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2017-02-23 06:26:44 +08:00
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2017-03-21 01:33:21 +08:00
< div class = "title" > /data/users/matthijs/github_faiss/faiss/IndexPQ.cpp< / div > < / div >
2017-02-23 06:26:44 +08:00
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< div class = "fragment" > < div class = "line" > < a name = "l00001" > < / a > < span class = "lineno" > 1< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00002" > < / a > < span class = "lineno" > 2< / span >   < span class = "comment" > /**< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > * Copyright (c) 2015-present, Facebook, Inc.< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < span class = "comment" > * All rights reserved.< / span > < / div >
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< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < span class = "comment" > * This source code is licensed under the CC-by-NC license found in the< / span > < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "comment" > * LICENSE file in the root directory of this source tree.< / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "comment" > /* Copyright 2004-present Facebook. All Rights Reserved.< / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "comment" > Index based on product quantiztion.< / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include " IndexPQ.h" < / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "preprocessor" > #include < cstddef> < / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "preprocessor" > #include < cstring> < / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "preprocessor" > #include < cstdio> < / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "preprocessor" > #include < algorithm> < / span > < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "preprocessor" > #include " FaissAssert.h" < / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "preprocessor" > #include " hamming.h" < / span > < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "keyword" > namespace < / span > faiss {< / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "comment" > /*********************************************************< / span > < / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < span class = "comment" > * IndexPQ implementation< / span > < / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "comment" > ********************************************************/< / span > < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPQ.html#ab8d0bbf8a0dab39b236e0d1633923746" > 33< / a > < / span >   IndexPQ::IndexPQ (< span class = "keywordtype" > int< / span > d, < span class = "keywordtype" > size_t< / span > M, < span class = "keywordtype" > size_t< / span > nbits, < a class = "code" href = "namespacefaiss.html#afd12191c638da74760ff397cf319752c" > MetricType< / a > metric):< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < a class = "code" href = "structfaiss_1_1Index.html" > Index< / a > (d, metric), pq(d, M, nbits)< / 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 >   < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#af616e1f3c7bff7f62c2607b8079da43f" > do_polysemous_training< / a > = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   set_typename();< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aff455f2adff6064939494dad6e3017bc" > polysemous_ht< / a > = nbits * M + 1;< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   search_type = < a class = "code" href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea00f77a4f8209c30c3ef37ccfd3d0c10a" > ST_PQ< / a > ;< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   encode_signs = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   }< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   IndexPQ::IndexPQ ()< / 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 >   < a class = "code" href = "structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e" > metric_type< / a > = METRIC_L2;< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#af616e1f3c7bff7f62c2607b8079da43f" > do_polysemous_training< / a > = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   set_typename();< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aff455f2adff6064939494dad6e3017bc" > polysemous_ht< / a > = < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5" > nbits< / a > * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > + 1;< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   search_type = < a class = "code" href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea00f77a4f8209c30c3ef37ccfd3d0c10a" > ST_PQ< / a > ;< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   encode_signs = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   }< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "keywordtype" > void< / span > IndexPQ::set_typename ()< / 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 >   std::stringstream s;< / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   s < < < span class = "stringliteral" > " PQ_" < / span > < < < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > < < < span class = "stringliteral" > " x" < / span > < < < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5" > nbits< / a > ;< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   index_typename = s.str();< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   }< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPQ.html#a87898add5ab4d86ba901ca79778fc11e" > 64< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPQ.html#a87898add5ab4d86ba901ca79778fc11e" > IndexPQ::train< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   {< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "keywordflow" > if< / span > (!< a class = "code" href = "structfaiss_1_1IndexPQ.html#af616e1f3c7bff7f62c2607b8079da43f" > do_polysemous_training< / a > ) { < span class = "comment" > // standard training< / span > < / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .train(n, x);< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > ntrain_perm = < a class = "code" href = "structfaiss_1_1IndexPQ.html#a820cec27d1ef14bf59fb288b2e143b6a" > polysemous_training< / a > .ntrain_permutation;< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < span class = "keywordflow" > if< / span > (ntrain_perm > n / 4)< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   ntrain_perm = n / 4;< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23" > verbose< / a > ) {< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   printf (< span class = "stringliteral" > " PQ training on %ld points, remains %ld points: " < / span > < / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < span class = "stringliteral" > " training polysemous on %s\n" < / span > ,< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   n - ntrain_perm, ntrain_perm,< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   ntrain_perm == 0 ? < span class = "stringliteral" > " centroids" < / span > : < span class = "stringliteral" > " these" < / 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 >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .train(n - ntrain_perm, x);< / 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 >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#a820cec27d1ef14bf59fb288b2e143b6a" > polysemous_training< / a > .< a class = "code" href = "structfaiss_1_1PolysemousTraining.html#a995374ba2f0bc2738edae72ca9142f82" > optimize_pq_for_hamming< / a > (< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > , ntrain_perm, x + (n - ntrain_perm) * < a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > );< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   }< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   }< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   < / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPQ.html#ac72c9b93f8fe7e5ec27fbe26bb38a7bf" > 88< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPQ.html#ac72c9b93f8fe7e5ec27fbe26bb38a7bf" > IndexPQ::add< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   {< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   FAISS_ASSERT (< a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > );< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > .resize ((n + < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ) * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > );< / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ae5a340ee5a4b1d35a565b167de2a2ef1" > compute_codes< / a > (x, & < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > [< a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ], n);< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   ntotal += n;< / 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 >   < / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPQ.html#a25e17da885cf55d84b176b46f3ad25b1" > 98< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPQ.html#a25e17da885cf55d84b176b46f3ad25b1" > IndexPQ::reset< / a > ()< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   {< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > .clear();< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > = 0;< / 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 >   < / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPQ.html#a99b187b1231a700617f7b228ec348ade" > 104< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPQ.html#a99b187b1231a700617f7b228ec348ade" > IndexPQ::reconstruct_n< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > i0, < a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > ni, < span class = "keywordtype" > float< / span > *recons)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   FAISS_ASSERT (ni == 0 || (i0 > = 0 & & i0 + ni < = < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ));< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > i = 0; i < ni; i++) {< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < span class = "keyword" > const< / span > uint8_t * code = & < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > [(i0 + i) * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ];< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a7afbf9d96276f021981e99f064254208" > decode< / a > (code, recons + i * < a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > );< / 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 >   }< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPQ.html#a20913df3bfd8caa5187112641e8d9bc7" > 114< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPQ.html#a20913df3bfd8caa5187112641e8d9bc7" > IndexPQ::reconstruct< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > key, < span class = "keywordtype" > float< / span > * recons)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   FAISS_ASSERT (key > = 0 & & key < < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > );< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a7afbf9d96276f021981e99f064254208" > decode< / a > (& < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > [key * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ], recons);< / 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 >   < / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < / 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 >   < / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   < / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < span class = "comment" > /*****************************************< / span > < / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "comment" > * IndexPQ polysemous search routines< / span > < / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   < span class = "comment" > ******************************************/< / span > < / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   < / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   < / 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 >   < / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPQ.html#a491ba3ed34093513e6a850fbca0abdd2" > 134< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPQ.html#a491ba3ed34093513e6a850fbca0abdd2" > IndexPQ::search< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x, < a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > k,< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   < span class = "keywordtype" > float< / span > *distances, < a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > *labels)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   FAISS_ASSERT (< a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > );< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   < span class = "keywordflow" > if< / span > (search_type == < a class = "code" href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea00f77a4f8209c30c3ef37ccfd3d0c10a" > ST_PQ< / a > ) { < span class = "comment" > // Simple PQ search< / span > < / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   < / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e" > metric_type< / a > == METRIC_L2) {< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < a class = "code" href = "structfaiss_1_1HeapArray.html" > float_maxheap_array_t< / a > res = {< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   size_t(n), size_t(k), labels, distances };< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a1ae7892a15b9f6809a3ba1a123a7831b" > search< / a > (x, n, < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > .data(), < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > , & res, < span class = "keyword" > true< / span > );< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < a class = "code" href = "structfaiss_1_1HeapArray.html" > float_minheap_array_t< / a > res = {< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   size_t(n), size_t(k), labels, distances };< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a66be226806ca2abcaaf1653cdc690aa6" > search_ip< / a > (x, n, < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > .data(), < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > , & res, < span class = "keyword" > true< / span > );< / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   }< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   indexPQ_stats.nq += n;< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   indexPQ_stats.ncode += n * < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (search_type == < a class = "code" href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42feaf06a0e6b53f9cbe1c791c6912169b738" > ST_polysemous< / a > ||< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   search_type == < a class = "code" href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42feaef79af61798670a362434b7bc9ced45e" > ST_polysemous_generalize< / a > ) {< / 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 >   FAISS_ASSERT (< a class = "code" href = "structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e" > metric_type< / a > == METRIC_L2);< / 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 >   search_core_polysemous (n, x, k, distances, labels);< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   < / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   } < span class = "keywordflow" > else< / span > { < span class = "comment" > // code-to-code distances< / span > < / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   < / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   uint8_t * q_codes = < span class = "keyword" > new< / span > uint8_t [n * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ];< / 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 >   < span class = "keywordflow" > if< / span > (!encode_signs) {< / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   < / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ae5a340ee5a4b1d35a565b167de2a2ef1" > compute_codes< / a > (x, q_codes, n);< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   < / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   < / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   FAISS_ASSERT (< a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > == < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5" > nbits< / a > * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > );< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   memset (q_codes, 0, n * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > );< / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *xi = x + i * < a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > ;< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   uint8_t *code = q_codes + i * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ;< / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < < a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > ; j++)< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   < span class = "keywordflow" > if< / span > (xi[j] > 0) code [j> > 3] |= 1 < < (j & 7);< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   }< / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   }< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < span class = "keywordflow" > if< / span > (search_type == < a class = "code" href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea4287cbc83d1d5f0d1a02f014e5fe692c" > ST_SDC< / a > ) {< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   < a class = "code" href = "structfaiss_1_1HeapArray.html" > float_maxheap_array_t< / a > res = {< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   size_t(n), size_t(k), labels, distances};< / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   < / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .search_sdc (q_codes, n, < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > .data(), < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > , & res, < span class = "keyword" > true< / span > );< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   < span class = "keywordtype" > int< / span > * idistances = < span class = "keyword" > new< / span > < span class = "keywordtype" > int< / span > [n * k];< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   < / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   < a class = "code" href = "structfaiss_1_1HeapArray.html" > int_maxheap_array_t< / a > res = {< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   size_t (n), size_t (k), labels, idistances};< / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   < / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   < span class = "keywordflow" > if< / span > (search_type == < a class = "code" href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea903849f87cca2e7fbbfe034edbb81718" > ST_HE< / a > ) {< / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   < / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < a class = "code" href = "namespacefaiss.html#ac0b4dc73a8470d61f510396dc460ca18" > hammings_knn< / a > (& res, q_codes, < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > .data(),< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > , < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > , < span class = "keyword" > true< / span > );< / 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" > else< / span > < span class = "keywordflow" > if< / span > (search_type == < a class = "code" href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea237afca36629dae511c0ac56effbfaa6" > ST_generalized_HE< / a > ) {< / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   < / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   < a class = "code" href = "namespacefaiss.html#ae81da42f6f40356f7525917b3acb54c8" > generalized_hammings_knn< / a > (& res, q_codes, < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > .data(),< / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > , < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > , < span class = "keyword" > true< / 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 >   < / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   < span class = "comment" > // convert distances to floats< / span > < / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < k * n; i++)< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   distances[i] = idistances[i];< / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   < span class = "keyword" > delete< / span > [] idistances;< / 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 >   < span class = "keyword" > delete< / span > [] q_codes;< / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   indexPQ_stats.nq += n;< / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   indexPQ_stats.ncode += n * < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   }< / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   }< / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   < / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   < / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   < / 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 = "keywordtype" > void< / span > IndexPQStats::reset()< / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   {< / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   nq = ncode = n_hamming_pass = 0;< / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   }< / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   < / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   IndexPQStats indexPQ_stats;< / div >
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   < / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   < / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > class< / span > HammingComputer> < / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   < span class = "keyword" > static< / span > < span class = "keywordtype" > size_t< / span > polysemous_inner_loop (< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   < span class = "keyword" > const< / span > IndexPQ & index,< / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *dis_table_qi, < span class = "keyword" > const< / span > uint8_t *q_code,< / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   < span class = "keywordtype" > size_t< / span > k, < span class = "keywordtype" > float< / span > *heap_dis, < span class = "keywordtype" > long< / span > *heap_ids)< / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   {< / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   < / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   < span class = "keywordtype" > int< / span > M = index.pq.M;< / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   < span class = "keywordtype" > int< / span > code_size = index.pq.code_size;< / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   < span class = "keywordtype" > int< / span > ksub = index.pq.ksub;< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   < span class = "keywordtype" > size_t< / span > ntotal = index.ntotal;< / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   < span class = "keywordtype" > int< / span > ht = index.polysemous_ht;< / div >
< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   < / div >
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   < span class = "keyword" > const< / span > uint8_t *b_code = index.codes.data();< / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   < / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   < span class = "keywordtype" > size_t< / span > n_pass_i = 0;< / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   < / div >
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   HammingComputer hc (q_code, code_size);< / 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 = "keywordflow" > for< / span > (< span class = "keywordtype" > long< / span > bi = 0; bi < ntotal; bi++) {< / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   < span class = "keywordtype" > int< / span > hd = hc.hamming (b_code);< / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   < / div >
< div class = "line" > < a name = "l00250" > < / a > < span class = "lineno" > 250< / span >   < span class = "keywordflow" > if< / span > (hd < ht) {< / div >
< div class = "line" > < a name = "l00251" > < / a > < span class = "lineno" > 251< / span >   n_pass_i ++;< / div >
< div class = "line" > < a name = "l00252" > < / a > < span class = "lineno" > 252< / span >   < / div >
< div class = "line" > < a name = "l00253" > < / a > < span class = "lineno" > 253< / span >   < span class = "keywordtype" > float< / span > dis = 0;< / div >
< div class = "line" > < a name = "l00254" > < / a > < span class = "lineno" > 254< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * dis_table = dis_table_qi;< / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < M; m++) {< / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   dis += dis_table [b_code[m]];< / div >
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   dis_table += ksub;< / 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 = "keywordflow" > if< / span > (dis < heap_dis[0]) {< / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   maxheap_pop (k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   maxheap_push (k, heap_dis, heap_ids, dis, bi);< / div >
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   }< / div >
< div class = "line" > < a name = "l00264" > < / a > < span class = "lineno" > 264< / span >   }< / div >
< div class = "line" > < a name = "l00265" > < / a > < span class = "lineno" > 265< / span >   b_code += code_size;< / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   }< / div >
< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   < span class = "keywordflow" > return< / span > n_pass_i;< / 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 >   < / div >
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   < span class = "keywordtype" > void< / span > IndexPQ::search_core_polysemous (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x, idx_t k,< / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   < span class = "keywordtype" > float< / span > *distances, idx_t *labels)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   FAISS_ASSERT (< a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > % 8 == 0);< / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   FAISS_ASSERT (< a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a13bf69a0dc7b4e45792d10f458e4a92d" > byte_per_idx< / a > == 1);< / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   < / div >
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   < span class = "comment" > // PQ distance tables< / span > < / div >
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   < span class = "keywordtype" > float< / span > * dis_tables = < span class = "keyword" > new< / span > < span class = "keywordtype" > float< / span > [n * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > ];< / div >
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a3521b9a36c28219fd6180cc7a9ce8207" > compute_distance_tables< / a > (n, x, dis_tables);< / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   < / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   < span class = "comment" > // Hamming embedding queries< / span > < / div >
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   uint8_t * q_codes = < span class = "keyword" > new< / span > uint8_t [n * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ];< / div >
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   < / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   < span class = "keywordflow" > if< / span > (< span class = "keyword" > false< / span > ) {< / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ae5a340ee5a4b1d35a565b167de2a2ef1" > compute_codes< / a > (x, q_codes, n);< / div >
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   < span class = "preprocessor" > #pragma omp parallel for< / span > < / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > qi = 0; qi < n; qi++) {< / div >
< div class = "line" > < a name = "l00289" > < / a > < span class = "lineno" > 289< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a95060fedd7c09eb20e968fd2fdb4b316" > compute_code_from_distance_table< / a > < / div >
< div class = "line" > < a name = "l00290" > < / a > < span class = "lineno" > 290< / span >   (dis_tables + qi * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > ,< / div >
< div class = "line" > < a name = "l00291" > < / a > < span class = "lineno" > 291< / span >   q_codes + qi * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > );< / 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 >   }< / div >
< div class = "line" > < a name = "l00294" > < / a > < span class = "lineno" > 294< / span >   < / div >
< div class = "line" > < a name = "l00295" > < / a > < span class = "lineno" > 295< / span >   < span class = "keywordtype" > size_t< / span > n_pass = 0;< / div >
< div class = "line" > < a name = "l00296" > < / a > < span class = "lineno" > 296< / span >   < / div >
< div class = "line" > < a name = "l00297" > < / a > < span class = "lineno" > 297< / span >   < span class = "preprocessor" > #pragma omp parallel for reduction (+: n_pass)< / span > < / div >
< div class = "line" > < a name = "l00298" > < / a > < span class = "lineno" > 298< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > qi = 0; qi < n; qi++) {< / div >
< div class = "line" > < a name = "l00299" > < / a > < span class = "lineno" > 299< / span >   < span class = "keyword" > const< / span > uint8_t * q_code = q_codes + qi * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ;< / 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 = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * dis_table_qi = dis_tables + qi * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > ;< / div >
< div class = "line" > < a name = "l00302" > < / a > < span class = "lineno" > 302< / span >   < / div >
< div class = "line" > < a name = "l00303" > < / a > < span class = "lineno" > 303< / span >   < span class = "keywordtype" > long< / span > * heap_ids = labels + qi * k;< / div >
< div class = "line" > < a name = "l00304" > < / a > < span class = "lineno" > 304< / span >   < span class = "keywordtype" > float< / span > *heap_dis = distances + qi * k;< / div >
< div class = "line" > < a name = "l00305" > < / a > < span class = "lineno" > 305< / span >   maxheap_heapify (k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00306" > < / a > < span class = "lineno" > 306< / span >   < / div >
< div class = "line" > < a name = "l00307" > < / a > < span class = "lineno" > 307< / span >   < span class = "keywordflow" > if< / span > (search_type == < a class = "code" href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42feaf06a0e6b53f9cbe1c791c6912169b738" > ST_polysemous< / a > ) {< / div >
< div class = "line" > < a name = "l00308" > < / a > < span class = "lineno" > 308< / span >   < / div >
< div class = "line" > < a name = "l00309" > < / a > < span class = "lineno" > 309< / span >   < span class = "keywordflow" > switch< / span > (< a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ) {< / div >
< div class = "line" > < a name = "l00310" > < / a > < span class = "lineno" > 310< / span >   < span class = "keywordflow" > case< / span > 4:< / div >
< div class = "line" > < a name = "l00311" > < / a > < span class = "lineno" > 311< / span >   n_pass += polysemous_inner_loop< HammingComputer4> < / div >
< div class = "line" > < a name = "l00312" > < / a > < span class = "lineno" > 312< / span >   (*< span class = "keyword" > this< / span > , dis_table_qi, q_code, k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00313" > < / a > < span class = "lineno" > 313< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00314" > < / a > < span class = "lineno" > 314< / span >   < span class = "keywordflow" > case< / span > 8:< / div >
< div class = "line" > < a name = "l00315" > < / a > < span class = "lineno" > 315< / span >   n_pass += polysemous_inner_loop< HammingComputer8> < / div >
< div class = "line" > < a name = "l00316" > < / a > < span class = "lineno" > 316< / span >   (*< span class = "keyword" > this< / span > , dis_table_qi, q_code, k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00317" > < / a > < span class = "lineno" > 317< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00318" > < / a > < span class = "lineno" > 318< / span >   < span class = "keywordflow" > case< / span > 16:< / div >
< div class = "line" > < a name = "l00319" > < / a > < span class = "lineno" > 319< / span >   n_pass += polysemous_inner_loop< HammingComputer16> < / div >
< div class = "line" > < a name = "l00320" > < / a > < span class = "lineno" > 320< / span >   (*< span class = "keyword" > this< / span > , dis_table_qi, q_code, k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00321" > < / a > < span class = "lineno" > 321< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00322" > < / a > < span class = "lineno" > 322< / span >   < span class = "keywordflow" > case< / span > 32:< / div >
