" > < / a > < span class = "lineno" > 1590< / span >   < span class = "comment" > * IndexHNSWFlat implementation< / span > < / div >
< div class = "line" > < a name = "l01591" > < / a > < span class = "lineno" > 1591< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l01592" > < / a > < span class = "lineno" > 1592< / span >   < / div >
< div class = "line" > < a name = "l01593" > < / a > < span class = "lineno" > 1593< / span >   < / div >
< div class = "line" > < a name = "l01594" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1FlatL2Dis.html" > 1594< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1FlatL2Dis.html" > FlatL2Dis< / a > : < a class = "code" href = "structfaiss_1_1HNSW_1_1DistanceComputer.html" > HNSW::DistanceComputer< / a > {< / div >
< div class = "line" > < a name = "l01595" > < / a > < span class = "lineno" > 1595< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > Index::idx_t< / a > nb;< / div >
< div class = "line" > < a name = "l01596" > < / a > < span class = "lineno" > 1596< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *q;< / div >
< div class = "line" > < a name = "l01597" > < / a > < span class = "lineno" > 1597< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *b;< / div >
< div class = "line" > < a name = "l01598" > < / a > < span class = "lineno" > 1598< / span >   < span class = "keywordtype" > size_t< / span > ndis;< / div >
< div class = "line" > < a name = "l01599" > < / a > < span class = "lineno" > 1599< / span >   < / div >
< div class = "line" > < a name = "l01600" > < / a > < span class = "lineno" > 1600< / span >   < span class = "keywordtype" > float< / span > operator () (storage_idx_t i)< span class = "keyword" > override< / span > < / div >
< div class = "line" > < a name = "l01601" > < / a > < span class = "lineno" > 1601< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01602" > < / a > < span class = "lineno" > 1602< / span >   ndis++;< / div >
< div class = "line" > < a name = "l01603" > < / a > < span class = "lineno" > 1603< / span >   < span class = "keywordflow" > return< / span > (< a class = "code" href = "namespacefaiss.html#a7466bd32de31640860393a701eaac5ad" > fvec_L2sqr< / a > (q, b + i * d, d));< / div >
< div class = "line" > < a name = "l01604" > < / a > < span class = "lineno" > 1604< / span >   }< / div >
< div class = "line" > < a name = "l01605" > < / a > < span class = "lineno" > 1605< / span >   < / div >
< div class = "line" > < a name = "l01606" > < / a > < span class = "lineno" > 1606< / span >   < span class = "keywordtype" > float< / span > symmetric_dis(storage_idx_t i, storage_idx_t j)< span class = "keyword" > override< / span > < / div >
< div class = "line" > < a name = "l01607" > < / a > < span class = "lineno" > 1607< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01608" > < / a > < span class = "lineno" > 1608< / span >   < span class = "keywordflow" > return< / span > (< a class = "code" href = "namespacefaiss.html#a7466bd32de31640860393a701eaac5ad" > fvec_L2sqr< / a > (b + j * d, b + i * d, d));< / div >
< div class = "line" > < a name = "l01609" > < / a > < span class = "lineno" > 1609< / span >   }< / div >
< div class = "line" > < a name = "l01610" > < / a > < span class = "lineno" > 1610< / span >   < / div >
< div class = "line" > < a name = "l01611" > < / a > < span class = "lineno" > 1611< / span >   < / div >
< div class = "line" > < a name = "l01612" > < / a > < span class = "lineno" > 1612< / span >   < a class = "code" href = "structfaiss_1_1FlatL2Dis.html" > FlatL2Dis< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1IndexFlatL2.html" > IndexFlatL2< / a > & storage, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *q = < span class = "keyword" > nullptr< / span > ):< / div >
< div class = "line" > < a name = "l01613" > < / a > < span class = "lineno" > 1613< / span >   q(q)< / div >
< div class = "line" > < a name = "l01614" > < / a > < span class = "lineno" > 1614< / span >   {< / div >
< div class = "line" > < a name = "l01615" > < / a > < span class = "lineno" > 1615< / span >   nb = storage.< a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l01616" > < / a > < span class = "lineno" > 1616< / span >   d = storage.< a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > ;< / div >
< div class = "line" > < a name = "l01617" > < / a > < span class = "lineno" > 1617< / span >   b = storage.< a class = "code" href = "structfaiss_1_1IndexFlat.html#a9001de47890fe5d2eced9551d3613d47" > xb< / a > .data();< / div >
< div class = "line" > < a name = "l01618" > < / a > < span class = "lineno" > 1618< / span >   ndis = 0;< / div >
< div class = "line" > < a name = "l01619" > < / a > < span class = "lineno" > 1619< / span >   }< / div >
< div class = "line" > < a name = "l01620" > < / a > < span class = "lineno" > 1620< / span >   < / div >
< div class = "line" > < a name = "l01621" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1FlatL2Dis.html#a9982374debdda67f3db647ffc0d3fc4b" > 1621< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1FlatL2Dis.html#a9982374debdda67f3db647ffc0d3fc4b" > set_query< / a > (< span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > override < / span > {< / div >
< div class = "line" > < a name = "l01622" > < / a > < span class = "lineno" > 1622< / span >   q = x;< / div >
< div class = "line" > < a name = "l01623" > < / a > < span class = "lineno" > 1623< / span >   }< / div >
< div class = "line" > < a name = "l01624" > < / a > < span class = "lineno" > 1624< / span >   < / div >
< div class = "line" > < a name = "l01625" > < / a > < span class = "lineno" > 1625< / span >   < span class = "keyword" > virtual< / span > ~< a class = "code" href = "structfaiss_1_1FlatL2Dis.html" > FlatL2Dis< / a > () {< / div >
< div class = "line" > < a name = "l01626" > < / a > < span class = "lineno" > 1626< / span >   < span class = "preprocessor" > #pragma omp critical< / span > < / div >
< div class = "line" > < a name = "l01627" > < / a > < span class = "lineno" > 1627< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l01628" > < / a > < span class = "lineno" > 1628< / span >   hnsw_stats.ndis += ndis;< / div >
< div class = "line" > < a name = "l01629" > < / a > < span class = "lineno" > 1629< / span >   }< / div >
< div class = "line" > < a name = "l01630" > < / a > < span class = "lineno" > 1630< / span >   }< / div >
< div class = "line" > < a name = "l01631" > < / a > < span class = "lineno" > 1631< / span >   };< / div >
< div class = "line" > < a name = "l01632" > < / a > < span class = "lineno" > 1632< / span >   < / div >
< div class = "line" > < a name = "l01633" > < / a > < span class = "lineno" > 1633< / span >   < / div >
< div class = "line" > < a name = "l01634" > < / a > < span class = "lineno" > 1634< / span >   IndexHNSWFlat::IndexHNSWFlat()< / div >
< div class = "line" > < a name = "l01635" > < / a > < span class = "lineno" > 1635< / span >   {< / div >
< div class = "line" > < a name = "l01636" > < / a > < span class = "lineno" > 1636< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l01637" > < / a > < span class = "lineno" > 1637< / span >   }< / div >
< div class = "line" > < a name = "l01638" > < / a > < span class = "lineno" > 1638< / span >   < / div >
< div class = "line" > < a name = "l01639" > < / a > < span class = "lineno" > 1639< / span >   < / div >
< div class = "line" > < a name = "l01640" > < / a > < span class = "lineno" > 1640< / span >   IndexHNSWFlat::IndexHNSWFlat(< span class = "keywordtype" > int< / span > d, < span class = "keywordtype" > int< / span > M):< / div >
< div class = "line" > < a name = "l01641" > < / a > < span class = "lineno" > 1641< / span >   IndexHNSW(new IndexFlatL2(d), M)< / div >
< div class = "line" > < a name = "l01642" > < / a > < span class = "lineno" > 1642< / span >   {< / div >
< div class = "line" > < a name = "l01643" > < / a > < span class = "lineno" > 1643< / span >   own_fields = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l01644" > < / a > < span class = "lineno" > 1644< / span >   is_trained = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l01645" > < / a > < span class = "lineno" > 1645< / span >   }< / div >
< div class = "line" > < a name = "l01646" > < / a > < span class = "lineno" > 1646< / span >   < / div >
< div class = "line" > < a name = "l01647" > < / a > < span class = "lineno" > 1647< / span >   < / div >
< div class = "line" > < a name = "l01648" > < / a > < span class = "lineno" > 1648< / span >   HNSW::DistanceComputer * IndexHNSWFlat::get_distance_computer ()< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01649" > < / a > < span class = "lineno" > 1649< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01650" > < / a > < span class = "lineno" > 1650< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > new< / span > FlatL2Dis (*dynamic_cast< IndexFlatL2*> (storage));< / div >
< div class = "line" > < a name = "l01651" > < / a > < span class = "lineno" > 1651< / span >   }< / div >
< div class = "line" > < a name = "l01652" > < / a > < span class = "lineno" > 1652< / span >   < / div >
< div class = "line" > < a name = "l01653" > < / a > < span class = "lineno" > 1653< / span >   < / div >
< div class = "line" > < a name = "l01654" > < / a > < span class = "lineno" > 1654< / span >   < / div >
< div class = "line" > < a name = "l01655" > < / a > < span class = "lineno" > 1655< / span >   < / div >
< div class = "line" > < a name = "l01656" > < / a > < span class = "lineno" > 1656< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l01657" > < / a > < span class = "lineno" > 1657< / span >   < span class = "comment" > * IndexHNSWPQ implementation< / span > < / div >
< div class = "line" > < a name = "l01658" > < / a > < span class = "lineno" > 1658< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l01659" > < / a > < span class = "lineno" > 1659< / span >   < / div >
< div class = "line" > < a name = "l01660" > < / a > < span class = "lineno" > 1660< / span >   < / div >
< div class = "line" > < a name = "l01661" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1PQDis.html" > 1661< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1PQDis.html" > PQDis< / a > : < a class = "code" href = "structfaiss_1_1HNSW_1_1DistanceComputer.html" > HNSW::DistanceComputer< / a > {< / div >
< div class = "line" > < a name = "l01662" > < / a > < span class = "lineno" > 1662< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > Index::idx_t< / a > nb;< / div >
< div class = "line" > < a name = "l01663" > < / a > < span class = "lineno" > 1663< / span >   < span class = "keyword" > const< / span > uint8_t *codes;< / div >
< div class = "line" > < a name = "l01664" > < / a > < span class = "lineno" > 1664< / span >   < span class = "keywordtype" > size_t< / span > code_size;< / div >
< div class = "line" > < a name = "l01665" > < / a > < span class = "lineno" > 1665< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1ProductQuantizer.html" > ProductQuantizer< / a > & pq;< / div >
< div class = "line" > < a name = "l01666" > < / a > < span class = "lineno" > 1666< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *sdc;< / div >
< div class = "line" > < a name = "l01667" > < / a > < span class = "lineno" > 1667< / span >   std::vector< float> precomputed_table;< / div >
< div class = "line" > < a name = "l01668" > < / a > < span class = "lineno" > 1668< / span >   < span class = "keywordtype" > size_t< / span > ndis;< / div >
< div class = "line" > < a name = "l01669" > < / a > < span class = "lineno" > 1669< / span >   < / div >
< div class = "line" > < a name = "l01670" > < / a > < span class = "lineno" > 1670< / span >   < span class = "keywordtype" > float< / span > operator () (storage_idx_t i)< span class = "keyword" > override< / span > < / div >
< div class = "line" > < a name = "l01671" > < / a > < span class = "lineno" > 1671< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01672" > < / a > < span class = "lineno" > 1672< / span >   < span class = "keyword" > const< / span > uint8_t *code = codes + i * code_size;< / div >
< div class = "line" > < a name = "l01673" > < / a > < span class = "lineno" > 1673< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *dt = precomputed_table.data();< / div >
< div class = "line" > < a name = "l01674" > < / a > < span class = "lineno" > 1674< / span >   < span class = "keywordtype" > float< / span > accu = 0;< / div >
< div class = "line" > < a name = "l01675" > < / a > < span class = "lineno" > 1675< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > ; j++) {< / div >
< div class = "line" > < a name = "l01676" > < / a > < span class = "lineno" > 1676< / span >   accu += dt[*code++];< / div >
< div class = "line" > < a name = "l01677" > < / a > < span class = "lineno" > 1677< / span >   dt += 256;< / div >
< div class = "line" > < a name = "l01678" > < / a > < span class = "lineno" > 1678< / span >   }< / div >
< div class = "line" > < a name = "l01679" > < / a > < span class = "lineno" > 1679< / span >   ndis++;< / div >
< div class = "line" > < a name = "l01680" > < / a > < span class = "lineno" > 1680< / span >   < span class = "keywordflow" > return< / span > accu;< / div >
< div class = "line" > < a name = "l01681" > < / a > < span class = "lineno" > 1681< / span >   }< / div >
< div class = "line" > < a name = "l01682" > < / a > < span class = "lineno" > 1682< / span >   < / div >
< div class = "line" > < a name = "l01683" > < / a > < span class = "lineno" > 1683< / span >   < span class = "keywordtype" > float< / span > symmetric_dis(storage_idx_t i, storage_idx_t j)< span class = "keyword" > override< / span > < / div >
< div class = "line" > < a name = "l01684" > < / a > < span class = "lineno" > 1684< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01685" > < / a > < span class = "lineno" > 1685< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * sdci = sdc;< / div >
< div class = "line" > < a name = "l01686" > < / a > < span class = "lineno" > 1686< / span >   < span class = "keywordtype" > float< / span > accu = 0;< / div >
< div class = "line" > < a name = "l01687" > < / a > < span class = "lineno" > 1687< / span >   < span class = "keyword" > const< / span > uint8_t *codei = codes + i * code_size;< / div >
< div class = "line" > < a name = "l01688" > < / a > < span class = "lineno" > 1688< / span >   < span class = "keyword" > const< / span > uint8_t *codej = codes + j * code_size;< / div >
< div class = "line" > < a name = "l01689" > < / a > < span class = "lineno" > 1689< / span >   < / div >
< div class = "line" > < a name = "l01690" > < / a > < span class = "lineno" > 1690< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > l = 0; l < pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > ; l++) {< / div >
< div class = "line" > < a name = "l01691" > < / a > < span class = "lineno" > 1691< / span >   accu += sdci[(*codei++) + (*codej++) * 256];< / div >
< div class = "line" > < a name = "l01692" > < / a > < span class = "lineno" > 1692< / span >   sdci += 256 * 256;< / div >
< div class = "line" > < a name = "l01693" > < / a > < span class = "lineno" > 1693< / span >   }< / div >
< div class = "line" > < a name = "l01694" > < / a > < span class = "lineno" > 1694< / span >   < span class = "keywordflow" > return< / span > accu;< / div >
< div class = "line" > < a name = "l01695" > < / a > < span class = "lineno" > 1695< / span >   }< / div >
< div class = "line" > < a name = "l01696" > < / a > < span class = "lineno" > 1696< / span >   < / div >
< div class = "line" > < a name = "l01697" > < / a > < span class = "lineno" > 1697< / span >   < / div >
< div class = "line" > < a name = "l01698" > < / a > < span class = "lineno" > 1698< / span >   < a class = "code" href = "structfaiss_1_1PQDis.html" > PQDis< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1IndexPQ.html" > IndexPQ< / a > & storage, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *q = < span class = "keyword" > nullptr< / span > ):< / div >
< div class = "line" > < a name = "l01699" > < / a > < span class = "lineno" > 1699< / span >   pq(storage.< a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > )< / div >
< div class = "line" > < a name = "l01700" > < / a > < span class = "lineno" > 1700< / span >   {< / div >
< div class = "line" > < a name = "l01701" > < / a > < span class = "lineno" > 1701< / span >   precomputed_table.resize(pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > * pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > );< / div >
< div class = "line" > < a name = "l01702" > < / a > < span class = "lineno" > 1702< / span >   nb = storage.< a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l01703" > < / a > < span class = "lineno" > 1703< / span >   d = storage.< a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > ;< / div >
< div class = "line" > < a name = "l01704" > < / a > < span class = "lineno" > 1704< / span >   codes = storage.< a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > .data();< / div >
< div class = "line" > < a name = "l01705" > < / a > < span class = "lineno" > 1705< / span >   code_size = pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ;< / div >
< div class = "line" > < a name = "l01706" > < / a > < span class = "lineno" > 1706< / span >   FAISS_ASSERT(pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > == 256);< / div >
< div class = "line" > < a name = "l01707" > < / a > < span class = "lineno" > 1707< / span >   FAISS_ASSERT(pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a6bd65fb4407452f73acb7242931d09e4" > sdc_table< / a > .size() == pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > * pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > * pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > );< / div >
< div class = "line" > < a name = "l01708" > < / a > < span class = "lineno" > 1708< / span >   sdc = pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a6bd65fb4407452f73acb7242931d09e4" > sdc_table< / a > .data();< / div >
< div class = "line" > < a name = "l01709" > < / a > < span class = "lineno" > 1709< / span >   ndis = 0;< / div >
