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2017-02-23 06:26:44 +08:00
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< div class = "title" > /data/users/hoss/faiss/PolysemousTraining.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 >
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< div class = "line" > < a name = "l00002" > < / a > < span class = "lineno" > 2< / span >   < span class = "comment" > * Copyright (c) Facebook, Inc. and its affiliates.< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < span class = "comment" > * This source code is licensed under the MIT license found in the< / span > < / div >
< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / span >   < span class = "comment" > * LICENSE file in the root directory of this source tree.< / span > < / div >
< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < span class = "comment" > // -*- c++ -*-< / span > < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "preprocessor" > #include " PolysemousTraining.h" < / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #include < cstdlib> < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "preprocessor" > #include < cmath> < / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include < cstring> < / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #include < algorithm> < / 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 " hamming.h" < / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "preprocessor" > #include " FaissAssert.h" < / span > < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "comment" > /*****************************************< / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "comment" > * Mixed PQ / Hamming< / span > < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "comment" > ******************************************/< / 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 = "keyword" > namespace < / span > faiss {< / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < / div >
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< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < / div >
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< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "comment" > /****************************************************< / span > < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < span class = "comment" > * Optimization code< / span > < / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "comment" > ****************************************************/< / span > < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   SimulatedAnnealingParameters::SimulatedAnnealingParameters ()< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   {< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "comment" > // set some reasonable defaults for the optimization< / span > < / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   init_temperature = 0.7;< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   temperature_decay = pow (0.9, 1/500.);< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "comment" > // reduce by a factor 0.9 every 500 it< / span > < / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   n_iter = 500000;< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   n_redo = 2;< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   seed = 123;< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   verbose = 0;< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   only_bit_flips = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   init_random = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   }< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "comment" > // what would the cost update be if iw and jw were swapped?< / span > < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "comment" > // default implementation just computes both and computes the difference< / span > < / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "keywordtype" > double< / span > PermutationObjective::cost_update (< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > *perm, < span class = "keywordtype" > int< / span > iw, < span class = "keywordtype" > int< / span > jw)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "keywordtype" > double< / span > orig_cost = compute_cost (perm);< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   std::vector< int> perm2 (n);< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++)< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   perm2[i] = perm[i];< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   perm2[iw] = perm[jw];< / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   perm2[jw] = perm[iw];< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "keywordtype" > double< / span > new_cost = compute_cost (perm2.data());< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < span class = "keywordflow" > return< / span > new_cost - orig_cost;< / 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 >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < / div >
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< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < / div >
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< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1SimulatedAnnealingOptimizer.html#ab258eaf892742e37dd2c3bfd3b1c39e1" > 68< / a > < / span >   < a class = "code" href = "structfaiss_1_1SimulatedAnnealingOptimizer.html#ab258eaf892742e37dd2c3bfd3b1c39e1" > SimulatedAnnealingOptimizer::SimulatedAnnealingOptimizer< / a > (< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < a class = "code" href = "structfaiss_1_1PermutationObjective.html" > PermutationObjective< / a > *obj,< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "structfaiss_1_1SimulatedAnnealingParameters.html" > SimulatedAnnealingParameters< / a > & p):< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < a class = "code" href = "structfaiss_1_1SimulatedAnnealingParameters.html" > SimulatedAnnealingParameters< / a > (p),< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   obj (obj),< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   n(obj-> n),< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   logfile (nullptr)< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   {< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   rnd = < span class = "keyword" > new< / span > < a class = "code" href = "structfaiss_1_1RandomGenerator.html" > RandomGenerator< / a > (p.seed);< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   FAISS_THROW_IF_NOT (n < 100000 & & n > =0 );< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   }< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   SimulatedAnnealingOptimizer::~SimulatedAnnealingOptimizer ()< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   {< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < span class = "keyword" > delete< / span > rnd;< / 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" > 85< / span >   < span class = "comment" > // run the optimization and return the best result in best_perm< / span > < / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < span class = "keywordtype" > double< / span > SimulatedAnnealingOptimizer::run_optimization (< span class = "keywordtype" > int< / span > * best_perm)< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   {< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < span class = "keywordtype" > double< / span > min_cost = 1e30;< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < span class = "comment" > // just do a few runs of the annealing and keep the lowest output cost< / span > < / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > it = 0; it < n_redo; it++) {< / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   std::vector< int> perm(n);< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1SimulatedAnnealingOptimizer.html#a90edfc401372aa1a2a832b403e26bfd1" > n< / a > ; i++)< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   perm[i] = i;< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "keywordflow" > if< / span > (init_random) {< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < < a class = "code" href = "structfaiss_1_1SimulatedAnnealingOptimizer.html#a90edfc401372aa1a2a832b403e26bfd1" > n< / a > ; i++) {< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "keywordtype" > int< / span > j = i + rnd-> < a class = "code" href = "structfaiss_1_1RandomGenerator.html#a583f124ecacdbe037ac96e23a44dd420" > rand_int< / a > (n - i);< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   std::swap (perm[i], perm[j]);< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   }< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   }< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < span class = "keywordtype" > float< / span > cost = optimize (perm.data());< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < span class = "keywordflow" > if< / span > (logfile) fprintf (logfile, < span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < span class = "keywordflow" > if< / span > (verbose > 1) {< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   printf (< span class = "stringliteral" > " optimization run %d: cost=%g %s\n" < / span > ,< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   it, cost, cost < min_cost ? < span class = "stringliteral" > " keep" < / span > : < span class = "stringliteral" > " " < / span > );< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   }< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "keywordflow" > if< / span > (cost < min_cost) {< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   memcpy (best_perm, perm.data(), < span class = "keyword" > sizeof< / span > (perm[0]) * n);< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   min_cost = cost;< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   }< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   }< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "keywordflow" > return< / span > min_cost;< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   }< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "comment" > // perform the optimization loop, starting from and modifying< / span > < / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < span class = "comment" > // permutation in-place< / span > < / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   < span class = "keywordtype" > double< / span > SimulatedAnnealingOptimizer::optimize (< span class = "keywordtype" > int< / span > *perm)< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   {< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   < span class = "keywordtype" > double< / span > cost = < a class = "code" href = "structfaiss_1_1SimulatedAnnealingOptimizer.html#aa8ff19f97482c6213b2a8ff3b190412b" > init_cost< / a > = obj-> compute_cost (perm);< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < span class = "keywordtype" > int< / span > log2n = 0;< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "keywordflow" > while< / span > (!(n < = (1 < < log2n))) log2n++;< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < span class = "keywordtype" > double< / span > temperature = init_temperature;< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < span class = "keywordtype" > int< / span > n_swap = 0, n_hot = 0;< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > it = 0; it < n_iter; it++) {< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   temperature = temperature * temperature_decay;< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < span class = "keywordtype" > int< / span > iw, jw;< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "keywordflow" > if< / span > (only_bit_flips) {< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   iw = rnd-> < a class = "code" href = "structfaiss_1_1RandomGenerator.html#a583f124ecacdbe037ac96e23a44dd420" > rand_int< / a > (n);< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   jw = iw ^ (1 < < rnd-> < a class = "code" href = "structfaiss_1_1RandomGenerator.html#a583f124ecacdbe037ac96e23a44dd420" > rand_int< / a > (log2n));< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   iw = rnd-> < a class = "code" href = "structfaiss_1_1RandomGenerator.html#a583f124ecacdbe037ac96e23a44dd420" > rand_int< / a > (n);< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   jw = rnd-> < a class = "code" href = "structfaiss_1_1RandomGenerator.html#a583f124ecacdbe037ac96e23a44dd420" > rand_int< / a > (n - 1);< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "keywordflow" > if< / span > (jw == iw) jw++;< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   }< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   < span class = "keywordtype" > double< / span > delta_cost = obj-> cost_update (perm, iw, jw);< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < span class = "keywordflow" > if< / span > (delta_cost < 0 || rnd-> rand_float () < temperature) {< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   std::swap (perm[iw], perm[jw]);< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   cost += delta_cost;< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   n_swap++;< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < span class = "keywordflow" > if< / span > (delta_cost > = 0) n_hot++;< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   }< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   < span class = "keywordflow" > if< / span > (verbose > 2 || (verbose > 1 & & it % 10000 == 0)) {< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   printf (< span class = "stringliteral" > " iteration %d cost %g temp %g n_swap %d " < / span > < / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   < span class = "stringliteral" > " (%d hot) \r" < / span > ,< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   it, cost, temperature, n_swap, n_hot);< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   fflush(stdout);< / 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 >   < span class = "keywordflow" > if< / span > (logfile) {< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   fprintf (logfile, < span class = "stringliteral" > " %d %g %g %d %d\n" < / span > ,< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   it, cost, temperature, n_swap, n_hot);< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   }< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   }< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < span class = "keywordflow" > if< / span > (verbose > 1) printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   < span class = "keywordflow" > return< / span > cost;< / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   }< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < / div >
2017-02-23 06:26:44 +08:00
< 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 >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   < span class = "comment" > /****************************************************< / span > < / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   < span class = "comment" > * Cost functions: ReproduceDistanceTable< / span > < / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   < span class = "comment" > ****************************************************/< / span > < / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   < / div >
2017-02-23 06:26:44 +08:00