< div class = "line" > < a name = "l00323" > < / a > < span class = "lineno" > 323< / span >   n_pass += polysemous_inner_loop< HammingComputer32> < / div >
< div class = "line" > < a name = "l00324" > < / a > < span class = "lineno" > 324< / span >   (*< span class = "keyword" > this< / span > , dis_table_qi, q_code, k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00325" > < / a > < span class = "lineno" > 325< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00326" > < / a > < span class = "lineno" > 326< / span >   < span class = "keywordflow" > case< / span > 20:< / div >
< div class = "line" > < a name = "l00327" > < / a > < span class = "lineno" > 327< / span >   n_pass += polysemous_inner_loop< HammingComputer20> < / div >
< div class = "line" > < a name = "l00328" > < / a > < span class = "lineno" > 328< / span >   (*< span class = "keyword" > this< / span > , dis_table_qi, q_code, k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00329" > < / a > < span class = "lineno" > 329< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00330" > < / a > < span class = "lineno" > 330< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l00331" > < / a > < span class = "lineno" > 331< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > % 8 == 0)< / div >
< div class = "line" > < a name = "l00332" > < / a > < span class = "lineno" > 332< / span >   n_pass += polysemous_inner_loop< HammingComputerM8> < / div >
< div class = "line" > < a name = "l00333" > < / a > < span class = "lineno" > 333< / span >   (*< span class = "keyword" > this< / span > , dis_table_qi, q_code, k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00334" > < / a > < span class = "lineno" > 334< / span >   < span class = "keywordflow" > else< / span > < / div >
< div class = "line" > < a name = "l00335" > < / a > < span class = "lineno" > 335< / span >   n_pass += polysemous_inner_loop< HammingComputerM4> < / div >
< div class = "line" > < a name = "l00336" > < / a > < span class = "lineno" > 336< / span >   (*< span class = "keyword" > this< / span > , dis_table_qi, q_code, k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00337" > < / a > < span class = "lineno" > 337< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00338" > < / a > < span class = "lineno" > 338< / span >   }< / div >
< div class = "line" > < a name = "l00339" > < / a > < span class = "lineno" > 339< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00340" > < / a > < span class = "lineno" > 340< / span >   < span class = "keywordflow" > switch< / span > (< a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ) {< / div >
< div class = "line" > < a name = "l00341" > < / a > < span class = "lineno" > 341< / span >   < span class = "keywordflow" > case< / span > 8:< / div >
< div class = "line" > < a name = "l00342" > < / a > < span class = "lineno" > 342< / span >   n_pass += polysemous_inner_loop< GenHammingComputer8> < / div >
< div class = "line" > < a name = "l00343" > < / a > < span class = "lineno" > 343< / span >   (*< span class = "keyword" > this< / span > , dis_table_qi, q_code, k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00344" > < / a > < span class = "lineno" > 344< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00345" > < / a > < span class = "lineno" > 345< / span >   < span class = "keywordflow" > case< / span > 16:< / div >
< div class = "line" > < a name = "l00346" > < / a > < span class = "lineno" > 346< / span >   n_pass += polysemous_inner_loop< GenHammingComputer16> < / div >
< div class = "line" > < a name = "l00347" > < / a > < span class = "lineno" > 347< / span >   (*< span class = "keyword" > this< / span > , dis_table_qi, q_code, k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00348" > < / a > < span class = "lineno" > 348< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00349" > < / a > < span class = "lineno" > 349< / span >   < span class = "keywordflow" > case< / span > 32:< / div >
< div class = "line" > < a name = "l00350" > < / a > < span class = "lineno" > 350< / span >   n_pass += polysemous_inner_loop< GenHammingComputer32> < / div >
< div class = "line" > < a name = "l00351" > < / a > < span class = "lineno" > 351< / span >   (*< span class = "keyword" > this< / span > , dis_table_qi, q_code, k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00352" > < / a > < span class = "lineno" > 352< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00353" > < / a > < span class = "lineno" > 353< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l00354" > < / a > < span class = "lineno" > 354< / span >   n_pass += polysemous_inner_loop< GenHammingComputerM8> < / div >
< div class = "line" > < a name = "l00355" > < / a > < span class = "lineno" > 355< / span >   (*< span class = "keyword" > this< / span > , dis_table_qi, q_code, k, heap_dis, heap_ids);< / div >
< div class = "line" > < a name = "l00356" > < / a > < span class = "lineno" > 356< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00357" > < / a > < span class = "lineno" > 357< / span >   }< / 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 >   maxheap_reorder (k, heap_dis, heap_ids);< / 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 >   < / div >
< div class = "line" > < a name = "l00362" > < / a > < span class = "lineno" > 362< / span >   indexPQ_stats.nq += n;< / div >
< div class = "line" > < a name = "l00363" > < / a > < span class = "lineno" > 363< / span >   indexPQ_stats.ncode += n * < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l00364" > < / a > < span class = "lineno" > 364< / span >   indexPQ_stats.n_hamming_pass += n_pass;< / div >
< div class = "line" > < a name = "l00365" > < / a > < span class = "lineno" > 365< / span >   < / div >
< div class = "line" > < a name = "l00366" > < / a > < span class = "lineno" > 366< / span >   < span class = "keyword" > delete< / span > [] q_codes;< / div >
< div class = "line" > < a name = "l00367" > < / a > < span class = "lineno" > 367< / span >   < span class = "keyword" > delete< / span > [] dis_tables;< / div >
< div class = "line" > < a name = "l00368" > < / a > < span class = "lineno" > 368< / span >   < / 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 >   < / 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" > * Stats of IndexPQ codes< / 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 >   < / div >
< div class = "line" > < a name = "l00378" > < / a > < span class = "lineno" > 378< / span >   < / div >
< div class = "line" > < a name = "l00379" > < / a > < span class = "lineno" > 379< / span >   < / div >
< div class = "line" > < a name = "l00380" > < / a > < span class = "lineno" > 380< / span >   < / div >
< div class = "line" > < a name = "l00381" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPQ.html#aa131767383619bb5848b131502ada9cf" > 381< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa131767383619bb5848b131502ada9cf" > IndexPQ::hamming_distance_table< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x,< / div >
< div class = "line" > < a name = "l00382" > < / a > < span class = "lineno" > 382< / span >   int32_t *dis)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00383" > < / a > < span class = "lineno" > 383< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00384" > < / a > < span class = "lineno" > 384< / span >   uint8_t * q_codes = < span class = "keyword" > new< / span > uint8_t [n * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ];< / div >
< div class = "line" > < a name = "l00385" > < / a > < span class = "lineno" > 385< / span >   < / div >
< div class = "line" > < a name = "l00386" > < / a > < span class = "lineno" > 386< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ae5a340ee5a4b1d35a565b167de2a2ef1" > compute_codes< / a > (x, q_codes, n);< / 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 >   hammings (q_codes, < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > .data(), n, < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > , < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > , dis);< / div >
< div class = "line" > < a name = "l00389" > < / a > < span class = "lineno" > 389< / span >   < / div >
< div class = "line" > < a name = "l00390" > < / a > < span class = "lineno" > 390< / span >   < span class = "keyword" > delete< / span > [] q_codes;< / div >
< div class = "line" > < a name = "l00391" > < / a > < span class = "lineno" > 391< / span >   }< / div >
< div class = "line" > < a name = "l00392" > < / a > < span class = "lineno" > 392< / span >   < / div >
< div class = "line" > < a name = "l00393" > < / a > < span class = "lineno" > 393< / span >   < / div >
< div class = "line" > < a name = "l00394" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPQ.html#ada06f5db85c91a4c140119a5897c6064" > 394< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPQ.html#ada06f5db85c91a4c140119a5897c6064" > IndexPQ::hamming_distance_histogram< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x,< / div >
< div class = "line" > < a name = "l00395" > < / a > < span class = "lineno" > 395< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > nb, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *xb,< / div >
< div class = "line" > < a name = "l00396" > < / a > < span class = "lineno" > 396< / span >   < span class = "keywordtype" > long< / span > *hist)< / 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 >   FAISS_ASSERT (< a class = "code" href = "structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e" > metric_type< / a > == METRIC_L2);< / div >
< div class = "line" > < a name = "l00399" > < / a > < span class = "lineno" > 399< / span >   FAISS_ASSERT (< a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > % 8 == 0);< / div >
< div class = "line" > < a name = "l00400" > < / a > < span class = "lineno" > 400< / span >   FAISS_ASSERT (< a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a13bf69a0dc7b4e45792d10f458e4a92d" > byte_per_idx< / a > == 1);< / 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 >   < span class = "comment" > // Hamming embedding queries< / span > < / div >
< div class = "line" > < a name = "l00403" > < / a > < span class = "lineno" > 403< / span >   uint8_t * q_codes = < span class = "keyword" > new< / span > uint8_t [n * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ];< / div >
< div class = "line" > < a name = "l00404" > < / a > < span class = "lineno" > 404< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ae5a340ee5a4b1d35a565b167de2a2ef1" > compute_codes< / a > (x, q_codes, n);< / 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 >   uint8_t * b_codes ;< / div >
< div class = "line" > < a name = "l00407" > < / a > < span class = "lineno" > 407< / span >   < / div >
< div class = "line" > < a name = "l00408" > < / a > < span class = "lineno" > 408< / span >   < span class = "keywordflow" > if< / span > (xb) {< / div >
< div class = "line" > < a name = "l00409" > < / a > < span class = "lineno" > 409< / span >   b_codes = < span class = "keyword" > new< / span > uint8_t [nb * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > ];< / div >
< div class = "line" > < a name = "l00410" > < / a > < span class = "lineno" > 410< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ae5a340ee5a4b1d35a565b167de2a2ef1" > compute_codes< / a > (xb, b_codes, nb);< / div >
< div class = "line" > < a name = "l00411" > < / a > < span class = "lineno" > 411< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00412" > < / a > < span class = "lineno" > 412< / span >   nb = < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l00413" > < / a > < span class = "lineno" > 413< / span >   b_codes = < a class = "code" href = "structfaiss_1_1IndexPQ.html#a490b64b12384951ed66548a3a48f91e5" > codes< / a > .data();< / div >
< div class = "line" > < a name = "l00414" > < / a > < span class = "lineno" > 414< / span >   }< / div >
< div class = "line" > < a name = "l00415" > < / a > < span class = "lineno" > 415< / span >   < span class = "keywordtype" > int< / span > nbits = < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5" > nbits< / a > ;< / div >
< div class = "line" > < a name = "l00416" > < / a > < span class = "lineno" > 416< / span >   memset (hist, 0, < span class = "keyword" > sizeof< / span > (*hist) * (nbits + 1));< / div >
< div class = "line" > < a name = "l00417" > < / a > < span class = "lineno" > 417< / span >   < span class = "keywordtype" > size_t< / span > bs = 256;< / div >
< div class = "line" > < a name = "l00418" > < / a > < span class = "lineno" > 418< / span >   < / div >
< div class = "line" > < a name = "l00419" > < / a > < span class = "lineno" > 419< / span >   < span class = "preprocessor" > #pragma omp parallel< / span > < / div >
< div class = "line" > < a name = "l00420" > < / a > < span class = "lineno" > 420< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l00421" > < / a > < span class = "lineno" > 421< / span >   std::vector< long> histi (nbits + 1);< / div >
< div class = "line" > < a name = "l00422" > < / a > < span class = "lineno" > 422< / span >   hamdis_t *distances = < span class = "keyword" > new< / span > hamdis_t [nb * bs];< / div >
< div class = "line" > < a name = "l00423" > < / a > < span class = "lineno" > 423< / span >   < span class = "preprocessor" > #pragma omp for< / span > < / div >
< div class = "line" > < a name = "l00424" > < / a > < span class = "lineno" > 424< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > q0 = 0; q0 < n; q0 += bs) {< / div >
< div class = "line" > < a name = "l00425" > < / a > < span class = "lineno" > 425< / span >   < span class = "comment" > // printf (" dis stats: %ld/%ld\n" , q0, n);< / span > < / div >
< div class = "line" > < a name = "l00426" > < / a > < span class = "lineno" > 426< / span >   < span class = "keywordtype" > size_t< / span > q1 = q0 + bs;< / div >
< div class = "line" > < a name = "l00427" > < / a > < span class = "lineno" > 427< / span >   < span class = "keywordflow" > if< / span > (q1 > n) q1 = n;< / div >
< div class = "line" > < a name = "l00428" > < / a > < span class = "lineno" > 428< / span >   < / div >
< div class = "line" > < a name = "l00429" > < / a > < span class = "lineno" > 429< / span >   hammings (q_codes + q0 * < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > , b_codes,< / div >
< div class = "line" > < a name = "l00430" > < / a > < span class = "lineno" > 430< / span >   q1 - q0, nb,< / div >
< div class = "line" > < a name = "l00431" > < / a > < span class = "lineno" > 431< / span >   < a class = "code" href = "structfaiss_1_1IndexPQ.html#aa7b7cfe0c8dfd37c8a940fd93d12dc88" > pq< / a > .< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > , distances);< / div >
< div class = "line" > < a name = "l00432" > < / a > < span class = "lineno" > 432< / span >   < / div >
< div class = "line" > < a name = "l00433" > < / a > < span class = "lineno" > 433< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < nb * (q1 - q0); i++)< / div >
< div class = "line" > < a name = "l00434" > < / a > < span class = "lineno" > 434< / span >   histi [distances [i]]++;< / div >
< div class = "line" > < a name = "l00435" > < / a > < span class = "lineno" > 435< / span >   }< / div >
< div class = "line" > < a name = "l00436" > < / a > < span class = "lineno" > 436< / span >   < span class = "preprocessor" > #pragma omp critical< / span > < / div >
< div class = "line" > < a name = "l00437" > < / a > < span class = "lineno" > 437< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l00438" > < / a > < span class = "lineno" > 438< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < = nbits; i++)< / div >
< div class = "line" > < a name = "l00439" > < / a > < span class = "lineno" > 439< / span >   hist[i] += histi[i];< / div >
< div class = "line" > < a name = "l00440" > < / a > < span class = "lineno" > 440< / span >   }< / div >
< div class = "line" > < a name = "l00441" > < / a > < span class = "lineno" > 441< / span >   < span class = "keyword" > delete< / span > [] distances;< / 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 >   < / div >
< div class = "line" > < a name = "l00444" > < / a > < span class = "lineno" > 444< / span >   < span class = "keyword" > delete< / span > [] q_codes;< / div >
< div class = "line" > < a name = "l00445" > < / a > < span class = "lineno" > 445< / span >   < span class = "keywordflow" > if< / span > (xb)< / div >