< div class = "line" > < a name = "l01710" > < / a > < span class = "lineno" > 1710< / span >   }< / div >
< div class = "line" > < a name = "l01711" > < / a > < span class = "lineno" > 1711< / span >   < / div >
< div class = "line" > < a name = "l01712" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1PQDis.html#a3f19b9d5375526901e16f88a9b310e03" > 1712< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1PQDis.html#a3f19b9d5375526901e16f88a9b310e03" > set_query< / a > (< span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > override < / span > {< / div >
< div class = "line" > < a name = "l01713" > < / a > < span class = "lineno" > 1713< / span >   pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a36361f41bcd2fa698f3c39eb7111ed09" > compute_distance_table< / a > (x, precomputed_table.data());< / div >
< div class = "line" > < a name = "l01714" > < / a > < span class = "lineno" > 1714< / span >   }< / div >
< div class = "line" > < a name = "l01715" > < / a > < span class = "lineno" > 1715< / span >   < / div >
< div class = "line" > < a name = "l01716" > < / a > < span class = "lineno" > 1716< / span >   < span class = "keyword" > virtual< / span > ~< a class = "code" href = "structfaiss_1_1PQDis.html" > PQDis< / a > () {< / div >
< div class = "line" > < a name = "l01717" > < / a > < span class = "lineno" > 1717< / span >   < span class = "preprocessor" > #pragma omp critical< / span > < / div >
< div class = "line" > < a name = "l01718" > < / a > < span class = "lineno" > 1718< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l01719" > < / a > < span class = "lineno" > 1719< / span >   hnsw_stats.ndis += ndis;< / div >
< div class = "line" > < a name = "l01720" > < / a > < span class = "lineno" > 1720< / span >   }< / div >
< div class = "line" > < a name = "l01721" > < / a > < span class = "lineno" > 1721< / span >   }< / div >
< div class = "line" > < a name = "l01722" > < / a > < span class = "lineno" > 1722< / span >   };< / div >
< div class = "line" > < a name = "l01723" > < / a > < span class = "lineno" > 1723< / span >   < / div >
< div class = "line" > < a name = "l01724" > < / a > < span class = "lineno" > 1724< / span >   IndexHNSWPQ::IndexHNSWPQ() {}< / div >
< div class = "line" > < a name = "l01725" > < / a > < span class = "lineno" > 1725< / span >   < / div >
< div class = "line" > < a name = "l01726" > < / a > < span class = "lineno" > 1726< / span >   IndexHNSWPQ::IndexHNSWPQ(< span class = "keywordtype" > int< / span > d, < span class = "keywordtype" > int< / span > pq_m, < span class = "keywordtype" > int< / span > M):< / div >
< div class = "line" > < a name = "l01727" > < / a > < span class = "lineno" > 1727< / span >   IndexHNSW(new IndexPQ(d, pq_m, 8), M)< / div >
< div class = "line" > < a name = "l01728" > < / a > < span class = "lineno" > 1728< / span >   {< / div >
< div class = "line" > < a name = "l01729" > < / a > < span class = "lineno" > 1729< / span >   own_fields = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l01730" > < / a > < span class = "lineno" > 1730< / span >   is_trained = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l01731" > < / a > < span class = "lineno" > 1731< / span >   }< / div >
< div class = "line" > < a name = "l01732" > < / a > < span class = "lineno" > 1732< / span >   < / div >
< div class = "line" > < a name = "l01733" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexHNSWPQ.html#ae99b976eeb25717d10055b1786aa011c" > 1733< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexHNSWPQ.html#ae99b976eeb25717d10055b1786aa011c" > IndexHNSWPQ::train< / a > (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * x)< / div >
< div class = "line" > < a name = "l01734" > < / a > < span class = "lineno" > 1734< / span >   {< / div >
< div class = "line" > < a name = "l01735" > < / a > < span class = "lineno" > 1735< / span >   < a class = "code" href = "structfaiss_1_1IndexHNSW.html#a40bc6d2c67545f95e322c63d68a47140" > IndexHNSW::train< / a > (n, x);< / div >
< div class = "line" > < a name = "l01736" > < / a > < span class = "lineno" > 1736< / span >   (< span class = "keyword" > dynamic_cast< < / span > < a class = "code" href = "structfaiss_1_1IndexPQ.html" > IndexPQ< / a > *< span class = "keyword" > > < / span > (storage))-> pq.compute_sdc_table();< / div >
< div class = "line" > < a name = "l01737" > < / a > < span class = "lineno" > 1737< / span >   }< / div >
< div class = "line" > < a name = "l01738" > < / a > < span class = "lineno" > 1738< / span >   < / div >
< div class = "line" > < a name = "l01739" > < / a > < span class = "lineno" > 1739< / span >   < / div >
< div class = "line" > < a name = "l01740" > < / a > < span class = "lineno" > 1740< / span >   < / div >
< div class = "line" > < a name = "l01741" > < / a > < span class = "lineno" > 1741< / span >   < a class = "code" href = "structfaiss_1_1HNSW_1_1DistanceComputer.html" > HNSW::DistanceComputer< / a > * IndexHNSWPQ::get_distance_computer ()< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01742" > < / a > < span class = "lineno" > 1742< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01743" > < / a > < span class = "lineno" > 1743< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > new< / span > < a class = "code" href = "structfaiss_1_1PQDis.html" > PQDis< / a > (*dynamic_cast< IndexPQ*> (storage));< / div >
< div class = "line" > < a name = "l01744" > < / a > < span class = "lineno" > 1744< / span >   }< / div >
< div class = "line" > < a name = "l01745" > < / a > < span class = "lineno" > 1745< / span >   < / div >
< div class = "line" > < a name = "l01746" > < / a > < span class = "lineno" > 1746< / span >   < / div >
< div class = "line" > < a name = "l01747" > < / a > < span class = "lineno" > 1747< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l01748" > < / a > < span class = "lineno" > 1748< / span >   < span class = "comment" > * IndexHNSWSQ implementation< / span > < / div >
< div class = "line" > < a name = "l01749" > < / a > < span class = "lineno" > 1749< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l01750" > < / a > < span class = "lineno" > 1750< / span >   < / div >
< div class = "line" > < a name = "l01751" > < / a > < span class = "lineno" > 1751< / span >   < / div >
< div class = "line" > < a name = "l01752" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1SQDis.html" > 1752< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1SQDis.html" > SQDis< / a > : < a class = "code" href = "structfaiss_1_1HNSW_1_1DistanceComputer.html" > HNSW::DistanceComputer< / a > {< / div >
< div class = "line" > < a name = "l01753" > < / a > < span class = "lineno" > 1753< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > Index::idx_t< / a > nb;< / div >
< div class = "line" > < a name = "l01754" > < / a > < span class = "lineno" > 1754< / span >   < span class = "keyword" > const< / span > uint8_t *codes;< / div >
< div class = "line" > < a name = "l01755" > < / a > < span class = "lineno" > 1755< / span >   < span class = "keywordtype" > size_t< / span > code_size;< / div >
< div class = "line" > < a name = "l01756" > < / a > < span class = "lineno" > 1756< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1ScalarQuantizer.html" > ScalarQuantizer< / a > & sq;< / div >
< div class = "line" > < a name = "l01757" > < / a > < span class = "lineno" > 1757< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *q;< / div >
< div class = "line" > < a name = "l01758" > < / a > < span class = "lineno" > 1758< / span >   < a class = "code" href = "structfaiss_1_1ScalarQuantizer_1_1DistanceComputer.html" > ScalarQuantizer::DistanceComputer< / a > * dc;< / div >
< div class = "line" > < a name = "l01759" > < / a > < span class = "lineno" > 1759< / span >   < / div >
< div class = "line" > < a name = "l01760" > < / a > < span class = "lineno" > 1760< / span >   < span class = "keywordtype" > float< / span > operator () (storage_idx_t i)< span class = "keyword" > override< / span > < / div >
< div class = "line" > < a name = "l01761" > < / a > < span class = "lineno" > 1761< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01762" > < / a > < span class = "lineno" > 1762< / span >   < span class = "keyword" > const< / span > uint8_t *code = codes + i * code_size;< / div >
< div class = "line" > < a name = "l01763" > < / a > < span class = "lineno" > 1763< / span >   < / div >
< div class = "line" > < a name = "l01764" > < / a > < span class = "lineno" > 1764< / span >   < span class = "keywordflow" > return< / span > dc-> < a class = "code" href = "structfaiss_1_1ScalarQuantizer_1_1DistanceComputer.html#a6776bc6fc6c48335f132afa4ac38df33" > compute_distance< / a > (q, code);< / div >
< div class = "line" > < a name = "l01765" > < / a > < span class = "lineno" > 1765< / span >   }< / div >
< div class = "line" > < a name = "l01766" > < / a > < span class = "lineno" > 1766< / span >   < / div >
< div class = "line" > < a name = "l01767" > < / a > < span class = "lineno" > 1767< / span >   < span class = "keywordtype" > float< / span > symmetric_dis(storage_idx_t i, storage_idx_t j)< span class = "keyword" > override< / span > < / div >
< div class = "line" > < a name = "l01768" > < / a > < span class = "lineno" > 1768< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01769" > < / a > < span class = "lineno" > 1769< / span >   < span class = "keyword" > const< / span > uint8_t *codei = codes + i * code_size;< / div >
< div class = "line" > < a name = "l01770" > < / a > < span class = "lineno" > 1770< / span >   < span class = "keyword" > const< / span > uint8_t *codej = codes + j * code_size;< / div >
< div class = "line" > < a name = "l01771" > < / a > < span class = "lineno" > 1771< / span >   < span class = "keywordflow" > return< / span > dc-> < a class = "code" href = "structfaiss_1_1ScalarQuantizer_1_1DistanceComputer.html#a96caf21f52fcf6591d7b6b4f3fc8a729" > compute_code_distance< / a > (codei, codej);< / div >
< div class = "line" > < a name = "l01772" > < / a > < span class = "lineno" > 1772< / span >   }< / div >
< div class = "line" > < a name = "l01773" > < / a > < span class = "lineno" > 1773< / span >   < / div >
< div class = "line" > < a name = "l01774" > < / a > < span class = "lineno" > 1774< / span >   < / div >
< div class = "line" > < a name = "l01775" > < / a > < span class = "lineno" > 1775< / span >   < a class = "code" href = "structfaiss_1_1SQDis.html" > SQDis< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1IndexScalarQuantizer.html" > IndexScalarQuantizer< / a > & storage, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *q = < span class = "keyword" > nullptr< / span > ):< / div >
< div class = "line" > < a name = "l01776" > < / a > < span class = "lineno" > 1776< / span >   sq(storage.< a class = "code" href = "structfaiss_1_1IndexScalarQuantizer.html#a71381f74754d8a54812e80af46a2a83a" > sq< / a > )< / div >
< div class = "line" > < a name = "l01777" > < / a > < span class = "lineno" > 1777< / span >   {< / div >
< div class = "line" > < a name = "l01778" > < / a > < span class = "lineno" > 1778< / span >   nb = storage.< a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l01779" > < / a > < span class = "lineno" > 1779< / span >   d = storage.< a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > ;< / div >
< div class = "line" > < a name = "l01780" > < / a > < span class = "lineno" > 1780< / span >   codes = storage.< a class = "code" href = "structfaiss_1_1IndexScalarQuantizer.html#a861fa059f9d4ced9147e08193a2be9be" > codes< / a > .data();< / div >
< div class = "line" > < a name = "l01781" > < / a > < span class = "lineno" > 1781< / span >   code_size = sq.< a class = "code" href = "structfaiss_1_1ScalarQuantizer.html#a647b8774e4cd8ca5623a194f5c7f8a33" > code_size< / a > ;< / div >
< div class = "line" > < a name = "l01782" > < / a > < span class = "lineno" > 1782< / span >   dc = sq.get_distance_computer();< / div >
< div class = "line" > < a name = "l01783" > < / a > < span class = "lineno" > 1783< / span >   }< / div >
< div class = "line" > < a name = "l01784" > < / a > < span class = "lineno" > 1784< / span >   < / div >
< div class = "line" > < a name = "l01785" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1SQDis.html#a67cd2b8275b5983de5709ec4767feb13" > 1785< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1SQDis.html#a67cd2b8275b5983de5709ec4767feb13" > set_query< / a > (< span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > override < / span > {< / div >
< div class = "line" > < a name = "l01786" > < / a > < span class = "lineno" > 1786< / span >   q = x;< / div >
< div class = "line" > < a name = "l01787" > < / a > < span class = "lineno" > 1787< / span >   }< / div >
< div class = "line" > < a name = "l01788" > < / a > < span class = "lineno" > 1788< / span >   < / div >
< div class = "line" > < a name = "l01789" > < / a > < span class = "lineno" > 1789< / span >   < span class = "keyword" > virtual< / span > ~< a class = "code" href = "structfaiss_1_1SQDis.html" > SQDis< / a > () {< / div >
< div class = "line" > < a name = "l01790" > < / a > < span class = "lineno" > 1790< / span >   < span class = "keyword" > delete< / span > dc;< / div >
< div class = "line" > < a name = "l01791" > < / a > < span class = "lineno" > 1791< / span >   }< / div >
< div class = "line" > < a name = "l01792" > < / a > < span class = "lineno" > 1792< / span >   };< / div >
< div class = "line" > < a name = "l01793" > < / a > < span class = "lineno" > 1793< / span >   < / div >
< div class = "line" > < a name = "l01794" > < / a > < span class = "lineno" > 1794< / span >   IndexHNSWSQ::IndexHNSWSQ(< span class = "keywordtype" > int< / span > d, < a class = "code" href = "structfaiss_1_1ScalarQuantizer.html#a1201dbd1611fa5c10782ade5d0e4952e" > ScalarQuantizer::QuantizerType< / a > qtype, < span class = "keywordtype" > int< / span > M):< / div >
< div class = "line" > < a name = "l01795" > < / a > < span class = "lineno" > 1795< / span >   IndexHNSW (new IndexScalarQuantizer (d, qtype), M)< / div >
< div class = "line" > < a name = "l01796" > < / a > < span class = "lineno" > 1796< / span >   {< / div >
< div class = "line" > < a name = "l01797" > < / a > < span class = "lineno" > 1797< / span >   own_fields = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l01798" > < / a > < span class = "lineno" > 1798< / span >   }< / div >
< div class = "line" > < a name = "l01799" > < / a > < span class = "lineno" > 1799< / span >   < / div >
< div class = "line" > < a name = "l01800" > < / a > < span class = "lineno" > 1800< / span >   IndexHNSWSQ::IndexHNSWSQ() {}< / div >
< div class = "line" > < a name = "l01801" > < / a > < span class = "lineno" > 1801< / span >   < / div >
< div class = "line" > < a name = "l01802" > < / a > < span class = "lineno" > 1802< / span >   HNSW::DistanceComputer * IndexHNSWSQ::get_distance_computer ()< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01803" > < / a > < span class = "lineno" > 1803< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01804" > < / a > < span class = "lineno" > 1804< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > new< / span > SQDis (*dynamic_cast< IndexScalarQuantizer*> (storage));< / div >
< div class = "line" > < a name = "l01805" > < / a > < span class = "lineno" > 1805< / span >   }< / div >
< div class = "line" > < a name = "l01806" > < / a > < span class = "lineno" > 1806< / span >   < / div >
< div class = "line" > < a name = "l01807" > < / a > < span class = "lineno" > 1807< / span >   < / div >
< div class = "line" > < a name = "l01808" > < / a > < span class = "lineno" > 1808< / span >   < / div >
< div class = "line" > < a name = "l01809" > < / a > < span class = "lineno" > 1809< / span >   < / div >
< div class = "line" > < a name = "l01810" > < / a > < span class = "lineno" > 1810< / span >   < span class = "comment" > /**************************************************************< / span > < / div >
< div class = "line" > < a name = "l01811" > < / a > < span class = "lineno" > 1811< / span >   < span class = "comment" > * IndexHNSW2Level implementation< / span > < / div >
< div class = "line" > < a name = "l01812" > < / a > < span class = "lineno" > 1812< / span >   < span class = "comment" > **************************************************************/< / span > < / div >
< div class = "line" > < a name = "l01813" > < / a > < span class = "lineno" > 1813< / span >   < / div >
< div class = "line" > < a name = "l01814" > < / a > < span class = "lineno" > 1814< / span >   < / div >
< div class = "line" > < a name = "l01815" > < / a > < span class = "lineno" > 1815< / span >   < / div >
< div class = "line" > < a name = "l01816" > < / a > < span class = "lineno" > 1816< / span >   IndexHNSW2Level::IndexHNSW2Level(Index *quantizer, < span class = "keywordtype" > size_t< / span > nlist, < span class = "keywordtype" > int< / span > m_pq, < span class = "keywordtype" > int< / span > M):< / div >
< div class = "line" > < a name = "l01817" > < / a > < span class = "lineno" > 1817< / span >   IndexHNSW (new Index2Layer (quantizer, nlist, m_pq), M)< / div >
< div class = "line" > < a name = "l01818" > < / a > < span class = "lineno" > 1818< / span >   {< / div >
< div class = "line" > < a name = "l01819" > < / a > < span class = "lineno" > 1819< / span >   own_fields = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l01820" > < / a > < span class = "lineno" > 1820< / span >   is_trained = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l01821" > < / a > < span class = "lineno" > 1821< / span >   }< / div >
< div class = "line" > < a name = "l01822" > < / a > < span class = "lineno" > 1822< / span >   < / div >
< div class = "line" > < a name = "l01823" > < / a > < span class = "lineno" > 1823< / span >   IndexHNSW2Level::IndexHNSW2Level() {}< / div >
< div class = "line" > < a name = "l01824" > < / a > < span class = "lineno" > 1824< / span >   < / div >