< 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 >   < / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   < span class = "keyword" > static< / span > < span class = "keyword" > inline< / span > < span class = "keywordtype" > int< / span > hamming_dis (uint64_t a, uint64_t b)< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   {< / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   < span class = "keywordflow" > return< / span > __builtin_popcountl (a ^ b);< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   }< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   < / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   < span class = "comment" > /// optimize permutation to reproduce a distance table with Hamming distances< / span > < / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   < span class = "comment" > < / span > < span class = "keyword" > struct < / span > ReproduceWithHammingObjective : PermutationObjective {< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < span class = "keywordtype" > int< / span > nbits;< / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < span class = "keywordtype" > double< / span > dis_weight_factor;< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   < span class = "keyword" > static< / span > < span class = "keywordtype" > double< / span > sqr (< span class = "keywordtype" > double< / span > x) { < span class = "keywordflow" > return< / span > x * x; }< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   < span class = "comment" > // weihgting of distances: it is more important to reproduce small< / span > < / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < span class = "comment" > // distances well< / span > < / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   < span class = "keywordtype" > double< / span > dis_weight (< span class = "keywordtype" > double< / span > x)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   < span class = "keywordflow" > return< / span > exp (-dis_weight_factor * x);< / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   }< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   < / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   std::vector< double> target_dis; < span class = "comment" > // wanted distances (size n^2)< / span > < / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   std::vector< double> weights; < span class = "comment" > // weights for each distance (size n^2)< / span > < / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   < / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < span class = "comment" > // cost = quadratic difference between actual distance and Hamming distance< / span > < / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   < span class = "keywordtype" > double< / span > compute_cost(< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > * perm)< span class = "keyword" > const override < / span > {< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < span class = "keywordtype" > double< / span > cost = 0;< / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < n; j++) {< / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   < span class = "keywordtype" > double< / span > wanted = target_dis[i * n + j];< / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   < span class = "keywordtype" > double< / span > w = weights[i * n + j];< / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   < span class = "keywordtype" > double< / span > actual = hamming_dis(perm[i], perm[j]);< / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   cost += w * sqr(wanted - actual);< / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   }< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   }< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   < span class = "keywordflow" > return< / span > cost;< / 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 >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   < span class = "comment" > // what would the cost update be if iw and jw were swapped?< / span > < / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   < span class = "comment" > // computed in O(n) instead of O(n^2) for the full re-computation< / span > < / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   < span class = "keywordtype" > double< / span > cost_update(< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > * perm, < span class = "keywordtype" > int< / span > iw, < span class = "keywordtype" > int< / span > jw)< span class = "keyword" > const override < / span > {< / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   < span class = "keywordtype" > double< / span > delta_cost = 0;< / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   < / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   < span class = "keywordflow" > if< / span > (i == iw) {< / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < n; j++) {< / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   < span class = "keywordtype" > double< / span > wanted = target_dis[i * n + j], w = weights[i * n + j];< / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   < span class = "keywordtype" > double< / span > actual = hamming_dis(perm[i], perm[j]);< / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   delta_cost -= w * sqr(wanted - actual);< / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   < span class = "keywordtype" > double< / span > new_actual =< / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   hamming_dis(perm[jw], perm[j == iw ? jw : j == jw ? iw : j]);< / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   delta_cost += w * sqr(wanted - new_actual);< / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   }< / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (i == jw) {< / div >
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < n; j++) {< / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   < span class = "keywordtype" > double< / span > wanted = target_dis[i * n + j], w = weights[i * n + j];< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   < span class = "keywordtype" > double< / span > actual = hamming_dis(perm[i], perm[j]);< / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   delta_cost -= w * sqr(wanted - actual);< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   < span class = "keywordtype" > double< / span > new_actual =< / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   hamming_dis(perm[iw], perm[j == iw ? jw : j == jw ? iw : j]);< / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   delta_cost += w * sqr(wanted - new_actual);< / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   }< / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   < span class = "keywordtype" > int< / span > j = iw;< / 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 >   < span class = "keywordtype" > double< / span > wanted = target_dis[i * n + j], w = weights[i * n + j];< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   < span class = "keywordtype" > double< / span > actual = hamming_dis(perm[i], perm[j]);< / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   delta_cost -= w * sqr(wanted - actual);< / div >
< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   < span class = "keywordtype" > double< / span > new_actual = hamming_dis(perm[i], perm[jw]);< / div >
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   delta_cost += w * sqr(wanted - new_actual);< / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   }< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   j = jw;< / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   {< / div >
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   < span class = "keywordtype" > double< / span > wanted = target_dis[i * n + j], w = weights[i * n + j];< / div >
< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > 246< / span >   < span class = "keywordtype" > double< / span > actual = hamming_dis(perm[i], perm[j]);< / div >
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   delta_cost -= w * sqr(wanted - actual);< / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   < span class = "keywordtype" > double< / span > new_actual = hamming_dis(perm[i], perm[iw]);< / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   delta_cost += w * sqr(wanted - new_actual);< / 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 >   < span class = "keywordflow" > return< / span > delta_cost;< / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   }< / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00258" > < / a > < span class = "lineno" > 258< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00259" > < / a > < span class = "lineno" > 259< / span >   ReproduceWithHammingObjective (< / div >
< div class = "line" > < a name = "l00260" > < / a > < span class = "lineno" > 260< / span >   < span class = "keywordtype" > int< / span > nbits,< / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   < span class = "keyword" > const< / span > std::vector< double> & dis_table,< / div >
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   < span class = "keywordtype" > double< / span > dis_weight_factor):< / div >
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   nbits (nbits), dis_weight_factor (dis_weight_factor)< / 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 >   n = 1 < < nbits;< / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   FAISS_THROW_IF_NOT (dis_table.size() == n * n);< / div >
< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   set_affine_target_dis (dis_table);< / div >
< div class = "line" > < a name = "l00268" > < / a > < span class = "lineno" > 268< / span >   }< / div >
< div class = "line" > < a name = "l00269" > < / a > < span class = "lineno" > 269< / span >   < / div >
< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   < span class = "keywordtype" > void< / span > set_affine_target_dis (< span class = "keyword" > const< / span > std::vector< double> & dis_table)< / div >
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   {< / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   < span class = "keywordtype" > double< / span > sum = 0, sum2 = 0;< / div >
< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   < span class = "keywordtype" > int< / span > n2 = n * n;< / div >
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n2; i++) {< / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   sum += dis_table [i];< / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   sum2 += dis_table [i] * dis_table [i];< / div >
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   }< / div >
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   < span class = "keywordtype" > double< / span > mean = sum / n2;< / div >
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   < span class = "keywordtype" > double< / span > stddev = sqrt(sum2 / n2 - (sum / n2) * (sum / n2));< / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   < / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   target_dis.resize (n2);< / div >
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   < / div >
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n2; i++) {< / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   < span class = "comment" > // the mapping function< / span > < / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   < span class = "keywordtype" > double< / span > td = (dis_table [i] - mean) / stddev * sqrt(nbits / 4) +< / div >
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   nbits / 2;< / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   target_dis[i] = td;< / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   < span class = "comment" > // compute a weight< / span > < / div >
< div class = "line" > < a name = "l00289" > < / a > < span class = "lineno" > 289< / span >   weights.push_back (dis_weight (td));< / 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 >   < / div >
< div class = "line" > < a name = "l00292" > < / a > < span class = "lineno" > 292< / span >   }< / div >
< div class = "line" > < a name = "l00293" > < / a > < span class = "lineno" > 293< / span >   < / div >
< div class = "line" > < a name = "l00294" > < / a > < span class = "lineno" > 294< / span >   ~ReproduceWithHammingObjective()< span class = "keyword" > override < / 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 = "comment" > // anonymous namespace< / span > < / div >
< div class = "line" > < a name = "l00298" > < / a > < span class = "lineno" > 298< / span >   < / div >
< div class = "line" > < a name = "l00299" > < / a > < span class = "lineno" > 299< / span >   < span class = "comment" > // weihgting of distances: it is more important to reproduce small< / span > < / div >
< div class = "line" > < a name = "l00300" > < / a > < span class = "lineno" > 300< / span >   < span class = "comment" > // distances well< / span > < / div >
< div class = "line" > < a name = "l00301" > < / a > < span class = "lineno" > 301< / span >   < span class = "keywordtype" > double< / span > ReproduceDistancesObjective::dis_weight (< span class = "keywordtype" > double< / span > x)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00302" > < / a > < span class = "lineno" > 302< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00303" > < / a > < span class = "lineno" > 303< / span >   < span class = "keywordflow" > return< / span > exp (-dis_weight_factor * x);< / div >
< div class = "line" > < a name = "l00304" > < / a > < span class = "lineno" > 304< / span >   }< / div >
< div class = "line" > < a name = "l00305" > < / a > < span class = "lineno" > 305< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00306" > < / a > < span class = "lineno" > 306< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00307" > < / a > < span class = "lineno" > 307< / span >   < span class = "keywordtype" > double< / span > ReproduceDistancesObjective::get_source_dis (< span class = "keywordtype" > int< / span > i, < span class = "keywordtype" > int< / span > j)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00308" > < / a > < span class = "lineno" > 308< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00309" > < / a > < span class = "lineno" > 309< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#a6681846eb7751b32a907d075fff6770b" > source_dis< / a > [i * n + j];< / div >
< div class = "line" > < a name = "l00310" > < / a > < span class = "lineno" > 310< / span >   }< / div >
< div class = "line" > < a name = "l00311" > < / a > < span class = "lineno" > 311< / span >   < / div >
< div class = "line" > < a name = "l00312" > < / a > < span class = "lineno" > 312< / span >   < span class = "comment" > // cost = quadratic difference between actual distance and Hamming distance< / span > < / div >
< div class = "line" > < a name = "l00313" > < / a > < span class = "lineno" > 313< / span >   < span class = "keywordtype" > double< / span > ReproduceDistancesObjective::compute_cost (< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > *perm)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00314" > < / a > < span class = "lineno" > 314< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00315" > < / a > < span class = "lineno" > 315< / span >   < span class = "keywordtype" > double< / span > cost = 0;< / div >
< div class = "line" > < a name = "l00316" > < / a > < span class = "lineno" > 316< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00317" > < / a > < span class = "lineno" > 317< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < n; j++) {< / div >