< div class = "line" > < a name = "l00446" > < / a > < span class = "lineno" > 446< / span >   < span class = "keyword" > delete< / span > [] b_codes;< / 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 >   }< / div >
< div class = "line" > < a name = "l00449" > < / a > < span class = "lineno" > 449< / span >   < / 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 >   < / div >
< div class = "line" > < a name = "l00452" > < / a > < span class = "lineno" > 452< / span >   < / div >
< div class = "line" > < a name = "l00453" > < / a > < span class = "lineno" > 453< / span >   < / div >
< div class = "line" > < a name = "l00454" > < / a > < span class = "lineno" > 454< / span >   < / div >
< div class = "line" > < a name = "l00455" > < / a > < span class = "lineno" > 455< / 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 >   < / div >
< div class = "line" > < a name = "l00458" > < / a > < span class = "lineno" > 458< / span >   < / div >
< div class = "line" > < a name = "l00459" > < / a > < span class = "lineno" > 459< / span >   < / div >
< div class = "line" > < a name = "l00460" > < / a > < span class = "lineno" > 460< / span >   < / div >
< div class = "line" > < a name = "l00461" > < / a > < span class = "lineno" > 461< / span >   < / div >
< div class = "line" > < a name = "l00462" > < / a > < span class = "lineno" > 462< / span >   < / div >
< div class = "line" > < a name = "l00463" > < / a > < span class = "lineno" > 463< / span >   < / div >
< div class = "line" > < a name = "l00464" > < / a > < span class = "lineno" > 464< / span >   < / 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 >   < / 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 >   < span class = "comment" > /*****************************************< / span > < / div >
< div class = "line" > < a name = "l00470" > < / a > < span class = "lineno" > 470< / span >   < span class = "comment" > * MultiIndexQuantizer< / span > < / div >
< div class = "line" > < a name = "l00471" > < / a > < span class = "lineno" > 471< / span >   < span class = "comment" > ******************************************/< / 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 = "keyword" > template< / span > < < span class = "keyword" > typename< / span > T> < / div >
< div class = "line" > < a name = "l00476" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1ArgSort.html" > 476< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1ArgSort.html" > ArgSort< / a > {< / div >
< div class = "line" > < a name = "l00477" > < / a > < span class = "lineno" > 477< / span >   < span class = "keyword" > const< / span > T * x;< / div >
< div class = "line" > < a name = "l00478" > < / a > < span class = "lineno" > 478< / span >   < span class = "keywordtype" > bool< / span > operator() (< span class = "keywordtype" > size_t< / span > i, < span class = "keywordtype" > size_t< / span > j) {< / div >
< div class = "line" > < a name = "l00479" > < / a > < span class = "lineno" > 479< / span >   < span class = "keywordflow" > return< / span > x[i] < x[j];< / div >
< div class = "line" > < a name = "l00480" > < / a > < span class = "lineno" > 480< / span >   }< / div >
< div class = "line" > < a name = "l00481" > < / a > < span class = "lineno" > 481< / span >   };< / 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 >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00484" > < / a > < span class = "lineno" > 484< / span >   < span class = "comment" > /** Array that maintains a permutation of its elements so that the< / span > < / div >
< div class = "line" > < a name = "l00485" > < / a > < span class = "lineno" > 485< / span >   < span class = "comment" > * array' s elements are sorted< / span > < / div >
< div class = "line" > < a name = "l00486" > < / a > < span class = "lineno" > 486< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00487" > < / a > < span class = "lineno" > 487< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > T> < / div >
< div class = "line" > < a name = "l00488" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1SortedArray.html" > 488< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1SortedArray.html" > SortedArray< / a > {< / div >
< div class = "line" > < a name = "l00489" > < / a > < span class = "lineno" > 489< / span >   < span class = "keyword" > const< / span > T * x;< / div >
< div class = "line" > < a name = "l00490" > < / a > < span class = "lineno" > 490< / span >   < span class = "keywordtype" > int< / span > N;< / div >
< div class = "line" > < a name = "l00491" > < / a > < span class = "lineno" > 491< / span >   std::vector< int> perm;< / div >
< div class = "line" > < a name = "l00492" > < / a > < span class = "lineno" > 492< / span >   < / div >
< div class = "line" > < a name = "l00493" > < / a > < span class = "lineno" > 493< / span >   < span class = "keyword" > explicit< / span > < a class = "code" href = "structfaiss_1_1SortedArray.html" > SortedArray< / a > (< span class = "keywordtype" > int< / span > N) {< / div >
< div class = "line" > < a name = "l00494" > < / a > < span class = "lineno" > 494< / span >   this-> N = N;< / div >
< div class = "line" > < a name = "l00495" > < / a > < span class = "lineno" > 495< / span >   perm.resize (N);< / div >
< div class = "line" > < a name = "l00496" > < / a > < span class = "lineno" > 496< / span >   }< / div >
< div class = "line" > < a name = "l00497" > < / a > < span class = "lineno" > 497< / span >   < / div >
< div class = "line" > < a name = "l00498" > < / a > < span class = "lineno" > 498< / span >   < span class = "keywordtype" > void< / span > init (< span class = "keyword" > const< / span > T*x) {< / div >
< div class = "line" > < a name = "l00499" > < / a > < span class = "lineno" > 499< / span >   this-> x = x;< / div >
< div class = "line" > < a name = "l00500" > < / a > < span class = "lineno" > 500< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > n = 0; n < N; n++)< / div >
< div class = "line" > < a name = "l00501" > < / a > < span class = "lineno" > 501< / span >   perm[n] = n;< / div >
< div class = "line" > < a name = "l00502" > < / a > < span class = "lineno" > 502< / span >   < a class = "code" href = "structfaiss_1_1ArgSort.html" > ArgSort< T> < / a > cmp = {x };< / div >
< div class = "line" > < a name = "l00503" > < / a > < span class = "lineno" > 503< / span >   std::sort (perm.begin(), perm.end(), cmp);< / 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 >   < / div >
< div class = "line" > < a name = "l00506" > < / a > < span class = "lineno" > 506< / span >   < span class = "comment" > // get smallest value< / span > < / div >
< div class = "line" > < a name = "l00507" > < / a > < span class = "lineno" > 507< / span >   T get_0 () {< / div >
< div class = "line" > < a name = "l00508" > < / a > < span class = "lineno" > 508< / span >   < span class = "keywordflow" > return< / span > x[perm[0]];< / 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 >   < span class = "comment" > // get delta between n-smallest and n-1 -smallest< / span > < / div >
< div class = "line" > < a name = "l00512" > < / a > < span class = "lineno" > 512< / span >   T get_diff (< span class = "keywordtype" > int< / span > n) {< / div >
< div class = "line" > < a name = "l00513" > < / a > < span class = "lineno" > 513< / span >   < span class = "keywordflow" > return< / span > x[perm[n]] - x[perm[n - 1]];< / div >
< div class = "line" > < a name = "l00514" > < / a > < span class = "lineno" > 514< / span >   }< / 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 >   < span class = "comment" > // remap orders counted from smallest to indices in array< / span > < / div >
< div class = "line" > < a name = "l00517" > < / a > < span class = "lineno" > 517< / span >   < span class = "keywordtype" > int< / span > get_ord (< span class = "keywordtype" > int< / span > n) {< / div >
< div class = "line" > < a name = "l00518" > < / a > < span class = "lineno" > 518< / span >   < span class = "keywordflow" > return< / span > perm[n];< / div >
< div class = "line" > < a name = "l00519" > < / a > < span class = "lineno" > 519< / span >   }< / div >
< div class = "line" > < a name = "l00520" > < / a > < span class = "lineno" > 520< / span >   };< / div >
< div class = "line" > < a name = "l00521" > < / a > < span class = "lineno" > 521< / span >   < / div >
< div class = "line" > < a name = "l00522" > < / a > < span class = "lineno" > 522< / span >   < / div >
< div class = "line" > < a name = "l00523" > < / a > < span class = "lineno" > 523< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00524" > < / a > < span class = "lineno" > 524< / span >   < span class = "comment" > /** Array has n values. Sort the k first ones and copy the other ones< / span > < / div >
< div class = "line" > < a name = "l00525" > < / a > < span class = "lineno" > 525< / span >   < span class = "comment" > * into elements k..n-1< / span > < / div >
< div class = "line" > < a name = "l00526" > < / a > < span class = "lineno" > 526< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00527" > < / a > < span class = "lineno" > 527< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > class< / span > C> < / div >
< div class = "line" > < a name = "l00528" > < / a > < span class = "lineno" > < a class = "line" href = "namespacefaiss.html#a7c5553442c8b9342a0ad449e2b67f275" > 528< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "namespacefaiss.html#a7c5553442c8b9342a0ad449e2b67f275" > partial_sort< / a > (< span class = "keywordtype" > int< / span > k, < span class = "keywordtype" > int< / span > n,< / div >
< div class = "line" > < a name = "l00529" > < / a > < span class = "lineno" > 529< / span >   < span class = "keyword" > const< / span > < span class = "keyword" > typename< / span > C::T * vals, < span class = "keyword" > typename< / span > C::TI * perm) {< / div >
< div class = "line" > < a name = "l00530" > < / a > < span class = "lineno" > 530< / span >   < span class = "comment" > // insert first k elts in heap< / span > < / div >
< div class = "line" > < a name = "l00531" > < / a > < span class = "lineno" > 531< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 1; i < k; i++) {< / div >
< div class = "line" > < a name = "l00532" > < / a > < span class = "lineno" > 532< / span >   indirect_heap_push< C> (i + 1, vals, perm, perm[i]);< / div >
< div class = "line" > < a name = "l00533" > < / a > < span class = "lineno" > 533< / span >   }< / div >
< div class = "line" > < a name = "l00534" > < / a > < span class = "lineno" > 534< / span >   < / div >
< div class = "line" > < a name = "l00535" > < / a > < span class = "lineno" > 535< / span >   < span class = "comment" > // insert next n - k elts in heap< / span > < / div >
< div class = "line" > < a name = "l00536" > < / a > < span class = "lineno" > 536< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = k; i < n; i++) {< / div >
< div class = "line" > < a name = "l00537" > < / a > < span class = "lineno" > 537< / span >   < span class = "keyword" > typename< / span > C::TI < span class = "keywordtype" > id< / span > = perm[i];< / div >
< div class = "line" > < a name = "l00538" > < / a > < span class = "lineno" > 538< / span >   < span class = "keyword" > typename< / span > C::TI top = perm[0];< / div >
< div class = "line" > < a name = "l00539" > < / a > < span class = "lineno" > 539< / span >   < / div >
< div class = "line" > < a name = "l00540" > < / a > < span class = "lineno" > 540< / span >   < span class = "keywordflow" > if< / span > (C::cmp(vals[top], vals[< span class = "keywordtype" > id< / span > ])) {< / div >
< div class = "line" > < a name = "l00541" > < / a > < span class = "lineno" > 541< / span >   indirect_heap_pop< C> (k, vals, perm);< / div >
< div class = "line" > < a name = "l00542" > < / a > < span class = "lineno" > 542< / span >   indirect_heap_push< C> (k, vals, perm, id);< / div >
< div class = "line" > < a name = "l00543" > < / a > < span class = "lineno" > 543< / span >   perm[i] = top;< / div >
< div class = "line" > < a name = "l00544" > < / a > < span class = "lineno" > 544< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00545" > < / a > < span class = "lineno" > 545< / span >   < span class = "comment" > // nothing, elt at i is good where it is.< / span > < / 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 >   }< / 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" > // order the k first elements in heap< / span > < / div >
< div class = "line" > < a name = "l00550" > < / a > < span class = "lineno" > 550< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = k - 1; i > 0; i--) {< / div >
< div class = "line" > < a name = "l00551" > < / a > < span class = "lineno" > 551< / span >   < span class = "keyword" > typename< / span > C::TI top = perm[0];< / div >
< div class = "line" > < a name = "l00552" > < / a > < span class = "lineno" > 552< / span >   indirect_heap_pop< C> (i + 1, vals, perm);< / div >
< div class = "line" > < a name = "l00553" > < / a > < span class = "lineno" > 553< / span >   perm[i] = top;< / 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 >   }< / div >
< div class = "line" > < a name = "l00556" > < / a > < span class = "lineno" > 556< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00557" > < / a > < span class = "lineno" > 557< / span >   < span class = "comment" > /** same as SortedArray, but only the k first elements are sorted */< / span > < / div >
< div class = "line" > < a name = "l00558" > < / a > < span class = "lineno" > 558< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > T> < / div >
< div class = "line" > < a name = "l00559" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1SemiSortedArray.html" > 559< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1SemiSortedArray.html" > SemiSortedArray< / a > {< / div >
< div class = "line" > < a name = "l00560" > < / a > < span class = "lineno" > 560< / span >   < span class = "keyword" > const< / span > T * x;< / div >
< div class = "line" > < a name = "l00561" > < / a > < span class = "lineno" > 561< / span >   < span class = "keywordtype" > int< / span > N;< / div >
< div class = "line" > < a name = "l00562" > < / a > < span class = "lineno" > 562< / span >   < / div >
< div class = "line" > < a name = "l00563" > < / a > < span class = "lineno" > 563< / span >   < span class = "comment" > // type of the heap: CMax = sort ascending< / span > < / div >
< div class = "line" > < a name = "l00564" > < / a > < span class = "lineno" > 564< / span >   < span class = "keyword" > typedef< / span > < a class = "code" href = "structfaiss_1_1CMax.html" > CMax< T, int> < / a > < a class = "code" href = "structfaiss_1_1CMax.html" > HC< / a > ;< / div >
< div class = "line" > < a name = "l00565" > < / a > < span class = "lineno" > 565< / span >   std::vector< int> perm;< / div >
< div class = "line" > < a name = "l00566" > < / a > < span class = "lineno" > 566< / span >   < / div >
< div class = "line" > < a name = "l00567" > < / a > < span class = "lineno" > 567< / span >   < span class = "keywordtype" > int< / span > k; < span class = "comment" > // k elements are sorted< / span > < / div >
< div class = "line" > < a name = "l00568" > < / a > < span class = "lineno" > 568< / span >   < / div >
< div class = "line" > < a name = "l00569" > < / a > < span class = "lineno" > 569< / span >   < span class = "keywordtype" > int< / span > initial_k, k_factor;< / div >
< div class = "line" > < a name = "l00570" > < / a > < span class = "lineno" > 570< / span >   < / div >
< div class = "line" > < a name = "l00571" > < / a > < span class = "lineno" > 571< / span >   < span class = "keyword" > explicit< / span > < a class = "code" href = "structfaiss_1_1SemiSortedArray.html" > SemiSortedArray< / a > (< span class = "keywordtype" > int< / span > N) {< / div >
< div class = "line" > < a name = "l00572" > < / a > < span class = "lineno" > 572< / span >   this-> N = N;< / div >
< div class = "line" > < a name = "l00573" > < / a > < span class = "lineno" > 573< / span >   perm.resize (N);< / div >
< div class = "line" > < a name = "l00574" > < / a > < span class = "lineno" > 574< / span >   perm.resize (N);< / div >
< div class = "line" > < a name = "l00575" > < / a > < span class = "lineno" > 575< / span >   initial_k = 3;< / div >
< div class = "line" > < a name = "l00576" > < / a > < span class = "lineno" > 576< / span >   k_factor = 4;< / div >