< div class = "line" > < a name = "l01825" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1Distance2Level.html" > 1825< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1Distance2Level.html" > Distance2Level< / a > : < a class = "code" href = "structfaiss_1_1HNSW_1_1DistanceComputer.html" > HNSW::DistanceComputer< / a > {< / div >
< div class = "line" > < a name = "l01826" > < / a > < span class = "lineno" > 1826< / span >   < / div >
< div class = "line" > < a name = "l01827" > < / a > < span class = "lineno" > 1827< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1Index2Layer.html" > Index2Layer< / a > & storage;< / div >
< div class = "line" > < a name = "l01828" > < / a > < span class = "lineno" > 1828< / span >   std::vector< float> buf;< / div >
< div class = "line" > < a name = "l01829" > < / a > < span class = "lineno" > 1829< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *q;< / div >
< div class = "line" > < a name = "l01830" > < / a > < span class = "lineno" > 1830< / span >   < / div >
< div class = "line" > < a name = "l01831" > < / a > < span class = "lineno" > 1831< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *pq_l1_tab, *pq_l2_tab;< / div >
< div class = "line" > < a name = "l01832" > < / a > < span class = "lineno" > 1832< / span >   < / div >
< div class = "line" > < a name = "l01833" > < / a > < span class = "lineno" > 1833< / span >   < a class = "code" href = "structfaiss_1_1Distance2Level.html" > Distance2Level< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1Index2Layer.html" > Index2Layer< / a > & storage): storage(storage)< / div >
< div class = "line" > < a name = "l01834" > < / a > < span class = "lineno" > 1834< / span >   {< / div >
< div class = "line" > < a name = "l01835" > < / a > < span class = "lineno" > 1835< / span >   d = storage.< a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > ;< / div >
< div class = "line" > < a name = "l01836" > < / a > < span class = "lineno" > 1836< / span >   FAISS_ASSERT(storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#ab90d1de73cbc705a347cfc852ded6006" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a467b451ca203544e42c250e4be65b983" > dsub< / a > == 4);< / div >
< div class = "line" > < a name = "l01837" > < / a > < span class = "lineno" > 1837< / span >   pq_l2_tab = storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#ab90d1de73cbc705a347cfc852ded6006" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aab1109a29ba0544358e274d727b23cae" > centroids< / a > .data();< / div >
< div class = "line" > < a name = "l01838" > < / a > < span class = "lineno" > 1838< / span >   buf.resize(2 * d);< / div >
< div class = "line" > < a name = "l01839" > < / a > < span class = "lineno" > 1839< / span >   }< / div >
< div class = "line" > < a name = "l01840" > < / a > < span class = "lineno" > 1840< / span >   < / div >
< div class = "line" > < a name = "l01841" > < / a > < span class = "lineno" > 1841< / span >   < span class = "keywordtype" > float< / span > symmetric_dis(storage_idx_t i, storage_idx_t j)< span class = "keyword" > override< / span > < / div >
< div class = "line" > < a name = "l01842" > < / a > < span class = "lineno" > 1842< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01843" > < / a > < span class = "lineno" > 1843< / span >   storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#af2e505c14e62234eb251fcb37ef012d2" > reconstruct< / a > (i, buf.data());< / div >
< div class = "line" > < a name = "l01844" > < / a > < span class = "lineno" > 1844< / span >   storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#af2e505c14e62234eb251fcb37ef012d2" > reconstruct< / a > (j, buf.data() + d);< / div >
< div class = "line" > < a name = "l01845" > < / a > < span class = "lineno" > 1845< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "namespacefaiss.html#a7466bd32de31640860393a701eaac5ad" > fvec_L2sqr< / a > (buf.data() + d, buf.data(), d);< / div >
< div class = "line" > < a name = "l01846" > < / a > < span class = "lineno" > 1846< / span >   }< / div >
< div class = "line" > < a name = "l01847" > < / a > < span class = "lineno" > 1847< / span >   < / div >
< div class = "line" > < a name = "l01848" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1Distance2Level.html#aaae1348a619161ba59ff854b941137da" > 1848< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1Distance2Level.html#aaae1348a619161ba59ff854b941137da" > set_query< / a > (< span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > override < / span > {< / div >
< div class = "line" > < a name = "l01849" > < / a > < span class = "lineno" > 1849< / span >   q = x;< / div >
< div class = "line" > < a name = "l01850" > < / a > < span class = "lineno" > 1850< / span >   }< / div >
< div class = "line" > < a name = "l01851" > < / a > < span class = "lineno" > 1851< / span >   < / div >
< div class = "line" > < a name = "l01852" > < / a > < span class = "lineno" > 1852< / span >   < / div >
< div class = "line" > < a name = "l01853" > < / a > < span class = "lineno" > 1853< / span >   };< / div >
< div class = "line" > < a name = "l01854" > < / a > < span class = "lineno" > 1854< / span >   < / div >
< div class = "line" > < a name = "l01855" > < / a > < span class = "lineno" > 1855< / span >   < / div >
< div class = "line" > < a name = "l01856" > < / a > < span class = "lineno" > 1856< / span >   < span class = "comment" > // well optimized for xNN+PQNN< / span > < / div >
< div class = "line" > < a name = "l01857" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1DistanceXPQ4.html" > 1857< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1DistanceXPQ4.html" > DistanceXPQ4< / a > : < a class = "code" href = "structfaiss_1_1Distance2Level.html" > Distance2Level< / a > {< / div >
< div class = "line" > < a name = "l01858" > < / a > < span class = "lineno" > 1858< / span >   < / div >
< div class = "line" > < a name = "l01859" > < / a > < span class = "lineno" > 1859< / span >   < span class = "keywordtype" > int< / span > M, k;< / div >
< div class = "line" > < a name = "l01860" > < / a > < span class = "lineno" > 1860< / span >   < / div >
< div class = "line" > < a name = "l01861" > < / a > < span class = "lineno" > 1861< / span >   < a class = "code" href = "structfaiss_1_1DistanceXPQ4.html" > DistanceXPQ4< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1Index2Layer.html" > Index2Layer< / a > & storage):< / div >
< div class = "line" > < a name = "l01862" > < / a > < span class = "lineno" > 1862< / span >   < a class = "code" href = "structfaiss_1_1Distance2Level.html" > Distance2Level< / a > (storage)< / div >
< div class = "line" > < a name = "l01863" > < / a > < span class = "lineno" > 1863< / span >   {< / div >
< div class = "line" > < a name = "l01864" > < / a > < span class = "lineno" > 1864< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1IndexFlat.html" > IndexFlat< / a > *quantizer =< / div >
< div class = "line" > < a name = "l01865" > < / a > < span class = "lineno" > 1865< / span >   < span class = "keyword" > dynamic_cast< < / span > < a class = "code" href = "structfaiss_1_1IndexFlat.html" > IndexFlat< / a > *< span class = "keyword" > > < / span > (storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa" > q1< / a > .< a class = "code" href = "structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5" > quantizer< / a > );< / div >
< div class = "line" > < a name = "l01866" > < / a > < span class = "lineno" > 1866< / span >   < / div >
< div class = "line" > < a name = "l01867" > < / a > < span class = "lineno" > 1867< / span >   FAISS_ASSERT(quantizer);< / div >
< div class = "line" > < a name = "l01868" > < / a > < span class = "lineno" > 1868< / span >   M = storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#ab90d1de73cbc705a347cfc852ded6006" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > ;< / div >
< div class = "line" > < a name = "l01869" > < / a > < span class = "lineno" > 1869< / span >   pq_l1_tab = quantizer-> < a class = "code" href = "structfaiss_1_1IndexFlat.html#a9001de47890fe5d2eced9551d3613d47" > xb< / a > .data();< / div >
< div class = "line" > < a name = "l01870" > < / a > < span class = "lineno" > 1870< / span >   }< / div >
< div class = "line" > < a name = "l01871" > < / a > < span class = "lineno" > 1871< / span >   < / div >
< div class = "line" > < a name = "l01872" > < / a > < span class = "lineno" > 1872< / span >   < span class = "keywordtype" > float< / span > operator () (storage_idx_t i)< span class = "keyword" > override< / span > < / div >
< div class = "line" > < a name = "l01873" > < / a > < span class = "lineno" > 1873< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01874" > < / a > < span class = "lineno" > 1874< / span >   < span class = "keyword" > const< / span > uint8_t *code = storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#a8e6bcfa690ac5ab1636b3d89b144f2d9" > codes< / a > .data() + i * storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#a66403863c8ec987ed83b4d7ef4064fe9" > code_size< / a > ;< / div >
< div class = "line" > < a name = "l01875" > < / a > < span class = "lineno" > 1875< / span >   < span class = "keywordtype" > long< / span > key = 0;< / div >
< div class = "line" > < a name = "l01876" > < / a > < span class = "lineno" > 1876< / span >   memcpy (& key, code, storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#a735b2b6cc50e4186776a8213d2679837" > code_size_1< / a > );< / div >
< div class = "line" > < a name = "l01877" > < / a > < span class = "lineno" > 1877< / span >   code += storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#a735b2b6cc50e4186776a8213d2679837" > code_size_1< / a > ;< / div >
< div class = "line" > < a name = "l01878" > < / a > < span class = "lineno" > 1878< / span >   < / div >
< div class = "line" > < a name = "l01879" > < / a > < span class = "lineno" > 1879< / span >   < span class = "comment" > // walking pointers< / span > < / div >
< div class = "line" > < a name = "l01880" > < / a > < span class = "lineno" > 1880< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *qa = q;< / div >
< div class = "line" > < a name = "l01881" > < / a > < span class = "lineno" > 1881< / span >   < span class = "keyword" > const< / span > __m128 *l1_t = (< span class = "keyword" > const< / span > __m128 *)(pq_l1_tab + d * key);< / div >
< div class = "line" > < a name = "l01882" > < / a > < span class = "lineno" > 1882< / span >   < span class = "keyword" > const< / span > __m128 *pq_l2_t = (< span class = "keyword" > const< / span > __m128 *)pq_l2_tab;< / div >
< div class = "line" > < a name = "l01883" > < / a > < span class = "lineno" > 1883< / span >   __m128 accu = _mm_setzero_ps();< / div >
< div class = "line" > < a name = "l01884" > < / a > < span class = "lineno" > 1884< / span >   < / div >
< div class = "line" > < a name = "l01885" > < / a > < span class = "lineno" > 1885< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < M; m++) {< / div >
< div class = "line" > < a name = "l01886" > < / a > < span class = "lineno" > 1886< / span >   __m128 qi = _mm_loadu_ps(qa);< / div >
< div class = "line" > < a name = "l01887" > < / a > < span class = "lineno" > 1887< / span >   __m128 recons = l1_t[m] + pq_l2_t[*code++];< / div >
< div class = "line" > < a name = "l01888" > < / a > < span class = "lineno" > 1888< / span >   __m128 diff = qi - recons;< / div >
< div class = "line" > < a name = "l01889" > < / a > < span class = "lineno" > 1889< / span >   accu += diff * diff;< / div >
< div class = "line" > < a name = "l01890" > < / a > < span class = "lineno" > 1890< / span >   pq_l2_t += 256;< / div >
< div class = "line" > < a name = "l01891" > < / a > < span class = "lineno" > 1891< / span >   qa += 4;< / div >
< div class = "line" > < a name = "l01892" > < / a > < span class = "lineno" > 1892< / span >   }< / div >
< div class = "line" > < a name = "l01893" > < / a > < span class = "lineno" > 1893< / span >   < / div >
< div class = "line" > < a name = "l01894" > < / a > < span class = "lineno" > 1894< / span >   accu = _mm_hadd_ps (accu, accu);< / div >
< div class = "line" > < a name = "l01895" > < / a > < span class = "lineno" > 1895< / span >   accu = _mm_hadd_ps (accu, accu);< / div >
< div class = "line" > < a name = "l01896" > < / a > < span class = "lineno" > 1896< / span >   < span class = "keywordflow" > return< / span > _mm_cvtss_f32 (accu);< / div >
< div class = "line" > < a name = "l01897" > < / a > < span class = "lineno" > 1897< / span >   }< / div >
< div class = "line" > < a name = "l01898" > < / a > < span class = "lineno" > 1898< / span >   < / div >
< div class = "line" > < a name = "l01899" > < / a > < span class = "lineno" > 1899< / span >   };< / div >
< div class = "line" > < a name = "l01900" > < / a > < span class = "lineno" > 1900< / span >   < / div >
< div class = "line" > < a name = "l01901" > < / a > < span class = "lineno" > 1901< / span >   < span class = "comment" > // well optimized for 2xNN+PQNN< / span > < / div >
< div class = "line" > < a name = "l01902" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1Distance2xXPQ4.html" > 1902< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1Distance2xXPQ4.html" > Distance2xXPQ4< / a > : < a class = "code" href = "structfaiss_1_1Distance2Level.html" > Distance2Level< / a > {< / div >
< div class = "line" > < a name = "l01903" > < / a > < span class = "lineno" > 1903< / span >   < / div >
< div class = "line" > < a name = "l01904" > < / a > < span class = "lineno" > 1904< / span >   < span class = "keywordtype" > int< / span > M_2, mi_nbits;< / div >
< div class = "line" > < a name = "l01905" > < / a > < span class = "lineno" > 1905< / span >   < / div >
< div class = "line" > < a name = "l01906" > < / a > < span class = "lineno" > 1906< / span >   < a class = "code" href = "structfaiss_1_1Distance2xXPQ4.html" > Distance2xXPQ4< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1Index2Layer.html" > Index2Layer< / a > & storage):< / div >
< div class = "line" > < a name = "l01907" > < / a > < span class = "lineno" > 1907< / span >   < a class = "code" href = "structfaiss_1_1Distance2Level.html" > Distance2Level< / a > (storage)< / div >
< div class = "line" > < a name = "l01908" > < / a > < span class = "lineno" > 1908< / span >   {< / div >
< div class = "line" > < a name = "l01909" > < / a > < span class = "lineno" > 1909< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1MultiIndexQuantizer.html" > MultiIndexQuantizer< / a > *mi =< / div >
< div class = "line" > < a name = "l01910" > < / a > < span class = "lineno" > 1910< / span >   < span class = "keyword" > dynamic_cast< < / span > < a class = "code" href = "structfaiss_1_1MultiIndexQuantizer.html" > MultiIndexQuantizer< / a > *< span class = "keyword" > > < / span > (storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa" > q1< / a > .< a class = "code" href = "structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5" > quantizer< / a > );< / div >
< div class = "line" > < a name = "l01911" > < / a > < span class = "lineno" > 1911< / span >   < / div >
< div class = "line" > < a name = "l01912" > < / a > < span class = "lineno" > 1912< / span >   FAISS_ASSERT(mi);< / div >
< div class = "line" > < a name = "l01913" > < / a > < span class = "lineno" > 1913< / span >   FAISS_ASSERT(storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#ab90d1de73cbc705a347cfc852ded6006" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > % 2 == 0);< / div >
< div class = "line" > < a name = "l01914" > < / a > < span class = "lineno" > 1914< / span >   M_2 = storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#ab90d1de73cbc705a347cfc852ded6006" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > / 2;< / div >
< div class = "line" > < a name = "l01915" > < / a > < span class = "lineno" > 1915< / span >   mi_nbits = mi-> pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5" > nbits< / a > ;< / div >
< div class = "line" > < a name = "l01916" > < / a > < span class = "lineno" > 1916< / span >   pq_l1_tab = mi-> pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aab1109a29ba0544358e274d727b23cae" > centroids< / a > .data();< / div >
< div class = "line" > < a name = "l01917" > < / a > < span class = "lineno" > 1917< / span >   }< / div >
< div class = "line" > < a name = "l01918" > < / a > < span class = "lineno" > 1918< / span >   < / div >
< div class = "line" > < a name = "l01919" > < / a > < span class = "lineno" > 1919< / span >   < span class = "keywordtype" > float< / span > operator () (storage_idx_t i)< span class = "keyword" > override< / span > < / div >
< div class = "line" > < a name = "l01920" > < / a > < span class = "lineno" > 1920< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01921" > < / a > < span class = "lineno" > 1921< / span >   < span class = "keyword" > const< / span > uint8_t *code = storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#a8e6bcfa690ac5ab1636b3d89b144f2d9" > codes< / a > .data() + i * storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#a66403863c8ec987ed83b4d7ef4064fe9" > code_size< / a > ;< / div >
< div class = "line" > < a name = "l01922" > < / a > < span class = "lineno" > 1922< / span >   < span class = "keywordtype" > long< / span > key01 = 0;< / div >
< div class = "line" > < a name = "l01923" > < / a > < span class = "lineno" > 1923< / span >   memcpy (& key01, code, storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#a735b2b6cc50e4186776a8213d2679837" > code_size_1< / a > );< / div >
< div class = "line" > < a name = "l01924" > < / a > < span class = "lineno" > 1924< / span >   code += storage.< a class = "code" href = "structfaiss_1_1Index2Layer.html#a735b2b6cc50e4186776a8213d2679837" > code_size_1< / a > ;< / div >
< div class = "line" > < a name = "l01925" > < / a > < span class = "lineno" > 1925< / span >   < / div >
< div class = "line" > < a name = "l01926" > < / a > < span class = "lineno" > 1926< / span >   < span class = "comment" > // walking pointers< / span > < / div >
< div class = "line" > < a name = "l01927" > < / a > < span class = "lineno" > 1927< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *qa = q;< / div >