< div class = "line" > < a name = "l00318" > < / a > < span class = "lineno" > 318< / span >   < span class = "keywordtype" > double< / span > wanted = < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#ac99d739f81e13e841ba7d81d90629aef" > target_dis< / a > [i * n + j];< / div >
< div class = "line" > < a name = "l00319" > < / a > < span class = "lineno" > 319< / span >   < span class = "keywordtype" > double< / span > w = < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#a982332b44ff32b9ae9694e374acd0aff" > weights< / a > [i * n + j];< / div >
< div class = "line" > < a name = "l00320" > < / a > < span class = "lineno" > 320< / span >   < span class = "keywordtype" > double< / span > actual = get_source_dis (perm[i], perm[j]);< / div >
< div class = "line" > < a name = "l00321" > < / a > < span class = "lineno" > 321< / span >   cost += w * sqr (wanted - actual);< / 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 >   < span class = "keywordflow" > return< / span > cost;< / div >
< div class = "line" > < a name = "l00325" > < / a > < span class = "lineno" > 325< / span >   }< / div >
< div class = "line" > < a name = "l00326" > < / a > < span class = "lineno" > 326< / span >   < / div >
< div class = "line" > < a name = "l00327" > < / a > < span class = "lineno" > 327< / span >   < span class = "comment" > // what would the cost update be if iw and jw were swapped?< / span > < / div >
< div class = "line" > < a name = "l00328" > < / a > < span class = "lineno" > 328< / span >   < span class = "comment" > // computed in O(n) instead of O(n^2) for the full re-computation< / span > < / div >
< div class = "line" > < a name = "l00329" > < / a > < span class = "lineno" > 329< / span >   < span class = "keywordtype" > double< / span > ReproduceDistancesObjective::cost_update(< / div >
< div class = "line" > < a name = "l00330" > < / a > < span class = "lineno" > 330< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > *perm, < span class = "keywordtype" > int< / span > iw, < span class = "keywordtype" > int< / span > jw)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00331" > < / a > < span class = "lineno" > 331< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00332" > < / a > < span class = "lineno" > 332< / span >   < span class = "keywordtype" > double< / span > delta_cost = 0;< / div >
< div class = "line" > < a name = "l00333" > < / a > < span class = "lineno" > 333< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++) {< / div >
< div class = "line" > < a name = "l00334" > < / a > < span class = "lineno" > 334< / span >   < span class = "keywordflow" > if< / span > (i == iw) {< / div >
< div class = "line" > < a name = "l00335" > < / a > < span class = "lineno" > 335< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < n; j++) {< / div >
< div class = "line" > < a name = "l00336" > < / a > < span class = "lineno" > 336< / span >   < span class = "keywordtype" > double< / span > wanted = < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#ac99d739f81e13e841ba7d81d90629aef" > target_dis< / a > [i * n + j],< / div >
< div class = "line" > < a name = "l00337" > < / a > < span class = "lineno" > 337< / span >   w = < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#a982332b44ff32b9ae9694e374acd0aff" > weights< / a > [i * n + j];< / div >
< div class = "line" > < a name = "l00338" > < / a > < span class = "lineno" > 338< / span >   < span class = "keywordtype" > double< / span > actual = get_source_dis (perm[i], perm[j]);< / div >
< div class = "line" > < a name = "l00339" > < / a > < span class = "lineno" > 339< / span >   delta_cost -= w * sqr (wanted - actual);< / div >
< div class = "line" > < a name = "l00340" > < / a > < span class = "lineno" > 340< / span >   < span class = "keywordtype" > double< / span > new_actual = get_source_dis (< / div >
< div class = "line" > < a name = "l00341" > < / a > < span class = "lineno" > 341< / span >   perm[jw],< / div >
< div class = "line" > < a name = "l00342" > < / a > < span class = "lineno" > 342< / span >   perm[j == iw ? jw : j == jw ? iw : j]);< / div >
< div class = "line" > < a name = "l00343" > < / a > < span class = "lineno" > 343< / span >   delta_cost += w * sqr (wanted - new_actual);< / div >
< div class = "line" > < a name = "l00344" > < / a > < span class = "lineno" > 344< / span >   }< / div >
< div class = "line" > < a name = "l00345" > < / a > < span class = "lineno" > 345< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (i == jw) {< / div >
< div class = "line" > < a name = "l00346" > < / a > < span class = "lineno" > 346< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < n; j++) {< / div >
< div class = "line" > < a name = "l00347" > < / a > < span class = "lineno" > 347< / span >   < span class = "keywordtype" > double< / span > wanted = < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#ac99d739f81e13e841ba7d81d90629aef" > target_dis< / a > [i * n + j],< / div >
< div class = "line" > < a name = "l00348" > < / a > < span class = "lineno" > 348< / span >   w = < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#a982332b44ff32b9ae9694e374acd0aff" > weights< / a > [i * n + j];< / div >
< div class = "line" > < a name = "l00349" > < / a > < span class = "lineno" > 349< / span >   < span class = "keywordtype" > double< / span > actual = get_source_dis (perm[i], perm[j]);< / div >
< div class = "line" > < a name = "l00350" > < / a > < span class = "lineno" > 350< / span >   delta_cost -= w * sqr (wanted - actual);< / div >
< div class = "line" > < a name = "l00351" > < / a > < span class = "lineno" > 351< / span >   < span class = "keywordtype" > double< / span > new_actual = get_source_dis (< / div >
< div class = "line" > < a name = "l00352" > < / a > < span class = "lineno" > 352< / span >   perm[iw],< / div >
< div class = "line" > < a name = "l00353" > < / a > < span class = "lineno" > 353< / span >   perm[j == iw ? jw : j == jw ? iw : j]);< / div >
< div class = "line" > < a name = "l00354" > < / a > < span class = "lineno" > 354< / span >   delta_cost += w * sqr (wanted - new_actual);< / div >
< div class = "line" > < a name = "l00355" > < / a > < span class = "lineno" > 355< / span >   }< / div >
< div class = "line" > < a name = "l00356" > < / a > < span class = "lineno" > 356< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00357" > < / a > < span class = "lineno" > 357< / span >   < span class = "keywordtype" > int< / span > j = iw;< / div >
< div class = "line" > < a name = "l00358" > < / a > < span class = "lineno" > 358< / span >   {< / div >
< div class = "line" > < a name = "l00359" > < / a > < span class = "lineno" > 359< / span >   < span class = "keywordtype" > double< / span > wanted = < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#ac99d739f81e13e841ba7d81d90629aef" > target_dis< / a > [i * n + j],< / div >
< div class = "line" > < a name = "l00360" > < / a > < span class = "lineno" > 360< / span >   w = < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#a982332b44ff32b9ae9694e374acd0aff" > weights< / a > [i * n + j];< / div >
< div class = "line" > < a name = "l00361" > < / a > < span class = "lineno" > 361< / span >   < span class = "keywordtype" > double< / span > actual = get_source_dis (perm[i], perm[j]);< / div >
< div class = "line" > < a name = "l00362" > < / a > < span class = "lineno" > 362< / span >   delta_cost -= w * sqr (wanted - actual);< / div >
< div class = "line" > < a name = "l00363" > < / a > < span class = "lineno" > 363< / span >   < span class = "keywordtype" > double< / span > new_actual = get_source_dis (perm[i], perm[jw]);< / div >
< div class = "line" > < a name = "l00364" > < / a > < span class = "lineno" > 364< / span >   delta_cost += w * sqr (wanted - new_actual);< / 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 >   j = jw;< / div >
< div class = "line" > < a name = "l00367" > < / a > < span class = "lineno" > 367< / span >   {< / div >
< div class = "line" > < a name = "l00368" > < / a > < span class = "lineno" > 368< / span >   < span class = "keywordtype" > double< / span > wanted = < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#ac99d739f81e13e841ba7d81d90629aef" > target_dis< / a > [i * n + j],< / div >
< div class = "line" > < a name = "l00369" > < / a > < span class = "lineno" > 369< / span >   w = < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#a982332b44ff32b9ae9694e374acd0aff" > weights< / a > [i * n + j];< / div >
< div class = "line" > < a name = "l00370" > < / a > < span class = "lineno" > 370< / span >   < span class = "keywordtype" > double< / span > actual = get_source_dis (perm[i], perm[j]);< / div >
< div class = "line" > < a name = "l00371" > < / a > < span class = "lineno" > 371< / span >   delta_cost -= w * sqr (wanted - actual);< / div >
< div class = "line" > < a name = "l00372" > < / a > < span class = "lineno" > 372< / span >   < span class = "keywordtype" > double< / span > new_actual = get_source_dis (perm[i], perm[iw]);< / div >
< div class = "line" > < a name = "l00373" > < / a > < span class = "lineno" > 373< / span >   delta_cost += w * sqr (wanted - new_actual);< / div >
< div class = "line" > < a name = "l00374" > < / a > < span class = "lineno" > 374< / span >   }< / 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 >   }< / div >
< div class = "line" > < a name = "l00377" > < / a > < span class = "lineno" > 377< / span >   < span class = "keywordflow" > return< / span > delta_cost;< / div >
< div class = "line" > < a name = "l00378" > < / a > < span class = "lineno" > 378< / span >   }< / div >
< div class = "line" > < a name = "l00379" > < / a > < span class = "lineno" > 379< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00380" > < / a > < span class = "lineno" > 380< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00381" > < / a > < span class = "lineno" > 381< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00382" > < / a > < span class = "lineno" > 382< / span >   ReproduceDistancesObjective::ReproduceDistancesObjective (< / div >
< div class = "line" > < a name = "l00383" > < / a > < span class = "lineno" > 383< / span >   < span class = "keywordtype" > int< / span > n,< / div >
< div class = "line" > < a name = "l00384" > < / a > < span class = "lineno" > 384< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > *source_dis_in,< / div >
< div class = "line" > < a name = "l00385" > < / a > < span class = "lineno" > 385< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > *target_dis_in,< / div >
< div class = "line" > < a name = "l00386" > < / a > < span class = "lineno" > 386< / span >   < span class = "keywordtype" > double< / span > dis_weight_factor):< / div >
< div class = "line" > < a name = "l00387" > < / a > < span class = "lineno" > 387< / span >   dis_weight_factor (dis_weight_factor),< / div >
< div class = "line" > < a name = "l00388" > < / a > < span class = "lineno" > 388< / span >   target_dis (target_dis_in)< / div >
< div class = "line" > < a name = "l00389" > < / a > < span class = "lineno" > 389< / span >   {< / div >
< div class = "line" > < a name = "l00390" > < / a > < span class = "lineno" > 390< / span >   this-> n = < a class = "code" href = "structfaiss_1_1SimulatedAnnealingOptimizer.html#a90edfc401372aa1a2a832b403e26bfd1" > n< / a > ;< / div >
< div class = "line" > < a name = "l00391" > < / a > < span class = "lineno" > 391< / span >   set_affine_target_dis (source_dis_in);< / div >
< div class = "line" > < a name = "l00392" > < / a > < span class = "lineno" > 392< / span >   }< / div >
< div class = "line" > < a name = "l00393" > < / a > < span class = "lineno" > 393< / span >   < / div >
< div class = "line" > < a name = "l00394" > < / a > < span class = "lineno" > 394< / span >   < span class = "keywordtype" > void< / span > ReproduceDistancesObjective::compute_mean_stdev (< / div >
< div class = "line" > < a name = "l00395" > < / a > < span class = "lineno" > 395< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > *tab, < span class = "keywordtype" > size_t< / span > n2,< / div >
< div class = "line" > < a name = "l00396" > < / a > < span class = "lineno" > 396< / span >   < span class = "keywordtype" > double< / span > *mean_out, < span class = "keywordtype" > double< / span > *stddev_out)< / div >
< div class = "line" > < a name = "l00397" > < / a > < span class = "lineno" > 397< / span >   {< / div >
< div class = "line" > < a name = "l00398" > < / a > < span class = "lineno" > 398< / span >   < span class = "keywordtype" > double< / span > sum = 0, sum2 = 0;< / div >
< div class = "line" > < a name = "l00399" > < / a > < span class = "lineno" > 399< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n2; i++) {< / div >
< div class = "line" > < a name = "l00400" > < / a > < span class = "lineno" > 400< / span >   sum += tab [i];< / div >
< div class = "line" > < a name = "l00401" > < / a > < span class = "lineno" > 401< / span >   sum2 += tab [i] * tab [i];< / div >
< div class = "line" > < a name = "l00402" > < / a > < span class = "lineno" > 402< / span >   }< / div >
< div class = "line" > < a name = "l00403" > < / a > < span class = "lineno" > 403< / span >   < span class = "keywordtype" > double< / span > mean = sum / n2;< / div >
< div class = "line" > < a name = "l00404" > < / a > < span class = "lineno" > 404< / span >   < span class = "keywordtype" > double< / span > stddev = sqrt(sum2 / n2 - (sum / n2) * (sum / n2));< / div >
< div class = "line" > < a name = "l00405" > < / a > < span class = "lineno" > 405< / span >   *mean_out = mean;< / div >
< div class = "line" > < a name = "l00406" > < / a > < span class = "lineno" > 406< / span >   *stddev_out = stddev;< / 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 >   < span class = "keywordtype" > void< / span > ReproduceDistancesObjective::set_affine_target_dis (< / div >
< div class = "line" > < a name = "l00410" > < / a > < span class = "lineno" > 410< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > *source_dis_in)< / div >
< 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 >   < span class = "keywordtype" > int< / span > n2 = n * n;< / div >
< div class = "line" > < a name = "l00413" > < / a > < span class = "lineno" > 413< / span >   < / div >
< div class = "line" > < a name = "l00414" > < / a > < span class = "lineno" > 414< / span >   < span class = "keywordtype" > double< / span > mean_src, stddev_src;< / div >
< div class = "line" > < a name = "l00415" > < / a > < span class = "lineno" > 415< / span >   compute_mean_stdev (source_dis_in, n2, & mean_src, & stddev_src);< / div >
< div class = "line" > < a name = "l00416" > < / a > < span class = "lineno" > 416< / span >   < / div >
< div class = "line" > < a name = "l00417" > < / a > < span class = "lineno" > 417< / span >   < span class = "keywordtype" > double< / span > mean_target, stddev_target;< / div >
< div class = "line" > < a name = "l00418" > < / a > < span class = "lineno" > 418< / span >   compute_mean_stdev (< a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#ac99d739f81e13e841ba7d81d90629aef" > target_dis< / a > , n2, & mean_target, & stddev_target);< / div >
< div class = "line" > < a name = "l00419" > < / a > < span class = "lineno" > 419< / span >   < / div >
< div class = "line" > < a name = "l00420" > < / a > < span class = "lineno" > 420< / span >   printf (< span class = "stringliteral" > " map mean %g std %g -> mean %g std %g\n" < / span > ,< / div >
< div class = "line" > < a name = "l00421" > < / a > < span class = "lineno" > 421< / span >   mean_src, stddev_src, mean_target, stddev_target);< / div >
