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2017-02-23 06:26:44 +08:00
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< div class = "title" > /data/users/matthijs/github_faiss/faiss/VectorTransform.cpp< / div > < / div >
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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" > * Copyright (c) 2015-present, Facebook, Inc.< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > * All rights reserved.< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / span >   < span class = "comment" > * This source code is licensed under the CC-by-NC license found in the< / span > < / div >
< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < span class = "comment" > * LICENSE file in the root directory of this source tree.< / span > < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "comment" > // Copyright 2004-present Facebook. All Rights Reserved< / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "comment" > // -*- c++ -*-< / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #include " VectorTransform.h" < / 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 < cstdio> < / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "preprocessor" > #include < cmath> < / span > < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #include < cstring> < / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "preprocessor" > #include " utils.h" < / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "preprocessor" > #include " FaissAssert.h" < / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "preprocessor" > #include " IndexPQ.h" < / span > < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "keyword" > using namespace < / span > faiss;< / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < / div >
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< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < / div >
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< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "keyword" > extern< / span > < span class = "stringliteral" > " C" < / span > {< / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "comment" > // this is to keep the clang syntax checker happy< / span > < / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "preprocessor" > #ifndef FINTEGER< / span > < / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < span class = "preprocessor" > < / span > < span class = "preprocessor" > #define FINTEGER int< / span > < / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "preprocessor" > < / span > < span class = "preprocessor" > #endif< / span > < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < span class = "preprocessor" > < / 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" > 33< / span >   < span class = "comment" > /* declare BLAS functions, see http://www.netlib.org/clapack/cblas/ */< / span > < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "keywordtype" > int< / span > sgemm_ (< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *transa, < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *transb, FINTEGER *m, FINTEGER *< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   n, FINTEGER *k, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *alpha, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *a,< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   FINTEGER *lda, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *b,< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   FINTEGER *ldb, < span class = "keywordtype" > float< / span > *beta,< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < span class = "keywordtype" > float< / span > *c, FINTEGER *ldc);< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < span class = "keywordtype" > int< / span > ssyrk_ (< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *uplo, < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *trans, FINTEGER *n, FINTEGER *k,< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   < span class = "keywordtype" > float< / span > *alpha, < span class = "keywordtype" > float< / span > *a, FINTEGER *lda,< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < span class = "keywordtype" > float< / span > *beta, < span class = "keywordtype" > float< / span > *c, FINTEGER *ldc);< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < span class = "comment" > /* Lapack functions from http://www.netlib.org/clapack/old/single/ */< / span > < / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "keywordtype" > int< / span > ssyev_ (< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *jobz, < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *uplo, FINTEGER *n, < span class = "keywordtype" > float< / span > *a,< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   FINTEGER *lda, < span class = "keywordtype" > float< / span > *w, < span class = "keywordtype" > float< / span > *work, FINTEGER *lwork,< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   FINTEGER *info);< / 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 >   < span class = "keywordtype" > int< / span > dsyev_ (< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *jobz, < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *uplo, FINTEGER *n, < span class = "keywordtype" > double< / span > *a,< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   FINTEGER *lda, < span class = "keywordtype" > double< / span > *w, < span class = "keywordtype" > double< / span > *work, FINTEGER *lwork,< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   FINTEGER *info);< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "keywordtype" > int< / span > sgesvd_(< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *jobu, < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *jobvt, FINTEGER *m, FINTEGER *n,< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "keywordtype" > float< / span > *a, FINTEGER *lda, < span class = "keywordtype" > float< / span > *s, < span class = "keywordtype" > float< / span > *u, FINTEGER *ldu, < span class = "keywordtype" > float< / span > *vt,< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   FINTEGER *ldvt, < span class = "keywordtype" > float< / span > *work, FINTEGER *lwork, FINTEGER *info);< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   }< / div >
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< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < / div >
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< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "comment" > /*********************************************< / span > < / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < span class = "comment" > * VectorTransform< / span > < / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < span class = "comment" > *********************************************/< / span > < / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < / 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 >   < / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1VectorTransform.html#af3b3a8bf95911f4b28128001c83f91a5" > 72< / a > < / span >   < span class = "keywordtype" > float< / span > * < a class = "code" href = "structfaiss_1_1VectorTransform.html#af3b3a8bf95911f4b28128001c83f91a5" > VectorTransform::apply< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > Index::idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * x)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < span class = "keywordtype" > float< / span > * xt = < span class = "keyword" > new< / span > < span class = "keywordtype" > float< / span > [n * < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ];< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < a class = "code" href = "structfaiss_1_1VectorTransform.html#a90f1a218c224c049f1bd8b77a78d6aa0" > apply_noalloc< / a > (n, x, xt);< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   < span class = "keywordflow" > return< / span > xt;< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   }< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   < / div >
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< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < / div >
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< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1VectorTransform.html#a7350d4dd28d60866d55ba4f75d2da84c" > 80< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1VectorTransform.html#a7350d4dd28d60866d55ba4f75d2da84c" > VectorTransform::train< / a > (idx_t, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *) {< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < span class = "comment" > // does nothing by default< / span > < / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   }< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   < / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1VectorTransform.html#a101ce54f1c60df19478801aa942470d9" > 85< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1VectorTransform.html#a101ce54f1c60df19478801aa942470d9" > VectorTransform::reverse_transform< / a > (< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   idx_t , < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *,< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   < span class = "keywordtype" > float< / span > *)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   FAISS_THROW_MSG (< span class = "stringliteral" > " reverse transform not implemented" < / span > );< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   }< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < / 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 >   < span class = "comment" > /*********************************************< / span > < / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "comment" > * LinearTransform< / span > < / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "comment" > *********************************************/< / span > < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "comment" > /// both d_in > d_out and d_out < d_in are supported< / span > < / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1LinearTransform.html#a2fffd6064defb7c3fdaf143c0c4a9bc7" > 99< / a > < / span >   < span class = "comment" > < / span > < a class = "code" href = "structfaiss_1_1LinearTransform.html#a2fffd6064defb7c3fdaf143c0c4a9bc7" > LinearTransform::LinearTransform< / a > (< span class = "keywordtype" > int< / span > d_in, < span class = "keywordtype" > int< / span > d_out,< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < span class = "keywordtype" > bool< / span > have_bias):< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < a class = "code" href = "structfaiss_1_1VectorTransform.html" > VectorTransform< / a > (d_in, d_out), have_bias (have_bias),< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   verbose (false)< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   {}< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   < / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1LinearTransform.html#af9c20b4ae67691b5713489884ca9f80f" > 105< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1LinearTransform.html#af9c20b4ae67691b5713489884ca9f80f" > LinearTransform::apply_noalloc< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > Index::idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * x,< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < span class = "keywordtype" > float< / span > * xt)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   FAISS_THROW_IF_NOT_MSG(< a class = "code" href = "structfaiss_1_1VectorTransform.html#ab511f1ddf608c00204555881ca28cb02" > is_trained< / a > , < span class = "stringliteral" > " Transformation not trained yet" < / span > );< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   < span class = "keywordtype" > float< / span > c_factor;< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < span class = "keywordflow" > if< / span > (have_bias) {< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   FAISS_THROW_IF_NOT_MSG (< a class = "code" href = "structfaiss_1_1LinearTransform.html#ab0383f690aeb823876e9143febad1a87" > b< / a > .size() == < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > , < span class = "stringliteral" > " Bias not initialized" < / span > );< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < span class = "keywordtype" > float< / span > * xi = xt;< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++)< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; j++)< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   *xi++ = < a class = "code" href = "structfaiss_1_1LinearTransform.html#ab0383f690aeb823876e9143febad1a87" > b< / a > [j];< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   c_factor = 1.0;< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   c_factor = 0.0;< / 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 >   FAISS_THROW_IF_NOT_MSG (< a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .size() == < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > * d_in,< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < span class = "stringliteral" > " Transformation matrix not initialized" < / 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 >   < span class = "keywordtype" > float< / span > one = 1;< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   FINTEGER nbiti = < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > , ni = n, di = d_in;< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   sgemm_ (< span class = "stringliteral" > " Transposed" < / span > , < span class = "stringliteral" > " Not transposed" < / span > ,< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   & nbiti, & ni, & di,< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   & one, < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .data(), & di, x, & di, & c_factor, xt, & nbiti);< / 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_1LinearTransform.html#a1642efca4f5eb524c29722b0441c4d13" > 134< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1LinearTransform.html#a1642efca4f5eb524c29722b0441c4d13" > LinearTransform::transform_transpose< / a > (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * y,< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   < span class = "keywordtype" > float< / span > *x)< 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 >   < span class = "keywordflow" > if< / span > (have_bias) { < span class = "comment" > // allocate buffer to store bias-corrected data< / span > < / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   < span class = "keywordtype" > float< / span > *y_new = < span class = "keyword" > new< / span > < span class = "keywordtype" > float< / span > [n * < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ];< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *yr = y;< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < span class = "keywordtype" > float< / span > *yw = y_new;< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "keywordflow" > for< / span > (idx_t i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; j++) {< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   *yw++ = *yr++ - < a class = "code" href = "structfaiss_1_1LinearTransform.html#ab0383f690aeb823876e9143febad1a87" > b< / a > [j];< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   }< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   }< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   y = y_new;< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / 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 >   {< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   FINTEGER dii = d_in, doi = < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > , ni = n;< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < span class = "keywordtype" > float< / span > one = 1.0, zero = 0.0;< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   sgemm_ (< span class = "stringliteral" > " Not" < / span > , < span class = "stringliteral" > " Not" < / span > , & dii, & ni, & doi,< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   & one, < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .data (), & dii, y, & doi, & zero, x, & dii);< / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   }< / div >
2017-03-21 01:33:21 +08:00
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < span class = "keywordflow" > if< / span > (have_bias) < span class = "keyword" > delete< / span > [] y;< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   }< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   < / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   < span class = "comment" > /*********************************************< / span > < / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   < span class = "comment" > * RandomRotationMatrix< / span > < / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   < span class = "comment" > *********************************************/< / span > < / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   < / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1RandomRotationMatrix.html#a857ad8c32fb76b3298d4eea4338ff66f" > 164< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1RandomRotationMatrix.html#a857ad8c32fb76b3298d4eea4338ff66f" > RandomRotationMatrix::init< / a > (< span class = "keywordtype" > int< / span > seed)< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   {< / 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 >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > < = d_in) {< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .resize (< a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > * d_in);< / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   < span class = "keywordtype" > float< / span > *q = < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .data();< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   float_randn(q, < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > * d_in, seed);< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   < a class = "code" href = "namespacefaiss.html#afb68fe89ad5e948974da1b70d7b4157c" > matrix_qr< / a > (d_in, < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > , q);< / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .resize (< a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > * < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > );< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   < span class = "keywordtype" > float< / span > *q = < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .data();< / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   float_randn(q, d_out * d_out, seed);< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   < a class = "code" href = "namespacefaiss.html#afb68fe89ad5e948974da1b70d7b4157c" > matrix_qr< / a > (d_out, d_out, q);< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   < span class = "comment" > // remove columns< / span > < / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   < span class = "keywordtype" > int< / span > i, j;< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < span class = "keywordflow" > for< / span > (i = 0; i < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; i++) {< / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < span class = "keywordflow" > for< / span > (j = 0; j < d_in; j++) {< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   q[i * d_in + j] = q[i * d_out + j];< / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   }< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   }< / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .resize(d_in * d_out);< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / 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 >   }< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   < / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1RandomRotationMatrix.html#a3ad86e9ae3bdc2090c1f5fc62a335c16" > 189< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1RandomRotationMatrix.html#a3ad86e9ae3bdc2090c1f5fc62a335c16" > RandomRotationMatrix::reverse_transform< / a > (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * xt,< / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#a1642efca4f5eb524c29722b0441c4d13" > transform_transpose< / a > (n, xt, x);< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   }< / div >
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< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   < / div >