< div class = "line" > < a name = "l01928" > < / a > < span class = "lineno" > 1928< / span >   < span class = "keyword" > const< / span > __m128 *pq_l1_t = (< span class = "keyword" > const< / span > __m128 *)pq_l1_tab;< / div >
< div class = "line" > < a name = "l01929" > < / a > < span class = "lineno" > 1929< / span >   < span class = "keyword" > const< / span > __m128 *pq_l2_t = (< span class = "keyword" > const< / span > __m128 *)pq_l2_tab;< / div >
< div class = "line" > < a name = "l01930" > < / a > < span class = "lineno" > 1930< / span >   __m128 accu = _mm_setzero_ps();< / div >
< div class = "line" > < a name = "l01931" > < / a > < span class = "lineno" > 1931< / span >   < / div >
< div class = "line" > < a name = "l01932" > < / a > < span class = "lineno" > 1932< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > mi_m = 0; mi_m < 2; mi_m++) {< / div >
< div class = "line" > < a name = "l01933" > < / a > < span class = "lineno" > 1933< / span >   < span class = "keywordtype" > long< / span > l1_idx = key01 & ((1L < < mi_nbits) - 1);< / div >
< div class = "line" > < a name = "l01934" > < / a > < span class = "lineno" > 1934< / span >   < span class = "keyword" > const< / span > __m128 * pq_l1 = pq_l1_t + M_2 * l1_idx;< / div >
< div class = "line" > < a name = "l01935" > < / a > < span class = "lineno" > 1935< / span >   < / div >
< div class = "line" > < a name = "l01936" > < / a > < span class = "lineno" > 1936< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < M_2; m++) {< / div >
< div class = "line" > < a name = "l01937" > < / a > < span class = "lineno" > 1937< / span >   __m128 qi = _mm_loadu_ps(qa);< / div >
< div class = "line" > < a name = "l01938" > < / a > < span class = "lineno" > 1938< / span >   __m128 recons = pq_l1[m] + pq_l2_t[*code++];< / div >
< div class = "line" > < a name = "l01939" > < / a > < span class = "lineno" > 1939< / span >   __m128 diff = qi - recons;< / div >
< div class = "line" > < a name = "l01940" > < / a > < span class = "lineno" > 1940< / span >   accu += diff * diff;< / div >
< div class = "line" > < a name = "l01941" > < / a > < span class = "lineno" > 1941< / span >   pq_l2_t += 256;< / div >
< div class = "line" > < a name = "l01942" > < / a > < span class = "lineno" > 1942< / span >   qa += 4;< / div >
< div class = "line" > < a name = "l01943" > < / a > < span class = "lineno" > 1943< / span >   }< / div >
< div class = "line" > < a name = "l01944" > < / a > < span class = "lineno" > 1944< / span >   pq_l1_t += M_2 < < mi_nbits;< / div >
< div class = "line" > < a name = "l01945" > < / a > < span class = "lineno" > 1945< / span >   key01 > > = mi_nbits;< / div >
< div class = "line" > < a name = "l01946" > < / a > < span class = "lineno" > 1946< / span >   }< / div >
< div class = "line" > < a name = "l01947" > < / a > < span class = "lineno" > 1947< / span >   accu = _mm_hadd_ps (accu, accu);< / div >
< div class = "line" > < a name = "l01948" > < / a > < span class = "lineno" > 1948< / span >   accu = _mm_hadd_ps (accu, accu);< / div >
< div class = "line" > < a name = "l01949" > < / a > < span class = "lineno" > 1949< / span >   < span class = "keywordflow" > return< / span > _mm_cvtss_f32 (accu);< / div >
< div class = "line" > < a name = "l01950" > < / a > < span class = "lineno" > 1950< / span >   }< / div >
< div class = "line" > < a name = "l01951" > < / a > < span class = "lineno" > 1951< / span >   < / div >
< div class = "line" > < a name = "l01952" > < / a > < span class = "lineno" > 1952< / span >   };< / div >
< div class = "line" > < a name = "l01953" > < / a > < span class = "lineno" > 1953< / span >   < / div >
< div class = "line" > < a name = "l01954" > < / a > < span class = "lineno" > 1954< / span >   < / div >
< div class = "line" > < a name = "l01955" > < / a > < span class = "lineno" > 1955< / span >   < / div >
< div class = "line" > < a name = "l01956" > < / a > < span class = "lineno" > 1956< / span >   < a class = "code" href = "structfaiss_1_1HNSW_1_1DistanceComputer.html" > HNSW::DistanceComputer< / a > * IndexHNSW2Level::get_distance_computer ()< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l01957" > < / a > < span class = "lineno" > 1957< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l01958" > < / a > < span class = "lineno" > 1958< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1Index2Layer.html" > Index2Layer< / a > *storage2l =< / div >
< div class = "line" > < a name = "l01959" > < / a > < span class = "lineno" > 1959< / span >   < span class = "keyword" > dynamic_cast< < / span > < a class = "code" href = "structfaiss_1_1Index2Layer.html" > Index2Layer< / a > *< span class = "keyword" > > < / span > (storage);< / div >
< div class = "line" > < a name = "l01960" > < / a > < span class = "lineno" > 1960< / span >   < / div >
< div class = "line" > < a name = "l01961" > < / a > < span class = "lineno" > 1961< / span >   < span class = "keywordflow" > if< / span > (storage2l) {< / div >
< div class = "line" > < a name = "l01962" > < / a > < span class = "lineno" > 1962< / span >   < / div >
< div class = "line" > < a name = "l01963" > < / a > < span class = "lineno" > 1963< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1MultiIndexQuantizer.html" > MultiIndexQuantizer< / a > *mi =< / div >
< div class = "line" > < a name = "l01964" > < / a > < span class = "lineno" > 1964< / span >   < span class = "keyword" > dynamic_cast< < / span > < a class = "code" href = "structfaiss_1_1MultiIndexQuantizer.html" > MultiIndexQuantizer< / a > *< span class = "keyword" > > < / span > (storage2l-> < a class = "code" href = "structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa" > q1< / a > .< a class = "code" href = "structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5" > quantizer< / a > );< / div >
< div class = "line" > < a name = "l01965" > < / a > < span class = "lineno" > 1965< / span >   < / div >
< div class = "line" > < a name = "l01966" > < / a > < span class = "lineno" > 1966< / span >   < span class = "keywordflow" > if< / span > (mi & & storage2l-> < a class = "code" href = "structfaiss_1_1Index2Layer.html#ab90d1de73cbc705a347cfc852ded6006" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > % 2 == 0 & & storage2l-> < a class = "code" href = "structfaiss_1_1Index2Layer.html#ab90d1de73cbc705a347cfc852ded6006" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a467b451ca203544e42c250e4be65b983" > dsub< / a > == 4) {< / div >
< div class = "line" > < a name = "l01967" > < / a > < span class = "lineno" > 1967< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > new< / span > < a class = "code" href = "structfaiss_1_1Distance2xXPQ4.html" > Distance2xXPQ4< / a > (*storage2l);< / div >
< div class = "line" > < a name = "l01968" > < / a > < span class = "lineno" > 1968< / span >   }< / div >
< div class = "line" > < a name = "l01969" > < / a > < span class = "lineno" > 1969< / span >   < / div >
< div class = "line" > < a name = "l01970" > < / a > < span class = "lineno" > 1970< / span >   < span class = "keyword" > const< / span > IndexFlat *fl =< / div >
< div class = "line" > < a name = "l01971" > < / a > < span class = "lineno" > 1971< / span >   < span class = "keyword" > dynamic_cast< < / span > IndexFlat*< span class = "keyword" > > < / span > (storage2l-> < a class = "code" href = "structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa" > q1< / a > .< a class = "code" href = "structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5" > quantizer< / a > );< / div >
< div class = "line" > < a name = "l01972" > < / a > < span class = "lineno" > 1972< / span >   < / div >
< div class = "line" > < a name = "l01973" > < / a > < span class = "lineno" > 1973< / span >   < span class = "keywordflow" > if< / span > (fl & & storage2l-> < a class = "code" href = "structfaiss_1_1Index2Layer.html#ab90d1de73cbc705a347cfc852ded6006" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a467b451ca203544e42c250e4be65b983" > dsub< / a > == 4) {< / div >
< div class = "line" > < a name = "l01974" > < / a > < span class = "lineno" > 1974< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > new< / span > DistanceXPQ4(*storage2l);< / div >
< div class = "line" > < a name = "l01975" > < / a > < span class = "lineno" > 1975< / span >   }< / div >
< div class = "line" > < a name = "l01976" > < / a > < span class = "lineno" > 1976< / span >   }< / div >
< div class = "line" > < a name = "l01977" > < / a > < span class = "lineno" > 1977< / span >   < / div >
< div class = "line" > < a name = "l01978" > < / a > < span class = "lineno" > 1978< / span >   < span class = "comment" > // IVFPQ and cases not handled above< / span > < / div >
< div class = "line" > < a name = "l01979" > < / a > < span class = "lineno" > 1979< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > new< / span > GenericDistanceComputer (*storage);< / div >
< div class = "line" > < a name = "l01980" > < / a > < span class = "lineno" > 1980< / span >   < / div >
< div class = "line" > < a name = "l01981" > < / a > < span class = "lineno" > 1981< / span >   }< / div >
< div class = "line" > < a name = "l01982" > < / a > < span class = "lineno" > 1982< / span >   < / div >
< div class = "line" > < a name = "l01983" > < / a > < span class = "lineno" > 1983< / span >   < / div >
< div class = "line" > < a name = "l01984" > < / a > < span class = "lineno" > 1984< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l01985" > < / a > < span class = "lineno" > 1985< / span >   < / div >
< div class = "line" > < a name = "l01986" > < / a > < span class = "lineno" > 1986< / span >   < / div >
< div class = "line" > < a name = "l01987" > < / a > < span class = "lineno" > 1987< / span >   < span class = "comment" > // same as search_from_candidates but uses v< / span > < / div >
< div class = "line" > < a name = "l01988" > < / a > < span class = "lineno" > 1988< / span >   < span class = "comment" > // visno -> is in result list< / span > < / div >
< div class = "line" > < a name = "l01989" > < / a > < span class = "lineno" > 1989< / span >   < span class = "comment" > // visno + 1 -> in result list + in candidates< / span > < / div >
< div class = "line" > < a name = "l01990" > < / a > < span class = "lineno" > 1990< / span >   < span class = "keywordtype" > int< / span > search_from_candidates_2(< span class = "keyword" > const< / span > HNSW & hnsw,< / div >
< div class = "line" > < a name = "l01991" > < / a > < span class = "lineno" > 1991< / span >   DistanceComputer & qdis, < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l01992" > < / a > < span class = "lineno" > 1992< / span >   idx_t *I, < span class = "keywordtype" > float< / span > * D,< / div >
< div class = "line" > < a name = "l01993" > < / a > < span class = "lineno" > 1993< / span >   MinimaxHeap & candidates,< / div >
< div class = "line" > < a name = "l01994" > < / a > < span class = "lineno" > 1994< / span >   VisitedTable & vt,< / div >
< div class = "line" > < a name = "l01995" > < / a > < span class = "lineno" > 1995< / span >   < span class = "keywordtype" > int< / span > level, < span class = "keywordtype" > int< / span > nres_in = 0)< / div >
< div class = "line" > < a name = "l01996" > < / a > < span class = "lineno" > 1996< / span >   {< / div >
< div class = "line" > < a name = "l01997" > < / a > < span class = "lineno" > 1997< / span >   < span class = "keywordtype" > int< / span > nres = nres_in;< / div >
< div class = "line" > < a name = "l01998" > < / a > < span class = "lineno" > 1998< / span >   < span class = "keywordtype" > int< / span > ndis = 0;< / div >
< div class = "line" > < a name = "l01999" > < / a > < span class = "lineno" > 1999< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < candidates.size(); i++) {< / div >
< div class = "line" > < a name = "l02000" > < / a > < span class = "lineno" > 2000< / span >   idx_t v1 = candidates.ids[i];< / div >
< div class = "line" > < a name = "l02001" > < / a > < span class = "lineno" > 2001< / span >   < span class = "keywordtype" > float< / span > d = candidates.dis[i];< / div >
< div class = "line" > < a name = "l02002" > < / a > < span class = "lineno" > 2002< / span >   FAISS_ASSERT(v1 > = 0);< / div >
< div class = "line" > < a name = "l02003" > < / a > < span class = "lineno" > 2003< / span >   vt.visited[v1] = vt.visno + 1;< / div >
< div class = "line" > < a name = "l02004" > < / a > < span class = "lineno" > 2004< / span >   }< / div >
< div class = "line" > < a name = "l02005" > < / a > < span class = "lineno" > 2005< / span >   < / div >
< div class = "line" > < a name = "l02006" > < / a > < span class = "lineno" > 2006< / span >   < span class = "keywordtype" > bool< / span > do_dis_check = hnsw.check_relative_distance;< / div >
< div class = "line" > < a name = "l02007" > < / a > < span class = "lineno" > 2007< / span >   < span class = "keywordtype" > int< / span > nstep = 0;< / div >
< div class = "line" > < a name = "l02008" > < / a > < span class = "lineno" > 2008< / span >   < / div >
< div class = "line" > < a name = "l02009" > < / a > < span class = "lineno" > 2009< / span >   < span class = "keywordflow" > while< / span > (candidates.size() > 0) {< / div >
< div class = "line" > < a name = "l02010" > < / a > < span class = "lineno" > 2010< / span >   < span class = "keywordtype" > float< / span > d0 = 0;< / div >
< div class = "line" > < a name = "l02011" > < / a > < span class = "lineno" > 2011< / span >   < span class = "keywordtype" > int< / span > v0 = candidates.pop_min(& d0);< / div >
< div class = "line" > < a name = "l02012" > < / a > < span class = "lineno" > 2012< / span >   < / div >
< div class = "line" > < a name = "l02013" > < / a > < span class = "lineno" > 2013< / span >   < span class = "keywordflow" > if< / span > (do_dis_check) {< / div >
< div class = "line" > < a name = "l02014" > < / a > < span class = "lineno" > 2014< / span >   < span class = "comment" > // tricky stopping condition: there are more that ef< / span > < / div >
< div class = "line" > < a name = "l02015" > < / a > < span class = "lineno" > 2015< / span >   < span class = "comment" > // distances that are processed already that are smaller< / span > < / div >
< div class = "line" > < a name = "l02016" > < / a > < span class = "lineno" > 2016< / span >   < span class = "comment" > // than d0< / span > < / div >
< div class = "line" > < a name = "l02017" > < / a > < span class = "lineno" > 2017< / span >   < / div >
< div class = "line" > < a name = "l02018" > < / a > < span class = "lineno" > 2018< / span >   < span class = "keywordtype" > int< / span > n_dis_below = candidates.count_below(d0);< / div >
< div class = "line" > < a name = "l02019" > < / a > < span class = "lineno" > 2019< / span >   < span class = "keywordflow" > if< / span > (n_dis_below > = hnsw.efSearch) {< / div >
< div class = "line" > < a name = "l02020" > < / a > < span class = "lineno" > 2020< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l02021" > < / a > < span class = "lineno" > 2021< / span >   }< / div >
< div class = "line" > < a name = "l02022" > < / a > < span class = "lineno" > 2022< / span >   }< / div >
< div class = "line" > < a name = "l02023" > < / a > < span class = "lineno" > 2023< / span >   < span class = "keywordtype" > size_t< / span > begin, end;< / div >
< div class = "line" > < a name = "l02024" > < / a > < span class = "lineno" > 2024< / span >   hnsw.neighbor_range(v0, level, & begin, & end);< / div >
< div class = "line" > < a name = "l02025" > < / a > < span class = "lineno" > 2025< / span >   < / div >
< div class = "line" > < a name = "l02026" > < / a > < span class = "lineno" > 2026< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = begin; j < end; j++) {< / div >
< div class = "line" > < a name = "l02027" > < / a > < span class = "lineno" > 2027< / span >   < span class = "keywordtype" > int< / span > v1 = hnsw.neighbors[j];< / div >
< div class = "line" > < a name = "l02028" > < / a > < span class = "lineno" > 2028< / span >   < span class = "keywordflow" > if< / span > (v1 < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l02029" > < / a > < span class = "lineno" > 2029< / span >   < span class = "keywordflow" > if< / span > (vt.visited[v1] == vt.visno + 1) {< / div >
< div class = "line" > < a name = "l02030" > < / a > < span class = "lineno" > 2030< / span >   < span class = "comment" > // nothing to do< / span > < / div >
< div class = "line" > < a name = "l02031" > < / a > < span class = "lineno" > 2031< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l02032" > < / a > < span class = "lineno" > 2032< / span >   ndis++;< / div >
< div class = "line" > < a name = "l02033" > < / a > < span class = "lineno" > 2033< / span >   < span class = "keywordtype" > float< / span > d = qdis(v1);< / div >
< div class = "line" > < a name = "l02034" > < / a > < span class = "lineno" > 2034< / span >   candidates.push(v1, d);< / div >
< div class = "line" > < a name = "l02035" > < / a > < span class = "lineno" > 2035< / span >   < / div >
< div class = "line" > < a name = "l02036" > < / a > < span class = "lineno" > 2036< / span >   < span class = "comment" > // never seen before --> add to heap< / span > < / div >
< div class = "line" > < a name = "l02037" > < / a > < span class = "lineno" > 2037< / span >   < span class = "keywordflow" > if< / span > (vt.visited[v1] < vt.visno) {< / div >
< div class = "line" > < a name = "l02038" > < / a > < span class = "lineno" > 2038< / span >   < span class = "keywordflow" > if< / span > (nres < k) {< / div >
< div class = "line" > < a name = "l02039" > < / a > < span class = "lineno" > 2039< / span >   faiss::maxheap_push (++nres, D, I, d, v1);< / div >
< div class = "line" > < a name = "l02040" > < / a > < span class = "lineno" > 2040< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (d < D[0]) {< / div >
< div class = "line" > < a name = "l02041" > < / a > < span class = "lineno" > 2041< / span >   faiss::maxheap_pop (nres--, D, I);< / div >
< div class = "line" > < a name = "l02042" > < / a > < span class = "lineno" > 2042< / span >   faiss::maxheap_push (++nres, D, I, d, v1);< / div >