< div class = "line" > < a name = "l00577" > < / a > < span class = "lineno" > 577< / span >   }< / div >
< div class = "line" > < a name = "l00578" > < / a > < span class = "lineno" > 578< / span >   < / div >
< div class = "line" > < a name = "l00579" > < / a > < span class = "lineno" > 579< / span >   < span class = "keywordtype" > void< / span > init (< span class = "keyword" > const< / span > T*x) {< / div >
< div class = "line" > < a name = "l00580" > < / a > < span class = "lineno" > 580< / span >   this-> x = x;< / div >
< div class = "line" > < a name = "l00581" > < / a > < span class = "lineno" > 581< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > n = 0; n < N; n++)< / div >
< div class = "line" > < a name = "l00582" > < / a > < span class = "lineno" > 582< / span >   perm[n] = n;< / div >
< div class = "line" > < a name = "l00583" > < / a > < span class = "lineno" > 583< / span >   k = 0;< / div >
< div class = "line" > < a name = "l00584" > < / a > < span class = "lineno" > 584< / span >   < a class = "code" href = "structfaiss_1_1SemiSortedArray.html#a9b7e3826daa8964a3be0ea16b4abf608" > grow< / a > (initial_k);< / 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 >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00587" > < / a > < span class = "lineno" > 587< / span >   < span class = "comment" > /// grow the sorted part of the array to size next_k< / span > < / div >
< div class = "line" > < a name = "l00588" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1SemiSortedArray.html#a9b7e3826daa8964a3be0ea16b4abf608" > 588< / a > < / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1SemiSortedArray.html#a9b7e3826daa8964a3be0ea16b4abf608" > grow< / a > (< span class = "keywordtype" > int< / span > next_k) {< / div >
< div class = "line" > < a name = "l00589" > < / a > < span class = "lineno" > 589< / span >   < span class = "keywordflow" > if< / span > (next_k < N) {< / div >
< div class = "line" > < a name = "l00590" > < / a > < span class = "lineno" > 590< / span >   partial_sort< HC> (next_k - k, N - k, x, & perm[k]);< / div >
< div class = "line" > < a name = "l00591" > < / a > < span class = "lineno" > 591< / span >   k = next_k;< / div >
< div class = "line" > < a name = "l00592" > < / a > < span class = "lineno" > 592< / span >   } < span class = "keywordflow" > else< / span > { < span class = "comment" > // full sort of remainder of array< / span > < / div >
< div class = "line" > < a name = "l00593" > < / a > < span class = "lineno" > 593< / span >   < a class = "code" href = "structfaiss_1_1ArgSort.html" > ArgSort< T> < / a > cmp = {x };< / div >
< div class = "line" > < a name = "l00594" > < / a > < span class = "lineno" > 594< / span >   std::sort (perm.begin() + k, perm.end(), cmp);< / div >
< div class = "line" > < a name = "l00595" > < / a > < span class = "lineno" > 595< / span >   k = N;< / div >
< div class = "line" > < a name = "l00596" > < / a > < span class = "lineno" > 596< / span >   }< / div >
< div class = "line" > < a name = "l00597" > < / a > < span class = "lineno" > 597< / span >   }< / div >
< div class = "line" > < a name = "l00598" > < / a > < span class = "lineno" > 598< / span >   < / div >
< div class = "line" > < a name = "l00599" > < / a > < span class = "lineno" > 599< / span >   < span class = "comment" > // get smallest value< / span > < / div >
< div class = "line" > < a name = "l00600" > < / a > < span class = "lineno" > 600< / span >   T get_0 () {< / div >
< div class = "line" > < a name = "l00601" > < / a > < span class = "lineno" > 601< / span >   < span class = "keywordflow" > return< / span > x[perm[0]];< / div >
< div class = "line" > < a name = "l00602" > < / a > < span class = "lineno" > 602< / span >   }< / div >
< div class = "line" > < a name = "l00603" > < / a > < span class = "lineno" > 603< / span >   < / div >
< div class = "line" > < a name = "l00604" > < / a > < span class = "lineno" > 604< / span >   < span class = "comment" > // get delta between n-smallest and n-1 -smallest< / span > < / div >
< div class = "line" > < a name = "l00605" > < / a > < span class = "lineno" > 605< / span >   T get_diff (< span class = "keywordtype" > int< / span > n) {< / div >
< div class = "line" > < a name = "l00606" > < / a > < span class = "lineno" > 606< / span >   < span class = "keywordflow" > if< / span > (n > = k) {< / div >
< div class = "line" > < a name = "l00607" > < / a > < span class = "lineno" > 607< / span >   < span class = "comment" > // want to keep powers of 2 - 1< / span > < / div >
< div class = "line" > < a name = "l00608" > < / a > < span class = "lineno" > 608< / span >   < span class = "keywordtype" > int< / span > next_k = (k + 1) * k_factor - 1;< / div >
< div class = "line" > < a name = "l00609" > < / a > < span class = "lineno" > 609< / span >   < a class = "code" href = "structfaiss_1_1SemiSortedArray.html#a9b7e3826daa8964a3be0ea16b4abf608" > grow< / a > (next_k);< / div >
< div class = "line" > < a name = "l00610" > < / a > < span class = "lineno" > 610< / span >   }< / div >
< div class = "line" > < a name = "l00611" > < / a > < span class = "lineno" > 611< / span >   < span class = "keywordflow" > return< / span > x[perm[n]] - x[perm[n - 1]];< / div >
< div class = "line" > < a name = "l00612" > < / a > < span class = "lineno" > 612< / span >   }< / div >
< div class = "line" > < a name = "l00613" > < / a > < span class = "lineno" > 613< / span >   < / div >
< div class = "line" > < a name = "l00614" > < / a > < span class = "lineno" > 614< / span >   < span class = "comment" > // remap orders counted from smallest to indices in array< / span > < / div >
< div class = "line" > < a name = "l00615" > < / a > < span class = "lineno" > 615< / span >   < span class = "keywordtype" > int< / span > get_ord (< span class = "keywordtype" > int< / span > n) {< / div >
< div class = "line" > < a name = "l00616" > < / a > < span class = "lineno" > 616< / span >   assert (n < k);< / div >
< div class = "line" > < a name = "l00617" > < / a > < span class = "lineno" > 617< / span >   < span class = "keywordflow" > return< / span > perm[n];< / div >
< div class = "line" > < a name = "l00618" > < / a > < span class = "lineno" > 618< / span >   }< / div >
< div class = "line" > < a name = "l00619" > < / a > < span class = "lineno" > 619< / span >   };< / div >
< div class = "line" > < a name = "l00620" > < / a > < span class = "lineno" > 620< / 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 >   < / div >
< div class = "line" > < a name = "l00623" > < / a > < span class = "lineno" > 623< / span >   < span class = "comment" > /*****************************************< / span > < / div >
< div class = "line" > < a name = "l00624" > < / a > < span class = "lineno" > 624< / span >   < span class = "comment" > * Find the k smallest sums of M terms, where each term is taken in a< / span > < / div >
< div class = "line" > < a name = "l00625" > < / a > < span class = "lineno" > 625< / span >   < span class = "comment" > * table x of n values.< / span > < / div >
< div class = "line" > < a name = "l00626" > < / a > < span class = "lineno" > 626< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00627" > < / a > < span class = "lineno" > 627< / span >   < span class = "comment" > * A combination of terms is encoded as a scalar 0 < = t < n^M. The< / span > < / div >
< div class = "line" > < a name = "l00628" > < / a > < span class = "lineno" > 628< / span >   < span class = "comment" > * combination t0 ... t(M-1) that correspond to the sum< / span > < / div >
< div class = "line" > < a name = "l00629" > < / a > < span class = "lineno" > 629< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00630" > < / a > < span class = "lineno" > 630< / span >   < span class = "comment" > * sum = x[0, t0] + x[1, t1] + .... + x[M-1, t(M-1)]< / span > < / div >
< div class = "line" > < a name = "l00631" > < / a > < span class = "lineno" > 631< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00632" > < / a > < span class = "lineno" > 632< / span >   < span class = "comment" > * is encoded as< / span > < / div >
< div class = "line" > < a name = "l00633" > < / a > < span class = "lineno" > 633< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00634" > < / a > < span class = "lineno" > 634< / span >   < span class = "comment" > * t = t0 + t1 * n + t2 * n^2 + ... + t(M-1) * n^(M-1)< / span > < / div >
< div class = "line" > < a name = "l00635" > < / a > < span class = "lineno" > 635< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00636" > < / a > < span class = "lineno" > 636< / span >   < span class = "comment" > * MinSumK is an object rather than a function, so that storage can be< / span > < / div >
< div class = "line" > < a name = "l00637" > < / a > < span class = "lineno" > 637< / span >   < span class = "comment" > * re-used over several computations with the same sizes. use_seen is< / span > < / div >
< div class = "line" > < a name = "l00638" > < / a > < span class = "lineno" > 638< / span >   < span class = "comment" > * good when there may be ties in the x array and it is a concern if< / span > < / div >
< div class = "line" > < a name = "l00639" > < / a > < span class = "lineno" > 639< / span >   < span class = "comment" > * occasionally several t' s are returned.< / span > < / div >
< div class = "line" > < a name = "l00640" > < / a > < span class = "lineno" > 640< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00641" > < / a > < span class = "lineno" > 641< / span >   < span class = "comment" > * @param x size M * n, values to add up< / span > < / div >
< div class = "line" > < a name = "l00642" > < / a > < span class = "lineno" > 642< / span >   < span class = "comment" > * @parms k nb of results to retrieve< / span > < / div >
< div class = "line" > < a name = "l00643" > < / a > < span class = "lineno" > 643< / span >   < span class = "comment" > * @param M nb of terms< / span > < / div >
< div class = "line" > < a name = "l00644" > < / a > < span class = "lineno" > 644< / span >   < span class = "comment" > * @param n nb of distinct values< / span > < / div >
< div class = "line" > < a name = "l00645" > < / a > < span class = "lineno" > 645< / span >   < span class = "comment" > * @param sums output, size k, sorted< / span > < / div >
< div class = "line" > < a name = "l00646" > < / a > < span class = "lineno" > 646< / span >   < span class = "comment" > * @prarm terms output, size k, with encoding as above< / span > < / div >
< div class = "line" > < a name = "l00647" > < / a > < span class = "lineno" > 647< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00648" > < / a > < span class = "lineno" > 648< / span >   < span class = "comment" > ******************************************/< / span > < / div >
< div class = "line" > < a name = "l00649" > < / a > < span class = "lineno" > 649< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > T, < span class = "keyword" > class< / span > SSA, < span class = "keywordtype" > bool< / span > use_seen> < / div >
< div class = "line" > < a name = "l00650" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1MinSumK.html" > 650< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1MinSumK.html" > MinSumK< / a > {< / div >
< div class = "line" > < a name = "l00651" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1MinSumK.html#a6cf625ac4c6933775bca98a6ec283ec8" > 651< / a > < / span >   < span class = "keywordtype" > int< / span > < a class = "code" href = "structfaiss_1_1MinSumK.html#a6cf625ac4c6933775bca98a6ec283ec8" > K< / a > ; < span class = "comment" > ///< nb of sums to return< / span > < / div >
< div class = "line" > < a name = "l00652" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1MinSumK.html#a816976ee9baa0378b01d2f0fdaf4907a" > 652< / a > < / span >   < span class = "comment" > < / span > < span class = "keywordtype" > int< / span > < a class = "code" href = "structfaiss_1_1MinSumK.html#a816976ee9baa0378b01d2f0fdaf4907a" > M< / a > ; < span class = "comment" > ///< nb of elements to sum up< / span > < / div >
< div class = "line" > < a name = "l00653" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1MinSumK.html#a13f94071498f5a240b79e81346856658" > 653< / a > < / span >   < span class = "comment" > < / span > < span class = "keywordtype" > int< / span > < a class = "code" href = "structfaiss_1_1MinSumK.html#a13f94071498f5a240b79e81346856658" > N< / a > ; < span class = "comment" > ///< nb of possible elements for each of the M terms< / span > < / div >
< div class = "line" > < a name = "l00654" > < / a > < span class = "lineno" > 654< / span >   < span class = "comment" > < / span > < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00655" > < / a > < span class = "lineno" > 655< / span >   < span class = "comment" > /** the heap.< / span > < / div >
< div class = "line" > < a name = "l00656" > < / a > < span class = "lineno" > 656< / span >   < span class = "comment" > * We use a heap to maintain a queue of sums, with the associated< / span > < / div >
< div class = "line" > < a name = "l00657" > < / a > < span class = "lineno" > 657< / span >   < span class = "comment" > * terms involved in the sum.< / span > < / div >
< div class = "line" > < a name = "l00658" > < / a > < span class = "lineno" > 658< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00659" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1MinSumK.html#aa649f97b697150608b1874d88a613e92" > 659< / a > < / span >   < span class = "keyword" > typedef< / span > < a class = "code" href = "structfaiss_1_1CMin.html" > CMin< T, long> < / a > < a class = "code" href = "structfaiss_1_1MinSumK.html#aa649f97b697150608b1874d88a613e92" > HC< / a > ;< / div >
< div class = "line" > < a name = "l00660" > < / a > < span class = "lineno" > 660< / span >   < span class = "keywordtype" > size_t< / span > heap_capacity, heap_size;< / div >
< div class = "line" > < a name = "l00661" > < / a > < span class = "lineno" > 661< / span >   T *bh_val;< / div >
< div class = "line" > < a name = "l00662" > < / a > < span class = "lineno" > 662< / span >   < span class = "keywordtype" > long< / span > *bh_ids;< / 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 >   std::vector < SSA> ssx;< / div >
< div class = "line" > < a name = "l00665" > < / a > < span class = "lineno" > 665< / span >   std::vector < long> weights;< / div >
< div class = "line" > < a name = "l00666" > < / a > < span class = "lineno" > 666< / span >   < / div >
< div class = "line" > < a name = "l00667" > < / a > < span class = "lineno" > 667< / span >   < span class = "comment" > // all results get pushed several times. When there are ties, they< / span > < / div >
< div class = "line" > < a name = "l00668" > < / a > < span class = "lineno" > 668< / span >   < span class = "comment" > // are popped interleaved with others, so it is not easy to< / span > < / div >
< div class = "line" > < a name = "l00669" > < / a > < span class = "lineno" > 669< / span >   < span class = "comment" > // identify them. Therefore, this bit array just marks elements< / span > < / div >
< div class = "line" > < a name = "l00670" > < / a > < span class = "lineno" > 670< / span >   < span class = "comment" > // that were seen before.< / span > < / div >
< div class = "line" > < a name = "l00671" > < / a > < span class = "lineno" > 671< / span >   std::vector < uint8_t> seen;< / 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 >   < a class = "code" href = "structfaiss_1_1MinSumK.html" > MinSumK< / a > (< span class = "keywordtype" > int< / span > < a class = "code" href = "structfaiss_1_1MinSumK.html#a6cf625ac4c6933775bca98a6ec283ec8" > K< / a > , < span class = "keywordtype" > int< / span > M, < span class = "keywordtype" > int< / span > N): K(K), M(M), N(N) {< / div >
< div class = "line" > < a name = "l00674" > < / a > < span class = "lineno" > 674< / span >   heap_capacity = K * < a class = "code" href = "structfaiss_1_1MinSumK.html#a816976ee9baa0378b01d2f0fdaf4907a" > M< / a > ;< / div >
< div class = "line" > < a name = "l00675" > < / a > < span class = "lineno" > 675< / span >   < span class = "comment" > // we' ll do k steps, each step pushes at most M vals< / span > < / div >
< div class = "line" > < a name = "l00676" > < / a > < span class = "lineno" > 676< / span >   bh_val = < span class = "keyword" > new< / span > T[heap_capacity];< / div >