< div class = "line" > < a name = "l00422" > < / a > < span class = "lineno" > 422< / span >   < / div >
< div class = "line" > < a name = "l00423" > < / a > < span class = "lineno" > 423< / span >   < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#a6681846eb7751b32a907d075fff6770b" > source_dis< / a > .resize (n2);< / div >
< div class = "line" > < a name = "l00424" > < / a > < span class = "lineno" > 424< / span >   < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#a982332b44ff32b9ae9694e374acd0aff" > weights< / a > .resize (n2);< / div >
< div class = "line" > < a name = "l00425" > < / a > < span class = "lineno" > 425< / span >   < / div >
< div class = "line" > < a name = "l00426" > < / a > < span class = "lineno" > 426< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n2; i++) {< / div >
< div class = "line" > < a name = "l00427" > < / a > < span class = "lineno" > 427< / span >   < span class = "comment" > // the mapping function< / span > < / div >
< div class = "line" > < a name = "l00428" > < / a > < span class = "lineno" > 428< / span >   < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#a6681846eb7751b32a907d075fff6770b" > source_dis< / a > [i] = (source_dis_in[i] - mean_src) / stddev_src< / div >
< div class = "line" > < a name = "l00429" > < / a > < span class = "lineno" > 429< / span >   * stddev_target + mean_target;< / div >
< div class = "line" > < a name = "l00430" > < / a > < span class = "lineno" > 430< / span >   < / div >
< div class = "line" > < a name = "l00431" > < / a > < span class = "lineno" > 431< / span >   < span class = "comment" > // compute a weight< / span > < / div >
< div class = "line" > < a name = "l00432" > < / a > < span class = "lineno" > 432< / span >   < a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#a982332b44ff32b9ae9694e374acd0aff" > weights< / a > [i] = dis_weight (< a class = "code" href = "structfaiss_1_1ReproduceDistancesObjective.html#ac99d739f81e13e841ba7d81d90629aef" > target_dis< / a > [i]);< / div >
< div class = "line" > < a name = "l00433" > < / a > < span class = "lineno" > 433< / span >   }< / div >
< div class = "line" > < a name = "l00434" > < / a > < span class = "lineno" > 434< / span >   < / div >
< div class = "line" > < a name = "l00435" > < / a > < span class = "lineno" > 435< / span >   }< / div >
< div class = "line" > < a name = "l00436" > < / a > < span class = "lineno" > 436< / span >   < / div >
< div class = "line" > < a name = "l00437" > < / a > < span class = "lineno" > 437< / span >   < span class = "comment" > /****************************************************< / span > < / div >
< div class = "line" > < a name = "l00438" > < / a > < span class = "lineno" > 438< / span >   < span class = "comment" > * Cost functions: RankingScore< / span > < / div >
< div class = "line" > < a name = "l00439" > < / a > < span class = "lineno" > 439< / span >   < span class = "comment" > ****************************************************/< / span > < / div >
< div class = "line" > < a name = "l00440" > < / a > < span class = "lineno" > 440< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00441" > < / a > < span class = "lineno" > 441< / span >   < span class = "comment" > /// Maintains a 3D table of elementary costs.< / span > < / div >
< div class = "line" > < a name = "l00442" > < / a > < span class = "lineno" > 442< / span >   < span class = "comment" > /// Accumulates elements based on Hamming distance comparisons< / span > < / div >
< div class = "line" > < a name = "l00443" > < / a > < span class = "lineno" > 443< / span >   < span class = "comment" > < / span > < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Ttab, < span class = "keyword" > typename< / span > Taccu> < / div >
< div class = "line" > < a name = "l00444" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1Score3Computer.html" > 444< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1Score3Computer.html" > Score3Computer< / a > : < a class = "code" href = "structfaiss_1_1PermutationObjective.html" > PermutationObjective< / a > {< / div >
< div class = "line" > < a name = "l00445" > < / a > < span class = "lineno" > 445< / span >   < / div >
< div class = "line" > < a name = "l00446" > < / a > < span class = "lineno" > 446< / span >   < span class = "keywordtype" > int< / span > nc;< / div >
< div class = "line" > < a name = "l00447" > < / a > < span class = "lineno" > 447< / span >   < / div >
< div class = "line" > < a name = "l00448" > < / a > < span class = "lineno" > 448< / span >   < span class = "comment" > // cost matrix of size nc * nc *nc< / span > < / div >
< div class = "line" > < a name = "l00449" > < / a > < span class = "lineno" > 449< / span >   < span class = "comment" > // n_gt (i,j,k) = count of d_gt(x, y-) < d_gt(x, y+)< / span > < / div >
< div class = "line" > < a name = "l00450" > < / a > < span class = "lineno" > 450< / span >   < span class = "comment" > // where x has PQ code i, y- PQ code j and y+ PQ code k< / span > < / div >
< div class = "line" > < a name = "l00451" > < / a > < span class = "lineno" > 451< / span >   std::vector< Ttab> n_gt;< / div >
< div class = "line" > < a name = "l00452" > < / a > < span class = "lineno" > 452< / span >   < / div >
< div class = "line" > < a name = "l00453" > < / a > < span class = "lineno" > 453< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00454" > < / a > < span class = "lineno" > 454< / span >   < span class = "comment" > /// the cost is a triple loop on the nc * nc * nc matrix of entries.< / span > < / div >
< div class = "line" > < a name = "l00455" > < / a > < span class = "lineno" > 455< / span >   < span class = "comment" > ///< / span > < / div >
< div class = "line" > < a name = "l00456" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1Score3Computer.html#a07a726903418960a2d8000506d88f8e6" > 456< / a > < / span >   < span class = "comment" > < / span > Taccu < a class = "code" href = "structfaiss_1_1Score3Computer.html#a07a726903418960a2d8000506d88f8e6" > compute< / a > (< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > * perm)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00457" > < / a > < span class = "lineno" > 457< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00458" > < / a > < span class = "lineno" > 458< / span >   Taccu accu = 0;< / div >
< div class = "line" > < a name = "l00459" > < / a > < span class = "lineno" > 459< / span >   < span class = "keyword" > const< / span > Ttab *p = n_gt.data();< / div >
< div class = "line" > < a name = "l00460" > < / a > < span class = "lineno" > 460< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < nc; i++) {< / div >
< div class = "line" > < a name = "l00461" > < / a > < span class = "lineno" > 461< / span >   < span class = "keywordtype" > int< / span > ip = perm [i];< / div >
< div class = "line" > < a name = "l00462" > < / a > < span class = "lineno" > 462< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < nc; j++) {< / div >
< div class = "line" > < a name = "l00463" > < / a > < span class = "lineno" > 463< / span >   < span class = "keywordtype" > int< / span > jp = perm [j];< / div >
< div class = "line" > < a name = "l00464" > < / a > < span class = "lineno" > 464< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > k = 0; k < nc; k++) {< / div >
< div class = "line" > < a name = "l00465" > < / a > < span class = "lineno" > 465< / span >   < span class = "keywordtype" > int< / span > kp = perm [k];< / div >
< div class = "line" > < a name = "l00466" > < / a > < span class = "lineno" > 466< / span >   < span class = "keywordflow" > if< / span > (hamming_dis (ip, jp) < < / div >
< div class = "line" > < a name = "l00467" > < / a > < span class = "lineno" > 467< / span >   hamming_dis (ip, kp)) {< / div >
< div class = "line" > < a name = "l00468" > < / a > < span class = "lineno" > 468< / span >   accu += *p; < span class = "comment" > // n_gt [ ( i * nc + j) * nc + k];< / span > < / 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 >   p++;< / div >
< div class = "line" > < a name = "l00471" > < / a > < span class = "lineno" > 471< / span >   }< / div >
< div class = "line" > < a name = "l00472" > < / a > < span class = "lineno" > 472< / span >   }< / div >
< div class = "line" > < a name = "l00473" > < / a > < span class = "lineno" > 473< / span >   }< / div >
< div class = "line" > < a name = "l00474" > < / a > < span class = "lineno" > 474< / span >   < span class = "keywordflow" > return< / span > accu;< / div >
< div class = "line" > < a name = "l00475" > < / a > < span class = "lineno" > 475< / 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 >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00478" > < / a > < span class = "lineno" > 478< / span >   < span class = "comment" > /** cost update if entries iw and jw of the permutation would be< / span > < / div >
< div class = "line" > < a name = "l00479" > < / a > < span class = "lineno" > 479< / span >   < span class = "comment" > * swapped.< / span > < / div >
< div class = "line" > < a name = "l00480" > < / a > < span class = "lineno" > 480< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00481" > < / a > < span class = "lineno" > 481< / span >   < span class = "comment" > * The computation is optimized by avoiding elements in the< / span > < / div >
< div class = "line" > < a name = "l00482" > < / a > < span class = "lineno" > 482< / span >   < span class = "comment" > * nc*nc*nc cube that are known not to change. For nc=256, this< / span > < / div >
< div class = "line" > < a name = "l00483" > < / a > < span class = "lineno" > 483< / span >   < span class = "comment" > * reduces the nb of cells to visit to about 6/256 th of the< / span > < / div >
< div class = "line" > < a name = "l00484" > < / a > < span class = "lineno" > 484< / span >   < span class = "comment" > * cells. Practical speedup is about 8x, and the code is quite< / span > < / div >
< div class = "line" > < a name = "l00485" > < / a > < span class = "lineno" > 485< / span >   < span class = "comment" > * complex :-/< / span > < / div >
< div class = "line" > < a name = "l00486" > < / a > < span class = "lineno" > 486< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00487" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1Score3Computer.html#a567feac7ddd3bb467a9ed30671caccb1" > 487< / a > < / span >   Taccu < a class = "code" href = "structfaiss_1_1Score3Computer.html#a567feac7ddd3bb467a9ed30671caccb1" > compute_update< / a > (< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > *perm, < span class = "keywordtype" > int< / span > iw, < span class = "keywordtype" > int< / span > jw)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00488" > < / a > < span class = "lineno" > 488< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00489" > < / a > < span class = "lineno" > 489< / span >   assert (iw != jw);< / div >
< div class = "line" > < a name = "l00490" > < / a > < span class = "lineno" > 490< / span >   < span class = "keywordflow" > if< / span > (iw > jw) std::swap (iw, jw);< / div >
< div class = "line" > < a name = "l00491" > < / a > < span class = "lineno" > 491< / span >   < / div >
< div class = "line" > < a name = "l00492" > < / a > < span class = "lineno" > 492< / span >   Taccu accu = 0;< / div >
< div class = "line" > < a name = "l00493" > < / a > < span class = "lineno" > 493< / span >   < span class = "keyword" > const< / span > Ttab * n_gt_i = n_gt.data();< / div >
< div class = "line" > < a name = "l00494" > < / a > < span class = "lineno" > 494< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < nc; i++) {< / div >
< div class = "line" > < a name = "l00495" > < / a > < span class = "lineno" > 495< / span >   < span class = "keywordtype" > int< / span > ip0 = perm [i];< / div >
< div class = "line" > < a name = "l00496" > < / a > < span class = "lineno" > 496< / span >   < span class = "keywordtype" > int< / span > ip = perm [i == iw ? jw : i == jw ? iw : i];< / div >
< div class = "line" > < a name = "l00497" > < / a > < span class = "lineno" > 497< / span >   < / div >
< div class = "line" > < a name = "l00498" > < / a > < span class = "lineno" > 498< / span >   < span class = "comment" > //accu += update_i (perm, iw, jw, ip0, ip, n_gt_i);< / span > < / div >
< div class = "line" > < a name = "l00499" > < / a > < span class = "lineno" > 499< / span >   < / div >
< div class = "line" > < a name = "l00500" > < / a > < span class = "lineno" > 500< / span >   accu += < a class = "code" href = "structfaiss_1_1Score3Computer.html#acf371848bac76ba275ceb5e10f805d33" > update_i_cross< / a > (perm, iw, jw,< / div >
< div class = "line" > < a name = "l00501" > < / a > < span class = "lineno" > 501< / span >   ip0, ip, n_gt_i);< / div >
< div class = "line" > < a name = "l00502" > < / a > < span class = "lineno" > 502< / span >   < / div >
< div class = "line" > < a name = "l00503" > < / a > < span class = "lineno" > 503< / span >   < span class = "keywordflow" > if< / span > (ip != ip0)< / div >
< div class = "line" > < a name = "l00504" > < / a > < span class = "lineno" > 504< / span >   accu += update_i_plane (perm, iw, jw,< / div >
< div class = "line" > < a name = "l00505" > < / a > < span class = "lineno" > 505< / span >   ip0, ip, n_gt_i);< / 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 >   n_gt_i += nc * nc;< / 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 >   < span class = "keywordflow" > return< / span > accu;< / 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 >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00513" > < / a > < span class = "lineno" > 513< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00514" > < / a > < span class = "lineno" > 514< / span >   Taccu update_i (< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > *perm, < span class = "keywordtype" > int< / span > iw, < span class = "keywordtype" > int< / span > jw,< / div >
< div class = "line" > < a name = "l00515" > < / a > < span class = "lineno" > 515< / span >   < span class = "keywordtype" > int< / span > ip0, < span class = "keywordtype" > int< / span > ip, < span class = "keyword" > const< / span > Ttab * n_gt_i)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00516" > < / a > < span class = "lineno" > 516< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00517" > < / a > < span class = "lineno" > 517< / span >   Taccu accu = 0;< / div >
< div class = "line" > < a name = "l00518" > < / a > < span class = "lineno" > 518< / span >   < span class = "keyword" > const< / span > Ttab *n_gt_ij = n_gt_i;< / div >
< div class = "line" > < a name = "l00519" > < / a > < span class = "lineno" > 519< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < nc; j++) {< / div >
< div class = "line" > < a name = "l00520" > < / a > < span class = "lineno" > 520< / span >   < span class = "keywordtype" > int< / span > jp0 = perm[j];< / div >
< div class = "line" > < a name = "l00521" > < / a > < span class = "lineno" > 521< / span >   < span class = "keywordtype" > int< / span > jp = perm [j == iw ? jw : j == jw ? iw : j];< / div >
< div class = "line" > < a name = "l00522" > < / a > < span class = "lineno" > 522< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > k = 0; k < nc; k++) {< / div >
< div class = "line" > < a name = "l00523" > < / a > < span class = "lineno" > 523< / span >   < span class = "keywordtype" > int< / span > kp0 = perm [k];< / div >