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< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < span class = "comment" > /*********************************************< / span > < / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   < span class = "comment" > * PCAMatrix< / span > < / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < span class = "comment" > *********************************************/< / span > < / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   < / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   PCAMatrix::PCAMatrix (< span class = "keywordtype" > int< / span > d_in, < span class = "keywordtype" > int< / span > d_out,< / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   < span class = "keywordtype" > float< / span > eigen_power, < span class = "keywordtype" > bool< / span > random_rotation):< / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html" > LinearTransform< / a > (d_in, d_out, true),< / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   eigen_power(eigen_power), random_rotation(random_rotation)< / 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 >   < a class = "code" href = "structfaiss_1_1VectorTransform.html#ab511f1ddf608c00204555881ca28cb02" > is_trained< / a > = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   max_points_per_d = 1000;< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   balanced_bins = 0;< / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   }< / div >
< div class = "line" > < a name = "l00208" > < / a > < span class = "lineno" > 208< / span >   < / div >
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< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   < / div >
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< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   < span class = "comment" > /// Compute the eigenvalue decomposition of symmetric matrix cov,< / span > < / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   < span class = "comment" > /// dimensions d_in-by-d_in. Output eigenvectors in cov.< / span > < / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   < span class = "keywordtype" > void< / span > eig(< span class = "keywordtype" > size_t< / span > d_in, < span class = "keywordtype" > double< / span > *cov, < span class = "keywordtype" > double< / span > *eigenvalues, < span class = "keywordtype" > int< / span > verbose)< / 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 >   { < span class = "comment" > // compute eigenvalues and vectors< / span > < / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   FINTEGER info = 0, lwork = -1, di = d_in;< / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   < span class = "keywordtype" > double< / span > workq;< / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   < / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   dsyev_ (< span class = "stringliteral" > " Vectors as well" < / span > , < span class = "stringliteral" > " Upper" < / span > ,< / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   & di, cov, & di, eigenvalues, & workq, & lwork, & info);< / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   lwork = FINTEGER(workq);< / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   < span class = "keywordtype" > double< / span > *work = < span class = "keyword" > new< / span > < span class = "keywordtype" > double< / span > [lwork];< / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   < / div >
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   dsyev_ (< span class = "stringliteral" > " Vectors as well" < / span > , < span class = "stringliteral" > " Upper" < / span > ,< / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   & di, cov, & di, eigenvalues, work, & lwork, & info);< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   < / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   < span class = "keyword" > delete< / span > [] work;< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   < / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   < span class = "keywordflow" > if< / span > (info != 0) {< / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   fprintf (stderr, < span class = "stringliteral" > " WARN ssyev info returns %d, " < / span > < / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   < span class = "stringliteral" > " a very bad PCA matrix is learnt\n" < / span > ,< / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   < span class = "keywordtype" > int< / span > (info));< / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   < span class = "comment" > // do not throw exception, as the matrix could still be useful< / span > < / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   }< / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   < / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   < / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   < span class = "keywordflow" > if< / span > (verbose & & d_in < = 10) {< / div >
< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   printf(< span class = "stringliteral" > " info=%ld new eigvals=[" < / span > , < span class = "keywordtype" > long< / span > (info));< / div >
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++) printf(< span class = "stringliteral" > " %g " < / span > , eigenvalues[j]);< / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   printf(< span class = "stringliteral" > " ]\n" < / span > );< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   < / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   < span class = "keywordtype" > double< / span > *ci = cov;< / div >
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   printf(< span class = "stringliteral" > " eigenvecs=\n" < / span > );< / div >
< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > 246< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < d_in; i++) {< / div >
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   printf(< span class = "stringliteral" > " %10.4g " < / span > , *ci++);< / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00250" > < / a > < span class = "lineno" > 250< / span >   }< / div >
< div class = "line" > < a name = "l00251" > < / a > < span class = "lineno" > 251< / span >   }< / 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 >   }< / div >
< div class = "line" > < a name = "l00254" > < / a > < span class = "lineno" > 254< / span >   < / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   < span class = "comment" > // revert order of eigenvectors & values< / span > < / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   < / div >
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < d_in / 2; i++) {< / 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 >   std::swap(eigenvalues[i], eigenvalues[d_in - 1 - i]);< / div >
< div class = "line" > < a name = "l00260" > < / a > < span class = "lineno" > 260< / span >   < span class = "keywordtype" > double< / span > *v1 = cov + i * d_in;< / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   < span class = "keywordtype" > double< / span > *v2 = cov + (d_in - 1 - i) * d_in;< / div >
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   std::swap(v1[j], v2[j]);< / 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 >   < / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   }< / div >
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< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   < / div >
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< 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 >
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< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   < / div >
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< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1PCAMatrix.html#a8f2dd12da8dce3cbeb22da9c5d4ec3e7" > 271< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a8f2dd12da8dce3cbeb22da9c5d4ec3e7" > PCAMatrix::train< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > Index::idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   {< / div >
< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * x_in = x;< / div >
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   < / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   x = < a class = "code" href = "namespacefaiss.html#a14884d253128c7af5891a65082ad7dc6" > fvecs_maybe_subsample< / a > (d_in, (< span class = "keywordtype" > size_t< / span > *)& n,< / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   < a class = "code" href = "structfaiss_1_1PCAMatrix.html#abdce90f57a3c4401f5230f03da901e0d" > max_points_per_d< / a > * d_in, x, verbose);< / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   < / div >
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< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del_x (x != x_in ? x : < span class = "keyword" > nullptr< / span > );< / div >
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< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   < / div >
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< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   < span class = "comment" > // compute mean< / span > < / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > mean< / a > .clear(); < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > mean< / a > .resize(d_in, 0.0);< / div >
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   < span class = "keywordflow" > if< / span > (have_bias) { < span class = "comment" > // we may want to skip the bias< / span > < / div >
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *xi = x;< / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > mean< / a > [j] += *xi++;< / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   }< / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00289" > < / a > < span class = "lineno" > 289< / span >   < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > mean< / a > [j] /= n;< / div >
< div class = "line" > < a name = "l00290" > < / a > < span class = "lineno" > 290< / span >   }< / div >
< div class = "line" > < a name = "l00291" > < / a > < span class = "lineno" > 291< / span >   < span class = "keywordflow" > if< / span > (verbose) {< / div >
< div class = "line" > < a name = "l00292" > < / a > < span class = "lineno" > 292< / span >   printf(< span class = "stringliteral" > " mean=[" < / span > );< / div >
< div class = "line" > < a name = "l00293" > < / a > < span class = "lineno" > 293< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++) printf(< span class = "stringliteral" > " %g " < / span > , < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > mean< / a > [j]);< / div >
< div class = "line" > < a name = "l00294" > < / a > < span class = "lineno" > 294< / span >   printf(< span class = "stringliteral" > " ]\n" < / span > );< / div >
< div class = "line" > < a name = "l00295" > < / a > < span class = "lineno" > 295< / span >   }< / div >
< div class = "line" > < a name = "l00296" > < / a > < span class = "lineno" > 296< / span >   < / div >
< div class = "line" > < a name = "l00297" > < / a > < span class = "lineno" > 297< / span >   < span class = "keywordflow" > if< / span > (n > = d_in) {< / div >
< div class = "line" > < a name = "l00298" > < / a > < span class = "lineno" > 298< / span >   < span class = "comment" > // compute covariance matrix, store it in PCA matrix< / span > < / div >
< div class = "line" > < a name = "l00299" > < / a > < span class = "lineno" > 299< / span >   < a class = "code" href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > PCAMat< / a > .resize(d_in * d_in);< / div >
< div class = "line" > < a name = "l00300" > < / a > < span class = "lineno" > 300< / span >   < span class = "keywordtype" > float< / span > * cov = < a class = "code" href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > PCAMat< / a > .data();< / div >
< div class = "line" > < a name = "l00301" > < / a > < span class = "lineno" > 301< / span >   { < span class = "comment" > // initialize with mean * mean^T term< / span > < / div >
< div class = "line" > < a name = "l00302" > < / a > < span class = "lineno" > 302< / span >   < span class = "keywordtype" > float< / span > *ci = cov;< / div >
< div class = "line" > < a name = "l00303" > < / a > < span class = "lineno" > 303< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < d_in; i++) {< / div >
< div class = "line" > < a name = "l00304" > < / a > < span class = "lineno" > 304< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00305" > < / a > < span class = "lineno" > 305< / span >   *ci++ = - n * < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > mean< / a > [i] * < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > mean< / a > [j];< / 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 >   }< / 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 >   FINTEGER di = d_in, ni = n;< / div >
< div class = "line" > < a name = "l00310" > < / a > < span class = "lineno" > 310< / span >   < span class = "keywordtype" > float< / span > one = 1.0;< / div >
< div class = "line" > < a name = "l00311" > < / a > < span class = "lineno" > 311< / span >   ssyrk_ (< span class = "stringliteral" > " Up" < / span > , < span class = "stringliteral" > " Non transposed" < / span > ,< / div >
< div class = "line" > < a name = "l00312" > < / a > < span class = "lineno" > 312< / span >   & di, & ni, & one, (< span class = "keywordtype" > float< / span > *)x, & di, & one, cov, & di);< / div >
< div class = "line" > < a name = "l00313" > < / a > < span class = "lineno" > 313< / span >   < / div >
< div class = "line" > < a name = "l00314" > < / a > < span class = "lineno" > 314< / span >   }< / div >
< div class = "line" > < a name = "l00315" > < / a > < span class = "lineno" > 315< / span >   < span class = "keywordflow" > if< / span > (verbose & & d_in < = 10) {< / div >
< div class = "line" > < a name = "l00316" > < / a > < span class = "lineno" > 316< / span >   < span class = "keywordtype" > float< / span > *ci = cov;< / div >
< div class = "line" > < a name = "l00317" > < / a > < span class = "lineno" > 317< / span >   printf(< span class = "stringliteral" > " cov=\n" < / span > );< / div >
< div class = "line" > < a name = "l00318" > < / a > < span class = "lineno" > 318< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < d_in; i++) {< / div >
< div class = "line" > < a name = "l00319" > < / a > < span class = "lineno" > 319< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00320" > < / a > < span class = "lineno" > 320< / span >   printf(< span class = "stringliteral" > " %10g " < / span > , *ci++);< / div >
< div class = "line" > < a name = "l00321" > < / a > < span class = "lineno" > 321< / span >   printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00322" > < / a > < span class = "lineno" > 322< / span >   }< / div >
< div class = "line" > < a name = "l00323" > < / a > < span class = "lineno" > 323< / span >   }< / div >
< div class = "line" > < a name = "l00324" > < / a > < span class = "lineno" > 324< / span >   < / div >
< div class = "line" > < a name = "l00325" > < / a > < span class = "lineno" > 325< / span >   std::vector< double> covd (d_in * d_in);< / div >
< div class = "line" > < a name = "l00326" > < / a > < span class = "lineno" > 326< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < d_in * d_in; i++) covd [i] = cov [i];< / div >
< div class = "line" > < a name = "l00327" > < / a > < span class = "lineno" > 327< / span >   < / div >
< div class = "line" > < a name = "l00328" > < / a > < span class = "lineno" > 328< / span >   std::vector< double> eigenvaluesd (d_in);< / div >
< div class = "line" > < a name = "l00329" > < / a > < span class = "lineno" > 329< / span >   < / div >
< div class = "line" > < a name = "l00330" > < / a > < span class = "lineno" > 330< / span >   eig (d_in, covd.data (), eigenvaluesd.data (), verbose);< / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00331" > < / a > < span class = "lineno" > 331< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00332" > < / a > < span class = "lineno" > 332< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < d_in * d_in; i++) < a class = "code" href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > PCAMat< / a > [i] = covd [i];< / div >
< div class = "line" > < a name = "l00333" > < / a > < span class = "lineno" > 333< / span >   eigenvalues.resize (d_in);< / div >
< div class = "line" > < a name = "l00334" > < / a > < span class = "lineno" > 334< / span >   < / div >
< div class = "line" > < a name = "l00335" > < / a > < span class = "lineno" > 335< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < d_in; i++)< / div >
< div class = "line" > < a name = "l00336" > < / a > < span class = "lineno" > 336< / span >   eigenvalues [i] = eigenvaluesd [i];< / div >
< div class = "line" > < a name = "l00337" > < / a > < span class = "lineno" > 337< / 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 >   < / div >
< div class = "line" > < a name = "l00341" > < / a > < span class = "lineno" > 341< / span >   std::vector< float> xc (n * d_in);< / div >
< div class = "line" > < a name = "l00342" > < / a > < span class = "lineno" > 342< / span >   < / div >
< div class = "line" > < a name = "l00343" > < / a > < span class = "lineno" > 343< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < n; i++)< / div >
< div class = "line" > < a name = "l00344" > < / a > < span class = "lineno" > 344< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00345" > < / a > < span class = "lineno" > 345< / span >   xc [i * d_in + j] = x [i * d_in + j] - < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > mean< / a > [j];< / div >
< div class = "line" > < a name = "l00346" > < / a > < span class = "lineno" > 346< / span >   < / div >
< div class = "line" > < a name = "l00347" > < / a > < span class = "lineno" > 347< / span >   < span class = "comment" > // compute Gram matrix< / span > < / div >
< div class = "line" > < a name = "l00348" > < / a > < span class = "lineno" > 348< / span >   std::vector< float> gram (n * n);< / div >
< div class = "line" > < a name = "l00349" > < / a > < span class = "lineno" > 349< / span >   {< / div >
< div class = "line" > < a name = "l00350" > < / a > < span class = "lineno" > 350< / span >   FINTEGER di = d_in, ni = n;< / div >
< div class = "line" > < a name = "l00351" > < / a > < span class = "lineno" > 351< / span >   < span class = "keywordtype" > float< / span > one = 1.0, zero = 0.0;< / div >
< div class = "line" > < a name = "l00352" > < / a > < span class = "lineno" > 352< / span >   ssyrk_ (< span class = "stringliteral" > " Up" < / span > , < span class = "stringliteral" > " Transposed" < / span > ,< / div >
< div class = "line" > < a name = "l00353" > < / a > < span class = "lineno" > 353< / span >   & ni, & di, & one, xc.data(), & di, & zero, gram.data(), & ni);< / div >
< div class = "line" > < a name = "l00354" > < / a > < span class = "lineno" > 354< / span >   }< / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00355" > < / a > < span class = "lineno" > 355< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00356" > < / a > < span class = "lineno" > 356< / span >   < span class = "keywordflow" > if< / span > (verbose & & d_in < = 10) {< / div >
< div class = "line" > < a name = "l00357" > < / a > < span class = "lineno" > 357< / span >   < span class = "keywordtype" > float< / span > *ci = gram.data();< / div >
< div class = "line" > < a name = "l00358" > < / a > < span class = "lineno" > 358< / span >   printf(< span class = "stringliteral" > " gram=\n" < / span > );< / div >
< div class = "line" > < a name = "l00359" > < / a > < span class = "lineno" > 359< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00360" > < / a > < span class = "lineno" > 360< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < n; j++)< / div >
< div class = "line" > < a name = "l00361" > < / a > < span class = "lineno" > 361< / span >   printf(< span class = "stringliteral" > " %10g " < / span > , *ci++);< / div >
< div class = "line" > < a name = "l00362" > < / a > < span class = "lineno" > 362< / span >   printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00363" > < / a > < span class = "lineno" > 363< / span >   }< / div >
< div class = "line" > < a name = "l00364" > < / a > < span class = "lineno" > 364< / span >   }< / 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 >   std::vector< double> gramd (n * n);< / div >
< div class = "line" > < a name = "l00367" > < / a > < span class = "lineno" > 367< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < n * n; i++)< / div >
< div class = "line" > < a name = "l00368" > < / a > < span class = "lineno" > 368< / span >   gramd [i] = gram [i];< / 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 >   std::vector< double> eigenvaluesd (n);< / 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 >   < span class = "comment" > // eig will fill in only the n first eigenvals< / span > < / div >