< div class = "line" > < a name = "l00677" > < / a > < span class = "lineno" > 677< / span >   bh_ids = < span class = "keyword" > new< / span > < span class = "keywordtype" > long< / span > [heap_capacity];< / 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 >   weights.push_back (1);< / div >
< div class = "line" > < a name = "l00680" > < / a > < span class = "lineno" > 680< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 1; m < < a class = "code" href = "structfaiss_1_1MinSumK.html#a816976ee9baa0378b01d2f0fdaf4907a" > M< / a > ; m++)< / div >
< div class = "line" > < a name = "l00681" > < / a > < span class = "lineno" > 681< / span >   weights.push_back(weights[m - 1] * N);< / div >
< div class = "line" > < a name = "l00682" > < / a > < span class = "lineno" > 682< / span >   < / div >
< div class = "line" > < a name = "l00683" > < / a > < span class = "lineno" > 683< / span >   < span class = "keywordflow" > if< / span > (use_seen) {< / div >
< div class = "line" > < a name = "l00684" > < / a > < span class = "lineno" > 684< / span >   < span class = "keywordtype" > long< / span > n_ids = weights.back() * < a class = "code" href = "structfaiss_1_1MinSumK.html#a13f94071498f5a240b79e81346856658" > N< / a > ;< / div >
< div class = "line" > < a name = "l00685" > < / a > < span class = "lineno" > 685< / span >   seen.resize ((n_ids + 7) / 8);< / 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 > (< span class = "keywordtype" > int< / span > m = 0; m < < a class = "code" href = "structfaiss_1_1MinSumK.html#a816976ee9baa0378b01d2f0fdaf4907a" > M< / a > ; m++)< / div >
< div class = "line" > < a name = "l00689" > < / a > < span class = "lineno" > 689< / span >   ssx.push_back (SSA(N));< / div >
< div class = "line" > < a name = "l00690" > < / a > < span class = "lineno" > 690< / span >   < / 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 >   < span class = "keywordtype" > bool< / span > is_seen (< span class = "keywordtype" > long< / span > i) {< / div >
< div class = "line" > < a name = "l00694" > < / a > < span class = "lineno" > 694< / span >   < span class = "keywordflow" > return< / span > (seen[i > > 3] > > (i & 7)) & 1;< / div >
< div class = "line" > < a name = "l00695" > < / a > < span class = "lineno" > 695< / span >   }< / div >
< div class = "line" > < a name = "l00696" > < / a > < span class = "lineno" > 696< / span >   < / div >
< div class = "line" > < a name = "l00697" > < / a > < span class = "lineno" > 697< / span >   < span class = "keywordtype" > void< / span > mark_seen (< span class = "keywordtype" > long< / span > i) {< / div >
< div class = "line" > < a name = "l00698" > < / a > < span class = "lineno" > 698< / span >   < span class = "keywordflow" > if< / span > (use_seen)< / div >
< div class = "line" > < a name = "l00699" > < / a > < span class = "lineno" > 699< / span >   seen [i > > 3] |= 1 < < (i & 7);< / 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 >   < span class = "keywordtype" > void< / span > run (< span class = "keyword" > const< / span > T *x, T * sums, < span class = "keywordtype" > long< / span > * terms) {< / div >
< div class = "line" > < a name = "l00703" > < / a > < span class = "lineno" > 703< / span >   heap_size = 0;< / div >
< div class = "line" > < a name = "l00704" > < / a > < span class = "lineno" > 704< / span >   < / div >
< div class = "line" > < a name = "l00705" > < / a > < span class = "lineno" > 705< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < < a class = "code" href = "structfaiss_1_1MinSumK.html#a816976ee9baa0378b01d2f0fdaf4907a" > M< / a > ; m++)< / div >
< div class = "line" > < a name = "l00706" > < / a > < span class = "lineno" > 706< / span >   ssx[m].init(x + N * m);< / 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 >   { < span class = "comment" > // intial result: take min for all elements< / span > < / div >
< div class = "line" > < a name = "l00709" > < / a > < span class = "lineno" > 709< / span >   T sum = 0;< / div >
< div class = "line" > < a name = "l00710" > < / a > < span class = "lineno" > 710< / span >   terms[0] = 0;< / div >
< div class = "line" > < a name = "l00711" > < / a > < span class = "lineno" > 711< / span >   mark_seen (0);< / div >
< div class = "line" > < a name = "l00712" > < / a > < span class = "lineno" > 712< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < < a class = "code" href = "structfaiss_1_1MinSumK.html#a816976ee9baa0378b01d2f0fdaf4907a" > M< / a > ; m++) {< / div >
< div class = "line" > < a name = "l00713" > < / a > < span class = "lineno" > 713< / span >   sum += ssx[m].get_0();< / div >
< div class = "line" > < a name = "l00714" > < / a > < span class = "lineno" > 714< / span >   }< / div >
< div class = "line" > < a name = "l00715" > < / a > < span class = "lineno" > 715< / span >   sums[0] = sum;< / div >
< div class = "line" > < a name = "l00716" > < / a > < span class = "lineno" > 716< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < < a class = "code" href = "structfaiss_1_1MinSumK.html#a816976ee9baa0378b01d2f0fdaf4907a" > M< / a > ; m++) {< / div >
< div class = "line" > < a name = "l00717" > < / a > < span class = "lineno" > 717< / span >   heap_push< HC> (++heap_size, bh_val, bh_ids,< / div >
< div class = "line" > < a name = "l00718" > < / a > < span class = "lineno" > 718< / span >   sum + ssx[m].get_diff(1),< / div >
< div class = "line" > < a name = "l00719" > < / a > < span class = "lineno" > 719< / span >   weights[m]);< / div >
< div class = "line" > < a name = "l00720" > < / a > < span class = "lineno" > 720< / span >   }< / 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 >   < / div >
< div class = "line" > < a name = "l00723" > < / a > < span class = "lineno" > 723< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > k = 1; k < < a class = "code" href = "structfaiss_1_1MinSumK.html#a6cf625ac4c6933775bca98a6ec283ec8" > K< / a > ; k++) {< / div >
< div class = "line" > < a name = "l00724" > < / a > < span class = "lineno" > 724< / span >   < span class = "comment" > // pop smallest value from heap< / span > < / div >
< div class = "line" > < a name = "l00725" > < / a > < span class = "lineno" > 725< / span >   < span class = "keywordflow" > if< / span > (use_seen) {< span class = "comment" > // skip already seen elements< / span > < / div >
< div class = "line" > < a name = "l00726" > < / a > < span class = "lineno" > 726< / span >   < span class = "keywordflow" > while< / span > (is_seen (bh_ids[0])) {< / div >
< div class = "line" > < a name = "l00727" > < / a > < span class = "lineno" > 727< / span >   assert (heap_size > 0);< / div >
< div class = "line" > < a name = "l00728" > < / a > < span class = "lineno" > 728< / span >   heap_pop< HC> (heap_size--, bh_val, bh_ids);< / div >
< div class = "line" > < a name = "l00729" > < / a > < span class = "lineno" > 729< / span >   }< / 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 >   assert (heap_size > 0);< / div >
< div class = "line" > < a name = "l00732" > < / a > < span class = "lineno" > 732< / span >   < / div >
< div class = "line" > < a name = "l00733" > < / a > < span class = "lineno" > 733< / span >   T sum = sums[k] = bh_val[0];< / div >
< div class = "line" > < a name = "l00734" > < / a > < span class = "lineno" > 734< / span >   < span class = "keywordtype" > long< / span > ti = terms[k] = bh_ids[0];< / div >
< div class = "line" > < a name = "l00735" > < / a > < span class = "lineno" > 735< / span >   < / div >
< div class = "line" > < a name = "l00736" > < / a > < span class = "lineno" > 736< / span >   < span class = "keywordflow" > if< / span > (use_seen) {< / div >
< div class = "line" > < a name = "l00737" > < / a > < span class = "lineno" > 737< / span >   mark_seen (ti);< / div >
< div class = "line" > < a name = "l00738" > < / a > < span class = "lineno" > 738< / span >   heap_pop< HC> (heap_size--, bh_val, bh_ids);< / div >
< div class = "line" > < a name = "l00739" > < / a > < span class = "lineno" > 739< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00740" > < / a > < span class = "lineno" > 740< / span >   < span class = "keywordflow" > do< / span > {< / div >
< div class = "line" > < a name = "l00741" > < / a > < span class = "lineno" > 741< / span >   heap_pop< HC> (heap_size--, bh_val, bh_ids);< / div >
< div class = "line" > < a name = "l00742" > < / a > < span class = "lineno" > 742< / span >   } < span class = "keywordflow" > while< / span > (heap_size > 0 & & bh_ids[0] == ti);< / div >
< div class = "line" > < a name = "l00743" > < / a > < span class = "lineno" > 743< / span >   }< / div >
< div class = "line" > < a name = "l00744" > < / a > < span class = "lineno" > 744< / span >   < / div >
< div class = "line" > < a name = "l00745" > < / a > < span class = "lineno" > 745< / span >   < span class = "comment" > // enqueue followers< / span > < / div >
< div class = "line" > < a name = "l00746" > < / a > < span class = "lineno" > 746< / span >   < span class = "keywordtype" > long< / span > ii = ti;< / div >
< div class = "line" > < a name = "l00747" > < / a > < span class = "lineno" > 747< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < < a class = "code" href = "structfaiss_1_1MinSumK.html#a816976ee9baa0378b01d2f0fdaf4907a" > M< / a > ; m++) {< / div >
< div class = "line" > < a name = "l00748" > < / a > < span class = "lineno" > 748< / span >   < span class = "keywordtype" > long< / span > n = ii % < a class = "code" href = "structfaiss_1_1MinSumK.html#a13f94071498f5a240b79e81346856658" > N< / a > ;< / div >
< div class = "line" > < a name = "l00749" > < / a > < span class = "lineno" > 749< / span >   ii /= < a class = "code" href = "structfaiss_1_1MinSumK.html#a13f94071498f5a240b79e81346856658" > N< / a > ;< / div >
< div class = "line" > < a name = "l00750" > < / a > < span class = "lineno" > 750< / span >   < span class = "keywordflow" > if< / span > (n + 1 > = N) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00751" > < / a > < span class = "lineno" > 751< / span >   < / div >
< div class = "line" > < a name = "l00752" > < / a > < span class = "lineno" > 752< / span >   enqueue_follower (ti, m, n, sum);< / div >
< div class = "line" > < a name = "l00753" > < / a > < span class = "lineno" > 753< / span >   }< / div >
< div class = "line" > < a name = "l00754" > < / a > < span class = "lineno" > 754< / span >   }< / 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 >   < span class = "comment" > /*< / span > < / div >
< div class = "line" > < a name = "l00757" > < / a > < span class = "lineno" > 757< / span >   < span class = "comment" > for (int k = 0; k < K; k++)< / span > < / div >
< div class = "line" > < a name = "l00758" > < / a > < span class = "lineno" > 758< / span >   < span class = "comment" > for (int l = k + 1; l < K; l++)< / span > < / div >
< div class = "line" > < a name = "l00759" > < / a > < span class = "lineno" > 759< / span >   < span class = "comment" > assert (terms[k] != terms[l]);< / span > < / div >
< div class = "line" > < a name = "l00760" > < / a > < span class = "lineno" > 760< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00761" > < / a > < span class = "lineno" > 761< / span >   < / div >
< div class = "line" > < a name = "l00762" > < / a > < span class = "lineno" > 762< / span >   < span class = "comment" > // convert indices by applying permutation< / span > < / div >
< div class = "line" > < a name = "l00763" > < / a > < span class = "lineno" > 763< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > k = 0; k < < a class = "code" href = "structfaiss_1_1MinSumK.html#a6cf625ac4c6933775bca98a6ec283ec8" > K< / a > ; k++) {< / div >
< div class = "line" > < a name = "l00764" > < / a > < span class = "lineno" > 764< / span >   < span class = "keywordtype" > long< / span > ii = terms[k];< / div >
< div class = "line" > < a name = "l00765" > < / a > < span class = "lineno" > 765< / span >   < span class = "keywordflow" > if< / span > (use_seen) {< / div >
< div class = "line" > < a name = "l00766" > < / a > < span class = "lineno" > 766< / span >   < span class = "comment" > // clear seen for reuse at next loop< / span > < / div >
< div class = "line" > < a name = "l00767" > < / a > < span class = "lineno" > 767< / span >   seen[ii > > 3] = 0;< / 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 >   < span class = "keywordtype" > long< / span > ti = 0;< / div >
< div class = "line" > < a name = "l00770" > < / a > < span class = "lineno" > 770< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < < a class = "code" href = "structfaiss_1_1MinSumK.html#a816976ee9baa0378b01d2f0fdaf4907a" > M< / a > ; m++) {< / div >
< div class = "line" > < a name = "l00771" > < / a > < span class = "lineno" > 771< / span >   < span class = "keywordtype" > long< / span > n = ii % < a class = "code" href = "structfaiss_1_1MinSumK.html#a13f94071498f5a240b79e81346856658" > N< / a > ;< / div >
< div class = "line" > < a name = "l00772" > < / a > < span class = "lineno" > 772< / span >   ti += weights[m] * ssx[m].get_ord(n);< / div >
< div class = "line" > < a name = "l00773" > < / a > < span class = "lineno" > 773< / span >   ii /= < a class = "code" href = "structfaiss_1_1MinSumK.html#a13f94071498f5a240b79e81346856658" > N< / a > ;< / div >
< div class = "line" > < a name = "l00774" > < / a > < span class = "lineno" > 774< / span >   }< / div >
< div class = "line" > < a name = "l00775" > < / a > < span class = "lineno" > 775< / span >   terms[k] = ti;< / div >
< div class = "line" > < a name = "l00776" > < / a > < span class = "lineno" > 776< / 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 >   < / 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" > void< / span > enqueue_follower (< span class = "keywordtype" > long< / span > ti, < span class = "keywordtype" > int< / span > m, < span class = "keywordtype" > int< / span > n, T sum) {< / div >
< div class = "line" > < a name = "l00781" > < / a > < span class = "lineno" > 781< / span >   T next_sum = sum + ssx[m].get_diff(n + 1);< / div >
< div class = "line" > < a name = "l00782" > < / a > < span class = "lineno" > 782< / span >   < span class = "keywordtype" > long< / span > next_ti = ti + weights[m];< / div >
< div class = "line" > < a name = "l00783" > < / a > < span class = "lineno" > 783< / span >   heap_push< HC> (++heap_size, bh_val, bh_ids, next_sum, next_ti);< / div >
< div class = "line" > < a name = "l00784" > < / a > < span class = "lineno" > 784< / span >   }< / div >
< div class = "line" > < a name = "l00785" > < / a > < span class = "lineno" > 785< / span >   < / div >
< div class = "line" > < a name = "l00786" > < / a > < span class = "lineno" > 786< / span >   < / div >
< div class = "line" > < a name = "l00787" > < / a > < span class = "lineno" > 787< / span >   ~MinSumK () {< / div >
< div class = "line" > < a name = "l00788" > < / a > < span class = "lineno" > 788< / span >   < span class = "keyword" > delete< / span > [] bh_ids;< / div >
< div class = "line" > < a name = "l00789" > < / a > < span class = "lineno" > 789< / span >   < span class = "keyword" > delete< / span > [] bh_val;< / 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 >   < / div >
< div class = "line" > < a name = "l00793" > < / a > < span class = "lineno" > 793< / span >   < / div >
< div class = "line" > < a name = "l00794" > < / a > < span class = "lineno" > 794< / span >   < / div >
< div class = "line" > < a name = "l00795" > < / a > < span class = "lineno" > 795< / span >   < / div >
< div class = "line" > < a name = "l00796" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1MultiIndexQuantizer.html#a01a568055ebc1e841f7e4218722efa01" > 796< / a > < / span >   MultiIndexQuantizer::MultiIndexQuantizer (< span class = "keywordtype" > int< / span > d,< / div >
< div class = "line" > < a name = "l00797" > < / a > < span class = "lineno" > 797< / span >   < span class = "keywordtype" > size_t< / span > M,< / div >
< div class = "line" > < a name = "l00798" > < / a > < span class = "lineno" > 798< / span >   < span class = "keywordtype" > size_t< / span > nbits):< / div >
< div class = "line" > < a name = "l00799" > < / a > < span class = "lineno" > 799< / span >   < a class = "code" href = "structfaiss_1_1Index.html" > Index< / a > (d, METRIC_L2), pq(d, M, nbits)< / div >
< div class = "line" > < a name = "l00800" > < / a > < span class = "lineno" > 800< / span >   {< / div >