< div class = "line" > < a name = "l00524" > < / a > < span class = "lineno" > 524< / span >   < span class = "keywordtype" > int< / span > kp = perm [k == iw ? jw : k == jw ? iw : k];< / div >
< div class = "line" > < a name = "l00525" > < / a > < span class = "lineno" > 525< / span >   < span class = "keywordtype" > int< / span > ng = n_gt_ij [k];< / div >
< div class = "line" > < a name = "l00526" > < / a > < span class = "lineno" > 526< / span >   < span class = "keywordflow" > if< / span > (hamming_dis (ip, jp) < hamming_dis (ip, kp)) {< / div >
< div class = "line" > < a name = "l00527" > < / a > < span class = "lineno" > 527< / span >   accu += ng;< / 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 = "keywordflow" > if< / span > (hamming_dis (ip0, jp0) < hamming_dis (ip0, kp0)) {< / div >
< div class = "line" > < a name = "l00530" > < / a > < span class = "lineno" > 530< / span >   accu -= ng;< / div >
< div class = "line" > < a name = "l00531" > < / a > < span class = "lineno" > 531< / 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 >   n_gt_ij += nc;< / div >
< div class = "line" > < a name = "l00534" > < / a > < span class = "lineno" > 534< / span >   }< / div >
< div class = "line" > < a name = "l00535" > < / a > < span class = "lineno" > 535< / span >   < span class = "keywordflow" > return< / span > accu;< / div >
< div class = "line" > < a name = "l00536" > < / a > < span class = "lineno" > 536< / span >   }< / div >
< div class = "line" > < a name = "l00537" > < / a > < span class = "lineno" > 537< / span >   < / div >
< div class = "line" > < a name = "l00538" > < / a > < span class = "lineno" > 538< / span >   < span class = "comment" > // 2 inner loops for the case ip0 != ip< / span > < / div >
< div class = "line" > < a name = "l00539" > < / a > < span class = "lineno" > 539< / span >   Taccu update_i_plane (< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > *perm, < span class = "keywordtype" > int< / span > iw, < span class = "keywordtype" > int< / span > jw,< / div >
< div class = "line" > < a name = "l00540" > < / a > < span class = "lineno" > 540< / span >   < span class = "keywordtype" > int< / span > ip0, < span class = "keywordtype" > int< / span > ip, < span class = "keyword" > const< / span > Ttab * n_gt_i)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00541" > < / a > < span class = "lineno" > 541< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00542" > < / a > < span class = "lineno" > 542< / span >   Taccu accu = 0;< / div >
< div class = "line" > < a name = "l00543" > < / a > < span class = "lineno" > 543< / span >   < span class = "keyword" > const< / span > Ttab *n_gt_ij = n_gt_i;< / div >
< div class = "line" > < a name = "l00544" > < / a > < span class = "lineno" > 544< / span >   < / div >
< div class = "line" > < a name = "l00545" > < / a > < span class = "lineno" > 545< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < nc; j++) {< / div >
< div class = "line" > < a name = "l00546" > < / a > < span class = "lineno" > 546< / span >   < span class = "keywordflow" > if< / span > (j != iw & & j != jw) {< / div >
< div class = "line" > < a name = "l00547" > < / a > < span class = "lineno" > 547< / span >   < span class = "keywordtype" > int< / span > jp = perm[j];< / div >
< div class = "line" > < a name = "l00548" > < / a > < span class = "lineno" > 548< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > k = 0; k < nc; k++) {< / div >
< div class = "line" > < a name = "l00549" > < / a > < span class = "lineno" > 549< / span >   < span class = "keywordflow" > if< / span > (k != iw & & k != jw) {< / div >
< div class = "line" > < a name = "l00550" > < / a > < span class = "lineno" > 550< / span >   < span class = "keywordtype" > int< / span > kp = perm [k];< / div >
< div class = "line" > < a name = "l00551" > < / a > < span class = "lineno" > 551< / span >   Ttab ng = n_gt_ij [k];< / div >
< div class = "line" > < a name = "l00552" > < / a > < span class = "lineno" > 552< / span >   < span class = "keywordflow" > if< / span > (hamming_dis (ip, jp) < hamming_dis (ip, kp)) {< / div >
< div class = "line" > < a name = "l00553" > < / a > < span class = "lineno" > 553< / span >   accu += ng;< / div >
< div class = "line" > < a name = "l00554" > < / a > < span class = "lineno" > 554< / span >   }< / div >
< div class = "line" > < a name = "l00555" > < / a > < span class = "lineno" > 555< / span >   < span class = "keywordflow" > if< / span > (hamming_dis (ip0, jp) < hamming_dis (ip0, kp)) {< / div >
< div class = "line" > < a name = "l00556" > < / a > < span class = "lineno" > 556< / span >   accu -= ng;< / div >
< div class = "line" > < a name = "l00557" > < / a > < span class = "lineno" > 557< / span >   }< / div >
< div class = "line" > < a name = "l00558" > < / a > < span class = "lineno" > 558< / span >   }< / div >
< div class = "line" > < a name = "l00559" > < / a > < span class = "lineno" > 559< / span >   }< / div >
< div class = "line" > < a name = "l00560" > < / a > < span class = "lineno" > 560< / span >   }< / div >
< div class = "line" > < a name = "l00561" > < / a > < span class = "lineno" > 561< / span >   n_gt_ij += nc;< / div >
< div class = "line" > < a name = "l00562" > < / a > < span class = "lineno" > 562< / span >   }< / div >
< div class = "line" > < a name = "l00563" > < / a > < span class = "lineno" > 563< / span >   < span class = "keywordflow" > return< / span > accu;< / div >
< div class = "line" > < a name = "l00564" > < / a > < span class = "lineno" > 564< / span >   }< / div >
< div class = "line" > < a name = "l00565" > < / a > < span class = "lineno" > 565< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00566" > < / a > < span class = "lineno" > 566< / span >   < span class = "comment" > /// used for the 8 cells were the 3 indices are swapped< / span > < / div >
< div class = "line" > < a name = "l00567" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1Score3Computer.html#a227601c3dc8779bb13747ba04934e0c8" > 567< / a > < / span >   < span class = "comment" > < / span > < span class = "keyword" > inline< / span > Taccu < a class = "code" href = "structfaiss_1_1Score3Computer.html#a227601c3dc8779bb13747ba04934e0c8" > update_k< / a > (< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > *perm, < span class = "keywordtype" > int< / span > iw, < span class = "keywordtype" > int< / span > jw,< / div >
< div class = "line" > < a name = "l00568" > < / a > < span class = "lineno" > 568< / span >   < span class = "keywordtype" > int< / span > ip0, < span class = "keywordtype" > int< / span > ip, < span class = "keywordtype" > int< / span > jp0, < span class = "keywordtype" > int< / span > jp,< / div >
< div class = "line" > < a name = "l00569" > < / a > < span class = "lineno" > 569< / span >   < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l00570" > < / a > < span class = "lineno" > 570< / span >   < span class = "keyword" > const< / span > Ttab * n_gt_ij)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00571" > < / a > < span class = "lineno" > 571< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00572" > < / a > < span class = "lineno" > 572< / span >   Taccu accu = 0;< / div >
< div class = "line" > < a name = "l00573" > < / a > < span class = "lineno" > 573< / span >   < span class = "keywordtype" > int< / span > kp0 = perm [k];< / div >
< div class = "line" > < a name = "l00574" > < / a > < span class = "lineno" > 574< / span >   < span class = "keywordtype" > int< / span > kp = perm [k == iw ? jw : k == jw ? iw : k];< / div >
< div class = "line" > < a name = "l00575" > < / a > < span class = "lineno" > 575< / span >   Ttab ng = n_gt_ij [k];< / div >
< div class = "line" > < a name = "l00576" > < / a > < span class = "lineno" > 576< / span >   < span class = "keywordflow" > if< / span > (hamming_dis (ip, jp) < hamming_dis (ip, kp)) {< / div >
< div class = "line" > < a name = "l00577" > < / a > < span class = "lineno" > 577< / span >   accu += ng;< / div >
< div class = "line" > < a name = "l00578" > < / a > < span class = "lineno" > 578< / span >   }< / div >
< div class = "line" > < a name = "l00579" > < / a > < span class = "lineno" > 579< / span >   < span class = "keywordflow" > if< / span > (hamming_dis (ip0, jp0) < hamming_dis (ip0, kp0)) {< / div >
< div class = "line" > < a name = "l00580" > < / a > < span class = "lineno" > 580< / span >   accu -= ng;< / div >
< div class = "line" > < a name = "l00581" > < / a > < span class = "lineno" > 581< / span >   }< / div >
< div class = "line" > < a name = "l00582" > < / a > < span class = "lineno" > 582< / span >   < span class = "keywordflow" > return< / span > accu;< / 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 >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00585" > < / a > < span class = "lineno" > 585< / span >   < span class = "comment" > /// compute update on a line of k' s, where i and j are swapped< / span > < / div >
< div class = "line" > < a name = "l00586" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1Score3Computer.html#a98da6005edbb5ec26311bc947866122d" > 586< / a > < / span >   < span class = "comment" > < / span > Taccu < a class = "code" href = "structfaiss_1_1Score3Computer.html#a98da6005edbb5ec26311bc947866122d" > update_j_line< / a > (< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > *perm, < span class = "keywordtype" > int< / span > iw, < span class = "keywordtype" > int< / span > jw,< / div >
< div class = "line" > < a name = "l00587" > < / a > < span class = "lineno" > 587< / span >   < span class = "keywordtype" > int< / span > ip0, < span class = "keywordtype" > int< / span > ip, < span class = "keywordtype" > int< / span > jp0, < span class = "keywordtype" > int< / span > jp,< / div >
< div class = "line" > < a name = "l00588" > < / a > < span class = "lineno" > 588< / span >   < span class = "keyword" > const< / span > Ttab * n_gt_ij)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00589" > < / a > < span class = "lineno" > 589< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00590" > < / a > < span class = "lineno" > 590< / span >   Taccu accu = 0;< / div >
< div class = "line" > < a name = "l00591" > < / a > < span class = "lineno" > 591< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > k = 0; k < nc; k++) {< / div >
< div class = "line" > < a name = "l00592" > < / a > < span class = "lineno" > 592< / span >   < span class = "keywordflow" > if< / span > (k == iw || k == jw) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00593" > < / a > < span class = "lineno" > 593< / span >   < span class = "keywordtype" > int< / span > kp = perm [k];< / div >
< div class = "line" > < a name = "l00594" > < / a > < span class = "lineno" > 594< / span >   Ttab ng = n_gt_ij [k];< / div >
< div class = "line" > < a name = "l00595" > < / a > < span class = "lineno" > 595< / span >   < span class = "keywordflow" > if< / span > (hamming_dis (ip, jp) < hamming_dis (ip, kp)) {< / div >
< div class = "line" > < a name = "l00596" > < / a > < span class = "lineno" > 596< / span >   accu += ng;< / div >
< div class = "line" > < a name = "l00597" > < / a > < span class = "lineno" > 597< / span >   }< / div >
< div class = "line" > < a name = "l00598" > < / a > < span class = "lineno" > 598< / span >   < span class = "keywordflow" > if< / span > (hamming_dis (ip0, jp0) < hamming_dis (ip0, kp)) {< / div >
< div class = "line" > < a name = "l00599" > < / a > < span class = "lineno" > 599< / span >   accu -= ng;< / div >
< div class = "line" > < a name = "l00600" > < / a > < span class = "lineno" > 600< / span >   }< / div >
< div class = "line" > < a name = "l00601" > < / a > < span class = "lineno" > 601< / span >   }< / div >
< div class = "line" > < a name = "l00602" > < / a > < span class = "lineno" > 602< / span >   < span class = "keywordflow" > return< / span > accu;< / 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 >   < / div >
< div class = "line" > < a name = "l00605" > < / a > < span class = "lineno" > 605< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00606" > < / a > < span class = "lineno" > 606< / span >   < span class = "comment" > /// considers the 2 pairs of crossing lines j=iw or jw and k = iw or kw< / span > < / div >
< div class = "line" > < a name = "l00607" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1Score3Computer.html#acf371848bac76ba275ceb5e10f805d33" > 607< / a > < / span >   < span class = "comment" > < / span > Taccu < a class = "code" href = "structfaiss_1_1Score3Computer.html#acf371848bac76ba275ceb5e10f805d33" > update_i_cross< / a > (< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > *perm, < span class = "keywordtype" > int< / span > iw, < span class = "keywordtype" > int< / span > jw,< / div >
< div class = "line" > < a name = "l00608" > < / a > < span class = "lineno" > 608< / span >   < span class = "keywordtype" > int< / span > ip0, < span class = "keywordtype" > int< / span > ip, < span class = "keyword" > const< / span > Ttab * n_gt_i)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00609" > < / a > < span class = "lineno" > 609< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00610" > < / a > < span class = "lineno" > 610< / span >   Taccu accu = 0;< / div >
< div class = "line" > < a name = "l00611" > < / a > < span class = "lineno" > 611< / span >   < span class = "keyword" > const< / span > Ttab *n_gt_ij = n_gt_i;< / div >
< div class = "line" > < a name = "l00612" > < / a > < span class = "lineno" > 612< / span >   < / div >
< div class = "line" > < a name = "l00613" > < / a > < span class = "lineno" > 613< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < nc; j++) {< / div >
< div class = "line" > < a name = "l00614" > < / a > < span class = "lineno" > 614< / span >   < span class = "keywordtype" > int< / span > jp0 = perm[j];< / div >
< div class = "line" > < a name = "l00615" > < / a > < span class = "lineno" > 615< / span >   < span class = "keywordtype" > int< / span > jp = perm [j == iw ? jw : j == jw ? iw : j];< / div >
< div class = "line" > < a name = "l00616" > < / a > < span class = "lineno" > 616< / span >   < / div >
< div class = "line" > < a name = "l00617" > < / a > < span class = "lineno" > 617< / span >   accu += < a class = "code" href = "structfaiss_1_1Score3Computer.html#a227601c3dc8779bb13747ba04934e0c8" > update_k< / a > (perm, iw, jw, ip0, ip, jp0, jp, iw, n_gt_ij);< / div >
< div class = "line" > < a name = "l00618" > < / a > < span class = "lineno" > 618< / span >   accu += < a class = "code" href = "structfaiss_1_1Score3Computer.html#a227601c3dc8779bb13747ba04934e0c8" > update_k< / a > (perm, iw, jw, ip0, ip, jp0, jp, jw, n_gt_ij);< / 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 >   < span class = "keywordflow" > if< / span > (jp != jp0)< / div >
< div class = "line" > < a name = "l00621" > < / a > < span class = "lineno" > 621< / span >   accu += < a class = "code" href = "structfaiss_1_1Score3Computer.html#a98da6005edbb5ec26311bc947866122d" > update_j_line< / a > (perm, iw, jw, ip0, ip, jp0, jp, n_gt_ij);< / div >
< div class = "line" > < a name = "l00622" > < / a > < span class = "lineno" > 622< / span >   < / div >
< div class = "line" > < a name = "l00623" > < / a > < span class = "lineno" > 623< / span >   n_gt_ij += nc;< / div >
< div class = "line" > < a name = "l00624" > < / a > < span class = "lineno" > 624< / span >   }< / div >
< div class = "line" > < a name = "l00625" > < / a > < span class = "lineno" > 625< / span >   < span class = "keywordflow" > return< / span > accu;< / div >