2017-03-21 01:33:21 +08:00
< div class = "line" > < a name = "l00373" > < / a > < span class = "lineno" > 373< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00374" > < / a > < span class = "lineno" > 374< / span >   eig (n, gramd.data (), eigenvaluesd.data (), verbose);< / div >
< div class = "line" > < a name = "l00375" > < / a > < span class = "lineno" > 375< / span >   < / div >
< div class = "line" > < a name = "l00376" > < / a > < span class = "lineno" > 376< / span >   < a class = "code" href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > PCAMat< / a > .resize(d_in * d_in);< / 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 >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < n * n; i++)< / div >
< div class = "line" > < a name = "l00379" > < / a > < span class = "lineno" > 379< / span >   gram [i] = gramd [i];< / div >
< div class = "line" > < a name = "l00380" > < / a > < span class = "lineno" > 380< / span >   < / div >
< div class = "line" > < a name = "l00381" > < / a > < span class = "lineno" > 381< / span >   eigenvalues.resize (d_in);< / div >
< div class = "line" > < a name = "l00382" > < / a > < span class = "lineno" > 382< / span >   < span class = "comment" > // fill in only the n first ones< / span > < / div >
< div class = "line" > < a name = "l00383" > < / a > < span class = "lineno" > 383< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < n; i++)< / div >
< div class = "line" > < a name = "l00384" > < / a > < span class = "lineno" > 384< / span >   eigenvalues [i] = eigenvaluesd [i];< / 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 >   { < span class = "comment" > // compute PCAMat = x' * v< / span > < / div >
< div class = "line" > < a name = "l00387" > < / a > < span class = "lineno" > 387< / span >   FINTEGER di = d_in, ni = n;< / div >
2017-07-18 17:43:35 +08:00
< div class = "line" > < a name = "l00388" > < / a > < span class = "lineno" > 388< / span >   < span class = "keywordtype" > float< / span > one = 1.0;< / div >
2017-06-21 21:54:28 +08:00
< 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 >   sgemm_ (< span class = "stringliteral" > " Non" < / span > , < span class = "stringliteral" > " Non Trans" < / span > ,< / div >
< div class = "line" > < a name = "l00391" > < / a > < span class = "lineno" > 391< / span >   & di, & ni, & ni,< / div >
< div class = "line" > < a name = "l00392" > < / a > < span class = "lineno" > 392< / span >   & one, xc.data(), & di, gram.data(), & ni,< / div >
< div class = "line" > < a name = "l00393" > < / a > < span class = "lineno" > 393< / span >   & one, < a class = "code" href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > PCAMat< / a > .data(), & di);< / div >
< div class = "line" > < a name = "l00394" > < / a > < span class = "lineno" > 394< / span >   }< / div >
< div class = "line" > < a name = "l00395" > < / a > < span class = "lineno" > 395< / span >   < / div >
< div class = "line" > < a name = "l00396" > < / a > < span class = "lineno" > 396< / span >   < / div >
< div class = "line" > < a name = "l00397" > < / a > < span class = "lineno" > 397< / span >   < span class = "keywordflow" > if< / span > (verbose & & d_in < = 10) {< / div >
< div class = "line" > < a name = "l00398" > < / a > < span class = "lineno" > 398< / span >   < span class = "keywordtype" > float< / span > *ci = < a class = "code" href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > PCAMat< / a > .data();< / div >
< div class = "line" > < a name = "l00399" > < / a > < span class = "lineno" > 399< / span >   printf(< span class = "stringliteral" > " PCAMat=\n" < / span > );< / div >
< div class = "line" > < a name = "l00400" > < / a > < span class = "lineno" > 400< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00401" > < / a > < span class = "lineno" > 401< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00402" > < / a > < span class = "lineno" > 402< / span >   printf(< span class = "stringliteral" > " %10g " < / span > , *ci++);< / div >
< div class = "line" > < a name = "l00403" > < / a > < span class = "lineno" > 403< / span >   printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00404" > < / a > < span class = "lineno" > 404< / span >   }< / div >
< div class = "line" > < a name = "l00405" > < / a > < span class = "lineno" > 405< / span >   }< / div >
< div class = "line" > < a name = "l00406" > < / a > < span class = "lineno" > 406< / span >   fvec_renorm_L2 (d_in, n, < a class = "code" href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > PCAMat< / a > .data());< / 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 >   }< / div >
< div class = "line" > < a name = "l00409" > < / a > < span class = "lineno" > 409< / span >   < / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00410" > < / a > < span class = "lineno" > 410< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00411" > < / a > < span class = "lineno" > 411< / span >   < / div >
< div class = "line" > < a name = "l00412" > < / a > < span class = "lineno" > 412< / span >   < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a117a70b8fca6d125725fe49fddebf97b" > prepare_Ab< / a > ();< / div >
< div class = "line" > < a name = "l00413" > < / a > < span class = "lineno" > 413< / span >   < a class = "code" href = "structfaiss_1_1VectorTransform.html#ab511f1ddf608c00204555881ca28cb02" > is_trained< / a > = < span class = "keyword" > true< / span > ;< / 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 >   < / div >
< div class = "line" > < a name = "l00416" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1PCAMatrix.html#ae586dc89db6c57753c687473417742a6" > 416< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1PCAMatrix.html#ae586dc89db6c57753c687473417742a6" > PCAMatrix::copy_from< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1PCAMatrix.html" > PCAMatrix< / a > & other)< / div >
< div class = "line" > < a name = "l00417" > < / a > < span class = "lineno" > 417< / span >   {< / div >
< div class = "line" > < a name = "l00418" > < / a > < span class = "lineno" > 418< / span >   FAISS_THROW_IF_NOT (other.< a class = "code" href = "structfaiss_1_1VectorTransform.html#ab511f1ddf608c00204555881ca28cb02" > is_trained< / a > );< / div >
< div class = "line" > < a name = "l00419" > < / a > < span class = "lineno" > 419< / span >   < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > mean< / a > = other.< a class = "code" href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > mean< / a > ;< / div >
< div class = "line" > < a name = "l00420" > < / a > < span class = "lineno" > 420< / span >   eigenvalues = other.< a class = "code" href = "structfaiss_1_1PCAMatrix.html#ae80e130c0667b66cea608c4926d7d561" > eigenvalues< / a > ;< / div >
< div class = "line" > < a name = "l00421" > < / a > < span class = "lineno" > 421< / span >   < a class = "code" href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > PCAMat< / a > = other.< a class = "code" href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > PCAMat< / a > ;< / div >
< div class = "line" > < a name = "l00422" > < / a > < span class = "lineno" > 422< / span >   < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a117a70b8fca6d125725fe49fddebf97b" > prepare_Ab< / a > ();< / div >
< div class = "line" > < a name = "l00423" > < / a > < span class = "lineno" > 423< / span >   < a class = "code" href = "structfaiss_1_1VectorTransform.html#ab511f1ddf608c00204555881ca28cb02" > is_trained< / a > = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00424" > < / a > < span class = "lineno" > 424< / span >   }< / div >
< div class = "line" > < a name = "l00425" > < / a > < span class = "lineno" > 425< / span >   < / div >
< div class = "line" > < a name = "l00426" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1PCAMatrix.html#a117a70b8fca6d125725fe49fddebf97b" > 426< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a117a70b8fca6d125725fe49fddebf97b" > PCAMatrix::prepare_Ab< / a > ()< / div >
< div class = "line" > < a name = "l00427" > < / a > < span class = "lineno" > 427< / span >   {< / div >
< div class = "line" > < a name = "l00428" > < / a > < span class = "lineno" > 428< / span >   < / div >
< div class = "line" > < a name = "l00429" > < / a > < span class = "lineno" > 429< / span >   < span class = "keywordflow" > if< / span > (!< a class = "code" href = "structfaiss_1_1PCAMatrix.html#af111f055b7571703a3aa270d89e99321" > random_rotation< / a > ) {< / div >
< div class = "line" > < a name = "l00430" > < / a > < span class = "lineno" > 430< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > = < a class = "code" href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > PCAMat< / a > ;< / div >
< div class = "line" > < a name = "l00431" > < / a > < span class = "lineno" > 431< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .resize(< a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > * d_in); < span class = "comment" > // strip off useless dimensions< / span > < / 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 = "comment" > // first scale the components< / span > < / div >
< div class = "line" > < a name = "l00434" > < / a > < span class = "lineno" > 434< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1PCAMatrix.html#a4e48e801f98ba2cf57c03b0913d6fafc" > eigen_power< / a > != 0) {< / div >
< div class = "line" > < a name = "l00435" > < / a > < span class = "lineno" > 435< / span >   < span class = "keywordtype" > float< / span > *ai = < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .data();< / div >
< div class = "line" > < a name = "l00436" > < / a > < span class = "lineno" > 436< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; i++) {< / div >
< div class = "line" > < a name = "l00437" > < / a > < span class = "lineno" > 437< / span >   < span class = "keywordtype" > float< / span > factor = pow(eigenvalues[i], < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a4e48e801f98ba2cf57c03b0913d6fafc" > eigen_power< / a > );< / div >
< div class = "line" > < a name = "l00438" > < / a > < span class = "lineno" > 438< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00439" > < / a > < span class = "lineno" > 439< / span >   *ai++ *= factor;< / 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 >   }< / div >
< div class = "line" > < a name = "l00442" > < / a > < span class = "lineno" > 442< / span >   < / div >
< div class = "line" > < a name = "l00443" > < / a > < span class = "lineno" > 443< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1PCAMatrix.html#ac9a4c97b5861081dfd8ca5881bb1a677" > balanced_bins< / a > != 0) {< / div >
< div class = "line" > < a name = "l00444" > < / a > < span class = "lineno" > 444< / span >   FAISS_THROW_IF_NOT (< a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > % < a class = "code" href = "structfaiss_1_1PCAMatrix.html#ac9a4c97b5861081dfd8ca5881bb1a677" > balanced_bins< / a > == 0);< / div >
< div class = "line" > < a name = "l00445" > < / a > < span class = "lineno" > 445< / span >   < span class = "keywordtype" > int< / span > dsub = < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > / < a class = "code" href = "structfaiss_1_1PCAMatrix.html#ac9a4c97b5861081dfd8ca5881bb1a677" > balanced_bins< / a > ;< / div >
< div class = "line" > < a name = "l00446" > < / a > < span class = "lineno" > 446< / span >   std::vector < float> Ain;< / div >
< div class = "line" > < a name = "l00447" > < / a > < span class = "lineno" > 447< / span >   std::swap(< a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > , Ain);< / div >
< div class = "line" > < a name = "l00448" > < / a > < span class = "lineno" > 448< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .resize(< a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > * d_in);< / div >
2017-03-21 01:33:21 +08:00
< div class = "line" > < a name = "l00449" > < / a > < span class = "lineno" > 449< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00450" > < / a > < span class = "lineno" > 450< / span >   std::vector < float> accu(< a class = "code" href = "structfaiss_1_1PCAMatrix.html#ac9a4c97b5861081dfd8ca5881bb1a677" > balanced_bins< / a > );< / div >
< div class = "line" > < a name = "l00451" > < / a > < span class = "lineno" > 451< / span >   std::vector < int> counter(< a class = "code" href = "structfaiss_1_1PCAMatrix.html#ac9a4c97b5861081dfd8ca5881bb1a677" > balanced_bins< / a > );< / div >
2017-03-21 01:33:21 +08:00
< div class = "line" > < a name = "l00452" > < / a > < span class = "lineno" > 452< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00453" > < / a > < span class = "lineno" > 453< / span >   < span class = "comment" > // greedy assignment< / span > < / div >
< div class = "line" > < a name = "l00454" > < / a > < span class = "lineno" > 454< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; i++) {< / div >
< div class = "line" > < a name = "l00455" > < / a > < span class = "lineno" > 455< / span >   < span class = "comment" > // find best bin< / span > < / div >
< div class = "line" > < a name = "l00456" > < / a > < span class = "lineno" > 456< / span >   < span class = "keywordtype" > int< / span > best_j = -1;< / div >
< div class = "line" > < a name = "l00457" > < / a > < span class = "lineno" > 457< / span >   < span class = "keywordtype" > float< / span > min_w = 1e30;< / div >
< div class = "line" > < a name = "l00458" > < / a > < span class = "lineno" > 458< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < < a class = "code" href = "structfaiss_1_1PCAMatrix.html#ac9a4c97b5861081dfd8ca5881bb1a677" > balanced_bins< / a > ; j++) {< / div >
< div class = "line" > < a name = "l00459" > < / a > < span class = "lineno" > 459< / span >   < span class = "keywordflow" > if< / span > (counter[j] < dsub & & accu[j] < min_w) {< / div >
< div class = "line" > < a name = "l00460" > < / a > < span class = "lineno" > 460< / span >   min_w = accu[j];< / div >
< div class = "line" > < a name = "l00461" > < / a > < span class = "lineno" > 461< / span >   best_j = j;< / 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 >   < span class = "keywordtype" > int< / span > row_dst = best_j * dsub + counter[best_j];< / div >
< div class = "line" > < a name = "l00465" > < / a > < span class = "lineno" > 465< / span >   accu[best_j] += eigenvalues[i];< / div >
< div class = "line" > < a name = "l00466" > < / a > < span class = "lineno" > 466< / span >   counter[best_j] ++;< / div >
< div class = "line" > < a name = "l00467" > < / a > < span class = "lineno" > 467< / span >   memcpy (& < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > [row_dst * d_in], & Ain[i * d_in],< / div >
< div class = "line" > < a name = "l00468" > < / a > < span class = "lineno" > 468< / span >   d_in * < span class = "keyword" > sizeof< / span > (< a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > [0]));< / div >
< div class = "line" > < a name = "l00469" > < / a > < span class = "lineno" > 469< / span >   }< / div >
< div class = "line" > < a name = "l00470" > < / a > < span class = "lineno" > 470< / span >   < / div >
< div class = "line" > < a name = "l00471" > < / a > < span class = "lineno" > 471< / span >   < span class = "keywordflow" > if< / span > (verbose) {< / div >
< div class = "line" > < a name = "l00472" > < / a > < span class = "lineno" > 472< / span >   printf(< span class = "stringliteral" > " bin accu=[" < / span > );< / div >
< div class = "line" > < a name = "l00473" > < / a > < span class = "lineno" > 473< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1PCAMatrix.html#ac9a4c97b5861081dfd8ca5881bb1a677" > balanced_bins< / a > ; i++)< / div >
< div class = "line" > < a name = "l00474" > < / a > < span class = "lineno" > 474< / span >   printf(< span class = "stringliteral" > " %g " < / span > , accu[i]);< / div >
< div class = "line" > < a name = "l00475" > < / a > < span class = "lineno" > 475< / span >   printf(< span class = "stringliteral" > " ]\n" < / span > );< / div >
< div class = "line" > < a name = "l00476" > < / a > < span class = "lineno" > 476< / span >   }< / div >
< div class = "line" > < a name = "l00477" > < / a > < span class = "lineno" > 477< / span >   }< / div >
< div class = "line" > < a name = "l00478" > < / a > < span class = "lineno" > 478< / span >   < / div >
< div class = "line" > < a name = "l00479" > < / a > < span class = "lineno" > 479< / span >   < / div >
< div class = "line" > < a name = "l00480" > < / a > < span class = "lineno" > 480< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00481" > < / a > < span class = "lineno" > 481< / span >   FAISS_THROW_IF_NOT_MSG (< a class = "code" href = "structfaiss_1_1PCAMatrix.html#ac9a4c97b5861081dfd8ca5881bb1a677" > balanced_bins< / a > == 0,< / div >
< div class = "line" > < a name = "l00482" > < / a > < span class = "lineno" > 482< / span >   < span class = "stringliteral" > " both balancing bins and applying a random rotation " < / span > < / div >
< div class = "line" > < a name = "l00483" > < / a > < span class = "lineno" > 483< / span >   < span class = "stringliteral" > " does not make sense" < / span > );< / div >
< div class = "line" > < a name = "l00484" > < / a > < span class = "lineno" > 484< / span >   < a class = "code" href = "structfaiss_1_1RandomRotationMatrix.html" > RandomRotationMatrix< / a > rr(< a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > , < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > );< / div >
< div class = "line" > < a name = "l00485" > < / a > < span class = "lineno" > 485< / span >   < / div >
< div class = "line" > < a name = "l00486" > < / a > < span class = "lineno" > 486< / span >   rr.< a class = "code" href = "structfaiss_1_1RandomRotationMatrix.html#a857ad8c32fb76b3298d4eea4338ff66f" > init< / a > (5);< / div >
< div class = "line" > < a name = "l00487" > < / a > < span class = "lineno" > 487< / span >   < / div >
< div class = "line" > < a name = "l00488" > < / a > < span class = "lineno" > 488< / span >   < span class = "comment" > // apply scaling on the rotation matrix (right multiplication)< / span > < / div >
< div class = "line" > < a name = "l00489" > < / a > < span class = "lineno" > 489< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1PCAMatrix.html#a4e48e801f98ba2cf57c03b0913d6fafc" > eigen_power< / a > != 0) {< / div >
< div class = "line" > < a name = "l00490" > < / a > < span class = "lineno" > 490< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; i++) {< / div >
< div class = "line" > < a name = "l00491" > < / a > < span class = "lineno" > 491< / span >   < span class = "keywordtype" > float< / span > factor = pow(eigenvalues[i], < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a4e48e801f98ba2cf57c03b0913d6fafc" > eigen_power< / a > );< / div >
< div class = "line" > < a name = "l00492" > < / a > < span class = "lineno" > 492< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; j++)< / div >
< div class = "line" > < a name = "l00493" > < / a > < span class = "lineno" > 493< / span >   rr.< a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > [j * d_out + i] *= factor;< / div >
< div class = "line" > < a name = "l00494" > < / a > < span class = "lineno" > 494< / span >   }< / div >
< div class = "line" > < a name = "l00495" > < / a > < span class = "lineno" > 495< / span >   }< / div >
< div class = "line" > < a name = "l00496" > < / a > < span class = "lineno" > 496< / span >   < / div >
< div class = "line" > < a name = "l00497" > < / a > < span class = "lineno" > 497< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .resize(d_in * < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > );< / div >
< div class = "line" > < a name = "l00498" > < / a > < span class = "lineno" > 498< / span >   {< / div >
< div class = "line" > < a name = "l00499" > < / a > < span class = "lineno" > 499< / span >   FINTEGER dii = d_in, doo = < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ;< / div >
< div class = "line" > < a name = "l00500" > < / a > < span class = "lineno" > 500< / span >   < span class = "keywordtype" > float< / span > one = 1.0, zero = 0.0;< / div >
< div class = "line" > < a name = "l00501" > < / a > < span class = "lineno" > 501< / span >   < / div >
< div class = "line" > < a name = "l00502" > < / a > < span class = "lineno" > 502< / span >   sgemm_ (< span class = "stringliteral" > " Not" < / span > , < span class = "stringliteral" > " Not" < / span > , & dii, & doo, & doo,< / div >
< div class = "line" > < a name = "l00503" > < / a > < span class = "lineno" > 503< / span >   & one, < a class = "code" href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > PCAMat< / a > .data(), & dii, rr.< a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .data(), & doo, & zero,< / div >