< div class = "line" > < a name = "l02043" > < / a > < span class = "lineno" > 2043< / span >   }< / div >
< div class = "line" > < a name = "l02044" > < / a > < span class = "lineno" > 2044< / span >   }< / div >
< div class = "line" > < a name = "l02045" > < / a > < span class = "lineno" > 2045< / span >   vt.visited[v1] = vt.visno + 1;< / div >
< div class = "line" > < a name = "l02046" > < / a > < span class = "lineno" > 2046< / span >   }< / div >
< div class = "line" > < a name = "l02047" > < / a > < span class = "lineno" > 2047< / span >   }< / div >
< div class = "line" > < a name = "l02048" > < / a > < span class = "lineno" > 2048< / span >   < / div >
< div class = "line" > < a name = "l02049" > < / a > < span class = "lineno" > 2049< / span >   nstep++;< / div >
< div class = "line" > < a name = "l02050" > < / a > < span class = "lineno" > 2050< / span >   < span class = "keywordflow" > if< / span > (!do_dis_check & & nstep > hnsw.efSearch) {< / div >
< div class = "line" > < a name = "l02051" > < / a > < span class = "lineno" > 2051< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l02052" > < / a > < span class = "lineno" > 2052< / span >   }< / div >
< div class = "line" > < a name = "l02053" > < / a > < span class = "lineno" > 2053< / span >   }< / div >
< div class = "line" > < a name = "l02054" > < / a > < span class = "lineno" > 2054< / span >   < / div >
< div class = "line" > < a name = "l02055" > < / a > < span class = "lineno" > 2055< / span >   < span class = "keywordflow" > if< / span > (level == 0) {< / div >
< div class = "line" > < a name = "l02056" > < / a > < span class = "lineno" > 2056< / span >   < span class = "preprocessor" > #pragma omp critical< / span > < / div >
< div class = "line" > < a name = "l02057" > < / a > < span class = "lineno" > 2057< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l02058" > < / a > < span class = "lineno" > 2058< / span >   hnsw_stats.n1 ++;< / div >
< div class = "line" > < a name = "l02059" > < / a > < span class = "lineno" > 2059< / span >   < span class = "keywordflow" > if< / span > (candidates.size() == 0)< / div >
< div class = "line" > < a name = "l02060" > < / a > < span class = "lineno" > 2060< / span >   hnsw_stats.n2 ++;< / div >
< div class = "line" > < a name = "l02061" > < / a > < span class = "lineno" > 2061< / span >   }< / div >
< div class = "line" > < a name = "l02062" > < / a > < span class = "lineno" > 2062< / span >   }< / div >
< div class = "line" > < a name = "l02063" > < / a > < span class = "lineno" > 2063< / span >   < / div >
< div class = "line" > < a name = "l02064" > < / a > < span class = "lineno" > 2064< / span >   < / div >
< div class = "line" > < a name = "l02065" > < / a > < span class = "lineno" > 2065< / span >   < span class = "keywordflow" > return< / span > nres;< / div >
< div class = "line" > < a name = "l02066" > < / a > < span class = "lineno" > 2066< / span >   }< / div >
< div class = "line" > < a name = "l02067" > < / a > < span class = "lineno" > 2067< / span >   < / div >
< div class = "line" > < a name = "l02068" > < / a > < span class = "lineno" > 2068< / span >   < / div >
< div class = "line" > < a name = "l02069" > < / a > < span class = "lineno" > 2069< / span >   } < span class = "comment" > // anonymous namespace< / span > < / div >
< div class = "line" > < a name = "l02070" > < / a > < span class = "lineno" > 2070< / span >   < / div >
< div class = "line" > < a name = "l02071" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexHNSW2Level.html#a50a087a17ce5a7a1fbcca0836959b4ec" > 2071< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexHNSW2Level.html#a50a087a17ce5a7a1fbcca0836959b4ec" > IndexHNSW2Level::search< / a > (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x, idx_t k,< / div >
< div class = "line" > < a name = "l02072" > < / a > < span class = "lineno" > 2072< / span >   < span class = "keywordtype" > float< / span > *distances, idx_t *labels)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l02073" > < / a > < span class = "lineno" > 2073< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l02074" > < / a > < span class = "lineno" > 2074< / span >   < span class = "keywordflow" > if< / span > (dynamic_cast< const Index2Layer*> (storage)) {< / div >
< div class = "line" > < a name = "l02075" > < / a > < span class = "lineno" > 2075< / span >   < a class = "code" href = "structfaiss_1_1IndexHNSW.html#ae0ddf6ab4a54239a25d6277e21e8548e" > IndexHNSW::search< / a > (n, x, k, distances, labels);< / div >
< div class = "line" > < a name = "l02076" > < / a > < span class = "lineno" > 2076< / span >   < / div >
< div class = "line" > < a name = "l02077" > < / a > < span class = "lineno" > 2077< / span >   } < span class = "keywordflow" > else< / span > { < span class = "comment" > // " mixed" search< / span > < / div >
< div class = "line" > < a name = "l02078" > < / a > < span class = "lineno" > 2078< / span >   < / div >
< div class = "line" > < a name = "l02079" > < / a > < span class = "lineno" > 2079< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1IndexIVFPQ.html" > IndexIVFPQ< / a > *index_ivfpq =< / div >
< div class = "line" > < a name = "l02080" > < / a > < span class = "lineno" > 2080< / span >   < span class = "keyword" > dynamic_cast< < / span > < span class = "keyword" > const < / span > < a class = "code" href = "structfaiss_1_1IndexIVFPQ.html" > IndexIVFPQ< / a > *< span class = "keyword" > > < / span > (storage);< / div >
< div class = "line" > < a name = "l02081" > < / a > < span class = "lineno" > 2081< / span >   < / div >
< div class = "line" > < a name = "l02082" > < / a > < span class = "lineno" > 2082< / span >   < span class = "keywordtype" > int< / span > nprobe = index_ivfpq-> < a class = "code" href = "structfaiss_1_1IndexIVF.html#affed235eadf27a13d753ee4d33a1dc58" > nprobe< / a > ;< / div >
< div class = "line" > < a name = "l02083" > < / a > < span class = "lineno" > 2083< / span >   < / div >
< div class = "line" > < a name = "l02084" > < / a > < span class = "lineno" > 2084< / span >   < span class = "keywordtype" > long< / span > * coarse_assign = < span class = "keyword" > new< / span > < span class = "keywordtype" > long< / span > [n * nprobe];< / div >
< div class = "line" > < a name = "l02085" > < / a > < span class = "lineno" > 2085< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< long> < / a > del (coarse_assign);< / div >
< div class = "line" > < a name = "l02086" > < / a > < span class = "lineno" > 2086< / span >   < span class = "keywordtype" > float< / span > * coarse_dis = < span class = "keyword" > new< / span > < span class = "keywordtype" > float< / span > [n * nprobe];< / div >
< div class = "line" > < a name = "l02087" > < / a > < span class = "lineno" > 2087< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del2 (coarse_dis);< / div >
< div class = "line" > < a name = "l02088" > < / a > < span class = "lineno" > 2088< / span >   < / div >
< div class = "line" > < a name = "l02089" > < / a > < span class = "lineno" > 2089< / span >   index_ivfpq-> < a class = "code" href = "structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5" > quantizer< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7" > search< / a > (n, x, nprobe, coarse_dis, coarse_assign);< / div >
< div class = "line" > < a name = "l02090" > < / a > < span class = "lineno" > 2090< / span >   < / div >
< div class = "line" > < a name = "l02091" > < / a > < span class = "lineno" > 2091< / span >   index_ivfpq-> < a class = "code" href = "structfaiss_1_1IndexIVFPQ.html#a150a37cf3e8a7e37cb8dab1d5678bc02" > search_preassigned< / a > (< / div >
< div class = "line" > < a name = "l02092" > < / a > < span class = "lineno" > 2092< / span >   n, x, k, coarse_assign, coarse_dis, distances, labels, < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a name = "l02093" > < / a > < span class = "lineno" > 2093< / span >   < / div >
< div class = "line" > < a name = "l02094" > < / a > < span class = "lineno" > 2094< / span >   < span class = "preprocessor" > #pragma omp parallel< / span > < / div >
< div class = "line" > < a name = "l02095" > < / a > < span class = "lineno" > 2095< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l02096" > < / a > < span class = "lineno" > 2096< / span >   < a class = "code" href = "structfaiss_1_1VisitedTable.html" > VisitedTable< / a > vt (ntotal);< / div >
< div class = "line" > < a name = "l02097" > < / a > < span class = "lineno" > 2097< / span >   DistanceComputer *dis = get_distance_computer();< / div >
< div class = "line" > < a name = "l02098" > < / a > < span class = "lineno" > 2098< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter1.html" > ScopeDeleter1< DistanceComputer> < / a > del(dis);< / div >
< div class = "line" > < a name = "l02099" > < / a > < span class = "lineno" > 2099< / span >   < / div >
< div class = "line" > < a name = "l02100" > < / a > < span class = "lineno" > 2100< / span >   < span class = "keywordtype" > int< / span > candidates_size = hnsw.upper_beam;< / div >
< div class = "line" > < a name = "l02101" > < / a > < span class = "lineno" > 2101< / span >   MinimaxHeap candidates(candidates_size);< / div >
< div class = "line" > < a name = "l02102" > < / a > < span class = "lineno" > 2102< / span >   < / div >
< div class = "line" > < a name = "l02103" > < / a > < span class = "lineno" > 2103< / span >   < span class = "preprocessor" > #pragma omp for< / span > < / div >
< div class = "line" > < a name = "l02104" > < / a > < span class = "lineno" > 2104< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l02105" > < / a > < span class = "lineno" > 2105< / span >   idx_t * idxi = labels + i * k;< / div >
< div class = "line" > < a name = "l02106" > < / a > < span class = "lineno" > 2106< / span >   < span class = "keywordtype" > float< / span > * simi = distances + i * k;< / div >
< div class = "line" > < a name = "l02107" > < / a > < span class = "lineno" > 2107< / span >   dis-> set_query(x + i * d);< / div >
< div class = "line" > < a name = "l02108" > < / a > < span class = "lineno" > 2108< / span >   < / div >
< div class = "line" > < a name = "l02109" > < / a > < span class = "lineno" > 2109< / span >   < span class = "comment" > // mark all inverted list elements as visited< / span > < / div >
< div class = "line" > < a name = "l02110" > < / a > < span class = "lineno" > 2110< / span >   < / div >
< div class = "line" > < a name = "l02111" > < / a > < span class = "lineno" > 2111< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < nprobe; j++) {< / div >
< div class = "line" > < a name = "l02112" > < / a > < span class = "lineno" > 2112< / span >   idx_t key = coarse_assign[j + i * nprobe];< / div >
< div class = "line" > < a name = "l02113" > < / a > < span class = "lineno" > 2113< / span >   < span class = "keywordflow" > if< / span > (key < 0) < span class = "keywordflow" > break< / span > ;< / div >
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< div class = "line" > < a name = "l02114" > < / a > < span class = "lineno" > 2114< / span >   < span class = "keywordtype" > size_t< / span > list_length = index_ivfpq-> get_list_size (key);< / div >
< div class = "line" > < a name = "l02115" > < / a > < span class = "lineno" > 2115< / span >   < span class = "keyword" > const< / span > idx_t * ids = index_ivfpq-> < a class = "code" href = "structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc" > invlists< / a > -> < a class = "code" href = "structfaiss_1_1InvertedLists.html#a3ab6b389d8d85c5fbf23889064df7e95" > get_ids< / a > (key);< / div >
< div class = "line" > < a name = "l02116" > < / a > < span class = "lineno" > 2116< / span >   < / div >
< div class = "line" > < a name = "l02117" > < / a > < span class = "lineno" > 2117< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > jj = 0; jj < list_length; jj++) {< / div >
< div class = "line" > < a name = "l02118" > < / a > < span class = "lineno" > 2118< / span >   vt.< a class = "code" href = "structfaiss_1_1VisitedTable.html#a387b6428f4bfa44495c70a5f1f45f853" > set< / a > (ids[jj]);< / div >
< div class = "line" > < a name = "l02119" > < / a > < span class = "lineno" > 2119< / span >   }< / div >
< div class = "line" > < a name = "l02120" > < / a > < span class = "lineno" > 2120< / span >   }< / div >
< div class = "line" > < a name = "l02121" > < / a > < span class = "lineno" > 2121< / span >   < / div >
< div class = "line" > < a name = "l02122" > < / a > < span class = "lineno" > 2122< / span >   candidates.clear();< / div >
< div class = "line" > < a name = "l02123" > < / a > < span class = "lineno" > 2123< / span >   < span class = "comment" > // copy the upper_beam elements to candidates list< / span > < / div >
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< div class = "line" > < a name = "l02124" > < / a > < span class = "lineno" > 2124< / span >   < / div >
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< div class = "line" > < a name = "l02125" > < / a > < span class = "lineno" > 2125< / span >   < span class = "keywordtype" > int< / span > search_policy = 2;< / div >
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< div class = "line" > < a name = "l02126" > < / a > < span class = "lineno" > 2126< / span >   < / div >
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< div class = "line" > < a name = "l02127" > < / a > < span class = "lineno" > 2127< / span >   < span class = "keywordflow" > if< / span > (search_policy == 1) {< / div >
< div class = "line" > < a name = "l02128" > < / a > < span class = "lineno" > 2128< / span >   < / div >
< div class = "line" > < a name = "l02129" > < / a > < span class = "lineno" > 2129< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0 ; j < hnsw.upper_beam & & j < k; j++) {< / div >
< div class = "line" > < a name = "l02130" > < / a > < span class = "lineno" > 2130< / span >   < span class = "keywordflow" > if< / span > (idxi[j] < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l02131" > < / a > < span class = "lineno" > 2131< / span >   candidates.push (idxi[j], simi[j]);< / div >
< div class = "line" > < a name = "l02132" > < / a > < span class = "lineno" > 2132< / span >   < span class = "comment" > // search_from_candidates adds them back< / span > < / div >
< div class = "line" > < a name = "l02133" > < / a > < span class = "lineno" > 2133< / span >   idxi[j] = -1;< / div >
< div class = "line" > < a name = "l02134" > < / a > < span class = "lineno" > 2134< / span >   simi[j] = HUGE_VAL;< / div >
< div class = "line" > < a name = "l02135" > < / a > < span class = "lineno" > 2135< / span >   }< / div >
< div class = "line" > < a name = "l02136" > < / a > < span class = "lineno" > 2136< / span >   < / div >
< div class = "line" > < a name = "l02137" > < / a > < span class = "lineno" > 2137< / span >   < span class = "comment" > // reorder from sorted to heap< / span > < / div >
< div class = "line" > < a name = "l02138" > < / a > < span class = "lineno" > 2138< / span >   maxheap_heapify (k, simi, idxi, simi, idxi, k);< / div >
< div class = "line" > < a name = "l02139" > < / a > < span class = "lineno" > 2139< / span >   < / div >
< div class = "line" > < a name = "l02140" > < / a > < span class = "lineno" > 2140< / span >   search_from_candidates (< / div >
< div class = "line" > < a name = "l02141" > < / a > < span class = "lineno" > 2141< / span >   hnsw, *dis, k, idxi, simi,< / div >
< div class = "line" > < a name = "l02142" > < / a > < span class = "lineno" > 2142< / span >   candidates, vt, 0, k);< / div >
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< div class = "line" > < a name = "l02143" > < / a > < span class = "lineno" > 2143< / span >   < / div >
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< div class = "line" > < a name = "l02144" > < / a > < span class = "lineno" > 2144< / span >   vt.< a class = "code" href = "structfaiss_1_1VisitedTable.html#a76223893c8c3a577473092b3bb8a2446" > advance< / a > ();< / div >
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< div class = "line" > < a name = "l02145" > < / a > < span class = "lineno" > 2145< / span >   < / div >
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< div class = "line" > < a name = "l02146" > < / a > < span class = "lineno" > 2146< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (search_policy == 2) {< / div >
< div class = "line" > < a name = "l02147" > < / a > < span class = "lineno" > 2147< / span >   < / div >
< div class = "line" > < a name = "l02148" > < / a > < span class = "lineno" > 2148< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0 ; j < hnsw.upper_beam & & j < k; j++) {< / div >
< div class = "line" > < a name = "l02149" > < / a > < span class = "lineno" > 2149< / span >   < span class = "keywordflow" > if< / span > (idxi[j] < 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l02150" > < / a > < span class = "lineno" > 2150< / span >   candidates.push (idxi[j], simi[j]);< / div >
< div class = "line" > < a name = "l02151" > < / a > < span class = "lineno" > 2151< / span >   }< / div >
< div class = "line" > < a name = "l02152" > < / a > < span class = "lineno" > 2152< / span >   < / div >
< div class = "line" > < a name = "l02153" > < / a > < span class = "lineno" > 2153< / span >   < span class = "comment" > // reorder from sorted to heap< / span > < / div >
< div class = "line" > < a name = "l02154" > < / a > < span class = "lineno" > 2154< / span >   maxheap_heapify (k, simi, idxi, simi, idxi, k);< / div >
< div class = "line" > < a name = "l02155" > < / a > < span class = "lineno" > 2155< / span >   < / div >
< div class = "line" > < a name = "l02156" > < / a > < span class = "lineno" > 2156< / span >   search_from_candidates_2 (< / div >
< div class = "line" > < a name = "l02157" > < / a > < span class = "lineno" > 2157< / span >   hnsw, *dis, k, idxi, simi,< / div >
< div class = "line" > < a name = "l02158" > < / a > < span class = "lineno" > 2158< / span >   candidates, vt, 0, k);< / div >