< div class = "line" > < a name = "l00801" > < / a > < span class = "lineno" > 801< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00802" > < / a > < span class = "lineno" > 802< / span >   set_typename();< / div >
< div class = "line" > < a name = "l00803" > < / a > < span class = "lineno" > 803< / span >   }< / div >
< div class = "line" > < a name = "l00804" > < / a > < span class = "lineno" > 804< / span >   < / div >
< div class = "line" > < a name = "l00805" > < / a > < span class = "lineno" > 805< / span >   < / div >
< div class = "line" > < a name = "l00806" > < / a > < span class = "lineno" > 806< / span >   < span class = "keywordtype" > void< / span > MultiIndexQuantizer::set_typename()< / div >
< div class = "line" > < a name = "l00807" > < / a > < span class = "lineno" > 807< / span >   {< / div >
< div class = "line" > < a name = "l00808" > < / a > < span class = "lineno" > 808< / span >   std::stringstream s;< / div >
< div class = "line" > < a name = "l00809" > < / a > < span class = "lineno" > 809< / span >   s < < < span class = "stringliteral" > " MI_" < / span > < < pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > < < < span class = "stringliteral" > " x" < / span > < < pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5" > nbits< / a > ;< / div >
< div class = "line" > < a name = "l00810" > < / a > < span class = "lineno" > 810< / span >   index_typename = s.str();< / div >
< div class = "line" > < a name = "l00811" > < / a > < span class = "lineno" > 811< / span >   }< / div >
< div class = "line" > < a name = "l00812" > < / a > < span class = "lineno" > 812< / span >   < / div >
< div class = "line" > < a name = "l00813" > < / a > < span class = "lineno" > 813< / span >   < / div >
< div class = "line" > < a name = "l00814" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1MultiIndexQuantizer.html#ac7943184d37e953cb0c1ab589202afa8" > 814< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1MultiIndexQuantizer.html#ac7943184d37e953cb0c1ab589202afa8" > MultiIndexQuantizer::train< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< / 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 >   pq.train (n, x);< / div >
< div class = "line" > < a name = "l00817" > < / a > < span class = "lineno" > 817< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00818" > < / a > < span class = "lineno" > 818< / span >   < span class = "comment" > // count virtual elements in index< / span > < / div >
< div class = "line" > < a name = "l00819" > < / a > < span class = "lineno" > 819< / span >   ntotal = 1;< / div >
< div class = "line" > < a name = "l00820" > < / a > < span class = "lineno" > 820< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > ; m++)< / div >
< div class = "line" > < a name = "l00821" > < / a > < span class = "lineno" > 821< / span >   ntotal *= pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > ;< / 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 >   < / div >
< div class = "line" > < a name = "l00824" > < / a > < span class = "lineno" > 824< / span >   < / div >
< div class = "line" > < a name = "l00825" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1MultiIndexQuantizer.html#a078f1824235ee3199c5fdef3e84a1f52" > 825< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1MultiIndexQuantizer.html#a078f1824235ee3199c5fdef3e84a1f52" > MultiIndexQuantizer::search< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x, < a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > k,< / div >
< div class = "line" > < a name = "l00826" > < / a > < span class = "lineno" > 826< / span >   < span class = "keywordtype" > float< / span > *distances, < a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > *labels)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00827" > < / a > < span class = "lineno" > 827< / span >   < / div >
< div class = "line" > < a name = "l00828" > < / a > < span class = "lineno" > 828< / span >   < span class = "keywordtype" > float< / span > * dis_tables = < span class = "keyword" > new< / span > < span class = "keywordtype" > float< / span > [n * 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 = "l00829" > < / a > < span class = "lineno" > 829< / span >   < / div >
< div class = "line" > < a name = "l00830" > < / a > < span class = "lineno" > 830< / span >   pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a3521b9a36c28219fd6180cc7a9ce8207" > compute_distance_tables< / a > (n, x, dis_tables);< / div >
< div class = "line" > < a name = "l00831" > < / a > < span class = "lineno" > 831< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00832" > < / a > < span class = "lineno" > 832< / span >   < span class = "comment" > /// TODO: special version for k==1< / span > < / div >
< div class = "line" > < a name = "l00833" > < / a > < span class = "lineno" > 833< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00834" > < / a > < span class = "lineno" > 834< / span >   < span class = "preprocessor" > #pragma omp parallel< / span > < / div >
< div class = "line" > < a name = "l00835" > < / a > < span class = "lineno" > 835< / span >   < span class = "preprocessor" > < / span > {< / div >
< div class = "line" > < a name = "l00836" > < / a > < span class = "lineno" > 836< / span >   < a class = "code" href = "structfaiss_1_1MinSumK.html" > MinSumK < float, SemiSortedArray< float> < / a > , < span class = "keyword" > false< / span > > msk(k, 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 = "l00837" > < / a > < span class = "lineno" > 837< / span >   < span class = "preprocessor" > #pragma omp for< / span > < / div >
< div class = "line" > < a name = "l00838" > < / a > < span class = "lineno" > 838< / 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 = "l00839" > < / a > < span class = "lineno" > 839< / span >   msk.run (dis_tables + i * 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 = "l00840" > < / a > < span class = "lineno" > 840< / span >   distances + i * k, labels + i * k);< / 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 >   }< / div >
< div class = "line" > < a name = "l00843" > < / a > < span class = "lineno" > 843< / span >   }< / div >
< div class = "line" > < a name = "l00844" > < / a > < span class = "lineno" > 844< / span >   < span class = "keyword" > delete< / span > [] dis_tables;< / div >
< div class = "line" > < a name = "l00845" > < / a > < span class = "lineno" > 845< / span >   }< / 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" > < a class = "line" href = "structfaiss_1_1MultiIndexQuantizer.html#aa59a6252d445a6226aeab4ed8489d9d2" > 848< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1MultiIndexQuantizer.html#aa59a6252d445a6226aeab4ed8489d9d2" > MultiIndexQuantizer::reconstruct< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > key, < span class = "keywordtype" > float< / span > * recons)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00849" > < / a > < span class = "lineno" > 849< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00850" > < / a > < span class = "lineno" > 850< / span >   < span class = "keywordflow" > if< / span > (pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a13bf69a0dc7b4e45792d10f458e4a92d" > byte_per_idx< / a > == 1) {< / div >
< div class = "line" > < a name = "l00851" > < / a > < span class = "lineno" > 851< / span >   uint8_t code[pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > ];< / div >
< div class = "line" > < a name = "l00852" > < / a > < span class = "lineno" > 852< / span >   < span class = "keywordtype" > long< / span > jj = key;< / div >
< div class = "line" > < a name = "l00853" > < / a > < span class = "lineno" > 853< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > ; m++) {< / div >
< div class = "line" > < a name = "l00854" > < / a > < span class = "lineno" > 854< / span >   < span class = "keywordtype" > long< / span > n = jj % pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > ;< / div >
< div class = "line" > < a name = "l00855" > < / a > < span class = "lineno" > 855< / span >   jj /= pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > ;< / div >
< div class = "line" > < a name = "l00856" > < / a > < span class = "lineno" > 856< / span >   code[m] = n;< / div >
< div class = "line" > < a name = "l00857" > < / a > < span class = "lineno" > 857< / span >   }< / div >
< div class = "line" > < a name = "l00858" > < / a > < span class = "lineno" > 858< / span >   pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a7afbf9d96276f021981e99f064254208" > decode< / a > (code, recons);< / div >
< div class = "line" > < a name = "l00859" > < / a > < span class = "lineno" > 859< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a13bf69a0dc7b4e45792d10f458e4a92d" > byte_per_idx< / a > == 2) {< / div >
< div class = "line" > < a name = "l00860" > < / a > < span class = "lineno" > 860< / span >   uint16_t code[pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > ];< / div >
< div class = "line" > < a name = "l00861" > < / a > < span class = "lineno" > 861< / span >   < span class = "keywordtype" > long< / span > jj = key;< / div >
< div class = "line" > < a name = "l00862" > < / a > < span class = "lineno" > 862< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > ; m++) {< / div >
< div class = "line" > < a name = "l00863" > < / a > < span class = "lineno" > 863< / span >   < span class = "keywordtype" > long< / span > n = jj % pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > ;< / div >
< div class = "line" > < a name = "l00864" > < / a > < span class = "lineno" > 864< / span >   jj /= pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > ;< / div >
< div class = "line" > < a name = "l00865" > < / a > < span class = "lineno" > 865< / span >   code[m] = n;< / div >
< div class = "line" > < a name = "l00866" > < / a > < span class = "lineno" > 866< / span >   }< / div >
< div class = "line" > < a name = "l00867" > < / a > < span class = "lineno" > 867< / span >   pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a7afbf9d96276f021981e99f064254208" > decode< / a > ((uint8_t*)code, recons);< / div >
< div class = "line" > < a name = "l00868" > < / a > < span class = "lineno" > 868< / span >   } < span class = "keywordflow" > else< / span > FAISS_ASSERT(!< span class = "stringliteral" > " only 1 or 2 bytes per index supported" < / span > );< / div >
< div class = "line" > < a name = "l00869" > < / a > < span class = "lineno" > 869< / span >   }< / div >
< div class = "line" > < a name = "l00870" > < / a > < span class = "lineno" > 870< / span >   < / div >
< div class = "line" > < a name = "l00871" > < / a > < span class = "lineno" > 871< / span >   < / div >
< div class = "line" > < a name = "l00872" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1MultiIndexQuantizer.html#ad2d45625186b2daf6044f9266e6c1b93" > 872< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1MultiIndexQuantizer.html#ad2d45625186b2daf6044f9266e6c1b93" > MultiIndexQuantizer::add< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< / div >
< div class = "line" > < a name = "l00873" > < / a > < span class = "lineno" > 873< / span >   {< / div >
< div class = "line" > < a name = "l00874" > < / a > < span class = "lineno" > 874< / span >   FAISS_ASSERT (!< span class = "stringliteral" > " This index has virtual elements, it does not support add" < / span > );< / div >
< div class = "line" > < a name = "l00875" > < / a > < span class = "lineno" > 875< / span >   }< / div >
< div class = "line" > < a name = "l00876" > < / a > < span class = "lineno" > 876< / span >   < / div >
< div class = "line" > < a name = "l00877" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1MultiIndexQuantizer.html#a129efcd48371cbae124dee03b26a3176" > 877< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1MultiIndexQuantizer.html#a129efcd48371cbae124dee03b26a3176" > MultiIndexQuantizer::reset< / a > ()< / div >
< div class = "line" > < a name = "l00878" > < / a > < span class = "lineno" > 878< / span >   {< / div >
< div class = "line" > < a name = "l00879" > < / a > < span class = "lineno" > 879< / span >   FAISS_ASSERT (!< span class = "stringliteral" > " This index has virtual elements, " < / span > < / div >
< div class = "line" > < a name = "l00880" > < / a > < span class = "lineno" > 880< / span >   < span class = "stringliteral" > " it does not support reset" < / span > );< / div >
< div class = "line" > < a name = "l00881" > < / a > < span class = "lineno" > 881< / span >   }< / div >
< div class = "line" > < a name = "l00882" > < / a > < span class = "lineno" > 882< / span >   < / div >
< div class = "line" > < a name = "l00883" > < / a > < span class = "lineno" > 883< / span >   < / div >
< div class = "line" > < a name = "l00884" > < / a > < span class = "lineno" > 884< / span >   < / 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 >   } < span class = "comment" > // END namespace faiss< / span > < / div >
< div class = "ttc" id = "structfaiss_1_1MinSumK_html_a816976ee9baa0378b01d2f0fdaf4907a" > < div class = "ttname" > < a href = "structfaiss_1_1MinSumK.html#a816976ee9baa0378b01d2f0fdaf4907a" > faiss::MinSumK::M< / a > < / div > < div class = "ttdeci" > int M< / div > < div class = "ttdoc" > nb of elements to sum up < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00652" > IndexPQ.cpp:652< / 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#l00035" > IndexPQ.h:35< / 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#l00030" > ProductQuantizer.h:30< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a7afbf9d96276f021981e99f064254208" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a7afbf9d96276f021981e99f064254208" > faiss::ProductQuantizer::decode< / a > < / div > < div class = "ttdeci" > void decode(const uint8_t *code, float *x) const < / div > < div class = "ttdoc" > decode a vector from a given code (or n vectors if third argument) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8cpp_source.html#l00338" > ProductQuantizer.cpp:338< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a4fa05430935a02b62b7c15c9840c42fea903849f87cca2e7fbbfe034edbb81718" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea903849f87cca2e7fbbfe034edbb81718" > faiss::IndexPQ::ST_HE< / a > < / div > < div class = "ttdoc" > Hamming distance on codes. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00079" > IndexPQ.h:79< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_af616e1f3c7bff7f62c2607b8079da43f" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#af616e1f3c7bff7f62c2607b8079da43f" > faiss::IndexPQ::do_polysemous_training< / a > < / div > < div class = "ttdeci" > bool do_polysemous_training< / div > < div class = "ttdoc" > false = standard PQ < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00071" > IndexPQ.h:71< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a87898add5ab4d86ba901ca79778fc11e" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a87898add5ab4d86ba901ca79778fc11e" > faiss::IndexPQ::train< / a > < / div > < div class = "ttdeci" > virtual void train(idx_t n, const float *x) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00064" > IndexPQ.cpp:64< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a13bf69a0dc7b4e45792d10f458e4a92d" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a13bf69a0dc7b4e45792d10f458e4a92d" > faiss::ProductQuantizer::byte_per_idx< / a > < / div > < div class = "ttdeci" > size_t byte_per_idx< / div > < div class = "ttdoc" > nb bytes per code component (1 or 2) < / 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_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#l00049" > Heap.h:49< / a > < / div > < / div >