< div class = "line" > < a name = "l00504" > < / a > < span class = "lineno" > 504< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .data(), & dii);< / 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 >   }< / div >
< div class = "line" > < a name = "l00507" > < / a > < span class = "lineno" > 507< / span >   < / div >
< div class = "line" > < a name = "l00508" > < / a > < span class = "lineno" > 508< / span >   }< / 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 >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#ab0383f690aeb823876e9143febad1a87" > b< / a > .clear(); < a class = "code" href = "structfaiss_1_1LinearTransform.html#ab0383f690aeb823876e9143febad1a87" > b< / a > .resize(< a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > );< / div >
< div class = "line" > < a name = "l00511" > < / a > < span class = "lineno" > 511< / span >   < / div >
< div class = "line" > < a name = "l00512" > < / a > < span class = "lineno" > 512< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; i++) {< / div >
< div class = "line" > < a name = "l00513" > < / a > < span class = "lineno" > 513< / span >   < span class = "keywordtype" > float< / span > accu = 0;< / div >
< div class = "line" > < a name = "l00514" > < / a > < span class = "lineno" > 514< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00515" > < / a > < span class = "lineno" > 515< / span >   accu -= < a class = "code" href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > mean< / a > [j] * < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > [j + i * d_in];< / div >
< div class = "line" > < a name = "l00516" > < / a > < span class = "lineno" > 516< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#ab0383f690aeb823876e9143febad1a87" > b< / a > [i] = accu;< / div >
< div class = "line" > < a name = "l00517" > < / a > < span class = "lineno" > 517< / span >   }< / div >
< div class = "line" > < a name = "l00518" > < / a > < span class = "lineno" > 518< / span >   < / div >
< div class = "line" > < a name = "l00519" > < / a > < span class = "lineno" > 519< / span >   }< / div >
2017-03-21 01:33:21 +08:00
< div class = "line" > < a name = "l00520" > < / a > < span class = "lineno" > 520< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00521" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1PCAMatrix.html#abf427521a66cbfaaf0b7aae16bcb6e93" > 521< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1PCAMatrix.html#abf427521a66cbfaaf0b7aae16bcb6e93" > PCAMatrix::reverse_transform< / a > (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * xt,< / div >
< div class = "line" > < a name = "l00522" > < / a > < span class = "lineno" > 522< / span >   < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00523" > < / a > < span class = "lineno" > 523< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00524" > < / a > < span class = "lineno" > 524< / span >   FAISS_THROW_IF_NOT_MSG (< a class = "code" href = "structfaiss_1_1PCAMatrix.html#a4e48e801f98ba2cf57c03b0913d6fafc" > eigen_power< / a > == 0,< / div >
< div class = "line" > < a name = "l00525" > < / a > < span class = "lineno" > 525< / span >   < span class = "stringliteral" > " reverse only implemented for orthogonal transforms" < / span > );< / div >
< div class = "line" > < a name = "l00526" > < / a > < span class = "lineno" > 526< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#a1642efca4f5eb524c29722b0441c4d13" > transform_transpose< / a > (n, xt, x);< / div >
< div class = "line" > < a name = "l00527" > < / a > < span class = "lineno" > 527< / span >   }< / div >
< div class = "line" > < a name = "l00528" > < / a > < span class = "lineno" > 528< / span >   < / div >
< div class = "line" > < a name = "l00529" > < / a > < span class = "lineno" > 529< / span >   < span class = "comment" > /*********************************************< / span > < / div >
< div class = "line" > < a name = "l00530" > < / a > < span class = "lineno" > 530< / span >   < span class = "comment" > * OPQMatrix< / span > < / div >
< div class = "line" > < a name = "l00531" > < / a > < span class = "lineno" > 531< / span >   < span class = "comment" > *********************************************/< / span > < / div >
< div class = "line" > < a name = "l00532" > < / a > < span class = "lineno" > 532< / span >   < / div >
< div class = "line" > < a name = "l00533" > < / a > < span class = "lineno" > 533< / span >   < / div >
< div class = "line" > < a name = "l00534" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1OPQMatrix.html#a6eb9d18ff15b1c598d3aa3bc9ab84519" > 534< / a > < / span >   < a class = "code" href = "structfaiss_1_1OPQMatrix.html#a6eb9d18ff15b1c598d3aa3bc9ab84519" > OPQMatrix::OPQMatrix< / a > (< span class = "keywordtype" > int< / span > d, < span class = "keywordtype" > int< / span > M, < span class = "keywordtype" > int< / span > d2):< / div >
< div class = "line" > < a name = "l00535" > < / a > < span class = "lineno" > 535< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html" > LinearTransform< / a > (d, d2 == -1 ? d : d2, false), M(M),< / div >
< div class = "line" > < a name = "l00536" > < / a > < span class = "lineno" > 536< / span >   niter (50),< / div >
< div class = "line" > < a name = "l00537" > < / a > < span class = "lineno" > 537< / span >   niter_pq (4), niter_pq_0 (40),< / div >
< div class = "line" > < a name = "l00538" > < / a > < span class = "lineno" > 538< / span >   verbose(false)< / 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 >   < a class = "code" href = "structfaiss_1_1VectorTransform.html#ab511f1ddf608c00204555881ca28cb02" > is_trained< / a > = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00541" > < / a > < span class = "lineno" > 541< / span >   < span class = "comment" > // OPQ is quite expensive to train, so set this right.< / span > < / div >
< div class = "line" > < a name = "l00542" > < / a > < span class = "lineno" > 542< / span >   < a class = "code" href = "structfaiss_1_1OPQMatrix.html#afdd5b2c74d19ccc5c7a6e0199333321a" > max_train_points< / a > = 256 * 256;< / div >
< div class = "line" > < a name = "l00543" > < / a > < span class = "lineno" > 543< / span >   }< / div >
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< div class = "line" > < a name = "l00544" > < / a > < span class = "lineno" > 544< / span >   < / div >
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< div class = "line" > < a name = "l00545" > < / a > < span class = "lineno" > 545< / 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" > < a class = "line" href = "structfaiss_1_1OPQMatrix.html#a1e314577db0c6cd4a709503f73eb71e2" > 547< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1OPQMatrix.html#a1e314577db0c6cd4a709503f73eb71e2" > OPQMatrix::train< / a > (< a class = "code" href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > Index::idx_t< / a > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< / div >
< div class = "line" > < a name = "l00548" > < / a > < span class = "lineno" > 548< / span >   {< / div >
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< div class = "line" > < a name = "l00549" > < / a > < span class = "lineno" > 549< / span >   < / div >
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< div class = "line" > < a name = "l00550" > < / a > < span class = "lineno" > 550< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * x_in = x;< / div >
< div class = "line" > < a name = "l00551" > < / a > < span class = "lineno" > 551< / span >   < / div >
< div class = "line" > < a name = "l00552" > < / a > < span class = "lineno" > 552< / span >   x = < a class = "code" href = "namespacefaiss.html#a14884d253128c7af5891a65082ad7dc6" > fvecs_maybe_subsample< / a > (d_in, (< span class = "keywordtype" > size_t< / span > *)& n,< / div >
< div class = "line" > < a name = "l00553" > < / a > < span class = "lineno" > 553< / span >   < a class = "code" href = "structfaiss_1_1OPQMatrix.html#afdd5b2c74d19ccc5c7a6e0199333321a" > max_train_points< / a > , x, verbose);< / div >
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< div class = "line" > < a name = "l00554" > < / a > < span class = "lineno" > 554< / span >   < / div >
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< div class = "line" > < a name = "l00555" > < / a > < span class = "lineno" > 555< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del_x (x != x_in ? x : < span class = "keyword" > nullptr< / span > );< / div >
< div class = "line" > < a name = "l00556" > < / a > < span class = "lineno" > 556< / span >   < / div >
< div class = "line" > < a name = "l00557" > < / a > < span class = "lineno" > 557< / span >   < span class = "comment" > // To support d_out > d_in, we pad input vectors with 0s to d_out< / span > < / div >
< div class = "line" > < a name = "l00558" > < / a > < span class = "lineno" > 558< / span >   < span class = "keywordtype" > size_t< / span > d = < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > < = d_in ? d_in : < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ;< / div >
< div class = "line" > < a name = "l00559" > < / a > < span class = "lineno" > 559< / span >   < span class = "keywordtype" > size_t< / span > d2 = < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ;< / div >
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< div class = "line" > < a name = "l00560" > < / a > < span class = "lineno" > 560< / span >   < / div >
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< div class = "line" > < a name = "l00561" > < / a > < span class = "lineno" > 561< / span >   < span class = "preprocessor" > #if 0< / span > < / div >
< div class = "line" > < a name = "l00562" > < / a > < span class = "lineno" > 562< / span >   < span class = "preprocessor" > < / span > < span class = "comment" > // what this test shows: the only way of getting bit-exact< / span > < / div >
< div class = "line" > < a name = "l00563" > < / a > < span class = "lineno" > 563< / span >   < span class = "comment" > // reproducible results with sgeqrf and sgesvd seems to be forcing< / span > < / div >
< div class = "line" > < a name = "l00564" > < / a > < span class = "lineno" > 564< / span >   < span class = "comment" > // single-threading.< / span > < / div >
< div class = "line" > < a name = "l00565" > < / a > < span class = "lineno" > 565< / span >   { < span class = "comment" > // test repro< / span > < / div >
< div class = "line" > < a name = "l00566" > < / a > < span class = "lineno" > 566< / span >   std::vector< float> r (d * d);< / div >
< div class = "line" > < a name = "l00567" > < / a > < span class = "lineno" > 567< / span >   < span class = "keywordtype" > float< / span > * rotation = r.data();< / div >
< div class = "line" > < a name = "l00568" > < / a > < span class = "lineno" > 568< / span >   float_randn (rotation, d * d, 1234);< / div >
< div class = "line" > < a name = "l00569" > < / a > < span class = "lineno" > 569< / span >   printf(< span class = "stringliteral" > " CS0: %016lx\n" < / span > ,< / div >
< div class = "line" > < a name = "l00570" > < / a > < span class = "lineno" > 570< / span >   < a class = "code" href = "namespacefaiss.html#a4369329c9dbdfe23e3f35d09ba7b5c6e" > ivec_checksum< / a > (128*128, (< span class = "keywordtype" > int< / span > *)rotation));< / div >
< div class = "line" > < a name = "l00571" > < / a > < span class = "lineno" > 571< / span >   < a class = "code" href = "namespacefaiss.html#afb68fe89ad5e948974da1b70d7b4157c" > matrix_qr< / a > (d, d, rotation);< / div >
< div class = "line" > < a name = "l00572" > < / a > < span class = "lineno" > 572< / span >   printf(< span class = "stringliteral" > " CS1: %016lx\n" < / span > ,< / div >
< div class = "line" > < a name = "l00573" > < / a > < span class = "lineno" > 573< / span >   < a class = "code" href = "namespacefaiss.html#a4369329c9dbdfe23e3f35d09ba7b5c6e" > ivec_checksum< / a > (128*128, (< span class = "keywordtype" > int< / span > *)rotation));< / div >
< div class = "line" > < a name = "l00574" > < / a > < span class = "lineno" > 574< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00575" > < / a > < span class = "lineno" > 575< / span >   }< / div >
< div class = "line" > < a name = "l00576" > < / a > < span class = "lineno" > 576< / span >   < span class = "preprocessor" > #endif< / span > < / div >
< div class = "line" > < a name = "l00577" > < / a > < span class = "lineno" > 577< / span >   < span class = "preprocessor" > < / span > < / div >
< div class = "line" > < a name = "l00578" > < / a > < span class = "lineno" > 578< / span >   < span class = "keywordflow" > if< / span > (verbose) {< / div >
< div class = "line" > < a name = "l00579" > < / a > < span class = "lineno" > 579< / span >   printf (< span class = "stringliteral" > " OPQMatrix::train: training an OPQ rotation matrix " < / span > < / div >
< div class = "line" > < a name = "l00580" > < / a > < span class = "lineno" > 580< / span >   < span class = "stringliteral" > " for M=%d from %ld vectors in %dD -> %dD\n" < / span > ,< / div >
< div class = "line" > < a name = "l00581" > < / a > < span class = "lineno" > 581< / span >   < a class = "code" href = "structfaiss_1_1OPQMatrix.html#a07ad0c0c84f96a6880c1c8eaf09596e3" > M< / a > , n, d_in, < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > );< / div >
< div class = "line" > < a name = "l00582" > < / a > < span class = "lineno" > 582< / span >   }< / div >
< div class = "line" > < a name = "l00583" > < / a > < span class = "lineno" > 583< / span >   < / div >
< div class = "line" > < a name = "l00584" > < / a > < span class = "lineno" > 584< / span >   std::vector< float> xtrain (n * d);< / div >
< div class = "line" > < a name = "l00585" > < / a > < span class = "lineno" > 585< / span >   < span class = "comment" > // center x< / span > < / div >
< div class = "line" > < a name = "l00586" > < / a > < span class = "lineno" > 586< / span >   {< / div >
< div class = "line" > < a name = "l00587" > < / a > < span class = "lineno" > 587< / span >   std::vector< float> sum (d);< / div >
< div class = "line" > < a name = "l00588" > < / a > < span class = "lineno" > 588< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *xi = x;< / div >
< div class = "line" > < a name = "l00589" > < / a > < span class = "lineno" > 589< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00590" > < / a > < span class = "lineno" > 590< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00591" > < / a > < span class = "lineno" > 591< / span >   sum [j] += *xi++;< / div >
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< div class = "line" > < a name = "l00592" > < / a > < span class = "lineno" > 592< / span >   }< / div >
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< div class = "line" > < a name = "l00593" > < / a > < span class = "lineno" > 593< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < d; i++) sum[i] /= n;< / div >
< div class = "line" > < a name = "l00594" > < / a > < span class = "lineno" > 594< / span >   < span class = "keywordtype" > float< / span > *yi = xtrain.data();< / div >
< div class = "line" > < a name = "l00595" > < / a > < span class = "lineno" > 595< / span >   xi = x;< / div >
< div class = "line" > < a name = "l00596" > < / a > < span class = "lineno" > 596< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00597" > < / a > < span class = "lineno" > 597< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < d_in; j++)< / div >
< div class = "line" > < a name = "l00598" > < / a > < span class = "lineno" > 598< / span >   *yi++ = *xi++ - sum[j];< / div >
< div class = "line" > < a name = "l00599" > < / a > < span class = "lineno" > 599< / span >   yi += d - d_in;< / div >
< div class = "line" > < a name = "l00600" > < / a > < span class = "lineno" > 600< / span >   }< / div >
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< div class = "line" > < a name = "l00601" > < / a > < span class = "lineno" > 601< / span >   }< / div >
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< div class = "line" > < a name = "l00602" > < / a > < span class = "lineno" > 602< / span >   < span class = "keywordtype" > float< / span > *rotation;< / 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 = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .size () == 0) {< / div >
< div class = "line" > < a name = "l00605" > < / a > < span class = "lineno" > 605< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .resize (d * d);< / div >
< div class = "line" > < a name = "l00606" > < / a > < span class = "lineno" > 606< / span >   rotation = < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .data();< / div >
< div class = "line" > < a name = "l00607" > < / a > < span class = "lineno" > 607< / span >   < span class = "keywordflow" > if< / span > (verbose)< / div >
< div class = "line" > < a name = "l00608" > < / a > < span class = "lineno" > 608< / span >   printf(< span class = "stringliteral" > " OPQMatrix::train: making random %ld*%ld rotation\n" < / span > ,< / div >
< div class = "line" > < a name = "l00609" > < / a > < span class = "lineno" > 609< / span >   d, d);< / div >
< div class = "line" > < a name = "l00610" > < / a > < span class = "lineno" > 610< / span >   float_randn (rotation, d * d, 1234);< / div >
< div class = "line" > < a name = "l00611" > < / a > < span class = "lineno" > 611< / span >   < a class = "code" href = "namespacefaiss.html#afb68fe89ad5e948974da1b70d7b4157c" > matrix_qr< / a > (d, d, rotation);< / div >
< div class = "line" > < a name = "l00612" > < / a > < span class = "lineno" > 612< / span >   < span class = "comment" > // we use only the d * d2 upper part of the matrix< / span > < / div >
< div class = "line" > < a name = "l00613" > < / a > < span class = "lineno" > 613< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .resize (d * d2);< / div >
< div class = "line" > < a name = "l00614" > < / a > < span class = "lineno" > 614< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00615" > < / a > < span class = "lineno" > 615< / span >   FAISS_THROW_IF_NOT (< a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .size() == d * d2);< / div >
< div class = "line" > < a name = "l00616" > < / a > < span class = "lineno" > 616< / span >   rotation = < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .data();< / div >
< div class = "line" > < a name = "l00617" > < / a > < span class = "lineno" > 617< / span >   }< / 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 >   std::vector< float> < / div >
< div class = "line" > < a name = "l00621" > < / a > < span class = "lineno" > 621< / span >   xproj (d2 * n), pq_recons (d2 * n), xxr (d * n),< / div >
< div class = "line" > < a name = "l00622" > < / a > < span class = "lineno" > 622< / span >   tmp(d * d * 4);< / div >
< div class = "line" > < a name = "l00623" > < / a > < span class = "lineno" > 623< / span >   < / div >
< div class = "line" > < a name = "l00624" > < / a > < span class = "lineno" > 624< / span >   std::vector< uint8_t> codes (< a class = "code" href = "structfaiss_1_1OPQMatrix.html#a07ad0c0c84f96a6880c1c8eaf09596e3" > M< / a > * n);< / div >
< div class = "line" > < a name = "l00625" > < / a > < span class = "lineno" > 625< / span >   < a class = "code" href = "structfaiss_1_1ProductQuantizer.html" > ProductQuantizer< / a > pq_regular (d2, < a class = "code" href = "structfaiss_1_1OPQMatrix.html#a07ad0c0c84f96a6880c1c8eaf09596e3" > M< / a > , 8);< / div >
< div class = "line" > < a name = "l00626" > < / a > < span class = "lineno" > 626< / span >   < span class = "keywordtype" > double< / span > t0 = < a class = "code" href = "namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb" > getmillisecs< / a > ();< / div >
< div class = "line" > < a name = "l00627" > < / a > < span class = "lineno" > 627< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > iter = 0; iter < < a class = "code" href = "structfaiss_1_1OPQMatrix.html#a12cb3e05989dee37592b682070c31000" > niter< / a > ; iter++) {< / div >
< div class = "line" > < a name = "l00628" > < / a > < span class = "lineno" > 628< / span >   < / div >
< div class = "line" > < a name = "l00629" > < / a > < span class = "lineno" > 629< / span >   { < span class = "comment" > // torch.mm(xtrain, rotation:t())< / span > < / div >
< div class = "line" > < a name = "l00630" > < / a > < span class = "lineno" > 630< / span >   FINTEGER di = d, d2i = d2, ni = n;< / div >
< div class = "line" > < a name = "l00631" > < / a > < span class = "lineno" > 631< / span >   < span class = "keywordtype" > float< / span > zero = 0, one = 1;< / div >