< div class = "line" > < a name = "l02159" > < / a > < span class = "lineno" > 2159< / span >   vt.< a class = "code" href = "structfaiss_1_1VisitedTable.html#a76223893c8c3a577473092b3bb8a2446" > advance< / a > ();< / div >
< div class = "line" > < a name = "l02160" > < / a > < span class = "lineno" > 2160< / span >   vt.< a class = "code" href = "structfaiss_1_1VisitedTable.html#a76223893c8c3a577473092b3bb8a2446" > advance< / a > ();< / div >
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< div class = "line" > < a name = "l02161" > < / a > < span class = "lineno" > 2161< / span >   < / div >
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< div class = "line" > < a name = "l02162" > < / a > < span class = "lineno" > 2162< / span >   }< / div >
< div class = "line" > < a name = "l02163" > < / a > < span class = "lineno" > 2163< / span >   < / div >
< div class = "line" > < a name = "l02164" > < / a > < span class = "lineno" > 2164< / span >   maxheap_reorder (k, simi, idxi);< / div >
< div class = "line" > < a name = "l02165" > < / a > < span class = "lineno" > 2165< / span >   }< / div >
< div class = "line" > < a name = "l02166" > < / a > < span class = "lineno" > 2166< / span >   }< / div >
< div class = "line" > < a name = "l02167" > < / a > < span class = "lineno" > 2167< / span >   }< / div >
< div class = "line" > < a name = "l02168" > < / a > < span class = "lineno" > 2168< / span >   < / div >
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< div class = "line" > < a name = "l02169" > < / a > < span class = "lineno" > 2169< / span >   < / div >
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< div class = "line" > < a name = "l02170" > < / a > < span class = "lineno" > 2170< / span >   }< / div >
< div class = "line" > < a name = "l02171" > < / a > < span class = "lineno" > 2171< / span >   < / div >
< div class = "line" > < a name = "l02172" > < / a > < span class = "lineno" > 2172< / span >   < / div >
< div class = "line" > < a name = "l02173" > < / a > < span class = "lineno" > 2173< / span >   < span class = "keywordtype" > void< / span > IndexHNSW2Level::flip_to_ivf ()< / div >
< div class = "line" > < a name = "l02174" > < / a > < span class = "lineno" > 2174< / span >   {< / div >
< div class = "line" > < a name = "l02175" > < / a > < span class = "lineno" > 2175< / span >   < a class = "code" href = "structfaiss_1_1Index2Layer.html" > Index2Layer< / a > *storage2l =< / div >
< div class = "line" > < a name = "l02176" > < / a > < span class = "lineno" > 2176< / span >   < span class = "keyword" > dynamic_cast< < / span > < a class = "code" href = "structfaiss_1_1Index2Layer.html" > Index2Layer< / a > *< span class = "keyword" > > < / span > (storage);< / div >
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< div class = "line" > < a name = "l02177" > < / a > < span class = "lineno" > 2177< / span >   < / div >
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< div class = "line" > < a name = "l02178" > < / a > < span class = "lineno" > 2178< / span >   FAISS_THROW_IF_NOT (storage2l);< / div >
< div class = "line" > < a name = "l02179" > < / a > < span class = "lineno" > 2179< / span >   < / div >
< div class = "line" > < a name = "l02180" > < / a > < span class = "lineno" > 2180< / span >   < a class = "code" href = "structfaiss_1_1IndexIVFPQ.html" > IndexIVFPQ< / a > * index_ivfpq =< / div >
< div class = "line" > < a name = "l02181" > < / a > < span class = "lineno" > 2181< / span >   < span class = "keyword" > new< / span > < a class = "code" href = "structfaiss_1_1IndexIVFPQ.html" > IndexIVFPQ< / a > (storage2l-> < a class = "code" href = "structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa" > q1< / a > .< a class = "code" href = "structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5" > quantizer< / a > ,< / div >
< div class = "line" > < a name = "l02182" > < / a > < span class = "lineno" > 2182< / span >   d, storage2l-> < a class = "code" href = "structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa" > q1< / a > .< a class = "code" href = "structfaiss_1_1Level1Quantizer.html#a1c4fc9d874d9492ee0ea27a5be388fa7" > nlist< / a > ,< / div >
< div class = "line" > < a name = "l02183" > < / a > < span class = "lineno" > 2183< / span >   storage2l-> < a class = "code" href = "structfaiss_1_1Index2Layer.html#ab90d1de73cbc705a347cfc852ded6006" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > , 8);< / div >
< div class = "line" > < a name = "l02184" > < / a > < span class = "lineno" > 2184< / span >   index_ivfpq-> < a class = "code" href = "structfaiss_1_1IndexIVFPQ.html#a007303be116c8da65b6d058e3fc77d16" > pq< / a > = storage2l-> < a class = "code" href = "structfaiss_1_1Index2Layer.html#ab90d1de73cbc705a347cfc852ded6006" > pq< / a > ;< / div >
< div class = "line" > < a name = "l02185" > < / a > < span class = "lineno" > 2185< / span >   index_ivfpq-> < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = storage2l-> < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > ;< / div >
< div class = "line" > < a name = "l02186" > < / a > < span class = "lineno" > 2186< / span >   index_ivfpq-> < a class = "code" href = "structfaiss_1_1IndexIVFPQ.html#ad99c215aeaf92e995cb97f4044c4d267" > precompute_table< / a > ();< / div >
< div class = "line" > < a name = "l02187" > < / a > < span class = "lineno" > 2187< / span >   index_ivfpq-> < a class = "code" href = "structfaiss_1_1Level1Quantizer.html#ab688c629cd42122d73517078b87f483d" > own_fields< / a > = storage2l-> < a class = "code" href = "structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa" > q1< / a > .< a class = "code" href = "structfaiss_1_1Level1Quantizer.html#ab688c629cd42122d73517078b87f483d" > own_fields< / a > ;< / div >
< div class = "line" > < a name = "l02188" > < / a > < span class = "lineno" > 2188< / span >   storage2l-> < a class = "code" href = "structfaiss_1_1Index2Layer.html#a8692273ff51ab7f34748c3d5b3295216" > transfer_to_IVFPQ< / a > (*index_ivfpq);< / div >
< div class = "line" > < a name = "l02189" > < / a > < span class = "lineno" > 2189< / span >   index_ivfpq-> < a class = "code" href = "structfaiss_1_1IndexIVF.html#a1c11ce77f459e2ab3e5d9a4c2263ad89" > make_direct_map< / a > (< span class = "keyword" > true< / span > );< / div >
< div class = "line" > < a name = "l02190" > < / a > < span class = "lineno" > 2190< / span >   < / div >
< div class = "line" > < a name = "l02191" > < / a > < span class = "lineno" > 2191< / span >   storage = index_ivfpq;< / div >
< div class = "line" > < a name = "l02192" > < / a > < span class = "lineno" > 2192< / span >   < span class = "keyword" > delete< / span > storage2l;< / div >
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< div class = "line" > < a name = "l02193" > < / a > < span class = "lineno" > 2193< / span >   < / div >
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< div class = "line" > < a name = "l02194" > < / a > < span class = "lineno" > 2194< / span >   }< / div >
< div class = "line" > < a name = "l02195" > < / a > < span class = "lineno" > 2195< / span >   < / div >
< div class = "line" > < a name = "l02196" > < / a > < span class = "lineno" > 2196< / span >   < / div >
< div class = "line" > < a name = "l02197" > < / a > < span class = "lineno" > 2197< / span >   } < span class = "comment" > // namespace faiss< / span > < / div >
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< div class = "ttc" id = "structfaiss_1_1RandomGenerator_html" > < div class = "ttname" > < a href = "structfaiss_1_1RandomGenerator.html" > faiss::RandomGenerator< / a > < / div > < div class = "ttdoc" > random generator that can be used in multithreaded contexts < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8h_source.html#l00048" > utils.h:48< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexIVFPQ_html_ad99c215aeaf92e995cb97f4044c4d267" > < div class = "ttname" > < a href = "structfaiss_1_1IndexIVFPQ.html#ad99c215aeaf92e995cb97f4044c4d267" > faiss::IndexIVFPQ::precompute_table< / a > < / div > < div class = "ttdeci" > void precompute_table()< / div > < div class = "ttdoc" > build precomputed table < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8cpp_source.html#l00355" > IndexIVFPQ.cpp:355< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a314b809de6f329662ab09f258b49afb3" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a314b809de6f329662ab09f258b49afb3" > faiss::HNSW::add_with_locks< / a > < / div > < div class = "ttdeci" > void add_with_locks(DistanceComputer & ptdis, int pt_level, int pt_id, std::vector< omp_lock_t > & locks, VisitedTable & vt)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00657" > IndexHNSW.cpp:657< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a490b64b12384951ed66548a3a48f91e5" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > faiss::IndexPQ::codes< / a > < / div > < div class = "ttdeci" > std::vector< uint8_t > codes< / div > < div class = "ttdoc" > Codes. Size ntotal * pq.code_size. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00034" > IndexPQ.h:34< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1Index2Layer_html_a8692273ff51ab7f34748c3d5b3295216" > < div class = "ttname" > < a href = "structfaiss_1_1Index2Layer.html#a8692273ff51ab7f34748c3d5b3295216" > faiss::Index2Layer::transfer_to_IVFPQ< / a > < / div > < div class = "ttdeci" > void transfer_to_IVFPQ(IndexIVFPQ & other) const < / div > < div class = "ttdoc" > transfer the flat codes to an IVFPQ index < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8cpp_source.html#l01425" > IndexIVFPQ.cpp:1425< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1ScalarQuantizer_html_a647b8774e4cd8ca5623a194f5c7f8a33" > < div class = "ttname" > < a href = "structfaiss_1_1ScalarQuantizer.html#a647b8774e4cd8ca5623a194f5c7f8a33" > faiss::ScalarQuantizer::code_size< / a > < / div > < div class = "ttdeci" > size_t code_size< / div > < div class = "ttdoc" > bytes per vector < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexScalarQuantizer_8h_source.html#l00060" > IndexScalarQuantizer.h:60< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ScalarQuantizer_html_a1201dbd1611fa5c10782ade5d0e4952e" > < div class = "ttname" > < a href = "structfaiss_1_1ScalarQuantizer.html#a1201dbd1611fa5c10782ade5d0e4952e" > faiss::ScalarQuantizer::QuantizerType< / a > < / div > < div class = "ttdeci" > QuantizerType< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexScalarQuantizer_8h_source.html#l00032" > IndexScalarQuantizer.h:32< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexFlat_html" > < div class = "ttname" > < a href = "structfaiss_1_1IndexFlat.html" > faiss::IndexFlat< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexFlat_8h_source.html#l00023" > IndexFlat.h:23< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_aa3ae6a80d358e59e3af23f918253f61d" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#aa3ae6a80d358e59e3af23f918253f61d" > faiss::HNSW::neighbor_range< / a > < / div > < div class = "ttdeci" > void neighbor_range(idx_t no, int layer_no, size_t *begin, size_t *end) const < / div > < div class = "ttdoc" > range of entries in the neighbors table of vertex no at layer_no < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00517" > IndexHNSW.cpp:517< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_ac920fea11f02e8407d12cc99a09f5ea5" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5" > faiss::ProductQuantizer::nbits< / a > < / div > < div class = "ttdeci" > size_t nbits< / div > < div class = "ttdoc" > number of bits per quantization index < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00029" > ProductQuantizer.h:29< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1VisitedTable_html_a18a972137362ff04a38943d66fc19dcb" > < div class = "ttname" > < a href = "structfaiss_1_1VisitedTable.html#a18a972137362ff04a38943d66fc19dcb" > faiss::VisitedTable::get< / a > < / div > < div class = "ttdeci" > bool get(int no) const < / div > < div class = "ttdoc" > get flag #no < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00066" > IndexHNSW.cpp:66< / a > < / div > < / div >
< div class = "ttc" id = "namespacefaiss_html_a7466bd32de31640860393a701eaac5ad" > < div class = "ttname" > < a href = "namespacefaiss.html#a7466bd32de31640860393a701eaac5ad" > faiss::fvec_L2sqr< / a > < / div > < div class = "ttdeci" > float fvec_L2sqr(const float *x, const float *y, size_t d)< / div > < div class = "ttdoc" > Squared L2 distance between two vectors. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8cpp_source.html#l00574" > utils.cpp:574< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1SQDis_html" > < div class = "ttname" > < a href = "structfaiss_1_1SQDis.html" > faiss::SQDis< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01752" > IndexHNSW.cpp:1752< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexHNSWPQ_html_ae99b976eeb25717d10055b1786aa011c" > < div class = "ttname" > < a href = "structfaiss_1_1IndexHNSWPQ.html#ae99b976eeb25717d10055b1786aa011c" > faiss::IndexHNSWPQ::train< / a > < / div > < div class = "ttdeci" > void train(idx_t n, const float *x) override< / div > < div class = "ttdoc" > Trains the storage if needed. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01733" > IndexHNSW.cpp:1733< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1InvertedLists_html_a3ab6b389d8d85c5fbf23889064df7e95" > < div class = "ttname" > < a href = "structfaiss_1_1InvertedLists.html#a3ab6b389d8d85c5fbf23889064df7e95" > faiss::InvertedLists::get_ids< / a > < / div > < div class = "ttdeci" > virtual const idx_t * get_ids(size_t list_no) const =0< / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1CMax_html" > < div class = "ttname" > < a href = "structfaiss_1_1CMax.html" > faiss::CMax< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Heap_8h_source.html#l00048" > Heap.h:48< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_ad497ea80f352c33242ba7835370c2dba" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#ad497ea80f352c33242ba7835370c2dba" > faiss::HNSW::nb_neighbors< / a > < / div > < div class = "ttdeci" > int nb_neighbors(int layer_no) const < / div > < div class = "ttdoc" > nb of neighbors for this level < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00497" > IndexHNSW.cpp:497< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexHNSW2Level_html_a50a087a17ce5a7a1fbcca0836959b4ec" > < div class = "ttname" > < a href = "structfaiss_1_1IndexHNSW2Level.html#a50a087a17ce5a7a1fbcca0836959b4ec" > faiss::IndexHNSW2Level::search< / a > < / div > < div class = "ttdeci" > void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const override< / div > < div class = "ttdoc" > entry point for search < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l02071" > IndexHNSW.cpp:2071< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexScalarQuantizer_html" > < div class = "ttname" > < a href = "structfaiss_1_1IndexScalarQuantizer.html" > faiss::IndexScalarQuantizer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexScalarQuantizer_8h_source.html#l00099" > IndexScalarQuantizer.h:99< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1Index2Layer_html_a66403863c8ec987ed83b4d7ef4064fe9" > < div class = "ttname" > < a href = "structfaiss_1_1Index2Layer.html#a66403863c8ec987ed83b4d7ef4064fe9" > faiss::Index2Layer::code_size< / a > < / div > < div class = "ttdeci" > size_t code_size< / div > < div class = "ttdoc" > code_size_1 + code_size_2 < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8h_source.html#l00213" > IndexIVFPQ.h:213< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1Index_html_a849361f5f0ab0aba8d419c86f2594191" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a849361f5f0ab0aba8d419c86f2594191" > faiss::Index::reset< / a > < / div > < div class = "ttdeci" > virtual void reset()=0< / div > < div class = "ttdoc" > removes all elements from the database. < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a95547d97c90b361a040bae0fb0d892b4" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a95547d97c90b361a040bae0fb0d892b4" > faiss::HNSW::entry_point< / a > < / div > < div class = "ttdeci" > storage_idx_t entry_point< / div > < div class = "ttdoc" > entry point in the search structure (one of the points with maximum level < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00088" > IndexHNSW.h:88< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a49b512eaaa54ead77b564cad8e3e6ebd" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a49b512eaaa54ead77b564cad8e3e6ebd" > faiss::HNSW::cum_nb_neighbors< / a > < / div > < div class = "ttdeci" > int cum_nb_neighbors(int layer_no) const < / div > < div class = "ttdoc" > cumumlative nb up to (and excluding) this level < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00512" > IndexHNSW.cpp:512< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1PQDis_html" > < div class = "ttname" > < a href = "structfaiss_1_1PQDis.html" > faiss::PQDis< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01661" > IndexHNSW.cpp:1661< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ScalarQuantizer_1_1DistanceComputer_html_a96caf21f52fcf6591d7b6b4f3fc8a729" > < div class = "ttname" > < a href = "structfaiss_1_1ScalarQuantizer_1_1DistanceComputer.html#a96caf21f52fcf6591d7b6b4f3fc8a729" > faiss::ScalarQuantizer::DistanceComputer::compute_code_distance< / a > < / div > < div class = "ttdeci" > virtual float compute_code_distance(const uint8_t *code1, const uint8_t *code2)=0< / div > < div class = "ttdoc" > code-to-code distance computation < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html" > faiss::IndexPQ< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00028" > IndexPQ.h:28< / a > < / div > < / div >