< div class = "ttc" id = "namespacefaiss_html_a7c5553442c8b9342a0ad449e2b67f275" > < div class = "ttname" > < a href = "namespacefaiss.html#a7c5553442c8b9342a0ad449e2b67f275" > faiss::partial_sort< / a > < / div > < div class = "ttdeci" > void partial_sort(int k, int n, const typename C::T *vals, typename C::TI *perm)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00528" > IndexPQ.cpp:528< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1MinSumK_html" > < div class = "ttname" > < a href = "structfaiss_1_1MinSumK.html" > faiss::MinSumK< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00650" > IndexPQ.cpp:650< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1MinSumK_html_aa649f97b697150608b1874d88a613e92" > < div class = "ttname" > < a href = "structfaiss_1_1MinSumK.html#aa649f97b697150608b1874d88a613e92" > faiss::MinSumK::HC< / a > < / div > < div class = "ttdeci" > CMin< T, long > HC< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00659" > IndexPQ.cpp:659< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ArgSort_html" > < div class = "ttname" > < a href = "structfaiss_1_1ArgSort.html" > faiss::ArgSort< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00476" > IndexPQ.cpp:476< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1SemiSortedArray_html_a9b7e3826daa8964a3be0ea16b4abf608" > < div class = "ttname" > < a href = "structfaiss_1_1SemiSortedArray.html#a9b7e3826daa8964a3be0ea16b4abf608" > faiss::SemiSortedArray::grow< / a > < / div > < div class = "ttdeci" > void grow(int next_k)< / div > < div class = "ttdoc" > grow the sorted part of the array to size next_k < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00588" > IndexPQ.cpp:588< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1SemiSortedArray_html" > < div class = "ttname" > < a href = "structfaiss_1_1SemiSortedArray.html" > faiss::SemiSortedArray< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00559" > IndexPQ.cpp:559< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a3521b9a36c28219fd6180cc7a9ce8207" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a3521b9a36c28219fd6180cc7a9ce8207" > faiss::ProductQuantizer::compute_distance_tables< / a > < / div > < div class = "ttdeci" > void compute_distance_tables(size_t nx, const float *x, float *dis_tables) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8cpp_source.html#l00439" > ProductQuantizer.cpp:439< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1SortedArray_html" > < div class = "ttname" > < a href = "structfaiss_1_1SortedArray.html" > faiss::SortedArray< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00488" > IndexPQ.cpp:488< / a > < / div > < / div >
2017-02-25 00:32:08 +08:00
< div class = "ttc" id = "namespacefaiss_html_ae81da42f6f40356f7525917b3acb54c8" > < div class = "ttname" > < a href = "namespacefaiss.html#ae81da42f6f40356f7525917b3acb54c8" > faiss::generalized_hammings_knn< / a > < / div > < div class = "ttdeci" > void generalized_hammings_knn(int_maxheap_array_t *ha, const uint8_t *a, const uint8_t *b, size_t nb, size_t code_size, int ordered)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8cpp_source.html#l00635" > hamming.cpp:635< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a95060fedd7c09eb20e968fd2fdb4b316" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a95060fedd7c09eb20e968fd2fdb4b316" > faiss::ProductQuantizer::compute_code_from_distance_table< / a > < / div > < div class = "ttdeci" > void compute_code_from_distance_table(const float *tab, uint8_t *code) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8cpp_source.html#l00363" > ProductQuantizer.cpp:363< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_ae5a340ee5a4b1d35a565b167de2a2ef1" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#ae5a340ee5a4b1d35a565b167de2a2ef1" > faiss::ProductQuantizer::compute_codes< / a > < / div > < div class = "ttdeci" > void compute_codes(const float *x, uint8_t *codes, size_t n) const < / div > < div class = "ttdoc" > same as compute_code for several vectors < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8cpp_source.html#l00385" > ProductQuantizer.cpp:385< / 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#l00066" > Index.h:66< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_ada06f5db85c91a4c140119a5897c6064" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#ada06f5db85c91a4c140119a5897c6064" > faiss::IndexPQ::hamming_distance_histogram< / a > < / div > < div class = "ttdeci" > void hamming_distance_histogram(idx_t n, const float *x, idx_t nb, const float *xb, long *dist_histogram)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00394" > IndexPQ.cpp:394< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a1ae7892a15b9f6809a3ba1a123a7831b" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a1ae7892a15b9f6809a3ba1a123a7831b" > faiss::ProductQuantizer::search< / a > < / div > < div class = "ttdeci" > void search(const float *x, size_t nx, const uint8_t *codes, const size_t ncodes, float_maxheap_array_t *res, bool init_finalize_heap=true) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8cpp_source.html#l00540" > ProductQuantizer.cpp:540< / a > < / div > < / div >
< 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#l00035" > ProductQuantizer.h:35< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a4fa05430935a02b62b7c15c9840c42feaef79af61798670a362434b7bc9ced45e" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42feaef79af61798670a362434b7bc9ced45e" > faiss::IndexPQ::ST_polysemous_generalize< / a > < / div > < div class = "ttdoc" > Filter on generalized Hamming. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00083" > IndexPQ.h:83< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1MultiIndexQuantizer_html_a129efcd48371cbae124dee03b26a3176" > < div class = "ttname" > < a href = "structfaiss_1_1MultiIndexQuantizer.html#a129efcd48371cbae124dee03b26a3176" > faiss::MultiIndexQuantizer::reset< / a > < / div > < div class = "ttdeci" > virtual void reset()< / div > < div class = "ttdoc" > removes all elements from the database. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00877" > IndexPQ.cpp:877< / 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#l00036" > ProductQuantizer.h:36< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HeapArray_html" > < div class = "ttname" > < a href = "structfaiss_1_1HeapArray.html" > faiss::HeapArray< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Heap_8h_source.html#l00351" > Heap.h:351< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a66be226806ca2abcaaf1653cdc690aa6" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a66be226806ca2abcaaf1653cdc690aa6" > faiss::ProductQuantizer::search_ip< / a > < / div > < div class = "ttdeci" > void search_ip(const float *x, size_t nx, const uint8_t *codes, const size_t ncodes, float_minheap_array_t *res, bool init_finalize_heap=true) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8cpp_source.html#l00564" > ProductQuantizer.cpp:564< / 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#l00064" > Index.h:64< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1MultiIndexQuantizer_html_ac7943184d37e953cb0c1ab589202afa8" > < div class = "ttname" > < a href = "structfaiss_1_1MultiIndexQuantizer.html#ac7943184d37e953cb0c1ab589202afa8" > faiss::MultiIndexQuantizer::train< / a > < / div > < div class = "ttdeci" > virtual void train(idx_t n, const float *x)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00814" > IndexPQ.cpp:814< / a > < / div > < / div >
2017-02-25 00:32:08 +08:00
< div class = "ttc" id = "namespacefaiss_html_ac0b4dc73a8470d61f510396dc460ca18" > < div class = "ttname" > < a href = "namespacefaiss.html#ac0b4dc73a8470d61f510396dc460ca18" > faiss::hammings_knn< / a > < / div > < div class = "ttdeci" > void hammings_knn(int_maxheap_array_t *ha, const uint8_t *a, const uint8_t *b, size_t nb, size_t ncodes, int order)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8cpp_source.html#l00475" > hamming.cpp:475< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
< div class = "ttc" id = "structfaiss_1_1MultiIndexQuantizer_html_ad2d45625186b2daf6044f9266e6c1b93" > < div class = "ttname" > < a href = "structfaiss_1_1MultiIndexQuantizer.html#ad2d45625186b2daf6044f9266e6c1b93" > faiss::MultiIndexQuantizer::add< / a > < / div > < div class = "ttdeci" > virtual void add(idx_t n, const float *x)< / div > < div class = "ttdoc" > add and reset will crash at runtime < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00872" > IndexPQ.cpp:872< / 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#l00032" > IndexPQ.h:32< / 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#l00067" > Index.h:67< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_a5590d847c5c2b958affd2a05e58a6f23" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23" > faiss::Index::verbose< / a > < / div > < div class = "ttdeci" > bool verbose< / div > < div class = "ttdoc" > verbosity level < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00068" > Index.h:68< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_ac72c9b93f8fe7e5ec27fbe26bb38a7bf" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#ac72c9b93f8fe7e5ec27fbe26bb38a7bf" > faiss::IndexPQ::add< / a > < / div > < div class = "ttdeci" > virtual void add(idx_t n, const float *x) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00088" > IndexPQ.cpp:88< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a4fa05430935a02b62b7c15c9840c42fea237afca36629dae511c0ac56effbfaa6" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea237afca36629dae511c0ac56effbfaa6" > faiss::IndexPQ::ST_generalized_HE< / a > < / div > < div class = "ttdoc" > nb of same codes < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00080" > IndexPQ.h:80< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1MinSumK_html_a6cf625ac4c6933775bca98a6ec283ec8" > < div class = "ttname" > < a href = "structfaiss_1_1MinSumK.html#a6cf625ac4c6933775bca98a6ec283ec8" > faiss::MinSumK::K< / a > < / div > < div class = "ttdeci" > int K< / div > < div class = "ttdoc" > nb of sums to return < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00651" > IndexPQ.cpp:651< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_aa131767383619bb5848b131502ada9cf" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#aa131767383619bb5848b131502ada9cf" > faiss::IndexPQ::hamming_distance_table< / a > < / div > < div class = "ttdeci" > void hamming_distance_table(idx_t n, const float *x, int32_t *dis) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00381" > IndexPQ.cpp:381< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1MultiIndexQuantizer_html_a078f1824235ee3199c5fdef3e84a1f52" > < div class = "ttname" > < a href = "structfaiss_1_1MultiIndexQuantizer.html#a078f1824235ee3199c5fdef3e84a1f52" > faiss::MultiIndexQuantizer::search< / a > < / div > < div class = "ttdeci" > virtual void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00825" > IndexPQ.cpp:825< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a20913df3bfd8caa5187112641e8d9bc7" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a20913df3bfd8caa5187112641e8d9bc7" > faiss::IndexPQ::reconstruct< / a > < / div > < div class = "ttdeci" > virtual void reconstruct(idx_t key, float *recons) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00114" > IndexPQ.cpp:114< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_a8e18f641854b2bde83ecff0a2f9a6f4e" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e" > faiss::Index::metric_type< / a > < / div > < div class = "ttdeci" > MetricType metric_type< / div > < div class = "ttdoc" > type of metric this index uses for search < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00074" > Index.h:74< / 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#l00029" > ProductQuantizer.h:29< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1MinSumK_html_a13f94071498f5a240b79e81346856658" > < div class = "ttname" > < a href = "structfaiss_1_1MinSumK.html#a13f94071498f5a240b79e81346856658" > faiss::MinSumK::N< / a > < / div > < div class = "ttdeci" > int N< / div > < div class = "ttdoc" > nb of possible elements for each of the M terms < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00653" > IndexPQ.cpp:653< / 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#l00061" > Index.h:61< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a99b187b1231a700617f7b228ec348ade" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a99b187b1231a700617f7b228ec348ade" > faiss::IndexPQ::reconstruct_n< / a > < / div > < div class = "ttdeci" > virtual void reconstruct_n(idx_t i0, idx_t ni, float *recons) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00104" > IndexPQ.cpp:104< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a4fa05430935a02b62b7c15c9840c42fea00f77a4f8209c30c3ef37ccfd3d0c10a" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea00f77a4f8209c30c3ef37ccfd3d0c10a" > faiss::IndexPQ::ST_PQ< / a > < / div > < div class = "ttdoc" > asymmetric product quantizer (default) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00078" > IndexPQ.h:78< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a4fa05430935a02b62b7c15c9840c42feaf06a0e6b53f9cbe1c791c6912169b738" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42feaf06a0e6b53f9cbe1c791c6912169b738" > faiss::IndexPQ::ST_polysemous< / a > < / div > < div class = "ttdoc" > HE filter (using ht) + PQ combination. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00082" > IndexPQ.h:82< / 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#l00071" > Index.h:71< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a25e17da885cf55d84b176b46f3ad25b1" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a25e17da885cf55d84b176b46f3ad25b1" > faiss::IndexPQ::reset< / a > < / div > < div class = "ttdeci" > virtual void reset() override< / div > < div class = "ttdoc" > removes all elements from the database. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00098" > IndexPQ.cpp:98< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1MultiIndexQuantizer_html_aa59a6252d445a6226aeab4ed8489d9d2" > < div class = "ttname" > < a href = "structfaiss_1_1MultiIndexQuantizer.html#aa59a6252d445a6226aeab4ed8489d9d2" > faiss::MultiIndexQuantizer::reconstruct< / a > < / div > < div class = "ttdeci" > virtual void reconstruct(idx_t key, float *recons) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00848" > IndexPQ.cpp:848< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1PolysemousTraining_html_a995374ba2f0bc2738edae72ca9142f82" > < div class = "ttname" > < a href = "structfaiss_1_1PolysemousTraining.html#a995374ba2f0bc2738edae72ca9142f82" > faiss::PolysemousTraining::optimize_pq_for_hamming< / a > < / div > < div class = "ttdeci" > void optimize_pq_for_hamming(ProductQuantizer & pq, size_t n, const float *x) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00945" > PolysemousTraining.cpp:945< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a491ba3ed34093513e6a850fbca0abdd2" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a491ba3ed34093513e6a850fbca0abdd2" > faiss::IndexPQ::search< / a > < / div > < div class = "ttdeci" > virtual void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8cpp_source.html#l00134" > IndexPQ.cpp:134< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a4fa05430935a02b62b7c15c9840c42fea4287cbc83d1d5f0d1a02f014e5fe692c" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea4287cbc83d1d5f0d1a02f014e5fe692c" > faiss::IndexPQ::ST_SDC< / a > < / div > < div class = "ttdoc" > symmetric product quantizer (SDC) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00081" > IndexPQ.h:81< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_aff455f2adff6064939494dad6e3017bc" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#aff455f2adff6064939494dad6e3017bc" > faiss::IndexPQ::polysemous_ht< / a > < / div > < div class = "ttdeci" > int polysemous_ht< / div > < div class = "ttdoc" > Hamming threshold used for polysemy. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00093" > IndexPQ.h:93< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPQ_html_a820cec27d1ef14bf59fb288b2e143b6a" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPQ.html#a820cec27d1ef14bf59fb288b2e143b6a" > faiss::IndexPQ::polysemous_training< / a > < / div > < div class = "ttdeci" > PolysemousTraining polysemous_training< / div > < div class = "ttdoc" > parameters used for the polysemous training < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexPQ_8h_source.html#l00074" > IndexPQ.h:74< / a > < / div > < / div >
< div class = "ttc" id = "namespacefaiss_html_afd12191c638da74760ff397cf319752c" > < div class = "ttname" > < a href = "namespacefaiss.html#afd12191c638da74760ff397cf319752c" > faiss::MetricType< / a > < / div > < div class = "ttdeci" > MetricType< / div > < div class = "ttdoc" > Some algorithms support both an inner product vetsion and a L2 search version. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00044" > Index.h:44< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1CMin_html" > < div class = "ttname" > < a href = "structfaiss_1_1CMin.html" > faiss::CMin< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Heap_8h_source.html#l00054" > Heap.h:54< / a > < / div > < / div >
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