< div class = "line" > < a name = "l00632" > < / a > < span class = "lineno" > 632< / span >   sgemm_ (< span class = "stringliteral" > " Transposed" < / span > , < span class = "stringliteral" > " Not transposed" < / span > ,< / div >
< div class = "line" > < a name = "l00633" > < / a > < span class = "lineno" > 633< / span >   & d2i, & ni, & di,< / div >
< div class = "line" > < a name = "l00634" > < / a > < span class = "lineno" > 634< / span >   & one, rotation, & di,< / div >
< div class = "line" > < a name = "l00635" > < / a > < span class = "lineno" > 635< / span >   xtrain.data(), & di,< / div >
< div class = "line" > < a name = "l00636" > < / a > < span class = "lineno" > 636< / span >   & zero, xproj.data(), & d2i);< / div >
< div class = "line" > < a name = "l00637" > < / a > < span class = "lineno" > 637< / span >   }< / div >
2017-03-21 01:33:21 +08:00
< div class = "line" > < a name = "l00638" > < / a > < span class = "lineno" > 638< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00639" > < / a > < span class = "lineno" > 639< / span >   pq_regular.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#af265acf5aa1bcda60898002287e6a3d6" > cp< / a > .< a class = "code" href = "structfaiss_1_1ClusteringParameters.html#a993e0a035248faad6e292a5ef9af1953" > max_points_per_centroid< / a > = 1000;< / div >
< div class = "line" > < a name = "l00640" > < / a > < span class = "lineno" > 640< / span >   pq_regular.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#af265acf5aa1bcda60898002287e6a3d6" > cp< / a > .< a class = "code" href = "structfaiss_1_1ClusteringParameters.html#a5c7c6f05c75e1668befdb3be148fd5f9" > niter< / a > = iter == 0 ? < a class = "code" href = "structfaiss_1_1OPQMatrix.html#a6406e97b05c831cc19b9343be3b43a1f" > niter_pq_0< / a > : < a class = "code" href = "structfaiss_1_1OPQMatrix.html#ab88c87a3931ec356904abf5f1f797a83" > niter_pq< / a > ;< / div >
< div class = "line" > < a name = "l00641" > < / a > < span class = "lineno" > 641< / span >   pq_regular.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#af265acf5aa1bcda60898002287e6a3d6" > cp< / a > .verbose = verbose;< / div >
< div class = "line" > < a name = "l00642" > < / a > < span class = "lineno" > 642< / span >   pq_regular.train (n, xproj.data());< / div >
< div class = "line" > < a name = "l00643" > < / a > < span class = "lineno" > 643< / span >   < / div >
< div class = "line" > < a name = "l00644" > < / a > < span class = "lineno" > 644< / span >   pq_regular.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ae5a340ee5a4b1d35a565b167de2a2ef1" > compute_codes< / a > (xproj.data(), codes.data(), n);< / div >
< div class = "line" > < a name = "l00645" > < / a > < span class = "lineno" > 645< / span >   pq_regular.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a7afbf9d96276f021981e99f064254208" > decode< / a > (codes.data(), pq_recons.data(), n);< / div >
< div class = "line" > < a name = "l00646" > < / a > < span class = "lineno" > 646< / span >   < / div >
< div class = "line" > < a name = "l00647" > < / a > < span class = "lineno" > 647< / span >   < span class = "keywordtype" > float< / span > pq_err = < a class = "code" href = "namespacefaiss.html#a7466bd32de31640860393a701eaac5ad" > fvec_L2sqr< / a > (pq_recons.data(), xproj.data(), n * d2) / n;< / div >
< div class = "line" > < a name = "l00648" > < / a > < span class = "lineno" > 648< / span >   < / div >
< div class = "line" > < a name = "l00649" > < / a > < span class = "lineno" > 649< / span >   < span class = "keywordflow" > if< / span > (verbose)< / div >
< div class = "line" > < a name = "l00650" > < / a > < span class = "lineno" > 650< / span >   printf (< span class = "stringliteral" > " Iteration %d (%d PQ iterations):" < / span > < / div >
< div class = "line" > < a name = "l00651" > < / a > < span class = "lineno" > 651< / span >   < span class = "stringliteral" > " %.3f s, obj=%g\n" < / span > , iter, pq_regular.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#af265acf5aa1bcda60898002287e6a3d6" > cp< / a > .< a class = "code" href = "structfaiss_1_1ClusteringParameters.html#a5c7c6f05c75e1668befdb3be148fd5f9" > niter< / a > ,< / div >
< div class = "line" > < a name = "l00652" > < / a > < span class = "lineno" > 652< / span >   (< a class = "code" href = "namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb" > getmillisecs< / a > () - t0) / 1000.0, pq_err);< / div >
< div class = "line" > < a name = "l00653" > < / a > < span class = "lineno" > 653< / span >   < / div >
< div class = "line" > < a name = "l00654" > < / a > < span class = "lineno" > 654< / span >   {< / div >
< div class = "line" > < a name = "l00655" > < / a > < span class = "lineno" > 655< / span >   < span class = "keywordtype" > float< / span > *u = tmp.data(), *vt = & tmp [d * d];< / div >
< div class = "line" > < a name = "l00656" > < / a > < span class = "lineno" > 656< / span >   < span class = "keywordtype" > float< / span > *sing_val = & tmp [2 * d * d];< / div >
< div class = "line" > < a name = "l00657" > < / a > < span class = "lineno" > 657< / span >   FINTEGER di = d, d2i = d2, ni = n;< / div >
< div class = "line" > < a name = "l00658" > < / a > < span class = "lineno" > 658< / span >   < span class = "keywordtype" > float< / span > one = 1, zero = 0;< / div >
2017-03-21 01:33:21 +08:00
< div class = "line" > < a name = "l00659" > < / a > < span class = "lineno" > 659< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00660" > < / a > < span class = "lineno" > 660< / span >   < span class = "comment" > // torch.mm(xtrain:t(), pq_recons)< / span > < / div >
< div class = "line" > < a name = "l00661" > < / a > < span class = "lineno" > 661< / span >   sgemm_ (< span class = "stringliteral" > " Not" < / span > , < span class = "stringliteral" > " Transposed" < / span > ,< / div >
< div class = "line" > < a name = "l00662" > < / a > < span class = "lineno" > 662< / span >   & d2i, & di, & ni,< / div >
< div class = "line" > < a name = "l00663" > < / a > < span class = "lineno" > 663< / span >   & one, pq_recons.data(), & d2i,< / div >
< div class = "line" > < a name = "l00664" > < / a > < span class = "lineno" > 664< / span >   xtrain.data(), & di,< / div >
< div class = "line" > < a name = "l00665" > < / a > < span class = "lineno" > 665< / span >   & zero, xxr.data(), & d2i);< / div >
2017-03-21 01:33:21 +08:00
< 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 >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00668" > < / a > < span class = "lineno" > 668< / span >   FINTEGER lwork = -1, info = -1;< / div >
< div class = "line" > < a name = "l00669" > < / a > < span class = "lineno" > 669< / span >   < span class = "keywordtype" > float< / span > worksz;< / div >
< div class = "line" > < a name = "l00670" > < / a > < span class = "lineno" > 670< / span >   < span class = "comment" > // workspace query< / span > < / div >
< div class = "line" > < a name = "l00671" > < / a > < span class = "lineno" > 671< / span >   sgesvd_ (< span class = "stringliteral" > " All" < / span > , < span class = "stringliteral" > " All" < / span > ,< / div >
< div class = "line" > < a name = "l00672" > < / a > < span class = "lineno" > 672< / span >   & d2i, & di, xxr.data(), & d2i,< / div >
< div class = "line" > < a name = "l00673" > < / a > < span class = "lineno" > 673< / span >   sing_val,< / div >
< div class = "line" > < a name = "l00674" > < / a > < span class = "lineno" > 674< / span >   vt, & d2i, u, & di,< / div >
< div class = "line" > < a name = "l00675" > < / a > < span class = "lineno" > 675< / span >   & worksz, & lwork, & info);< / div >
2017-03-21 01:33:21 +08:00
< div class = "line" > < a name = "l00676" > < / a > < span class = "lineno" > 676< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00677" > < / a > < span class = "lineno" > 677< / span >   lwork = int(worksz);< / div >
< div class = "line" > < a name = "l00678" > < / a > < span class = "lineno" > 678< / span >   std::vector< float> work (lwork);< / div >
< div class = "line" > < a name = "l00679" > < / a > < span class = "lineno" > 679< / span >   < span class = "comment" > // u and vt swapped< / span > < / div >
< div class = "line" > < a name = "l00680" > < / a > < span class = "lineno" > 680< / span >   sgesvd_ (< span class = "stringliteral" > " All" < / span > , < span class = "stringliteral" > " All" < / span > ,< / div >
< div class = "line" > < a name = "l00681" > < / a > < span class = "lineno" > 681< / span >   & d2i, & di, xxr.data(), & d2i,< / div >
< div class = "line" > < a name = "l00682" > < / a > < span class = "lineno" > 682< / span >   sing_val,< / div >
< div class = "line" > < a name = "l00683" > < / a > < span class = "lineno" > 683< / span >   vt, & d2i, u, & di,< / div >
< div class = "line" > < a name = "l00684" > < / a > < span class = "lineno" > 684< / span >   work.data(), & lwork, & info);< / div >
< div class = "line" > < a name = "l00685" > < / a > < span class = "lineno" > 685< / span >   < / div >
< div class = "line" > < a name = "l00686" > < / a > < span class = "lineno" > 686< / span >   sgemm_ (< span class = "stringliteral" > " Transposed" < / span > , < span class = "stringliteral" > " Transposed" < / span > ,< / div >
< div class = "line" > < a name = "l00687" > < / a > < span class = "lineno" > 687< / span >   & di, & d2i, & d2i,< / div >
< div class = "line" > < a name = "l00688" > < / a > < span class = "lineno" > 688< / span >   & one, u, & di, vt, & d2i,< / div >
< div class = "line" > < a name = "l00689" > < / a > < span class = "lineno" > 689< / span >   & zero, rotation, & di);< / 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 >   pq_regular.train_type = < a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a3a41c6286095e731be744548d9535a35a4960d143d2aa49cf92028cf3470c47a0" > ProductQuantizer::Train_hot_start< / a > ;< / div >
< div class = "line" > < a name = "l00693" > < / a > < span class = "lineno" > 693< / span >   }< / div >
< div class = "line" > < a name = "l00694" > < / a > < span class = "lineno" > 694< / span >   < / div >
< div class = "line" > < a name = "l00695" > < / a > < span class = "lineno" > 695< / span >   < span class = "comment" > // revert A matrix< / span > < / div >
< div class = "line" > < a name = "l00696" > < / a > < span class = "lineno" > 696< / span >   < span class = "keywordflow" > if< / span > (d > d_in) {< / div >
< div class = "line" > < a name = "l00697" > < / a > < span class = "lineno" > 697< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > long< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; i++)< / div >
< div class = "line" > < a name = "l00698" > < / a > < span class = "lineno" > 698< / span >   memmove (& < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > [i * d_in], & < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > [i * d], < span class = "keyword" > sizeof< / span > (< a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > [0]) * d_in);< / div >
< div class = "line" > < a name = "l00699" > < / a > < span class = "lineno" > 699< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > A< / a > .resize (d_in * d_out);< / 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 >   < a class = "code" href = "structfaiss_1_1VectorTransform.html#ab511f1ddf608c00204555881ca28cb02" > is_trained< / a > = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00703" > < / a > < span class = "lineno" > 703< / span >   }< / div >
< div class = "line" > < a name = "l00704" > < / a > < span class = "lineno" > 704< / span >   < / div >
< div class = "line" > < a name = "l00705" > < / a > < span class = "lineno" > 705< / span >   < / div >
2017-03-21 01:33:21 +08:00
< div class = "line" > < a name = "l00706" > < / a > < span class = "lineno" > 706< / span >   < / div >
< div class = "line" > < a name = "l00707" > < / a > < span class = "lineno" > 707< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00708" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1OPQMatrix.html#a8e61a84ea6bcbdee1809028b6aaa3aae" > 708< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1OPQMatrix.html#a8e61a84ea6bcbdee1809028b6aaa3aae" > OPQMatrix::reverse_transform< / a > (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * xt,< / div >
< div class = "line" > < a name = "l00709" > < / a > < span class = "lineno" > 709< / span >   < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00710" > < / a > < span class = "lineno" > 710< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00711" > < / a > < span class = "lineno" > 711< / span >   < a class = "code" href = "structfaiss_1_1LinearTransform.html#a1642efca4f5eb524c29722b0441c4d13" > transform_transpose< / a > (n, xt, x);< / div >
< div class = "line" > < a name = "l00712" > < / a > < span class = "lineno" > 712< / span >   }< / div >
< div class = "line" > < a name = "l00713" > < / a > < span class = "lineno" > 713< / span >   < / div >
2017-07-18 17:43:35 +08:00
< 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 >   < span class = "comment" > /*********************************************< / span > < / div >
< div class = "line" > < a name = "l00716" > < / a > < span class = "lineno" > 716< / span >   < span class = "comment" > * NormalizationTransform< / span > < / div >
< div class = "line" > < a name = "l00717" > < / a > < span class = "lineno" > 717< / span >   < span class = "comment" > *********************************************/< / span > < / div >
< div class = "line" > < a name = "l00718" > < / a > < span class = "lineno" > 718< / span >   < / div >
< div class = "line" > < a name = "l00719" > < / a > < span class = "lineno" > 719< / span >   NormalizationTransform::NormalizationTransform (< span class = "keywordtype" > int< / span > d, < span class = "keywordtype" > float< / span > norm):< / div >
< div class = "line" > < a name = "l00720" > < / a > < span class = "lineno" > 720< / span >   < a class = "code" href = "structfaiss_1_1VectorTransform.html" > VectorTransform< / a > (d, d), norm (norm)< / 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 >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00723" > < / a > < span class = "lineno" > 723< / span >   < / div >
2017-07-18 17:43:35 +08:00
< div class = "line" > < a name = "l00724" > < / a > < span class = "lineno" > 724< / span >   NormalizationTransform::NormalizationTransform ():< / div >
< div class = "line" > < a name = "l00725" > < / a > < span class = "lineno" > 725< / span >   < a class = "code" href = "structfaiss_1_1VectorTransform.html" > VectorTransform< / a > (-1, -1), norm (-1)< / div >
< div class = "line" > < a name = "l00726" > < / a > < span class = "lineno" > 726< / span >   {< / div >
< div class = "line" > < a name = "l00727" > < / a > < span class = "lineno" > 727< / span >   }< / div >
< div class = "line" > < a name = "l00728" > < / a > < span class = "lineno" > 728< / span >   < / div >
< div class = "line" > < a name = "l00729" > < / a > < span class = "lineno" > 729< / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1NormalizationTransform.html#a80c94dc7d17c9a7a9edc627150401571" > NormalizationTransform::apply_noalloc< / a > < / div >
< div class = "line" > < a name = "l00730" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1NormalizationTransform.html#a80c94dc7d17c9a7a9edc627150401571" > 730< / a > < / span >   (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * x, < span class = "keywordtype" > float< / span > * xt) < span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00731" > < / a > < span class = "lineno" > 731< / span >   {< / div >
< div class = "line" > < a name = "l00732" > < / a > < span class = "lineno" > 732< / span >   < span class = "keywordflow" > if< / span > (norm == 2.0) {< / div >
< div class = "line" > < a name = "l00733" > < / a > < span class = "lineno" > 733< / span >   memcpy (xt, x, < span class = "keyword" > sizeof< / span > (x[0]) * n * d_in);< / div >
< div class = "line" > < a name = "l00734" > < / a > < span class = "lineno" > 734< / span >   fvec_renorm_L2 (d_in, n, xt);< / div >
< div class = "line" > < a name = "l00735" > < / a > < span class = "lineno" > 735< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00736" > < / a > < span class = "lineno" > 736< / span >   FAISS_THROW_MSG (< span class = "stringliteral" > " not implemented" < / span > );< / div >
< div class = "line" > < a name = "l00737" > < / a > < span class = "lineno" > 737< / span >   }< / div >
< div class = "line" > < a name = "l00738" > < / a > < span class = "lineno" > 738< / span >   }< / div >
< div class = "line" > < a name = "l00739" > < / a > < span class = "lineno" > 739< / span >   < / div >
< div class = "line" > < a name = "l00740" > < / a > < span class = "lineno" > 740< / span >   < span class = "comment" > /*********************************************< / span > < / div >
< div class = "line" > < a name = "l00741" > < / a > < span class = "lineno" > 741< / span >   < span class = "comment" > * IndexPreTransform< / span > < / div >
< div class = "line" > < a name = "l00742" > < / a > < span class = "lineno" > 742< / span >   < span class = "comment" > *********************************************/< / span > < / 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 >   IndexPreTransform::IndexPreTransform ():< / div >
< div class = "line" > < a name = "l00745" > < / a > < span class = "lineno" > 745< / span >   index(nullptr), own_fields (false)< / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00746" > < / a > < span class = "lineno" > 746< / span >   {< / div >
2017-07-18 17:43:35 +08:00
< div class = "line" > < a name = "l00747" > < / a > < span class = "lineno" > 747< / span >   }< / div >
< div class = "line" > < a name = "l00748" > < / a > < span class = "lineno" > 748< / span >   < / div >
< div class = "line" > < a name = "l00749" > < / a > < span class = "lineno" > 749< / span >   < / div >
< div class = "line" > < a name = "l00750" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPreTransform.html#a2b16a03c38aa892292ba7a33da2ff7c4" > 750< / a > < / span >   IndexPreTransform::IndexPreTransform (< / div >
< div class = "line" > < a name = "l00751" > < / a > < span class = "lineno" > 751< / span >   < a class = "code" href = "structfaiss_1_1Index.html" > Index< / a > * index):< / div >
< div class = "line" > < a name = "l00752" > < / a > < span class = "lineno" > 752< / span >   < a class = "code" href = "structfaiss_1_1Index.html" > Index< / a > (index-> d, index-> metric_type),< / div >
< div class = "line" > < a name = "l00753" > < / a > < span class = "lineno" > 753< / span >   index (index), own_fields (false)< / 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 >   < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = index-> < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > ;< / div >
< div class = "line" > < a name = "l00756" > < / a > < span class = "lineno" > 756< / span >   }< / div >
< div class = "line" > < a name = "l00757" > < / a > < span class = "lineno" > 757< / span >   < / div >
< div class = "line" > < a name = "l00758" > < / a > < span class = "lineno" > 758< / span >   < / div >
< div class = "line" > < a name = "l00759" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPreTransform.html#a7697b1e693b0f099c3c3ec732329c533" > 759< / a > < / span >   IndexPreTransform::IndexPreTransform (< / div >
< div class = "line" > < a name = "l00760" > < / a > < span class = "lineno" > 760< / span >   < a class = "code" href = "structfaiss_1_1VectorTransform.html" > VectorTransform< / a > * ltrans,< / div >
< div class = "line" > < a name = "l00761" > < / a > < span class = "lineno" > 761< / span >   < a class = "code" href = "structfaiss_1_1Index.html" > Index< / a > * index):< / div >
< div class = "line" > < a name = "l00762" > < / a > < span class = "lineno" > 762< / span >   < a class = "code" href = "structfaiss_1_1Index.html" > Index< / a > (index-> d, index-> metric_type),< / div >
< div class = "line" > < a name = "l00763" > < / a > < span class = "lineno" > 763< / span >   index (index), own_fields (false)< / div >
< div class = "line" > < a name = "l00764" > < / a > < span class = "lineno" > 764< / span >   {< / div >
< div class = "line" > < a name = "l00765" > < / a > < span class = "lineno" > 765< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = index-> < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > ;< / div >
< div class = "line" > < a name = "l00766" > < / a > < span class = "lineno" > 766< / span >   prepend_transform (ltrans);< / div >
< div class = "line" > < a name = "l00767" > < / a > < span class = "lineno" > 767< / span >   }< / div >
< div class = "line" > < a name = "l00768" > < / a > < span class = "lineno" > 768< / span >   < / div >