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< div class = "ttc" id = "structfaiss_1_1IndexIVF_html_affed235eadf27a13d753ee4d33a1dc58" > < div class = "ttname" > < a href = "structfaiss_1_1IndexIVF.html#affed235eadf27a13d753ee4d33a1dc58" > faiss::IndexIVF::nprobe< / a > < / div > < div class = "ttdeci" > size_t nprobe< / div > < div class = "ttdoc" > number of probes at query time < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVF_8h_source.html#l00173" > IndexIVF.h:173< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexFlatL2_html" > < div class = "ttname" > < a href = "structfaiss_1_1IndexFlatL2.html" > faiss::IndexFlatL2< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexFlat_8h_source.html#l00079" > IndexFlat.h:79< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a907c94e0eca5200af1dc8d0aea482665" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a907c94e0eca5200af1dc8d0aea482665" > faiss::HNSW::assign_probas< / a > < / div > < div class = "ttdeci" > std::vector< double > assign_probas< / div > < div class = "ttdoc" > assignment probability to each layer (sum=1) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00070" > IndexHNSW.h:70< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a6bd65fb4407452f73acb7242931d09e4" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a6bd65fb4407452f73acb7242931d09e4" > faiss::ProductQuantizer::sdc_table< / a > < / div > < div class = "ttdeci" > std::vector< float > sdc_table< / div > < div class = "ttdoc" > Symmetric Distance Table. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00159" > ProductQuantizer.h:159< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1Index_html_abf601502bdbfa02b9d7bcd7b3671b71d" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#abf601502bdbfa02b9d7bcd7b3671b71d" > faiss::Index::train< / a > < / div > < div class = "ttdeci" > virtual void train(idx_t n, const float *x)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8cpp_source.html#l00023" > Index.cpp:23< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1DistanceXPQ4_html" > < div class = "ttname" > < a href = "structfaiss_1_1DistanceXPQ4.html" > faiss::DistanceXPQ4< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01857" > IndexHNSW.cpp:1857< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1RandomGenerator_html_ac82a433d7bfa56d750907ba5cf74aed7" > < div class = "ttname" > < a href = "structfaiss_1_1RandomGenerator.html#ac82a433d7bfa56d750907ba5cf74aed7" > faiss::RandomGenerator::rand_float< / a > < / div > < div class = "ttdeci" > float rand_float()< / div > < div class = "ttdoc" > between 0 and 1 < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8cpp_source.html#l00211" > utils.cpp:211< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ScopeDeleter1_html" > < div class = "ttname" > < a href = "structfaiss_1_1ScopeDeleter1.html" > faiss::ScopeDeleter1< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "FaissException_8h_source.html#l00052" > FaissException.h:52< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a1c258bb88aae9b1a754ab4690d85ed41" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a1c258bb88aae9b1a754ab4690d85ed41" > faiss::HNSW::cum_nneighbor_per_level< / a > < / div > < div class = "ttdeci" > std::vector< int > cum_nneighbor_per_level< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00074" > IndexHNSW.h:74< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ScopeDeleter_html" > < div class = "ttname" > < a href = "structfaiss_1_1ScopeDeleter.html" > faiss::ScopeDeleter< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "FaissException_8h_source.html#l00039" > FaissException.h:39< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Distance2Level_html" > < div class = "ttname" > < a href = "structfaiss_1_1Distance2Level.html" > faiss::Distance2Level< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01825" > IndexHNSW.cpp:1825< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a467b451ca203544e42c250e4be65b983" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a467b451ca203544e42c250e4be65b983" > faiss::ProductQuantizer::dsub< / a > < / div > < div class = "ttdeci" > size_t dsub< / div > < div class = "ttdoc" > dimensionality of each subvector < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00032" > ProductQuantizer.h:32< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1Index2Layer_html_a5f2d70740af90b8c7ac946d58ec947aa" > < div class = "ttname" > < a href = "structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa" > faiss::Index2Layer::q1< / a > < / div > < div class = "ttdeci" > Level1Quantizer q1< / div > < div class = "ttdoc" > first level quantizer < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8h_source.html#l00198" > IndexIVFPQ.h:198< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index2Layer_html_a8e6bcfa690ac5ab1636b3d89b144f2d9" > < div class = "ttname" > < a href = "structfaiss_1_1Index2Layer.html#a8e6bcfa690ac5ab1636b3d89b144f2d9" > faiss::Index2Layer::codes< / a > < / div > < div class = "ttdeci" > std::vector< uint8_t > codes< / div > < div class = "ttdoc" > Codes. Size ntotal * code_size. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8h_source.html#l00204" > IndexIVFPQ.h:204< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1ScalarQuantizer_html" > < div class = "ttname" > < a href = "structfaiss_1_1ScalarQuantizer.html" > faiss::ScalarQuantizer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexScalarQuantizer_8h_source.html#l00030" > IndexScalarQuantizer.h:30< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1VisitedTable_html_a76223893c8c3a577473092b3bb8a2446" > < div class = "ttname" > < a href = "structfaiss_1_1VisitedTable.html#a76223893c8c3a577473092b3bb8a2446" > faiss::VisitedTable::advance< / a > < / div > < div class = "ttdeci" > void advance()< / div > < div class = "ttdoc" > reset all flags to false < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00070" > IndexHNSW.cpp:70< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1Index2Layer_html" > < div class = "ttname" > < a href = "structfaiss_1_1Index2Layer.html" > faiss::Index2Layer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8h_source.html#l00196" > IndexIVFPQ.h:196< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1ReconstructFromNeighbors_html_aed256bdd9f48dc93cb9e33cfdfd5bde7" > < div class = "ttname" > < a href = "structfaiss_1_1ReconstructFromNeighbors.html#aed256bdd9f48dc93cb9e33cfdfd5bde7" > faiss::ReconstructFromNeighbors::get_neighbor_table< / a > < / div > < div class = "ttdeci" > void get_neighbor_table(storage_idx_t i, float *out) const < / div > < div class = "ttdoc" > get the M+1 -by-d table for neighbor coordinates for vector i < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01512" > IndexHNSW.cpp:1512< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Distance2Level_html_aaae1348a619161ba59ff854b941137da" > < div class = "ttname" > < a href = "structfaiss_1_1Distance2Level.html#aaae1348a619161ba59ff854b941137da" > faiss::Distance2Level::set_query< / a > < / div > < div class = "ttdeci" > void set_query(const float *x) override< / div > < div class = "ttdoc" > called before computing distances < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01848" > IndexHNSW.cpp:1848< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexHNSW_html_a40bc6d2c67545f95e322c63d68a47140" > < div class = "ttname" > < a href = "structfaiss_1_1IndexHNSW.html#a40bc6d2c67545f95e322c63d68a47140" > faiss::IndexHNSW::train< / a > < / div > < div class = "ttdeci" > void train(idx_t n, const float *x) override< / div > < div class = "ttdoc" > Trains the storage if needed. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00978" > IndexHNSW.cpp:978< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_a2a002388d2c081c2dbab8508dcefe73d" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > faiss::Index::d< / a > < / div > < div class = "ttdeci" > int d< / div > < div class = "ttdoc" > vector dimension < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00064" > Index.h:64< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a36361f41bcd2fa698f3c39eb7111ed09" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a36361f41bcd2fa698f3c39eb7111ed09" > faiss::ProductQuantizer::compute_distance_table< / a > < / div > < div class = "ttdeci" > void compute_distance_table(const float *x, float *dis_table) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8cpp_source.html#l00411" > ProductQuantizer.cpp:411< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_aa61330eadb84772b71018b093773a5f9" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > faiss::ProductQuantizer::code_size< / a > < / div > < div class = "ttdeci" > size_t code_size< / div > < div class = "ttdoc" > byte per indexed vector < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00034" > ProductQuantizer.h:34< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a0b456c521194903b29ce7c157539d771" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a0b456c521194903b29ce7c157539d771" > faiss::HNSW::offsets< / a > < / div > < div class = "ttdeci" > std::vector< size_t > offsets< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00081" > IndexHNSW.h:81< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexScalarQuantizer_html_a861fa059f9d4ced9147e08193a2be9be" > < div class = "ttname" > < a href = "structfaiss_1_1IndexScalarQuantizer.html#a861fa059f9d4ced9147e08193a2be9be" > faiss::IndexScalarQuantizer::codes< / a > < / div > < div class = "ttdeci" > std::vector< uint8_t > codes< / div > < div class = "ttdoc" > Codes. Size ntotal * pq.code_size. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexScalarQuantizer_8h_source.html#l00104" > IndexScalarQuantizer.h:104< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1VisitedTable_html" > < div class = "ttname" > < a href = "structfaiss_1_1VisitedTable.html" > faiss::VisitedTable< / a > < / div > < div class = "ttdoc" > set implementation optimized for fast access. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00054" > IndexHNSW.cpp:54< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexIVFPQ_html" > < div class = "ttname" > < a href = "structfaiss_1_1IndexIVFPQ.html" > faiss::IndexIVFPQ< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8h_source.html#l00029" > IndexIVFPQ.h:29< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexHNSW_html_a04a761ce17d0f9040b3bc8a77bd627d9" > < div class = "ttname" > < a href = "structfaiss_1_1IndexHNSW.html#a04a761ce17d0f9040b3bc8a77bd627d9" > faiss::IndexHNSW::add< / a > < / div > < div class = "ttdeci" > void add(idx_t n, const float *x) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01031" > IndexHNSW.cpp:1031< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1SQDis_html_a67cd2b8275b5983de5709ec4767feb13" > < div class = "ttname" > < a href = "structfaiss_1_1SQDis.html#a67cd2b8275b5983de5709ec4767feb13" > faiss::SQDis::set_query< / a > < / div > < div class = "ttdeci" > void set_query(const float *x) override< / div > < div class = "ttdoc" > called before computing distances < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01785" > IndexHNSW.cpp:1785< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ScalarQuantizer_1_1DistanceComputer_html" > < div class = "ttname" > < a href = "structfaiss_1_1ScalarQuantizer_1_1DistanceComputer.html" > faiss::ScalarQuantizer::DistanceComputer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexScalarQuantizer_8h_source.html#l00081" > IndexScalarQuantizer.h:81< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ReconstructFromNeighbors_html_a6cf260c530e273e4d676804ac71128f8" > < div class = "ttname" > < a href = "structfaiss_1_1ReconstructFromNeighbors.html#a6cf260c530e273e4d676804ac71128f8" > faiss::ReconstructFromNeighbors::reconstruct< / a > < / div > < div class = "ttdeci" > void reconstruct(storage_idx_t i, float *x, float *tmp) const < / div > < div class = "ttdoc" > called by compute_distances < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01378" > IndexHNSW.cpp:1378< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_a1b5e9ac70adbce0897dd6c8276ad96f2" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a1b5e9ac70adbce0897dd6c8276ad96f2" > faiss::Index::add< / a > < / div > < div class = "ttdeci" > virtual void add(idx_t n, const float *x)=0< / div > < / div >
< div class = "ttc" id = "structfaiss_1_1RandomGenerator_html_a583f124ecacdbe037ac96e23a44dd420" > < div class = "ttname" > < a href = "structfaiss_1_1RandomGenerator.html#a583f124ecacdbe037ac96e23a44dd420" > faiss::RandomGenerator::rand_int< / a > < / div > < div class = "ttdeci" > int rand_int()< / div > < div class = "ttdoc" > random 31-bit positive integer < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexScalarQuantizer_html_a71381f74754d8a54812e80af46a2a83a" > < div class = "ttname" > < a href = "structfaiss_1_1IndexScalarQuantizer.html#a71381f74754d8a54812e80af46a2a83a" > faiss::IndexScalarQuantizer::sq< / a > < / div > < div class = "ttdeci" > ScalarQuantizer sq< / div > < div class = "ttdoc" > Used to encode the vectors. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexScalarQuantizer_8h_source.html#l00101" > IndexScalarQuantizer.h:101< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a0feee45e4151547b7a0444c14bad398f" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > faiss::ProductQuantizer::ksub< / a > < / div > < div class = "ttdeci" > size_t ksub< / div > < div class = "ttdoc" > number of centroids for each subquantizer < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00035" > ProductQuantizer.h:35< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a6d1cb35c4220bf554af90133c71ae04f" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a6d1cb35c4220bf554af90133c71ae04f" > faiss::HNSW::efSearch< / a > < / div > < div class = "ttdeci" > int efSearch< / div > < div class = "ttdoc" > expansion factor at search time < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00099" > IndexHNSW.h:99< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_a040c6aed1f224f3ea7bf58eebc0c31a4" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > faiss::Index::idx_t< / a > < / div > < div class = "ttdeci" > long idx_t< / div > < div class = "ttdoc" > all indices are this type < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00062" > Index.h:62< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_adbf81f0b21102b942182c904892e0858" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#adbf81f0b21102b942182c904892e0858" > faiss::HNSW::check_relative_distance< / a > < / div > < div class = "ttdeci" > bool check_relative_distance< / div > < div class = "ttdoc" > during search: do we check whether the next best distance is good enough? < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00102" > IndexHNSW.h:102< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a1fc852810a2497a8eb2c41635ec05520" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a1fc852810a2497a8eb2c41635ec05520" > faiss::HNSW::HNSW< / a > < / div > < div class = "ttdeci" > HNSW(int M=32)< / div > < div class = "ttdoc" > only mandatory parameter: nb of neighbors < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00527" > IndexHNSW.cpp:527< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_aa7b7cfe0c8dfd37c8a940fd93d12dc88" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > faiss::IndexPQ::pq< / a > < / div > < div class = "ttdeci" > ProductQuantizer pq< / div > < div class = "ttdoc" > The product quantizer used to encode the vectors. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00031" > IndexPQ.h:31< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_a6970683faa021b7a6f1a0865c0d4eccd" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > faiss::Index::ntotal< / a > < / div > < div class = "ttdeci" > idx_t ntotal< / div > < div class = "ttdoc" > total nb of indexed vectors < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00065" > Index.h:65< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a857bef0db2dc0000f312cc8a95f857b2" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a857bef0db2dc0000f312cc8a95f857b2" > faiss::HNSW::upper_beam< / a > < / div > < div class = "ttdeci" > int upper_beam< / div > < div class = "ttdoc" > number of entry points in levels & gt; 0. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00105" > IndexHNSW.h:105< / a > < / div > < / div >
< div class = "ttc" id = "namespacefaiss_html_af2a71f7d5402ae02ce169a4cc83020eb" > < div class = "ttname" > < a href = "namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb" > faiss::getmillisecs< / a > < / div > < div class = "ttdeci" > double getmillisecs()< / div > < div class = "ttdoc" > ms elapsed since some arbitrary epoch < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8cpp_source.html#l00074" > utils.cpp:74< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_afdb5a17487296267efaaa94e6a08996d" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#afdb5a17487296267efaaa94e6a08996d" > faiss::HNSW::set_nb_neighbors< / a > < / div > < div class = "ttdeci" > void set_nb_neighbors(int level_no, int n)< / div > < div class = "ttdoc" > set nb of neighbors for this level (before adding anything) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00503" > IndexHNSW.cpp:503< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ReconstructFromNeighbors_html_a88ca99742dccc52ebb3324b507b6c872" > < div class = "ttname" > < a href = "structfaiss_1_1ReconstructFromNeighbors.html#a88ca99742dccc52ebb3324b507b6c872" > faiss::ReconstructFromNeighbors::estimate_code< / a > < / div > < div class = "ttdeci" > void estimate_code(const float *x, storage_idx_t i, uint8_t *code) const < / div > < div class = "ttdoc" > called by add_codes < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01531" > IndexHNSW.cpp:1531< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_aced51b1ebc33c47ab3ae15ea906559a7" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7" > faiss::Index::search< / a > < / div > < div class = "ttdeci" > virtual void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const =0< / div > < / div >