< div class = "line" > < a name = "l00626" > < / a > < span class = "lineno" > 626< / span >   }< / div >
< div class = "line" > < a name = "l00627" > < / a > < span class = "lineno" > 627< / span >   < / div >
< div class = "line" > < a name = "l00628" > < / a > < span class = "lineno" > 628< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00629" > < / a > < span class = "lineno" > 629< / span >   < span class = "comment" > /// PermutationObjective implementeation (just negates the scores< / span > < / div >
< div class = "line" > < a name = "l00630" > < / a > < span class = "lineno" > 630< / span >   < span class = "comment" > /// for minimization)< / span > < / div >
< div class = "line" > < a name = "l00631" > < / a > < span class = "lineno" > 631< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00632" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1Score3Computer.html#a1c4537d67802aef28ccc57c4bd87f766" > 632< / a > < / span >   < span class = "keywordtype" > double< / span > < a class = "code" href = "structfaiss_1_1Score3Computer.html#a1c4537d67802aef28ccc57c4bd87f766" > compute_cost< / a > (< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > * perm)< span class = "keyword" > const override < / span > {< / div >
< div class = "line" > < a name = "l00633" > < / a > < span class = "lineno" > 633< / span >   < span class = "keywordflow" > return< / span > -< a class = "code" href = "structfaiss_1_1Score3Computer.html#a07a726903418960a2d8000506d88f8e6" > compute< / a > (perm);< / div >
< div class = "line" > < a name = "l00634" > < / a > < span class = "lineno" > 634< / span >   }< / div >
< div class = "line" > < a name = "l00635" > < / a > < span class = "lineno" > 635< / span >   < / div >
< div class = "line" > < a name = "l00636" > < / a > < span class = "lineno" > 636< / span >   < span class = "keywordtype" > double< / span > cost_update(< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > * perm, < span class = "keywordtype" > int< / span > iw, < span class = "keywordtype" > int< / span > jw)< span class = "keyword" > const override < / span > {< / div >
< div class = "line" > < a name = "l00637" > < / a > < span class = "lineno" > 637< / span >   < span class = "keywordtype" > double< / span > ret = -< a class = "code" href = "structfaiss_1_1Score3Computer.html#a567feac7ddd3bb467a9ed30671caccb1" > compute_update< / a > (perm, iw, jw);< / div >
< div class = "line" > < a name = "l00638" > < / a > < span class = "lineno" > 638< / span >   < span class = "keywordflow" > return< / span > ret;< / div >
< div class = "line" > < a name = "l00639" > < / a > < span class = "lineno" > 639< / span >   }< / div >
< div class = "line" > < a name = "l00640" > < / a > < span class = "lineno" > 640< / span >   < / div >
< div class = "line" > < a name = "l00641" > < / a > < span class = "lineno" > 641< / span >   ~Score3Computer()< span class = "keyword" > override < / span > {}< / div >
< div class = "line" > < a name = "l00642" > < / a > < span class = "lineno" > 642< / span >   };< / div >
< div class = "line" > < a name = "l00643" > < / a > < span class = "lineno" > 643< / span >   < / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00644" > < / a > < span class = "lineno" > 644< / span >   < / div >
< div class = "line" > < a name = "l00645" > < / a > < span class = "lineno" > 645< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00646" > < / a > < span class = "lineno" > 646< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00647" > < / a > < span class = "lineno" > 647< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00648" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1IndirectSort.html" > 648< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1IndirectSort.html" > IndirectSort< / a > {< / div >
< div class = "line" > < a name = "l00649" > < / a > < span class = "lineno" > 649< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *tab;< / div >
< div class = "line" > < a name = "l00650" > < / a > < span class = "lineno" > 650< / span >   < span class = "keywordtype" > bool< / span > operator () (< span class = "keywordtype" > int< / span > a, < span class = "keywordtype" > int< / span > b) {< span class = "keywordflow" > return< / span > tab[a] < tab[b]; }< / div >
< div class = "line" > < a name = "l00651" > < / a > < span class = "lineno" > 651< / span >   };< / div >
< div class = "line" > < a name = "l00652" > < / a > < span class = "lineno" > 652< / span >   < / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00653" > < / a > < span class = "lineno" > 653< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00654" > < / a > < span class = "lineno" > 654< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00655" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1RankingScore2.html" > 655< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1RankingScore2.html" > RankingScore2< / a > : < a class = "code" href = "structfaiss_1_1Score3Computer.html" > Score3Computer< / a > < float, double> {< / div >
< div class = "line" > < a name = "l00656" > < / a > < span class = "lineno" > 656< / span >   < span class = "keywordtype" > int< / span > nbits;< / div >
< div class = "line" > < a name = "l00657" > < / a > < span class = "lineno" > 657< / span >   < span class = "keywordtype" > int< / span > nq, nb;< / div >
< div class = "line" > < a name = "l00658" > < / a > < span class = "lineno" > 658< / span >   < span class = "keyword" > const< / span > uint32_t *qcodes, *bcodes;< / div >
< div class = "line" > < a name = "l00659" > < / a > < span class = "lineno" > 659< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *gt_distances;< / div >
< div class = "line" > < a name = "l00660" > < / a > < span class = "lineno" > 660< / span >   < / div >
< div class = "line" > < a name = "l00661" > < / a > < span class = "lineno" > 661< / span >   < a class = "code" href = "structfaiss_1_1RankingScore2.html" > RankingScore2< / a > (< span class = "keywordtype" > int< / span > nbits, < span class = "keywordtype" > int< / span > nq, < span class = "keywordtype" > int< / span > nb,< / div >
< div class = "line" > < a name = "l00662" > < / a > < span class = "lineno" > 662< / span >   < span class = "keyword" > const< / span > uint32_t *qcodes, < span class = "keyword" > const< / span > uint32_t *bcodes,< / div >
< div class = "line" > < a name = "l00663" > < / a > < span class = "lineno" > 663< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *gt_distances):< / div >
< div class = "line" > < a name = "l00664" > < / a > < span class = "lineno" > 664< / span >   nbits(nbits), nq(nq), nb(nb), qcodes(qcodes),< / div >
< div class = "line" > < a name = "l00665" > < / a > < span class = "lineno" > 665< / span >   bcodes(bcodes), gt_distances(gt_distances)< / div >
< div class = "line" > < a name = "l00666" > < / a > < span class = "lineno" > 666< / span >   {< / div >
< div class = "line" > < a name = "l00667" > < / a > < span class = "lineno" > 667< / span >   n = nc = 1 < < nbits;< / div >
< div class = "line" > < a name = "l00668" > < / a > < span class = "lineno" > 668< / span >   n_gt.resize (nc * nc * nc);< / div >
< div class = "line" > < a name = "l00669" > < / a > < span class = "lineno" > 669< / span >   init_n_gt ();< / div >
< div class = "line" > < a name = "l00670" > < / a > < span class = "lineno" > 670< / span >   }< / div >
< div class = "line" > < a name = "l00671" > < / a > < span class = "lineno" > 671< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00672" > < / a > < span class = "lineno" > 672< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00673" > < / a > < span class = "lineno" > 673< / span >   < span class = "keywordtype" > double< / span > rank_weight (< span class = "keywordtype" > int< / span > r)< / div >
< div class = "line" > < a name = "l00674" > < / a > < span class = "lineno" > 674< / span >   {< / div >
< div class = "line" > < a name = "l00675" > < / a > < span class = "lineno" > 675< / span >   < span class = "keywordflow" > return< / span > 1.0 / (r + 1);< / div >
< div class = "line" > < a name = "l00676" > < / a > < span class = "lineno" > 676< / span >   }< / div >
< div class = "line" > < a name = "l00677" > < / a > < span class = "lineno" > 677< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00678" > < / a > < span class = "lineno" > 678< / span >   < span class = "comment" > /// count nb of i, j in a x b st. i < j< / span > < / div >
< div class = "line" > < a name = "l00679" > < / a > < span class = "lineno" > 679< / span >   < span class = "comment" > /// a and b should be sorted on input< / span > < / div >
< div class = "line" > < a name = "l00680" > < / a > < span class = "lineno" > 680< / span >   < span class = "comment" > /// they are the ranks of j and k respectively.< / span > < / div >
< div class = "line" > < a name = "l00681" > < / a > < span class = "lineno" > 681< / span >   < span class = "comment" > /// specific version for diff-of-rank weighting, cannot optimized< / span > < / div >
< div class = "line" > < a name = "l00682" > < / a > < span class = "lineno" > 682< / span >   < span class = "comment" > /// with a cumulative table< / span > < / div >
< div class = "line" > < a name = "l00683" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1RankingScore2.html#a16c753a4136b3c851ea81133a26a02da" > 683< / a > < / span >   < span class = "comment" > < / span > < span class = "keywordtype" > double< / span > < a class = "code" href = "structfaiss_1_1RankingScore2.html#a16c753a4136b3c851ea81133a26a02da" > accum_gt_weight_diff< / a > (< span class = "keyword" > const< / span > std::vector< int> & a,< / div >
< div class = "line" > < a name = "l00684" > < / a > < span class = "lineno" > 684< / span >   < span class = "keyword" > const< / span > std::vector< int> & b)< / 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 >   < span class = "keywordtype" > int< / span > nb = b.size(), na = a.size();< / div >
< div class = "line" > < a name = "l00687" > < / a > < span class = "lineno" > 687< / span >   < / div >
< div class = "line" > < a name = "l00688" > < / a > < span class = "lineno" > 688< / span >   < span class = "keywordtype" > double< / span > accu = 0;< / div >
< div class = "line" > < a name = "l00689" > < / a > < span class = "lineno" > 689< / span >   < span class = "keywordtype" > int< / span > j = 0;< / div >
< div class = "line" > < a name = "l00690" > < / a > < span class = "lineno" > 690< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < na; i++) {< / div >
< div class = "line" > < a name = "l00691" > < / a > < span class = "lineno" > 691< / span >   < span class = "keywordtype" > int< / span > ai = a[i];< / div >
< div class = "line" > < a name = "l00692" > < / a > < span class = "lineno" > 692< / span >   < span class = "keywordflow" > while< / span > (j < nb & & ai > = b[j]) j++;< / 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 >   < span class = "keywordtype" > double< / span > accu_i = 0;< / div >
< div class = "line" > < a name = "l00695" > < / a > < span class = "lineno" > 695< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > k = j; k < b.size(); k++)< / div >
< div class = "line" > < a name = "l00696" > < / a > < span class = "lineno" > 696< / span >   accu_i += rank_weight (b[k] - ai);< / div >
< div class = "line" > < a name = "l00697" > < / a > < span class = "lineno" > 697< / span >   < / div >
< div class = "line" > < a name = "l00698" > < / a > < span class = "lineno" > 698< / span >   accu += rank_weight (ai) * accu_i;< / div >
< div class = "line" > < a name = "l00699" > < / a > < span class = "lineno" > 699< / span >   < / div >
< div class = "line" > < a name = "l00700" > < / a > < span class = "lineno" > 700< / span >   }< / div >
< div class = "line" > < a name = "l00701" > < / a > < span class = "lineno" > 701< / span >   < span class = "keywordflow" > return< / span > accu;< / div >
< div class = "line" > < a name = "l00702" > < / a > < span class = "lineno" > 702< / span >   }< / div >
< div class = "line" > < a name = "l00703" > < / a > < span class = "lineno" > 703< / span >   < / div >
< div class = "line" > < a name = "l00704" > < / a > < span class = "lineno" > 704< / span >   < span class = "keywordtype" > void< / span > init_n_gt ()< / div >
< div class = "line" > < a name = "l00705" > < / a > < span class = "lineno" > 705< / span >   {< / div >
< div class = "line" > < a name = "l00706" > < / a > < span class = "lineno" > 706< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > q = 0; q < nq; q++) {< / div >
< div class = "line" > < a name = "l00707" > < / a > < span class = "lineno" > 707< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *gtd = gt_distances + q * nb;< / div >
< div class = "line" > < a name = "l00708" > < / a > < span class = "lineno" > 708< / span >   < span class = "keyword" > const< / span > uint32_t *cb = bcodes;< span class = "comment" > // all same codes< / span > < / div >
< div class = "line" > < a name = "l00709" > < / a > < span class = "lineno" > 709< / span >   < span class = "keywordtype" > float< / span > * n_gt_q = & n_gt [qcodes[q] * nc * nc];< / div >
< div class = "line" > < a name = "l00710" > < / a > < span class = "lineno" > 710< / span >   < / div >
< div class = "line" > < a name = "l00711" > < / a > < span class = "lineno" > 711< / span >   printf(< span class = "stringliteral" > " init gt for q=%d/%d \r" < / span > , q, nq); fflush(stdout);< / 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 >   std::vector< int> rankv (nb);< / div >
< div class = "line" > < a name = "l00714" > < / a > < span class = "lineno" > 714< / span >   < span class = "keywordtype" > int< / span > * ranks = rankv.data();< / div >
< div class = "line" > < a name = "l00715" > < / a > < span class = "lineno" > 715< / span >   < / div >
< div class = "line" > < a name = "l00716" > < / a > < span class = "lineno" > 716< / span >   < span class = "comment" > // elements in each code bin, ordered by rank within each bin< / span > < / div >
< div class = "line" > < a name = "l00717" > < / a > < span class = "lineno" > 717< / span >   std::vector< std::vector< int> > tab (nc);< / 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 >   { < span class = "comment" > // build rank table< / span > < / div >
< div class = "line" > < a name = "l00720" > < / a > < span class = "lineno" > 720< / span >   < a class = "code" href = "structfaiss_1_1IndirectSort.html" > IndirectSort< / a > s = {gtd};< / div >
< div class = "line" > < a name = "l00721" > < / a > < span class = "lineno" > 721< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < nb; j++) ranks[j] = j;< / div >
< div class = "line" > < a name = "l00722" > < / a > < span class = "lineno" > 722< / span >   std::sort (ranks, ranks + nb, s);< / div >
< div class = "line" > < a name = "l00723" > < / a > < span class = "lineno" > 723< / span >   }< / div >
< div class = "line" > < a name = "l00724" > < / a > < span class = "lineno" > 724< / span >   < / div >
< div class = "line" > < a name = "l00725" > < / a > < span class = "lineno" > 725< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > rank = 0; rank < nb; rank++) {< / div >
< div class = "line" > < a name = "l00726" > < / a > < span class = "lineno" > 726< / span >   < span class = "keywordtype" > int< / span > i = ranks [rank];< / div >