< div class = "line" > < a name = "l00769" > < / a > < span class = "lineno" > 769< / span >   < span class = "keywordtype" > void< / span > IndexPreTransform::prepend_transform (< a class = "code" href = "structfaiss_1_1VectorTransform.html" > VectorTransform< / a > *ltrans)< / div >
< div class = "line" > < a name = "l00770" > < / a > < span class = "lineno" > 770< / span >   {< / div >
< div class = "line" > < a name = "l00771" > < / a > < span class = "lineno" > 771< / span >   FAISS_THROW_IF_NOT (ltrans-> < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > == < a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > );< / div >
< div class = "line" > < a name = "l00772" > < / a > < span class = "lineno" > 772< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > & & ltrans-> < a class = "code" href = "structfaiss_1_1VectorTransform.html#ab511f1ddf608c00204555881ca28cb02" > is_trained< / a > ;< / div >
< div class = "line" > < a name = "l00773" > < / a > < span class = "lineno" > 773< / span >   chain.insert (chain.begin(), ltrans);< / div >
< div class = "line" > < a name = "l00774" > < / a > < span class = "lineno" > 774< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > = ltrans-> d_in;< / div >
< div class = "line" > < a name = "l00775" > < / a > < span class = "lineno" > 775< / span >   }< / div >
< div class = "line" > < a name = "l00776" > < / a > < span class = "lineno" > 776< / span >   < / 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 >   IndexPreTransform::~IndexPreTransform ()< / 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 = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1IndexPreTransform.html#ae5ec3f184eb211e7d6e204082b52c8c0" > own_fields< / a > ) {< / div >
< div class = "line" > < a name = "l00781" > < / a > < span class = "lineno" > 781< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < chain.size(); i++)< / div >
< div class = "line" > < a name = "l00782" > < / a > < span class = "lineno" > 782< / span >   < span class = "keyword" > delete< / span > chain[i];< / div >
< div class = "line" > < a name = "l00783" > < / a > < span class = "lineno" > 783< / span >   < span class = "keyword" > delete< / span > < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > ;< / 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 >   < / div >
< div class = "line" > < a name = "l00788" > < / a > < span class = "lineno" > 788< / span >   < / div >
< div class = "line" > < a name = "l00789" > < / a > < span class = "lineno" > 789< / span >   < / div >
< div class = "line" > < a name = "l00790" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPreTransform.html#a416aaf28d7a533dcf7d2d7de434e993c" > 790< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#a416aaf28d7a533dcf7d2d7de434e993c" > IndexPreTransform::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 = "l00791" > < / a > < span class = "lineno" > 791< / span >   {< / div >
< div class = "line" > < a name = "l00792" > < / a > < span class = "lineno" > 792< / span >   < span class = "keywordtype" > int< / span > last_untrained = 0;< / div >
< div class = "line" > < a name = "l00793" > < / a > < span class = "lineno" > 793< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > ) {< / div >
< div class = "line" > < a name = "l00794" > < / a > < span class = "lineno" > 794< / span >   last_untrained = chain.size();< / div >
< div class = "line" > < a name = "l00795" > < / a > < span class = "lineno" > 795< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00796" > < / a > < span class = "lineno" > 796< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = chain.size() - 1; i > = 0; i--) {< / div >
< div class = "line" > < a name = "l00797" > < / a > < span class = "lineno" > 797< / span >   < span class = "keywordflow" > if< / span > (!chain[i]-> < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > ) {< / div >
< div class = "line" > < a name = "l00798" > < / a > < span class = "lineno" > 798< / span >   last_untrained = i;< / div >
< div class = "line" > < a name = "l00799" > < / a > < span class = "lineno" > 799< / span >   < span class = "keywordflow" > break< / span > ;< / 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 >   }< / div >
< div class = "line" > < a name = "l00802" > < / a > < span class = "lineno" > 802< / span >   }< / div >
< div class = "line" > < a name = "l00803" > < / a > < span class = "lineno" > 803< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *prev_x = x;< / div >
< div class = "line" > < a name = "l00804" > < / a > < span class = "lineno" > 804< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del;< / 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 = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < = last_untrained; i++) {< / div >
< div class = "line" > < a name = "l00807" > < / a > < span class = "lineno" > 807< / span >   < span class = "keywordflow" > if< / span > (i < chain.size()) {< / div >
< div class = "line" > < a name = "l00808" > < / a > < span class = "lineno" > 808< / span >   < a class = "code" href = "structfaiss_1_1VectorTransform.html" > VectorTransform< / a > *ltrans = chain [i];< / div >
< div class = "line" > < a name = "l00809" > < / a > < span class = "lineno" > 809< / span >   < span class = "keywordflow" > if< / span > (!ltrans-> < a class = "code" href = "structfaiss_1_1VectorTransform.html#ab511f1ddf608c00204555881ca28cb02" > is_trained< / a > )< / div >
< div class = "line" > < a name = "l00810" > < / a > < span class = "lineno" > 810< / span >   ltrans-> < a class = "code" href = "structfaiss_1_1VectorTransform.html#a7350d4dd28d60866d55ba4f75d2da84c" > train< / a > (n, prev_x);< / div >
< div class = "line" > < a name = "l00811" > < / a > < span class = "lineno" > 811< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00812" > < / a > < span class = "lineno" > 812< / span >   < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#a8f67dfd73993e192dc78f2c93d9d9532" > train< / a > (n, prev_x);< / div >
< div class = "line" > < a name = "l00813" > < / a > < span class = "lineno" > 813< / span >   }< / div >
< div class = "line" > < a name = "l00814" > < / a > < span class = "lineno" > 814< / span >   < span class = "keywordflow" > if< / span > (i == last_untrained) < span class = "keywordflow" > break< / span > ;< / 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 >   < span class = "keywordtype" > float< / span > * xt = chain[i]-> apply (n, prev_x);< / div >
< div class = "line" > < a name = "l00817" > < / a > < span class = "lineno" > 817< / span >   < span class = "keywordflow" > if< / span > (prev_x != x) < span class = "keyword" > delete< / span > prev_x;< / div >
< div class = "line" > < a name = "l00818" > < / a > < span class = "lineno" > 818< / span >   prev_x = xt;< / div >
< div class = "line" > < a name = "l00819" > < / a > < span class = "lineno" > 819< / span >   del.set(xt);< / div >
< div class = "line" > < a name = "l00820" > < / a > < span class = "lineno" > 820< / span >   }< / div >
< div class = "line" > < a name = "l00821" > < / a > < span class = "lineno" > 821< / span >   < / div >
< div class = "line" > < a name = "l00822" > < / a > < span class = "lineno" > 822< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > = < span class = "keyword" > true< / 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" > 825< / span >   < / div >
< div class = "line" > < a name = "l00826" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPreTransform.html#aa773a5763ebdd1561152b34453fda96d" > 826< / a > < / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *< a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aa773a5763ebdd1561152b34453fda96d" > IndexPreTransform::apply_chain< / 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)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00827" > < / a > < span class = "lineno" > 827< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00828" > < / a > < span class = "lineno" > 828< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *prev_x = x;< / div >
< div class = "line" > < a name = "l00829" > < / a > < span class = "lineno" > 829< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del;< / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00830" > < / a > < span class = "lineno" > 830< / span >   < / div >
2017-07-18 17:43:35 +08:00
< div class = "line" > < a name = "l00831" > < / a > < span class = "lineno" > 831< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < chain.size(); i++) {< / div >
< div class = "line" > < a name = "l00832" > < / a > < span class = "lineno" > 832< / span >   < span class = "keywordtype" > float< / span > * xt = chain[i]-> apply (n, prev_x);< / div >
< div class = "line" > < a name = "l00833" > < / a > < span class = "lineno" > 833< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del2 (xt);< / div >
< div class = "line" > < a name = "l00834" > < / a > < span class = "lineno" > 834< / span >   del2.swap (del);< / div >
< div class = "line" > < a name = "l00835" > < / a > < span class = "lineno" > 835< / span >   prev_x = xt;< / div >
< div class = "line" > < a name = "l00836" > < / a > < span class = "lineno" > 836< / span >   }< / div >
< div class = "line" > < a name = "l00837" > < / a > < span class = "lineno" > 837< / span >   del.release ();< / div >
< div class = "line" > < a name = "l00838" > < / a > < span class = "lineno" > 838< / span >   < span class = "keywordflow" > return< / span > prev_x;< / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00839" > < / a > < span class = "lineno" > 839< / span >   }< / div >
< div class = "line" > < a name = "l00840" > < / a > < span class = "lineno" > 840< / span >   < / div >
2017-07-18 17:43:35 +08:00
< div class = "line" > < a name = "l00841" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPreTransform.html#a03c77c582a3421952e2cba2057083059" > 841< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#a03c77c582a3421952e2cba2057083059" > IndexPreTransform::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 = "l00842" > < / a > < span class = "lineno" > 842< / span >   {< / div >
< div class = "line" > < a name = "l00843" > < / a > < span class = "lineno" > 843< / span >   FAISS_THROW_IF_NOT (< a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > );< / div >
< div class = "line" > < a name = "l00844" > < / a > < span class = "lineno" > 844< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *xt = < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aa773a5763ebdd1561152b34453fda96d" > apply_chain< / a > (n, x);< / div >
< div class = "line" > < a name = "l00845" > < / a > < span class = "lineno" > 845< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del(xt == x ? < span class = "keyword" > nullptr< / span > : xt);< / div >
< div class = "line" > < a name = "l00846" > < / a > < span class = "lineno" > 846< / span >   < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#a1b5e9ac70adbce0897dd6c8276ad96f2" > add< / a > (n, xt);< / div >
< div class = "line" > < a name = "l00847" > < / a > < span class = "lineno" > 847< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > = < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l00848" > < / a > < span class = "lineno" > 848< / span >   }< / div >
< div class = "line" > < a name = "l00849" > < / a > < span class = "lineno" > 849< / span >   < / div >
< div class = "line" > < a name = "l00850" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPreTransform.html#a07fef0553b2ef2907f394470f61898b2" > 850< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#a07fef0553b2ef2907f394470f61898b2" > IndexPreTransform::add_with_ids< / 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 = "l00851" > < / a > < span class = "lineno" > 851< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > long< / span > *xids)< / div >
< div class = "line" > < a name = "l00852" > < / a > < span class = "lineno" > 852< / span >   {< / div >
< div class = "line" > < a name = "l00853" > < / a > < span class = "lineno" > 853< / span >   FAISS_THROW_IF_NOT (< a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > );< / div >
< div class = "line" > < a name = "l00854" > < / a > < span class = "lineno" > 854< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *xt = < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aa773a5763ebdd1561152b34453fda96d" > apply_chain< / a > (n, x);< / div >
< div class = "line" > < a name = "l00855" > < / a > < span class = "lineno" > 855< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del(xt == x ? < span class = "keyword" > nullptr< / span > : xt);< / div >
< div class = "line" > < a name = "l00856" > < / a > < span class = "lineno" > 856< / span >   < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#aa6931dfe054b33b02c842ff75f7a0c7f" > add_with_ids< / a > (n, xt, xids);< / div >
< div class = "line" > < a name = "l00857" > < / a > < span class = "lineno" > 857< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > = < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l00858" > < / a > < span class = "lineno" > 858< / span >   }< / div >
< div class = "line" > < a name = "l00859" > < / a > < span class = "lineno" > 859< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00860" > < / a > < span class = "lineno" > 860< / span >   < / div >
2017-07-18 17:43:35 +08:00
< div class = "line" > < a name = "l00861" > < / a > < span class = "lineno" > 861< / span >   < / div >
< div class = "line" > < a name = "l00862" > < / a > < span class = "lineno" > 862< / span >   < / div >
< div class = "line" > < a name = "l00863" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPreTransform.html#a7c2c820895d87083742969c281ae4911" > 863< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#a7c2c820895d87083742969c281ae4911" > IndexPreTransform::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 = "l00864" > < / a > < span class = "lineno" > 864< / 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 = "l00865" > < / a > < span class = "lineno" > 865< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00866" > < / a > < span class = "lineno" > 866< / span >   FAISS_THROW_IF_NOT (< a class = "code" href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > is_trained< / a > );< / div >
< div class = "line" > < a name = "l00867" > < / a > < span class = "lineno" > 867< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *xt = < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aa773a5763ebdd1561152b34453fda96d" > apply_chain< / a > (n, x);< / div >
< div class = "line" > < a name = "l00868" > < / a > < span class = "lineno" > 868< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del(xt == x ? < span class = "keyword" > nullptr< / span > : xt);< / div >
< div class = "line" > < a name = "l00869" > < / a > < span class = "lineno" > 869< / span >   < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7" > search< / a > (n, xt, k, distances, labels);< / div >
< div class = "line" > < a name = "l00870" > < / a > < span class = "lineno" > 870< / span >   }< / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00871" > < / a > < span class = "lineno" > 871< / span >   < / div >
< div class = "line" > < a name = "l00872" > < / a > < span class = "lineno" > 872< / span >   < / div >
2017-07-18 17:43:35 +08:00
< div class = "line" > < a name = "l00873" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPreTransform.html#a8e48ac9fde5e76e378553b2a6ec2c86e" > 873< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#a8e48ac9fde5e76e378553b2a6ec2c86e" > IndexPreTransform::reset< / a > () {< / div >
< div class = "line" > < a name = "l00874" > < / a > < span class = "lineno" > 874< / span >   < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#a849361f5f0ab0aba8d419c86f2594191" > reset< / a > ();< / div >
< div class = "line" > < a name = "l00875" > < / a > < span class = "lineno" > 875< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > = 0;< / div >
< div class = "line" > < a name = "l00876" > < / a > < span class = "lineno" > 876< / span >   }< / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00877" > < / a > < span class = "lineno" > 877< / span >   < / div >
2017-07-18 17:43:35 +08:00
< div class = "line" > < a name = "l00878" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndexPreTransform.html#ad4e59f4dacc1d8183a788510680f0df5" > 878< / a > < / span >   < span class = "keywordtype" > long< / span > < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#ad4e59f4dacc1d8183a788510680f0df5" > IndexPreTransform::remove_ids< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1IDSelector.html" > IDSelector< / a > & sel) {< / div >
< div class = "line" > < a name = "l00879" > < / a > < span class = "lineno" > 879< / span >   < span class = "keywordtype" > long< / span > nremove = < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#af8bf7bd97aeed8ad5fc48b242379a68a" > remove_ids< / a > (sel);< / div >
< div class = "line" > < a name = "l00880" > < / a > < span class = "lineno" > 880< / span >   < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > = < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > ntotal< / a > ;< / div >
< div class = "line" > < a name = "l00881" > < / a > < span class = "lineno" > 881< / span >   < span class = "keywordflow" > return< / span > nremove;< / 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" > < a class = "line" href = "structfaiss_1_1IndexPreTransform.html#a370dd6ef091393401fa9b60e3d1d25b2" > 885< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#a370dd6ef091393401fa9b60e3d1d25b2" > IndexPreTransform::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 = "l00886" > < / a > < span class = "lineno" > 886< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00887" > < / a > < span class = "lineno" > 887< / span >   < span class = "keywordtype" > float< / span > *x = chain.empty() ? recons : < span class = "keyword" > new< / span > < span class = "keywordtype" > float< / span > [ni * < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > d< / a > ];< / div >
< div class = "line" > < a name = "l00888" > < / a > < span class = "lineno" > 888< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del (recons == x ? < span class = "keyword" > nullptr< / span > : x);< / div >
< div class = "line" > < a name = "l00889" > < / a > < span class = "lineno" > 889< / span >   < span class = "comment" > // initial reconstruction< / span > < / div >
< div class = "line" > < a name = "l00890" > < / a > < span class = "lineno" > 890< / span >   < a class = "code" href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > index< / a > -> < a class = "code" href = "structfaiss_1_1Index.html#a1936604fffe16b0ef2a3879305950738" > reconstruct_n< / a > (i0, ni, x);< / div >
< div class = "line" > < a name = "l00891" > < / a > < span class = "lineno" > 891< / span >   < / div >
< div class = "line" > < a name = "l00892" > < / a > < span class = "lineno" > 892< / span >   < span class = "comment" > // revert transformations from last to first< / span > < / div >
< div class = "line" > < a name = "l00893" > < / a > < span class = "lineno" > 893< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = chain.size() - 1; i > = 0; i--) {< / div >
< div class = "line" > < a name = "l00894" > < / a > < span class = "lineno" > 894< / span >   < span class = "keywordtype" > float< / span > *x_pre = i == 0 ? recons : < span class = "keyword" > new< / span > < span class = "keywordtype" > float< / span > [chain[i]-> d_in * ni];< / div >
< div class = "line" > < a name = "l00895" > < / a > < span class = "lineno" > 895< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter.html" > ScopeDeleter< float> < / a > del2 (x_pre == recons ? < span class = "keyword" > nullptr< / span > : x_pre);< / div >
< div class = "line" > < a name = "l00896" > < / a > < span class = "lineno" > 896< / span >   chain [i]-> reverse_transform (ni, x, x_pre);< / div >
< div class = "line" > < a name = "l00897" > < / a > < span class = "lineno" > 897< / span >   del2.swap (del); < span class = "comment" > // delete [] x;< / span > < / div >
< div class = "line" > < a name = "l00898" > < / a > < span class = "lineno" > 898< / span >   x = x_pre;< / div >
< div class = "line" > < a name = "l00899" > < / a > < span class = "lineno" > 899< / span >   }< / div >
< div class = "line" > < a name = "l00900" > < / a > < span class = "lineno" > 900< / span >   }< / div >
< div class = "line" > < a name = "l00901" > < / a > < span class = "lineno" > 901< / span >   < / div >
< div class = "line" > < a name = "l00902" > < / a > < span class = "lineno" > 902< / span >   < / div >
< div class = "line" > < a name = "l00903" > < / a > < span class = "lineno" > 903< / span >   < / div >