< div class = "ttc" id = "structfaiss_1_1MultiIndexQuantizer_html" > < div class = "ttname" > < a href = "structfaiss_1_1MultiIndexQuantizer.html" > faiss::MultiIndexQuantizer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00135" > IndexPQ.h:135< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html" > faiss::HNSW< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00040" > IndexHNSW.h:40< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a153fa41ad41a4905aa60683360a3cdf0" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a153fa41ad41a4905aa60683360a3cdf0" > faiss::HNSW::idx_t< / a > < / div > < div class = "ttdeci" > faiss::Index::idx_t idx_t< / div > < div class = "ttdoc" > Faiss results are 64-bit. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00046" > IndexHNSW.h:46< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ReconstructFromNeighbors_html_a454b7a5f7437a257df7404f5778fc833" > < div class = "ttname" > < a href = "structfaiss_1_1ReconstructFromNeighbors.html#a454b7a5f7437a257df7404f5778fc833" > faiss::ReconstructFromNeighbors::add_codes< / a > < / div > < div class = "ttdeci" > void add_codes(size_t n, const float *x)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01572" > IndexHNSW.cpp:1572< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexIVF_html_a1c11ce77f459e2ab3e5d9a4c2263ad89" > < div class = "ttname" > < a href = "structfaiss_1_1IndexIVF.html#a1c11ce77f459e2ab3e5d9a4c2263ad89" > faiss::IndexIVF::make_direct_map< / a > < / div > < div class = "ttdeci" > void make_direct_map(bool new_maintain_direct_map=true)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVF_8cpp_source.html#l00257" > IndexIVF.cpp:257< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1GenericDistanceComputer_html_a07cbd7cd0ed73eae3d0487f2f25b748c" > < div class = "ttname" > < a href = "structfaiss_1_1GenericDistanceComputer.html#a07cbd7cd0ed73eae3d0487f2f25b748c" > faiss::GenericDistanceComputer::set_query< / a > < / div > < div class = "ttdeci" > void set_query(const float *x) override< / div > < div class = "ttdoc" > called before computing distances < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01347" > IndexHNSW.cpp:1347< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_aa6dfdaed7bc0ad895774315166fcb197" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#aa6dfdaed7bc0ad895774315166fcb197" > faiss::HNSW::random_level< / a > < / div > < div class = "ttdeci" > int random_level()< / div > < div class = "ttdoc" > pick a random level for a new point < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00539" > IndexHNSW.cpp:539< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_ae7d955690da5d6376c203e81e124ba94" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#ae7d955690da5d6376c203e81e124ba94" > faiss::HNSW::set_default_probas< / a > < / div > < div class = "ttdeci" > void set_default_probas(int M, float levelMult)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00553" > IndexHNSW.cpp:553< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexIVFPQ_html_a007303be116c8da65b6d058e3fc77d16" > < div class = "ttname" > < a href = "structfaiss_1_1IndexIVFPQ.html#a007303be116c8da65b6d058e3fc77d16" > faiss::IndexIVFPQ::pq< / a > < / div > < div class = "ttdeci" > ProductQuantizer pq< / div > < div class = "ttdoc" > produces the codes < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8h_source.html#l00032" > IndexIVFPQ.h:32< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexIVF_html_aa0e8fc5e04cbd8e0dde61f98bc7dd0bc" > < div class = "ttname" > < a href = "structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc" > faiss::IndexIVF::invlists< / a > < / div > < div class = "ttdeci" > InvertedLists * invlists< / div > < div class = "ttdoc" > Acess to the actual data. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVF_8h_source.html#l00168" > IndexIVF.h:168< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexHNSW_html_ad4b9f97d42e2521e01f8b60012985396" > < div class = "ttname" > < a href = "structfaiss_1_1IndexHNSW.html#ad4b9f97d42e2521e01f8b60012985396" > faiss::IndexHNSW::reset< / a > < / div > < div class = "ttdeci" > void reset() override< / div > < div class = "ttdoc" > removes all elements from the database. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01043" > IndexHNSW.cpp:1043< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a83600e328893ce5f41fe459f5a3acf41" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > faiss::ProductQuantizer::M< / a > < / div > < div class = "ttdeci" > size_t M< / div > < div class = "ttdoc" > number of subquantizers < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00028" > ProductQuantizer.h:28< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1Index2Layer_html_a735b2b6cc50e4186776a8213d2679837" > < div class = "ttname" > < a href = "structfaiss_1_1Index2Layer.html#a735b2b6cc50e4186776a8213d2679837" > faiss::Index2Layer::code_size_1< / a > < / div > < div class = "ttdeci" > size_t code_size_1< / div > < div class = "ttdoc" > size of the code for the first level (ceil(log8(q1.nlist))) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8h_source.html#l00207" > IndexIVFPQ.h:207< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a330107a5801680609932849fc9404594" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a330107a5801680609932849fc9404594" > faiss::HNSW::search< / a > < / div > < div class = "ttdeci" > void search(DistanceComputer & qdis, int k, idx_t *I, float *D, VisitedTable & vt) const < / div > < div class = "ttdoc" > search interface < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00711" > IndexHNSW.cpp:711< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html" > faiss::Index< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00060" > Index.h:60< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1GenericDistanceComputer_html" > < div class = "ttname" > < a href = "structfaiss_1_1GenericDistanceComputer.html" > faiss::GenericDistanceComputer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01322" > IndexHNSW.cpp:1322< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexHNSW_html_ab9c75063090927f8f65d1896b6949af4" > < div class = "ttname" > < a href = "structfaiss_1_1IndexHNSW.html#ab9c75063090927f8f65d1896b6949af4" > faiss::IndexHNSW::init_level_0_from_entry_points< / a > < / div > < div class = "ttdeci" > void init_level_0_from_entry_points(int npt, const storage_idx_t *points, const storage_idx_t *nearests)< / div > < div class = "ttdoc" > alternative graph building < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01200" > IndexHNSW.cpp:1200< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1FlatL2Dis_html_a9982374debdda67f3db647ffc0d3fc4b" > < div class = "ttname" > < a href = "structfaiss_1_1FlatL2Dis.html#a9982374debdda67f3db647ffc0d3fc4b" > faiss::FlatL2Dis::set_query< / a > < / div > < div class = "ttdeci" > void set_query(const float *x) override< / div > < div class = "ttdoc" > called before computing distances < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01621" > IndexHNSW.cpp:1621< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexHNSW_html_ae0ddf6ab4a54239a25d6277e21e8548e" > < div class = "ttname" > < a href = "structfaiss_1_1IndexHNSW.html#ae0ddf6ab4a54239a25d6277e21e8548e" > faiss::IndexHNSW::search< / a > < / div > < div class = "ttdeci" > void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const override< / div > < div class = "ttdoc" > entry point for search < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00985" > IndexHNSW.cpp:985< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexIVFPQ_html_a150a37cf3e8a7e37cb8dab1d5678bc02" > < div class = "ttname" > < a href = "structfaiss_1_1IndexIVFPQ.html#a150a37cf3e8a7e37cb8dab1d5678bc02" > faiss::IndexIVFPQ::search_preassigned< / a > < / div > < div class = "ttdeci" > void search_preassigned(idx_t n, const float *x, idx_t k, const idx_t *assign, const float *centroid_dis, float *distances, idx_t *labels, bool store_pairs) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8cpp_source.html#l00930" > IndexIVFPQ.cpp:930< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1Level1Quantizer_html_a3cf99e2ee92b8558a066f821efab95d5" > < div class = "ttname" > < a href = "structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5" > faiss::Level1Quantizer::quantizer< / a > < / div > < div class = "ttdeci" > Index * quantizer< / div > < div class = "ttdoc" > quantizer that maps vectors to inverted lists < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVF_8h_source.html#l00033" > IndexIVF.h:33< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexHNSW_html_a9a86c58212f3f9cf88394f5297cba525" > < div class = "ttname" > < a href = "structfaiss_1_1IndexHNSW.html#a9a86c58212f3f9cf88394f5297cba525" > faiss::IndexHNSW::init_level_0_from_knngraph< / a > < / div > < div class = "ttdeci" > void init_level_0_from_knngraph(int k, const float *D, const idx_t *I)< / div > < div class = "ttdoc" > alternative graph building < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01162" > IndexHNSW.cpp:1162< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html" > faiss::ProductQuantizer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00025" > ProductQuantizer.h:25< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexHNSW_html_a5b619a41ddd52f0377efb701829c1e43" > < div class = "ttname" > < a href = "structfaiss_1_1IndexHNSW.html#a5b619a41ddd52f0377efb701829c1e43" > faiss::IndexHNSW::search_level_0< / a > < / div > < div class = "ttdeci" > void search_level_0(idx_t n, const float *x, idx_t k, const storage_idx_t *nearest, const float *nearest_d, float *distances, idx_t *labels, int nprobe=1, int search_type=1) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01092" > IndexHNSW.cpp:1092< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a26710980aaca3c1c8729e5e055a42ebe" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a26710980aaca3c1c8729e5e055a42ebe" > faiss::HNSW::fill_with_random_links< / a > < / div > < div class = "ttdeci" > void fill_with_random_links(size_t n)< / div > < div class = "ttdoc" > add n random levels to table (for debugging...) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00913" > IndexHNSW.cpp:913< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_a6e92732617c4dbe364e7678dd8773a7f" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > faiss::Index::is_trained< / a > < / div > < div class = "ttdeci" > bool is_trained< / div > < div class = "ttdoc" > set if the Index does not require training, or if training is done already < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00069" > Index.h:69< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a27bd11ef9a651a94bcefa5291336fc58" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a27bd11ef9a651a94bcefa5291336fc58" > faiss::HNSW::neighbors< / a > < / div > < div class = "ttdeci" > std::vector< storage_idx_t > neighbors< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00085" > IndexHNSW.h:85< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexHNSW_html_a660e5c8de1ba9c71bf3fe1f3bf0c8812" > < div class = "ttname" > < a href = "structfaiss_1_1IndexHNSW.html#a660e5c8de1ba9c71bf3fe1f3bf0c8812" > faiss::IndexHNSW::reconstruct< / a > < / div > < div class = "ttdeci" > void reconstruct(idx_t key, float *recons) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01050" > IndexHNSW.cpp:1050< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1FlatL2Dis_html" > < div class = "ttname" > < a href = "structfaiss_1_1FlatL2Dis.html" > faiss::FlatL2Dis< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01594" > IndexHNSW.cpp:1594< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_aaef6f4132b1f390121ebb11058baf190" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#aaef6f4132b1f390121ebb11058baf190" > faiss::Index::reconstruct< / a > < / div > < div class = "ttdeci" > virtual void reconstruct(idx_t key, float *recons) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8cpp_source.html#l00054" > Index.cpp:54< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1Index2Layer_html_ab90d1de73cbc705a347cfc852ded6006" > < div class = "ttname" > < a href = "structfaiss_1_1Index2Layer.html#ab90d1de73cbc705a347cfc852ded6006" > faiss::Index2Layer::pq< / a > < / div > < div class = "ttdeci" > ProductQuantizer pq< / div > < div class = "ttdoc" > second level quantizer is always a PQ < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8h_source.html#l00201" > IndexIVFPQ.h:201< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1HNSW_html_aa7309dd7826761def38233c8bbbc0c63" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#aa7309dd7826761def38233c8bbbc0c63" > faiss::HNSW::efConstruction< / a > < / div > < div class = "ttdeci" > int efConstruction< / div > < div class = "ttdoc" > expansion factor at construction time < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00096" > IndexHNSW.h:96< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_ae1342fc2f07c325598a73b733e88ee74" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#ae1342fc2f07c325598a73b733e88ee74" > faiss::HNSW::storage_idx_t< / a > < / div > < div class = "ttdeci" > int storage_idx_t< / div > < div class = "ttdoc" > internal storage of vectors (32 bits: this is expensive) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00043" > IndexHNSW.h:43< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_1_1DistanceComputer_html" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW_1_1DistanceComputer.html" > faiss::HNSW::DistanceComputer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00052" > IndexHNSW.h:52< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexFlat_html_a9001de47890fe5d2eced9551d3613d47" > < div class = "ttname" > < a href = "structfaiss_1_1IndexFlat.html#a9001de47890fe5d2eced9551d3613d47" > faiss::IndexFlat::xb< / a > < / div > < div class = "ttdeci" > std::vector< float > xb< / div > < div class = "ttdoc" > database vectors, size ntotal * d < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexFlat_8h_source.html#l00025" > IndexFlat.h:25< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Level1Quantizer_html_ab688c629cd42122d73517078b87f483d" > < div class = "ttname" > < a href = "structfaiss_1_1Level1Quantizer.html#ab688c629cd42122d73517078b87f483d" > faiss::Level1Quantizer::own_fields< / a > < / div > < div class = "ttdeci" > bool own_fields< / div > < div class = "ttdoc" > whether object owns the quantizer < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVF_8h_source.html#l00042" > IndexIVF.h:42< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1VisitedTable_html_a387b6428f4bfa44495c70a5f1f45f853" > < div class = "ttname" > < a href = "structfaiss_1_1VisitedTable.html#a387b6428f4bfa44495c70a5f1f45f853" > faiss::VisitedTable::set< / a > < / div > < div class = "ttdeci" > void set(int no)< / div > < div class = "ttdoc" > set flog #no to true < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l00062" > IndexHNSW.cpp:62< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Distance2xXPQ4_html" > < div class = "ttname" > < a href = "structfaiss_1_1Distance2xXPQ4.html" > faiss::Distance2xXPQ4< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01902" > IndexHNSW.cpp:1902< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1PQDis_html_a3f19b9d5375526901e16f88a9b310e03" > < div class = "ttname" > < a href = "structfaiss_1_1PQDis.html#a3f19b9d5375526901e16f88a9b310e03" > faiss::PQDis::set_query< / a > < / div > < div class = "ttdeci" > void set_query(const float *x) override< / div > < div class = "ttdoc" > called before computing distances < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8cpp_source.html#l01712" > IndexHNSW.cpp:1712< / a > < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1Index2Layer_html_af2e505c14e62234eb251fcb37ef012d2" > < div class = "ttname" > < a href = "structfaiss_1_1Index2Layer.html#af2e505c14e62234eb251fcb37ef012d2" > faiss::Index2Layer::reconstruct< / a > < / div > < div class = "ttdeci" > void reconstruct(idx_t key, float *recons) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8cpp_source.html#l01447" > IndexIVFPQ.cpp:1447< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
< div class = "ttc" id = "structfaiss_1_1HNSW_html_a44847954c98957404829182c7db1b8af" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#a44847954c98957404829182c7db1b8af" > faiss::HNSW::levels< / a > < / div > < div class = "ttdeci" > std::vector< int > levels< / div > < div class = "ttdoc" > level of each vector (base level = 1), size = ntotal < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00077" > IndexHNSW.h:77< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HNSW_html_afba18a290f5f759a8a7a64ed35b950eb" > < div class = "ttname" > < a href = "structfaiss_1_1HNSW.html#afba18a290f5f759a8a7a64ed35b950eb" > faiss::HNSW::max_level< / a > < / div > < div class = "ttdeci" > int max_level< / div > < div class = "ttdoc" > maximum level < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexHNSW_8h_source.html#l00093" > IndexHNSW.h:93< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Level1Quantizer_html_a1c4fc9d874d9492ee0ea27a5be388fa7" > < div class = "ttname" > < a href = "structfaiss_1_1Level1Quantizer.html#a1c4fc9d874d9492ee0ea27a5be388fa7" > faiss::Level1Quantizer::nlist< / a > < / div > < div class = "ttdeci" > size_t nlist< / div > < div class = "ttdoc" > number of possible key values < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVF_8h_source.html#l00034" > IndexIVF.h:34< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ScalarQuantizer_1_1DistanceComputer_html_a6776bc6fc6c48335f132afa4ac38df33" > < div class = "ttname" > < a href = "structfaiss_1_1ScalarQuantizer_1_1DistanceComputer.html#a6776bc6fc6c48335f132afa4ac38df33" > faiss::ScalarQuantizer::DistanceComputer::compute_distance< / a > < / div > < div class = "ttdeci" > virtual float compute_distance(const float *x, const uint8_t *code)=0< / div > < div class = "ttdoc" > vector-to-code distance computation < / div > < / div >
2018-02-23 23:44:31 +08:00
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_aab1109a29ba0544358e274d727b23cae" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#aab1109a29ba0544358e274d727b23cae" > faiss::ProductQuantizer::centroids< / a > < / div > < div class = "ttdeci" > std::vector< float > centroids< / div > < div class = "ttdoc" > Centroid table, size M * ksub * dsub. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00056" > ProductQuantizer.h:56< / a > < / div > < / div >
2018-01-09 22:44:43 +08:00
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