< div class = "line" > < a name = "l00727" > < / a > < span class = "lineno" > 727< / span >   tab [cb[i]].push_back (rank);< / 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 >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00730" > < / a > < span class = "lineno" > 730< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00731" > < / a > < span class = "lineno" > 731< / span >   < span class = "comment" > // this is very expensive. Any suggestion for improvement< / span > < / div >
< div class = "line" > < a name = "l00732" > < / a > < span class = "lineno" > 732< / span >   < span class = "comment" > // welcome.< / span > < / div >
< div class = "line" > < a name = "l00733" > < / a > < span class = "lineno" > 733< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < nc; i++) {< / div >
< div class = "line" > < a name = "l00734" > < / a > < span class = "lineno" > 734< / span >   std::vector< int> & di = tab[i];< / div >
< div class = "line" > < a name = "l00735" > < / a > < span class = "lineno" > 735< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < nc; j++) {< / div >
< div class = "line" > < a name = "l00736" > < / a > < span class = "lineno" > 736< / span >   std::vector< int> & dj = tab[j];< / div >
< div class = "line" > < a name = "l00737" > < / a > < span class = "lineno" > 737< / span >   n_gt_q [i * nc + j] += < a class = "code" href = "structfaiss_1_1RankingScore2.html#a16c753a4136b3c851ea81133a26a02da" > accum_gt_weight_diff< / a > (di, dj);< / 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 >   }< / div >
< div class = "line" > < a name = "l00741" > < / a > < span class = "lineno" > 741< / span >   < / div >
< div class = "line" > < a name = "l00742" > < / a > < span class = "lineno" > 742< / span >   }< / div >
< div class = "line" > < a name = "l00743" > < / a > < span class = "lineno" > 743< / span >   < / div >
< div class = "line" > < a name = "l00744" > < / a > < span class = "lineno" > 744< / span >   }< / div >
< div class = "line" > < a name = "l00745" > < / a > < span class = "lineno" > 745< / span >   < / div >
< div class = "line" > < a name = "l00746" > < / a > < span class = "lineno" > 746< / span >   };< / div >
< div class = "line" > < a name = "l00747" > < / a > < span class = "lineno" > 747< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00748" > < / a > < span class = "lineno" > 748< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00749" > < / a > < span class = "lineno" > 749< / span >   < span class = "comment" > /*****************************************< / span > < / div >
< div class = "line" > < a name = "l00750" > < / a > < span class = "lineno" > 750< / span >   < span class = "comment" > * PolysemousTraining< / span > < / div >
< div class = "line" > < a name = "l00751" > < / a > < span class = "lineno" > 751< / span >   < span class = "comment" > ******************************************/< / span > < / div >
< div class = "line" > < a name = "l00752" > < / a > < span class = "lineno" > 752< / span >   < / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00753" > < / a > < span class = "lineno" > 753< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00754" > < / a > < span class = "lineno" > 754< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00755" > < / a > < span class = "lineno" > 755< / span >   PolysemousTraining::PolysemousTraining ()< / 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 >   optimization_type = < a class = "code" href = "structfaiss_1_1PolysemousTraining.html#aeb5a523056697934972f95fd428f61efa4f1f59a0027c1662a7aaf66f2a78fb23" > OT_ReproduceDistances_affine< / a > ;< / div >
< div class = "line" > < a name = "l00758" > < / a > < span class = "lineno" > 758< / span >   ntrain_permutation = 0;< / div >
< div class = "line" > < a name = "l00759" > < / a > < span class = "lineno" > 759< / span >   dis_weight_factor = log(2);< / div >
< div class = "line" > < a name = "l00760" > < / a > < span class = "lineno" > 760< / span >   }< / div >
< div class = "line" > < a name = "l00761" > < / a > < span class = "lineno" > 761< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00762" > < / a > < span class = "lineno" > 762< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00763" > < / a > < span class = "lineno" > 763< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00764" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1PolysemousTraining.html#a6989e2b573d4368e7f863edbbb2f00b8" > 764< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1PolysemousTraining.html#a6989e2b573d4368e7f863edbbb2f00b8" > PolysemousTraining::optimize_reproduce_distances< / a > (< / div >
< div class = "line" > < a name = "l00765" > < / a > < span class = "lineno" > 765< / span >   < a class = "code" href = "structfaiss_1_1ProductQuantizer.html" > ProductQuantizer< / a > & pq)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00766" > < / a > < span class = "lineno" > 766< / span >   < span class = "keyword" > < / span > {< / 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 >   < span class = "keywordtype" > int< / span > dsub = pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a467b451ca203544e42c250e4be65b983" > dsub< / a > ;< / div >
< div class = "line" > < a name = "l00769" > < / a > < span class = "lineno" > 769< / span >   < / div >
< div class = "line" > < a name = "l00770" > < / a > < span class = "lineno" > 770< / span >   < span class = "keywordtype" > int< / span > n = pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > ;< / div >
< div class = "line" > < a name = "l00771" > < / a > < span class = "lineno" > 771< / span >   < span class = "keywordtype" > int< / span > nbits = pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5" > nbits< / a > ;< / div >
< div class = "line" > < a name = "l00772" > < / a > < span class = "lineno" > 772< / span >   < / div >
< div class = "line" > < a name = "l00773" > < / a > < span class = "lineno" > 773< / span >   < span class = "preprocessor" > #pragma omp parallel for< / span > < / div >
< div class = "line" > < a name = "l00774" > < / a > < span class = "lineno" > 774< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > ; m++) {< / div >
< div class = "line" > < a name = "l00775" > < / a > < span class = "lineno" > 775< / span >   std::vector< double> dis_table;< / 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 >   < span class = "comment" > // printf (" Optimizing quantizer %d\n" , m);< / span > < / div >
< div class = "line" > < a name = "l00778" > < / a > < span class = "lineno" > 778< / span >   < / div >
< div class = "line" > < a name = "l00779" > < / a > < span class = "lineno" > 779< / span >   < span class = "keywordtype" > float< / span > * centroids = pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a4f0f33c011dffe633a1748a48a082c22" > get_centroids< / a > (m, 0);< / div >
< div class = "line" > < a name = "l00780" > < / a > < span class = "lineno" > 780< / span >   < / 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 < n; i++) {< / div >
< div class = "line" > < a name = "l00782" > < / a > < span class = "lineno" > 782< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < n; j++) {< / div >
< div class = "line" > < a name = "l00783" > < / a > < span class = "lineno" > 783< / span >   dis_table.push_back (< a class = "code" href = "namespacefaiss.html#a7466bd32de31640860393a701eaac5ad" > fvec_L2sqr< / a > (centroids + i * dsub,< / div >
< div class = "line" > < a name = "l00784" > < / a > < span class = "lineno" > 784< / span >   centroids + j * dsub,< / div >
< div class = "line" > < a name = "l00785" > < / a > < span class = "lineno" > 785< / span >   dsub));< / 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 >   std::vector< int> perm (n);< / div >
< div class = "line" > < a name = "l00790" > < / a > < span class = "lineno" > 790< / span >   ReproduceWithHammingObjective obj (< / div >
< div class = "line" > < a name = "l00791" > < / a > < span class = "lineno" > 791< / span >   nbits, dis_table,< / div >
< div class = "line" > < a name = "l00792" > < / a > < span class = "lineno" > 792< / span >   dis_weight_factor);< / div >
< div class = "line" > < a name = "l00793" > < / a > < span class = "lineno" > 793< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00794" > < / a > < span class = "lineno" > 794< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00795" > < / a > < span class = "lineno" > 795< / span >   < a class = "code" href = "structfaiss_1_1SimulatedAnnealingOptimizer.html" > SimulatedAnnealingOptimizer< / a > optim (& obj, *< span class = "keyword" > this< / span > );< / div >
< div class = "line" > < a name = "l00796" > < / a > < span class = "lineno" > 796< / span >   < / div >
< div class = "line" > < a name = "l00797" > < / a > < span class = "lineno" > 797< / span >   < span class = "keywordflow" > if< / span > (log_pattern.size()) {< / div >
< div class = "line" > < a name = "l00798" > < / a > < span class = "lineno" > 798< / span >   < span class = "keywordtype" > char< / span > fname[256];< / div >
< div class = "line" > < a name = "l00799" > < / a > < span class = "lineno" > 799< / span >   snprintf (fname, 256, log_pattern.c_str(), m);< / div >
< div class = "line" > < a name = "l00800" > < / a > < span class = "lineno" > 800< / span >   printf (< span class = "stringliteral" > " opening log file %s\n" < / span > , fname);< / div >
< div class = "line" > < a name = "l00801" > < / a > < span class = "lineno" > 801< / span >   optim.logfile = fopen (fname, < span class = "stringliteral" > " w" < / span > );< / div >
< div class = "line" > < a name = "l00802" > < / a > < span class = "lineno" > 802< / span >   FAISS_THROW_IF_NOT_MSG (optim.logfile, < span class = "stringliteral" > " could not open logfile" < / span > );< / div >
< div class = "line" > < a name = "l00803" > < / a > < span class = "lineno" > 803< / span >   }< / div >
< div class = "line" > < a name = "l00804" > < / a > < span class = "lineno" > 804< / span >   < span class = "keywordtype" > double< / span > final_cost = optim.run_optimization (perm.data());< / 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" > if< / span > (verbose > 0) {< / div >
< div class = "line" > < a name = "l00807" > < / a > < span class = "lineno" > 807< / span >   printf (< span class = "stringliteral" > " SimulatedAnnealingOptimizer for m=%d: %g -> %g\n" < / span > ,< / div >
< div class = "line" > < a name = "l00808" > < / a > < span class = "lineno" > 808< / span >   m, optim.< a class = "code" href = "structfaiss_1_1SimulatedAnnealingOptimizer.html#aa8ff19f97482c6213b2a8ff3b190412b" > init_cost< / a > , final_cost);< / div >
< div class = "line" > < a name = "l00809" > < / a > < span class = "lineno" > 809< / span >   }< / div >
< div class = "line" > < a name = "l00810" > < / a > < span class = "lineno" > 810< / span >   < / div >
< div class = "line" > < a name = "l00811" > < / a > < span class = "lineno" > 811< / span >   < span class = "keywordflow" > if< / span > (log_pattern.size()) fclose (optim.logfile);< / div >
< div class = "line" > < a name = "l00812" > < / a > < span class = "lineno" > 812< / span >   < / div >
< div class = "line" > < a name = "l00813" > < / a > < span class = "lineno" > 813< / span >   std::vector< float> centroids_copy;< / div >
< div class = "line" > < a name = "l00814" > < / a > < span class = "lineno" > 814< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < dsub * n; i++)< / div >
< div class = "line" > < a name = "l00815" > < / a > < span class = "lineno" > 815< / span >   centroids_copy.push_back (centroids[i]);< / div >
< div class = "line" > < a name = "l00816" > < / a > < span class = "lineno" > 816< / span >   < / div >
< div class = "line" > < a name = "l00817" > < / a > < span class = "lineno" > 817< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++)< / div >
< div class = "line" > < a name = "l00818" > < / a > < span class = "lineno" > 818< / span >   memcpy (centroids + perm[i] * dsub,< / div >
< div class = "line" > < a name = "l00819" > < / a > < span class = "lineno" > 819< / span >   centroids_copy.data() + i * dsub,< / div >
< div class = "line" > < a name = "l00820" > < / a > < span class = "lineno" > 820< / span >   dsub * < span class = "keyword" > sizeof< / span > (centroids[0]));< / div >
< div class = "line" > < a name = "l00821" > < / a > < span class = "lineno" > 821< / span >   < / div >
< div class = "line" > < a name = "l00822" > < / a > < span class = "lineno" > 822< / span >   }< / div >
< div class = "line" > < a name = "l00823" > < / a > < span class = "lineno" > 823< / span >   < / 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 >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00826" > < / a > < span class = "lineno" > 826< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00827" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1PolysemousTraining.html#a0ac61389b6fcc7f98e998d9d0cc2664a" > 827< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1PolysemousTraining.html#a0ac61389b6fcc7f98e998d9d0cc2664a" > PolysemousTraining::optimize_ranking< / a > (< / div >
< div class = "line" > < a name = "l00828" > < / a > < span class = "lineno" > 828< / span >   < a class = "code" href = "structfaiss_1_1ProductQuantizer.html" > ProductQuantizer< / a > & pq, < span class = "keywordtype" > size_t< / span > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00829" > < / a > < span class = "lineno" > 829< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00830" > < / a > < span class = "lineno" > 830< / span >   < / div >
< div class = "line" > < a name = "l00831" > < / a > < span class = "lineno" > 831< / span >   < span class = "keywordtype" > int< / span > dsub = pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a467b451ca203544e42c250e4be65b983" > dsub< / a > ;< / div >
< div class = "line" > < a name = "l00832" > < / a > < span class = "lineno" > 832< / span >   < / div >
< div class = "line" > < a name = "l00833" > < / a > < span class = "lineno" > 833< / span >   < span class = "keywordtype" > int< / span > nbits = pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5" > nbits< / a > ;< / div >
< div class = "line" > < a name = "l00834" > < / a > < span class = "lineno" > 834< / span >   < / div >
< div class = "line" > < a name = "l00835" > < / a > < span class = "lineno" > 835< / span >   std::vector< uint8_t> all_codes (pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > * n);< / 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 >   pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ae5a340ee5a4b1d35a565b167de2a2ef1" > compute_codes< / a > (x, all_codes.data(), n);< / div >
< div class = "line" > < a name = "l00838" > < / a > < span class = "lineno" > 838< / span >   < / div >
< div class = "line" > < a name = "l00839" > < / a > < span class = "lineno" > 839< / span >   FAISS_THROW_IF_NOT (pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5" > nbits< / a > == 8);< / div >
< div class = "line" > < a name = "l00840" > < / a > < span class = "lineno" > 840< / span >   < / div >
< div class = "line" > < a name = "l00841" > < / a > < span class = "lineno" > 841< / span >   < span class = "keywordflow" > if< / span > (n == 0)< / div >
< div class = "line" > < a name = "l00842" > < / a > < span class = "lineno" > 842< / span >   pq.compute_sdc_table ();< / div >
< div class = "line" > < a name = "l00843" > < / a > < span class = "lineno" > 843< / span >   < / div >
< div class = "line" > < a name = "l00844" > < / a > < span class = "lineno" > 844< / span >   < span class = "preprocessor" > #pragma omp parallel for< / span > < / div >