< div class = "line" > < a name = "l00904" > < / a > < span class = "lineno" > 904< / span >   < span class = "comment" > /*********************************************< / span > < / div >
< div class = "line" > < a name = "l00905" > < / a > < span class = "lineno" > 905< / span >   < span class = "comment" > * RemapDimensionsTransform< / span > < / div >
< div class = "line" > < a name = "l00906" > < / a > < span class = "lineno" > 906< / span >   < span class = "comment" > *********************************************/< / span > < / div >
< div class = "line" > < a name = "l00907" > < / a > < span class = "lineno" > 907< / span >   < / div >
< div class = "line" > < a name = "l00908" > < / a > < span class = "lineno" > 908< / span >   < / div >
< div class = "line" > < a name = "l00909" > < / a > < span class = "lineno" > 909< / span >   RemapDimensionsTransform::RemapDimensionsTransform (< / div >
< div class = "line" > < a name = "l00910" > < / a > < span class = "lineno" > 910< / span >   < span class = "keywordtype" > int< / span > d_in, < span class = "keywordtype" > int< / span > d_out, < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > *map_in):< / div >
< div class = "line" > < a name = "l00911" > < / a > < span class = "lineno" > 911< / span >   < a class = "code" href = "structfaiss_1_1VectorTransform.html" > VectorTransform< / a > (d_in, d_out)< / div >
< div class = "line" > < a name = "l00912" > < / a > < span class = "lineno" > 912< / span >   {< / div >
< div class = "line" > < a name = "l00913" > < / a > < span class = "lineno" > 913< / span >   map.resize (d_out);< / div >
< div class = "line" > < a name = "l00914" > < / a > < span class = "lineno" > 914< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < d_out; i++) {< / div >
< div class = "line" > < a name = "l00915" > < / a > < span class = "lineno" > 915< / span >   map[i] = map_in[i];< / div >
< div class = "line" > < a name = "l00916" > < / a > < span class = "lineno" > 916< / span >   FAISS_THROW_IF_NOT (map[i] == -1 || (map[i] > = 0 & & map[i] < d_in));< / div >
< div class = "line" > < a name = "l00917" > < / a > < span class = "lineno" > 917< / span >   }< / div >
< div class = "line" > < a name = "l00918" > < / a > < span class = "lineno" > 918< / span >   }< / div >
< div class = "line" > < a name = "l00919" > < / a > < span class = "lineno" > 919< / span >   < / div >
< div class = "line" > < a name = "l00920" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1RemapDimensionsTransform.html#ab07ceccc4dc767a000879c72337ddd69" > 920< / a > < / span >   RemapDimensionsTransform::RemapDimensionsTransform (< / div >
< div class = "line" > < a name = "l00921" > < / a > < span class = "lineno" > 921< / span >   < span class = "keywordtype" > int< / span > d_in, < span class = "keywordtype" > int< / span > d_out, < span class = "keywordtype" > bool< / span > uniform): < a class = "code" href = "structfaiss_1_1VectorTransform.html" > VectorTransform< / a > (d_in, d_out)< / div >
< div class = "line" > < a name = "l00922" > < / a > < span class = "lineno" > 922< / span >   {< / div >
< div class = "line" > < a name = "l00923" > < / a > < span class = "lineno" > 923< / span >   < a class = "code" href = "structfaiss_1_1RemapDimensionsTransform.html#a09202a195ff5f75f83e68792751a637f" > map< / a > .resize (d_out, -1);< / div >
< div class = "line" > < a name = "l00924" > < / a > < span class = "lineno" > 924< / span >   < / div >
< div class = "line" > < a name = "l00925" > < / a > < span class = "lineno" > 925< / span >   < span class = "keywordflow" > if< / span > (uniform) {< / div >
< div class = "line" > < a name = "l00926" > < / a > < span class = "lineno" > 926< / span >   < span class = "keywordflow" > if< / span > (d_in < d_out) {< / div >
< div class = "line" > < a name = "l00927" > < / a > < span class = "lineno" > 927< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < d_in; i++) {< / div >
< div class = "line" > < a name = "l00928" > < / a > < span class = "lineno" > 928< / span >   < a class = "code" href = "structfaiss_1_1RemapDimensionsTransform.html#a09202a195ff5f75f83e68792751a637f" > map< / a > [i * d_out / d_in] = i;< / div >
< div class = "line" > < a name = "l00929" > < / a > < span class = "lineno" > 929< / span >   }< / div >
< div class = "line" > < a name = "l00930" > < / a > < span class = "lineno" > 930< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00931" > < / a > < span class = "lineno" > 931< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; i++) {< / div >
< div class = "line" > < a name = "l00932" > < / a > < span class = "lineno" > 932< / span >   < a class = "code" href = "structfaiss_1_1RemapDimensionsTransform.html#a09202a195ff5f75f83e68792751a637f" > map< / a > [i] = i * d_in / < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ;< / div >
< div class = "line" > < a name = "l00933" > < / a > < span class = "lineno" > 933< / span >   }< / div >
< div class = "line" > < a name = "l00934" > < / a > < span class = "lineno" > 934< / span >   }< / div >
< div class = "line" > < a name = "l00935" > < / a > < span class = "lineno" > 935< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00936" > < / a > < span class = "lineno" > 936< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < d_in & & i < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; i++)< / div >
< div class = "line" > < a name = "l00937" > < / a > < span class = "lineno" > 937< / span >   < a class = "code" href = "structfaiss_1_1RemapDimensionsTransform.html#a09202a195ff5f75f83e68792751a637f" > map< / a > [i] = i;< / div >
< div class = "line" > < a name = "l00938" > < / a > < span class = "lineno" > 938< / span >   }< / div >
< div class = "line" > < a name = "l00939" > < / a > < span class = "lineno" > 939< / span >   }< / div >
< div class = "line" > < a name = "l00940" > < / a > < span class = "lineno" > 940< / span >   < / div >
< div class = "line" > < a name = "l00941" > < / a > < span class = "lineno" > 941< / span >   < / div >
< div class = "line" > < a name = "l00942" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1RemapDimensionsTransform.html#a550be3d40c221d2134bf06a13dd33c4d" > 942< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1RemapDimensionsTransform.html#a550be3d40c221d2134bf06a13dd33c4d" > RemapDimensionsTransform::apply_noalloc< / a > (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * x,< / div >
< div class = "line" > < a name = "l00943" > < / a > < span class = "lineno" > 943< / span >   < span class = "keywordtype" > float< / span > *xt)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00944" > < / a > < span class = "lineno" > 944< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00945" > < / a > < span class = "lineno" > 945< / span >   < span class = "keywordflow" > for< / span > (idx_t i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00946" > < / a > < span class = "lineno" > 946< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; j++) {< / div >
< div class = "line" > < a name = "l00947" > < / a > < span class = "lineno" > 947< / span >   xt[j] = < a class = "code" href = "structfaiss_1_1RemapDimensionsTransform.html#a09202a195ff5f75f83e68792751a637f" > map< / a > [j] < 0 ? 0 : x[< a class = "code" href = "structfaiss_1_1RemapDimensionsTransform.html#a09202a195ff5f75f83e68792751a637f" > map< / a > [j]];< / div >
< div class = "line" > < a name = "l00948" > < / a > < span class = "lineno" > 948< / span >   }< / div >
< div class = "line" > < a name = "l00949" > < / a > < span class = "lineno" > 949< / span >   x += d_in;< / div >
< div class = "line" > < a name = "l00950" > < / a > < span class = "lineno" > 950< / span >   xt += < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ;< / div >
< div class = "line" > < a name = "l00951" > < / a > < span class = "lineno" > 951< / span >   }< / div >
< div class = "line" > < a name = "l00952" > < / a > < span class = "lineno" > 952< / span >   }< / div >
< div class = "line" > < a name = "l00953" > < / a > < span class = "lineno" > 953< / span >   < / div >
< div class = "line" > < a name = "l00954" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1RemapDimensionsTransform.html#a2fc83e79e4d3c7853bfd6931cbbaf82a" > 954< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1RemapDimensionsTransform.html#a2fc83e79e4d3c7853bfd6931cbbaf82a" > RemapDimensionsTransform::reverse_transform< / a > (idx_t n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * xt,< / div >
< div class = "line" > < a name = "l00955" > < / a > < span class = "lineno" > 955< / span >   < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00956" > < / a > < span class = "lineno" > 956< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00957" > < / a > < span class = "lineno" > 957< / span >   memset (x, 0, < span class = "keyword" > sizeof< / span > (*x) * n * d_in);< / div >
< div class = "line" > < a name = "l00958" > < / a > < span class = "lineno" > 958< / span >   < span class = "keywordflow" > for< / span > (idx_t i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00959" > < / a > < span class = "lineno" > 959< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ; j++) {< / div >
< div class = "line" > < a name = "l00960" > < / a > < span class = "lineno" > 960< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1RemapDimensionsTransform.html#a09202a195ff5f75f83e68792751a637f" > map< / a > [j] > = 0) x[< a class = "code" href = "structfaiss_1_1RemapDimensionsTransform.html#a09202a195ff5f75f83e68792751a637f" > map< / a > [j]] = xt[j];< / div >
< div class = "line" > < a name = "l00961" > < / a > < span class = "lineno" > 961< / span >   }< / div >
< div class = "line" > < a name = "l00962" > < / a > < span class = "lineno" > 962< / span >   x += d_in;< / div >
< div class = "line" > < a name = "l00963" > < / a > < span class = "lineno" > 963< / span >   xt += < a class = "code" href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > d_out< / a > ;< / div >
< div class = "line" > < a name = "l00964" > < / a > < span class = "lineno" > 964< / span >   }< / div >
< div class = "line" > < a name = "l00965" > < / a > < span class = "lineno" > 965< / span >   }< / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1LinearTransform_html_a1642efca4f5eb524c29722b0441c4d13" > < div class = "ttname" > < a href = "structfaiss_1_1LinearTransform.html#a1642efca4f5eb524c29722b0441c4d13" > faiss::LinearTransform::transform_transpose< / a > < / div > < div class = "ttdeci" > void transform_transpose(idx_t n, const float *y, float *x) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00134" > VectorTransform.cpp:134< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexPreTransform_html_aee3cbbe7915ec9ed13d59ca9276bdefc" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPreTransform.html#aee3cbbe7915ec9ed13d59ca9276bdefc" > faiss::IndexPreTransform::index< / a > < / div > < div class = "ttdeci" > Index * index< / div > < div class = "ttdoc" > ! chain of tranforms < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00242" > VectorTransform.h:242< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1RandomRotationMatrix_html" > < div class = "ttname" > < a href = "structfaiss_1_1RandomRotationMatrix.html" > faiss::RandomRotationMatrix< / a > < / div > < div class = "ttdoc" > Randomly rotate a set of vectors. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00107" > VectorTransform.h:107< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1ClusteringParameters_html_a5c7c6f05c75e1668befdb3be148fd5f9" > < div class = "ttname" > < a href = "structfaiss_1_1ClusteringParameters.html#a5c7c6f05c75e1668befdb3be148fd5f9" > faiss::ClusteringParameters::niter< / a > < / div > < div class = "ttdeci" > int niter< / div > < div class = "ttdoc" > clustering iterations < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Clustering_8h_source.html#l00025" > Clustering.h:25< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1OPQMatrix_html_a12cb3e05989dee37592b682070c31000" > < div class = "ttname" > < a href = "structfaiss_1_1OPQMatrix.html#a12cb3e05989dee37592b682070c31000" > faiss::OPQMatrix::niter< / a > < / div > < div class = "ttdeci" > int niter< / div > < div class = "ttdoc" > Number of outer training iterations. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00183" > VectorTransform.h:183< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
< 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 >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "namespacefaiss_html_a7466bd32de31640860393a701eaac5ad" > < div class = "ttname" > < a href = "namespacefaiss.html#a7466bd32de31640860393a701eaac5ad" > faiss::fvec_L2sqr< / a > < / div > < div class = "ttdeci" > float fvec_L2sqr(const float *x, const float *y, size_t d)< / div > < div class = "ttdoc" > Squared L2 distance between two vectors. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8cpp_source.html#l00481" > utils.cpp:481< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1RandomRotationMatrix_html_a857ad8c32fb76b3298d4eea4338ff66f" > < div class = "ttname" > < a href = "structfaiss_1_1RandomRotationMatrix.html#a857ad8c32fb76b3298d4eea4338ff66f" > faiss::RandomRotationMatrix::init< / a > < / div > < div class = "ttdeci" > void init(int seed)< / div > < div class = "ttdoc" > must be called before the transform is used < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00164" > VectorTransform.cpp:164< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexPreTransform_html_a8e48ac9fde5e76e378553b2a6ec2c86e" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPreTransform.html#a8e48ac9fde5e76e378553b2a6ec2c86e" > faiss::IndexPreTransform::reset< / a > < / div > < div class = "ttdeci" > void reset() override< / div > < div class = "ttdoc" > removes all elements from the database. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00873" > VectorTransform.cpp:873< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
< div class = "ttc" id = "structfaiss_1_1Index_html_a849361f5f0ab0aba8d419c86f2594191" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a849361f5f0ab0aba8d419c86f2594191" > faiss::Index::reset< / a > < / div > < div class = "ttdeci" > virtual void reset()=0< / div > < div class = "ttdoc" > removes all elements from the database. < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1OPQMatrix_html_ab88c87a3931ec356904abf5f1f797a83" > < div class = "ttname" > < a href = "structfaiss_1_1OPQMatrix.html#ab88c87a3931ec356904abf5f1f797a83" > faiss::OPQMatrix::niter_pq< / a > < / div > < div class = "ttdeci" > int niter_pq< / div > < div class = "ttdoc" > Number of training iterations for the PQ. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00184" > VectorTransform.h:184< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1LinearTransform_html_aa40e156ef57fe206cd5f3a58ec0660da" > < div class = "ttname" > < a href = "structfaiss_1_1LinearTransform.html#aa40e156ef57fe206cd5f3a58ec0660da" > faiss::LinearTransform::A< / a > < / div > < div class = "ttdeci" > std::vector< float > A< / div > < div class = "ttdoc" > ! whether to use the bias term < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00082" > VectorTransform.h:82< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "namespacefaiss_html_a14884d253128c7af5891a65082ad7dc6" > < div class = "ttname" > < a href = "namespacefaiss.html#a14884d253128c7af5891a65082ad7dc6" > faiss::fvecs_maybe_subsample< / a > < / div > < div class = "ttdeci" > const float * fvecs_maybe_subsample(size_t d, size_t *n, size_t nmax, const float *x, bool verbose, long seed)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8cpp_source.html#l01941" > utils.cpp:1941< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html_a4e48e801f98ba2cf57c03b0913d6fafc" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html#a4e48e801f98ba2cf57c03b0913d6fafc" > faiss::PCAMatrix::eigen_power< / a > < / div > < div class = "ttdeci" > float eigen_power< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00132" > VectorTransform.h:132< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IDSelector_html" > < div class = "ttname" > < a href = "structfaiss_1_1IDSelector.html" > faiss::IDSelector< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "AuxIndexStructures_8h_source.html#l00052" > AuxIndexStructures.h:52< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1LinearTransform_html_a2fffd6064defb7c3fdaf143c0c4a9bc7" > < div class = "ttname" > < a href = "structfaiss_1_1LinearTransform.html#a2fffd6064defb7c3fdaf143c0c4a9bc7" > faiss::LinearTransform::LinearTransform< / a > < / div > < div class = "ttdeci" > LinearTransform(int d_in=0, int d_out=0, bool have_bias=false)< / div > < div class = "ttdoc" > both d_in & gt; d_out and d_out & lt; d_in are supported < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00099" > VectorTransform.cpp:99< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html" > faiss::PCAMatrix< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00124" > VectorTransform.h:124< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1Index_html_aa6931dfe054b33b02c842ff75f7a0c7f" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#aa6931dfe054b33b02c842ff75f7a0c7f" > faiss::Index::add_with_ids< / a > < / div > < div class = "ttdeci" > virtual void add_with_ids(idx_t n, const float *x, const long *xids)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8cpp_source.html#l00031" > Index.cpp:31< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ScopeDeleter_html" > < div class = "ttname" > < a href = "structfaiss_1_1ScopeDeleter.html" > faiss::ScopeDeleter< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "FaissException_8h_source.html#l00039" > FaissException.h:39< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html_a8f2dd12da8dce3cbeb22da9c5d4ec3e7" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html#a8f2dd12da8dce3cbeb22da9c5d4ec3e7" > faiss::PCAMatrix::train< / a > < / div > < div class = "ttdeci" > void train(Index::idx_t n, const float *x) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00271" > VectorTransform.cpp:271< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html_a721c338c1df5c99471db82e6d3dc8f93" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html#a721c338c1df5c99471db82e6d3dc8f93" > faiss::PCAMatrix::mean< / a > < / div > < div class = "ttdeci" > std::vector< float > mean< / div > < div class = "ttdoc" > Mean, size d_in. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00144" > VectorTransform.h:144< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1RemapDimensionsTransform_html_a09202a195ff5f75f83e68792751a637f" > < div class = "ttname" > < a href = "structfaiss_1_1RemapDimensionsTransform.html#a09202a195ff5f75f83e68792751a637f" > faiss::RemapDimensionsTransform::map< / a > < / div > < div class = "ttdeci" > std::vector< int > map< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00207" > VectorTransform.h:207< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPreTransform_html_aa773a5763ebdd1561152b34453fda96d" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPreTransform.html#aa773a5763ebdd1561152b34453fda96d" > faiss::IndexPreTransform::apply_chain< / a > < / div > < div class = "ttdeci" > const float * apply_chain(idx_t n, const float *x) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00826" > VectorTransform.cpp:826< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html_aef5c130774e5d4f697a3e1c82647bfd3" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html#aef5c130774e5d4f697a3e1c82647bfd3" > faiss::PCAMatrix::PCAMat< / a > < / div > < div class = "ttdeci" > std::vector< float > PCAMat< / div > < div class = "ttdoc" > PCA matrix, size d_in * d_in. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00150" > VectorTransform.h:150< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPreTransform_html_a416aaf28d7a533dcf7d2d7de434e993c" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPreTransform.html#a416aaf28d7a533dcf7d2d7de434e993c" > faiss::IndexPreTransform::train< / a > < / div > < div class = "ttdeci" > void train(idx_t n, const float *x) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00790" > VectorTransform.cpp:790< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
< 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 >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1Index_html_a2a002388d2c081c2dbab8508dcefe73d" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d" > faiss::Index::d< / a > < / div > < div class = "ttdeci" > int d< / div > < div class = "ttdoc" > vector dimension < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00064" > Index.h:64< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1LinearTransform_html_ab0383f690aeb823876e9143febad1a87" > < div class = "ttname" > < a href = "structfaiss_1_1LinearTransform.html#ab0383f690aeb823876e9143febad1a87" > faiss::LinearTransform::b< / a > < / div > < div class = "ttdeci" > std::vector< float > b< / div > < div class = "ttdoc" > bias vector, size d_out < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00085" > VectorTransform.h:85< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
< div class = "ttc" id = "structfaiss_1_1Index_html_a1936604fffe16b0ef2a3879305950738" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a1936604fffe16b0ef2a3879305950738" > faiss::Index::reconstruct_n< / a > < / div > < div class = "ttdeci" > virtual void reconstruct_n(idx_t i0, idx_t ni, float *recons) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8cpp_source.html#l00050" > Index.cpp:50< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_a1b5e9ac70adbce0897dd6c8276ad96f2" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a1b5e9ac70adbce0897dd6c8276ad96f2" > faiss::Index::add< / a > < / div > < div class = "ttdeci" > virtual void add(idx_t n, const float *x)=0< / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1LinearTransform_html" > < div class = "ttname" > < a href = "structfaiss_1_1LinearTransform.html" > faiss::LinearTransform< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00077" > VectorTransform.h:77< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1OPQMatrix_html_a1e314577db0c6cd4a709503f73eb71e2" > < div class = "ttname" > < a href = "structfaiss_1_1OPQMatrix.html#a1e314577db0c6cd4a709503f73eb71e2" > faiss::OPQMatrix::train< / a > < / div > < div class = "ttdeci" > void train(Index::idx_t n, const float *x) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00547" > VectorTransform.cpp:547< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html_ac9a4c97b5861081dfd8ca5881bb1a677" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html#ac9a4c97b5861081dfd8ca5881bb1a677" > faiss::PCAMatrix::balanced_bins< / a > < / div > < div class = "ttdeci" > int balanced_bins< / div > < div class = "ttdoc" > try to distribute output eigenvectors in this many bins < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00141" > VectorTransform.h:141< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1VectorTransform_html_ab511f1ddf608c00204555881ca28cb02" > < div class = "ttname" > < a href = "structfaiss_1_1VectorTransform.html#ab511f1ddf608c00204555881ca28cb02" > faiss::VectorTransform::is_trained< / a > < / div > < div class = "ttdeci" > bool is_trained< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00042" > VectorTransform.h:42< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_a040c6aed1f224f3ea7bf58eebc0c31a4" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4" > faiss::Index::idx_t< / a > < / div > < div class = "ttdeci" > long idx_t< / div > < div class = "ttdoc" > all indices are this type < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00062" > Index.h:62< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexPreTransform_html_a370dd6ef091393401fa9b60e3d1d25b2" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPreTransform.html#a370dd6ef091393401fa9b60e3d1d25b2" > faiss::IndexPreTransform::reconstruct_n< / a > < / div > < div class = "ttdeci" > void reconstruct_n(idx_t i0, idx_t ni, float *recons) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00885" > VectorTransform.cpp:885< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1Index_html_a6970683faa021b7a6f1a0865c0d4eccd" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd" > faiss::Index::ntotal< / a > < / div > < div class = "ttdeci" > idx_t ntotal< / div > < div class = "ttdoc" > total nb of indexed vectors < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00065" > Index.h:65< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1NormalizationTransform_html_a80c94dc7d17c9a7a9edc627150401571" > < div class = "ttname" > < a href = "structfaiss_1_1NormalizationTransform.html#a80c94dc7d17c9a7a9edc627150401571" > faiss::NormalizationTransform::apply_noalloc< / a > < / div > < div class = "ttdeci" > void apply_noalloc(idx_t n, const float *x, float *xt) const override< / div > < div class = "ttdoc" > same as apply, but result is pre-allocated < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00730" > VectorTransform.cpp:730< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a3a41c6286095e731be744548d9535a35a4960d143d2aa49cf92028cf3470c47a0" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a3a41c6286095e731be744548d9535a35a4960d143d2aa49cf92028cf3470c47a0" > faiss::ProductQuantizer::Train_hot_start< / a > < / div > < div class = "ttdoc" > the centroids are already initialized < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00042" > ProductQuantizer.h:42< / a > < / div > < / div >
< div class = "ttc" id = "namespacefaiss_html_af2a71f7d5402ae02ce169a4cc83020eb" > < div class = "ttname" > < a href = "namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb" > faiss::getmillisecs< / a > < / div > < div class = "ttdeci" > double getmillisecs()< / div > < div class = "ttdoc" > ms elapsed since some arbitrary epoch < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8cpp_source.html#l00070" > utils.cpp:70< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_af8bf7bd97aeed8ad5fc48b242379a68a" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#af8bf7bd97aeed8ad5fc48b242379a68a" > faiss::Index::remove_ids< / a > < / div > < div class = "ttdeci" > virtual long remove_ids(const IDSelector & sel)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8cpp_source.html#l00037" > Index.cpp:37< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
< div class = "ttc" id = "structfaiss_1_1Index_html_aced51b1ebc33c47ab3ae15ea906559a7" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7" > faiss::Index::search< / a > < / div > < div class = "ttdeci" > virtual void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const =0< / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1VectorTransform_html" > < div class = "ttname" > < a href = "structfaiss_1_1VectorTransform.html" > faiss::VectorTransform< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00028" > VectorTransform.h:28< / a > < / div > < / div >
< div class = "ttc" id = "namespacefaiss_html_afb68fe89ad5e948974da1b70d7b4157c" > < div class = "ttname" > < a href = "namespacefaiss.html#afb68fe89ad5e948974da1b70d7b4157c" > faiss::matrix_qr< / a > < / div > < div class = "ttdeci" > void matrix_qr(int m, int n, float *a)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8cpp_source.html#l01289" > utils.cpp:1289< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexPreTransform_html_ae5ec3f184eb211e7d6e204082b52c8c0" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPreTransform.html#ae5ec3f184eb211e7d6e204082b52c8c0" > faiss::IndexPreTransform::own_fields< / a > < / div > < div class = "ttdeci" > bool own_fields< / div > < div class = "ttdoc" > ! the sub-index < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00244" > VectorTransform.h:244< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1OPQMatrix_html_a6406e97b05c831cc19b9343be3b43a1f" > < div class = "ttname" > < a href = "structfaiss_1_1OPQMatrix.html#a6406e97b05c831cc19b9343be3b43a1f" > faiss::OPQMatrix::niter_pq_0< / a > < / div > < div class = "ttdeci" > int niter_pq_0< / div > < div class = "ttdoc" > same, for the first outer iteration < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00185" > VectorTransform.h:185< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1OPQMatrix_html_a8e61a84ea6bcbdee1809028b6aaa3aae" > < div class = "ttname" > < a href = "structfaiss_1_1OPQMatrix.html#a8e61a84ea6bcbdee1809028b6aaa3aae" > faiss::OPQMatrix::reverse_transform< / a > < / div > < div class = "ttdeci" > void reverse_transform(idx_t n, const float *xt, float *x) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00708" > VectorTransform.cpp:708< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_af265acf5aa1bcda60898002287e6a3d6" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#af265acf5aa1bcda60898002287e6a3d6" > faiss::ProductQuantizer::cp< / a > < / div > < div class = "ttdeci" > ClusteringParameters cp< / div > < div class = "ttdoc" > parameters used during clustering < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00049" > ProductQuantizer.h:49< / a > < / div > < / div >
< div class = "ttc" id = "namespacefaiss_html_a4369329c9dbdfe23e3f35d09ba7b5c6e" > < div class = "ttname" > < a href = "namespacefaiss.html#a4369329c9dbdfe23e3f35d09ba7b5c6e" > faiss::ivec_checksum< / a > < / div > < div class = "ttdeci" > size_t ivec_checksum(size_t n, const int *a)< / div > < div class = "ttdoc" > compute a checksum on a table. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8cpp_source.html#l01638" > utils.cpp:1638< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1VectorTransform_html_a7350d4dd28d60866d55ba4f75d2da84c" > < div class = "ttname" > < a href = "structfaiss_1_1VectorTransform.html#a7350d4dd28d60866d55ba4f75d2da84c" > faiss::VectorTransform::train< / a > < / div > < div class = "ttdeci" > virtual void train(idx_t n, const float *x)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00080" > VectorTransform.cpp:80< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1RandomRotationMatrix_html_a3ad86e9ae3bdc2090c1f5fc62a335c16" > < div class = "ttname" > < a href = "structfaiss_1_1RandomRotationMatrix.html#a3ad86e9ae3bdc2090c1f5fc62a335c16" > faiss::RandomRotationMatrix::reverse_transform< / a > < / div > < div class = "ttdeci" > void reverse_transform(idx_t n, const float *xt, float *x) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00189" > VectorTransform.cpp:189< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1VectorTransform_html_a101ce54f1c60df19478801aa942470d9" > < div class = "ttname" > < a href = "structfaiss_1_1VectorTransform.html#a101ce54f1c60df19478801aa942470d9" > faiss::VectorTransform::reverse_transform< / a > < / div > < div class = "ttdeci" > virtual void reverse_transform(idx_t n, const float *xt, float *x) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00085" > VectorTransform.cpp:85< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1RemapDimensionsTransform_html_a2fc83e79e4d3c7853bfd6931cbbaf82a" > < div class = "ttname" > < a href = "structfaiss_1_1RemapDimensionsTransform.html#a2fc83e79e4d3c7853bfd6931cbbaf82a" > faiss::RemapDimensionsTransform::reverse_transform< / a > < / div > < div class = "ttdeci" > void reverse_transform(idx_t n, const float *xt, float *x) const override< / div > < div class = "ttdoc" > reverse transform correct only when the mapping is a permuation < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00954" > VectorTransform.cpp:954< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html_abf427521a66cbfaaf0b7aae16bcb6e93" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html#abf427521a66cbfaaf0b7aae16bcb6e93" > faiss::PCAMatrix::reverse_transform< / a > < / div > < div class = "ttdeci" > void reverse_transform(idx_t n, const float *xt, float *x) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00521" > VectorTransform.cpp:521< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1OPQMatrix_html_afdd5b2c74d19ccc5c7a6e0199333321a" > < div class = "ttname" > < a href = "structfaiss_1_1OPQMatrix.html#afdd5b2c74d19ccc5c7a6e0199333321a" > faiss::OPQMatrix::max_train_points< / a > < / div > < div class = "ttdeci" > size_t max_train_points< / div > < div class = "ttdoc" > if there are too many training points, resample < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00188" > VectorTransform.h:188< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html_ae586dc89db6c57753c687473417742a6" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html#ae586dc89db6c57753c687473417742a6" > faiss::PCAMatrix::copy_from< / a > < / div > < div class = "ttdeci" > void copy_from(const PCAMatrix & other)< / div > < div class = "ttdoc" > copy pre-trained PCA matrix < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00416" > VectorTransform.cpp:416< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1VectorTransform_html_a589d612f7b1773614619a0cbecd728a9" > < div class = "ttname" > < a href = "structfaiss_1_1VectorTransform.html#a589d612f7b1773614619a0cbecd728a9" > faiss::VectorTransform::d_out< / a > < / div > < div class = "ttdeci" > int d_out< / div > < div class = "ttdoc" > ! input dimension < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00033" > VectorTransform.h:33< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1OPQMatrix_html_a6eb9d18ff15b1c598d3aa3bc9ab84519" > < div class = "ttname" > < a href = "structfaiss_1_1OPQMatrix.html#a6eb9d18ff15b1c598d3aa3bc9ab84519" > faiss::OPQMatrix::OPQMatrix< / a > < / div > < div class = "ttdeci" > OPQMatrix(int d=0, int M=1, int d2=-1)< / div > < div class = "ttdoc" > if d2 != -1, output vectors of this dimension < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00534" > VectorTransform.cpp:534< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html" > faiss::Index< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00060" > Index.h:60< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html_a117a70b8fca6d125725fe49fddebf97b" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html#a117a70b8fca6d125725fe49fddebf97b" > faiss::PCAMatrix::prepare_Ab< / a > < / div > < div class = "ttdeci" > void prepare_Ab()< / div > < div class = "ttdoc" > called after mean, PCAMat and eigenvalues are computed < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00426" > VectorTransform.cpp:426< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexPreTransform_html_a03c77c582a3421952e2cba2057083059" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPreTransform.html#a03c77c582a3421952e2cba2057083059" > faiss::IndexPreTransform::add< / a > < / div > < div class = "ttdeci" > void add(idx_t n, const float *x) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00841" > VectorTransform.cpp:841< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1RemapDimensionsTransform_html_a550be3d40c221d2134bf06a13dd33c4d" > < div class = "ttname" > < a href = "structfaiss_1_1RemapDimensionsTransform.html#a550be3d40c221d2134bf06a13dd33c4d" > faiss::RemapDimensionsTransform::apply_noalloc< / a > < / div > < div class = "ttdeci" > void apply_noalloc(idx_t n, const float *x, float *xt) const override< / div > < div class = "ttdoc" > same as apply, but result is pre-allocated < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00942" > VectorTransform.cpp:942< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html" > faiss::ProductQuantizer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00025" > ProductQuantizer.h:25< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Index_html_a6e92732617c4dbe364e7678dd8773a7f" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f" > faiss::Index::is_trained< / a > < / div > < div class = "ttdeci" > bool is_trained< / div > < div class = "ttdoc" > set if the Index does not require training, or if training is done already < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00069" > Index.h:69< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html_ae80e130c0667b66cea608c4926d7d561" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html#ae80e130c0667b66cea608c4926d7d561" > faiss::PCAMatrix::eigenvalues< / a > < / div > < div class = "ttdeci" > std::vector< float > eigenvalues< / div > < div class = "ttdoc" > eigenvalues of covariance matrix (= squared singular values) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00147" > VectorTransform.h:147< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexPreTransform_html_a7c2c820895d87083742969c281ae4911" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPreTransform.html#a7c2c820895d87083742969c281ae4911" > faiss::IndexPreTransform::search< / a > < / div > < div class = "ttdeci" > void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00863" > VectorTransform.cpp:863< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1Index_html_a8f67dfd73993e192dc78f2c93d9d9532" > < div class = "ttname" > < a href = "structfaiss_1_1Index.html#a8f67dfd73993e192dc78f2c93d9d9532" > faiss::Index::train< / a > < / div > < div class = "ttdeci" > virtual void train(idx_t n, const float *x)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Index_8h_source.html#l00089" > Index.h:89< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexPreTransform_html_a07fef0553b2ef2907f394470f61898b2" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPreTransform.html#a07fef0553b2ef2907f394470f61898b2" > faiss::IndexPreTransform::add_with_ids< / a > < / div > < div class = "ttdeci" > void add_with_ids(idx_t n, const float *x, const long *xids) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00850" > VectorTransform.cpp:850< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html_af111f055b7571703a3aa270d89e99321" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html#af111f055b7571703a3aa270d89e99321" > faiss::PCAMatrix::random_rotation< / a > < / div > < div class = "ttdeci" > bool random_rotation< / div > < div class = "ttdoc" > random rotation after PCA < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00135" > VectorTransform.h:135< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1PCAMatrix_html_abdce90f57a3c4401f5230f03da901e0d" > < div class = "ttname" > < a href = "structfaiss_1_1PCAMatrix.html#abdce90f57a3c4401f5230f03da901e0d" > faiss::PCAMatrix::max_points_per_d< / a > < / div > < div class = "ttdeci" > size_t max_points_per_d< / div > < div class = "ttdoc" > ratio between # training vectors and dimension < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00138" > VectorTransform.h:138< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1ClusteringParameters_html_a993e0a035248faad6e292a5ef9af1953" > < div class = "ttname" > < a href = "structfaiss_1_1ClusteringParameters.html#a993e0a035248faad6e292a5ef9af1953" > faiss::ClusteringParameters::max_points_per_centroid< / a > < / div > < div class = "ttdeci" > int max_points_per_centroid< / div > < div class = "ttdoc" > to limit size of dataset < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Clustering_8h_source.html#l00033" > Clustering.h:33< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1VectorTransform_html_af3b3a8bf95911f4b28128001c83f91a5" > < div class = "ttname" > < a href = "structfaiss_1_1VectorTransform.html#af3b3a8bf95911f4b28128001c83f91a5" > faiss::VectorTransform::apply< / a > < / div > < div class = "ttdeci" > float * apply(idx_t n, const float *x) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00072" > VectorTransform.cpp:72< / a > < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1IndexPreTransform_html_ad4e59f4dacc1d8183a788510680f0df5" > < div class = "ttname" > < a href = "structfaiss_1_1IndexPreTransform.html#ad4e59f4dacc1d8183a788510680f0df5" > faiss::IndexPreTransform::remove_ids< / a > < / div > < div class = "ttdeci" > long remove_ids(const IDSelector & sel) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00878" > VectorTransform.cpp:878< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
< div class = "ttc" id = "structfaiss_1_1VectorTransform_html_a90f1a218c224c049f1bd8b77a78d6aa0" > < div class = "ttname" > < a href = "structfaiss_1_1VectorTransform.html#a90f1a218c224c049f1bd8b77a78d6aa0" > faiss::VectorTransform::apply_noalloc< / a > < / div > < div class = "ttdeci" > virtual void apply_noalloc(idx_t n, const float *x, float *xt) const =0< / div > < div class = "ttdoc" > same as apply, but result is pre-allocated < / div > < / div >
2017-07-18 17:43:35 +08:00
< div class = "ttc" id = "structfaiss_1_1OPQMatrix_html_a07ad0c0c84f96a6880c1c8eaf09596e3" > < div class = "ttname" > < a href = "structfaiss_1_1OPQMatrix.html#a07ad0c0c84f96a6880c1c8eaf09596e3" > faiss::OPQMatrix::M< / a > < / div > < div class = "ttdeci" > int M< / div > < div class = "ttdoc" > nb of subquantizers < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8h_source.html#l00182" > VectorTransform.h:182< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1LinearTransform_html_af9c20b4ae67691b5713489884ca9f80f" > < div class = "ttname" > < a href = "structfaiss_1_1LinearTransform.html#af9c20b4ae67691b5713489884ca9f80f" > faiss::LinearTransform::apply_noalloc< / a > < / div > < div class = "ttdeci" > void apply_noalloc(idx_t n, const float *x, float *xt) const override< / div > < div class = "ttdoc" > same as apply, but result is pre-allocated < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "VectorTransform_8cpp_source.html#l00105" > VectorTransform.cpp:105< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
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