< div class = "line" > < a name = "l00845" > < / a > < span class = "lineno" > 845< / span >   < span class = "preprocessor" > < / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > m = 0; m < pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > M< / a > ; m++) {< / div >
< div class = "line" > < a name = "l00846" > < / a > < span class = "lineno" > 846< / span >   < span class = "keywordtype" > size_t< / span > nq, nb;< / div >
< div class = "line" > < a name = "l00847" > < / a > < span class = "lineno" > 847< / span >   std::vector < uint32_t> codes; < span class = "comment" > // query codes, then db codes< / span > < / div >
< div class = "line" > < a name = "l00848" > < / a > < span class = "lineno" > 848< / span >   std::vector < float> gt_distances; < span class = "comment" > // nq * nb matrix of distances< / 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" > 850< / span >   < span class = "keywordflow" > if< / span > (n > 0) {< / div >
< div class = "line" > < a name = "l00851" > < / a > < span class = "lineno" > 851< / span >   std::vector< float> xtrain (n * dsub);< / div >
< div class = "line" > < a name = "l00852" > < / a > < span class = "lineno" > 852< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++)< / div >
< div class = "line" > < a name = "l00853" > < / a > < span class = "lineno" > 853< / span >   memcpy (xtrain.data() + i * dsub,< / div >
< div class = "line" > < a name = "l00854" > < / a > < span class = "lineno" > 854< / span >   x + i * pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a567cd512438f9e3404d9339a232d7695" > d< / a > + m * dsub,< / div >
< div class = "line" > < a name = "l00855" > < / a > < span class = "lineno" > 855< / span >   < span class = "keyword" > sizeof< / span > (float) * dsub);< / div >
< div class = "line" > < a name = "l00856" > < / a > < span class = "lineno" > 856< / span >   < / div >
< div class = "line" > < a name = "l00857" > < / a > < span class = "lineno" > 857< / span >   codes.resize (n);< / div >
< div class = "line" > < a name = "l00858" > < / a > < span class = "lineno" > 858< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++)< / div >
< div class = "line" > < a name = "l00859" > < / a > < span class = "lineno" > 859< / span >   codes [i] = all_codes [i * pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > code_size< / a > + m];< / div >
< div class = "line" > < a name = "l00860" > < / a > < span class = "lineno" > 860< / span >   < / div >
< div class = "line" > < a name = "l00861" > < / a > < span class = "lineno" > 861< / span >   nq = n / 4; nb = n - nq;< / div >
< div class = "line" > < a name = "l00862" > < / a > < span class = "lineno" > 862< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *xq = xtrain.data();< / div >
< div class = "line" > < a name = "l00863" > < / a > < span class = "lineno" > 863< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *xb = xq + nq * dsub;< / div >
< div class = "line" > < a name = "l00864" > < / a > < span class = "lineno" > 864< / span >   < / div >
< div class = "line" > < a name = "l00865" > < / a > < span class = "lineno" > 865< / span >   gt_distances.resize (nq * nb);< / div >
< div class = "line" > < a name = "l00866" > < / a > < span class = "lineno" > 866< / span >   < / div >
< div class = "line" > < a name = "l00867" > < / a > < span class = "lineno" > 867< / span >   < a class = "code" href = "namespacefaiss.html#a3d9c7db82d43c1f0ab1d28b92bc9fe57" > pairwise_L2sqr< / a > (dsub,< / div >
< div class = "line" > < a name = "l00868" > < / a > < span class = "lineno" > 868< / span >   nq, xq,< / div >
< div class = "line" > < a name = "l00869" > < / a > < span class = "lineno" > 869< / span >   nb, xb,< / div >
< div class = "line" > < a name = "l00870" > < / a > < span class = "lineno" > 870< / span >   gt_distances.data());< / div >
< div class = "line" > < a name = "l00871" > < / a > < span class = "lineno" > 871< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00872" > < / a > < span class = "lineno" > 872< / span >   nq = nb = pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > ;< / div >
< div class = "line" > < a name = "l00873" > < / a > < span class = "lineno" > 873< / span >   codes.resize (2 * nq);< / div >
< div class = "line" > < a name = "l00874" > < / a > < span class = "lineno" > 874< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < nq; i++)< / div >
< div class = "line" > < a name = "l00875" > < / a > < span class = "lineno" > 875< / span >   codes[i] = codes [i + nq] = i;< / div >
< div class = "line" > < a name = "l00876" > < / a > < span class = "lineno" > 876< / span >   < / div >
< div class = "line" > < a name = "l00877" > < / a > < span class = "lineno" > 877< / span >   gt_distances.resize (nq * nb);< / div >
< div class = "line" > < a name = "l00878" > < / a > < span class = "lineno" > 878< / span >   < / div >
< div class = "line" > < a name = "l00879" > < / a > < span class = "lineno" > 879< / span >   memcpy (gt_distances.data (),< / div >
< div class = "line" > < a name = "l00880" > < / a > < span class = "lineno" > 880< / span >   pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a6bd65fb4407452f73acb7242931d09e4" > sdc_table< / a > .data () + m * nq * nb,< / div >
< div class = "line" > < a name = "l00881" > < / a > < span class = "lineno" > 881< / span >   < span class = "keyword" > sizeof< / span > (float) * nq * nb);< / 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 >   < span class = "keywordtype" > double< / span > t0 = < a class = "code" href = "namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb" > getmillisecs< / a > ();< / div >
< div class = "line" > < a name = "l00885" > < / a > < span class = "lineno" > 885< / span >   < / div >
< div class = "line" > < a name = "l00886" > < / a > < span class = "lineno" > 886< / span >   < a class = "code" href = "structfaiss_1_1PermutationObjective.html" > PermutationObjective< / a > *obj = < span class = "keyword" > new< / span > < a class = "code" href = "structfaiss_1_1RankingScore2.html" > RankingScore2< / a > (< / div >
< div class = "line" > < a name = "l00887" > < / a > < span class = "lineno" > 887< / span >   nbits, nq, nb,< / div >
< div class = "line" > < a name = "l00888" > < / a > < span class = "lineno" > 888< / span >   codes.data(), codes.data() + nq,< / div >
< div class = "line" > < a name = "l00889" > < / a > < span class = "lineno" > 889< / span >   gt_distances.data ());< / div >
< div class = "line" > < a name = "l00890" > < / a > < span class = "lineno" > 890< / span >   < a class = "code" href = "structfaiss_1_1ScopeDeleter1.html" > ScopeDeleter1< PermutationObjective> < / a > del (obj);< / 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 = "keywordflow" > if< / span > (verbose > 0) {< / div >
< div class = "line" > < a name = "l00893" > < / a > < span class = "lineno" > 893< / span >   printf(< span class = "stringliteral" > " m=%d, nq=%ld, nb=%ld, intialize RankingScore " < / span > < / div >
< div class = "line" > < a name = "l00894" > < / a > < span class = "lineno" > 894< / span >   < span class = "stringliteral" > " in %.3f ms\n" < / span > ,< / div >
< div class = "line" > < a name = "l00895" > < / a > < span class = "lineno" > 895< / span >   m, nq, nb, < a class = "code" href = "namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb" > getmillisecs< / a > () - t0);< / div >
< div class = "line" > < a name = "l00896" > < / a > < span class = "lineno" > 896< / span >   }< / div >
< div class = "line" > < a name = "l00897" > < / a > < span class = "lineno" > 897< / span >   < / div >
< div class = "line" > < a name = "l00898" > < / a > < span class = "lineno" > 898< / span >   < a class = "code" href = "structfaiss_1_1SimulatedAnnealingOptimizer.html" > SimulatedAnnealingOptimizer< / a > optim (obj, *< span class = "keyword" > this< / span > );< / 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 >   < span class = "keywordflow" > if< / span > (log_pattern.size()) {< / div >
< div class = "line" > < a name = "l00901" > < / a > < span class = "lineno" > 901< / span >   < span class = "keywordtype" > char< / span > fname[256];< / div >
< div class = "line" > < a name = "l00902" > < / a > < span class = "lineno" > 902< / span >   snprintf (fname, 256, log_pattern.c_str(), m);< / div >
< div class = "line" > < a name = "l00903" > < / a > < span class = "lineno" > 903< / span >   printf (< span class = "stringliteral" > " opening log file %s\n" < / span > , fname);< / div >
< div class = "line" > < a name = "l00904" > < / a > < span class = "lineno" > 904< / span >   optim.logfile = fopen (fname, < span class = "stringliteral" > " w" < / span > );< / div >
< div class = "line" > < a name = "l00905" > < / a > < span class = "lineno" > 905< / span >   FAISS_THROW_IF_NOT_FMT (optim.logfile,< / div >
< div class = "line" > < a name = "l00906" > < / a > < span class = "lineno" > 906< / span >   < span class = "stringliteral" > " could not open logfile %s" < / span > , fname);< / 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 >   std::vector< int> perm (pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > );< / div >
< div class = "line" > < a name = "l00910" > < / a > < span class = "lineno" > 910< / span >   < / div >
< div class = "line" > < a name = "l00911" > < / a > < span class = "lineno" > 911< / span >   < span class = "keywordtype" > double< / span > final_cost = optim.run_optimization (perm.data());< / div >
< div class = "line" > < a name = "l00912" > < / a > < span class = "lineno" > 912< / span >   printf (< span class = "stringliteral" > " SimulatedAnnealingOptimizer for m=%d: %g -> %g\n" < / span > ,< / div >
< div class = "line" > < a name = "l00913" > < / a > < span class = "lineno" > 913< / span >   m, optim.< a class = "code" href = "structfaiss_1_1SimulatedAnnealingOptimizer.html#aa8ff19f97482c6213b2a8ff3b190412b" > init_cost< / a > , final_cost);< / div >
< div class = "line" > < a name = "l00914" > < / a > < span class = "lineno" > 914< / span >   < / div >
< div class = "line" > < a name = "l00915" > < / a > < span class = "lineno" > 915< / span >   < span class = "keywordflow" > if< / span > (log_pattern.size()) fclose (optim.logfile);< / div >
< div class = "line" > < a name = "l00916" > < / a > < span class = "lineno" > 916< / span >   < / div >
< div class = "line" > < a name = "l00917" > < / a > < span class = "lineno" > 917< / span >   < span class = "keywordtype" > float< / span > * centroids = pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a4f0f33c011dffe633a1748a48a082c22" > get_centroids< / a > (m, 0);< / 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 >   std::vector< float> centroids_copy;< / div >
< div class = "line" > < a name = "l00920" > < / a > < span class = "lineno" > 920< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < dsub * pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > ; i++)< / div >
< div class = "line" > < a name = "l00921" > < / a > < span class = "lineno" > 921< / span >   centroids_copy.push_back (centroids[i]);< / 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 >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < pq.< a class = "code" href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > ksub< / a > ; i++)< / div >
< div class = "line" > < a name = "l00924" > < / a > < span class = "lineno" > 924< / span >   memcpy (centroids + perm[i] * dsub,< / div >
< div class = "line" > < a name = "l00925" > < / a > < span class = "lineno" > 925< / span >   centroids_copy.data() + i * dsub,< / div >
< div class = "line" > < a name = "l00926" > < / a > < span class = "lineno" > 926< / span >   dsub * < span class = "keyword" > sizeof< / span > (centroids[0]));< / div >
< div class = "line" > < a name = "l00927" > < / a > < span class = "lineno" > 927< / span >   < / div >
< div class = "line" > < a name = "l00928" > < / a > < span class = "lineno" > 928< / span >   }< / 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 >   }< / div >
< div class = "line" > < a name = "l00931" > < / a > < span class = "lineno" > 931< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00932" > < / a > < span class = "lineno" > 932< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00933" > < / a > < span class = "lineno" > 933< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00934" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1PolysemousTraining.html#a995374ba2f0bc2738edae72ca9142f82" > 934< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "structfaiss_1_1PolysemousTraining.html#a995374ba2f0bc2738edae72ca9142f82" > PolysemousTraining::optimize_pq_for_hamming< / a > (< a class = "code" href = "structfaiss_1_1ProductQuantizer.html" > ProductQuantizer< / a > & pq,< / div >
< div class = "line" > < a name = "l00935" > < / a > < span class = "lineno" > 935< / span >   < span class = "keywordtype" > size_t< / span > n, < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > *x)< span class = "keyword" > const< / span > < / div >
< div class = "line" > < a name = "l00936" > < / a > < span class = "lineno" > 936< / span >   < span class = "keyword" > < / span > {< / div >
< div class = "line" > < a name = "l00937" > < / a > < span class = "lineno" > 937< / span >   < span class = "keywordflow" > if< / span > (optimization_type == OT_None) {< / 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 >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (optimization_type == < a class = "code" href = "structfaiss_1_1PolysemousTraining.html#aeb5a523056697934972f95fd428f61efa4f1f59a0027c1662a7aaf66f2a78fb23" > OT_ReproduceDistances_affine< / a > ) {< / div >
< div class = "line" > < a name = "l00940" > < / a > < span class = "lineno" > 940< / span >   < a class = "code" href = "structfaiss_1_1PolysemousTraining.html#a6989e2b573d4368e7f863edbbb2f00b8" > optimize_reproduce_distances< / a > (pq);< / div >
< div class = "line" > < a name = "l00941" > < / a > < span class = "lineno" > 941< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00942" > < / a > < span class = "lineno" > 942< / span >   < a class = "code" href = "structfaiss_1_1PolysemousTraining.html#a0ac61389b6fcc7f98e998d9d0cc2664a" > optimize_ranking< / a > (pq, n, x);< / div >
< div class = "line" > < a name = "l00943" > < / a > < span class = "lineno" > 943< / span >   }< / div >
< div class = "line" > < a name = "l00944" > < / a > < span class = "lineno" > 944< / span >   < / div >
< div class = "line" > < a name = "l00945" > < / a > < span class = "lineno" > 945< / span >   pq.compute_sdc_table ();< / div >
< div class = "line" > < a name = "l00946" > < / a > < span class = "lineno" > 946< / span >   < / div >
< div class = "line" > < a name = "l00947" > < / a > < span class = "lineno" > 947< / span >   }< / div >
< div class = "line" > < a name = "l00948" > < / a > < span class = "lineno" > 948< / span >   < / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00949" > < / a > < span class = "lineno" > 949< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00950" > < / a > < span class = "lineno" > 950< / span >   } < span class = "comment" > // namespace faiss< / span > < / div >
< div class = "ttc" id = "structfaiss_1_1RandomGenerator_html" > < div class = "ttname" > < a href = "structfaiss_1_1RandomGenerator.html" > faiss::RandomGenerator< / a > < / div > < div class = "ttdoc" > random generator that can be used in multithreaded contexts < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8h_source.html#l00047" > utils.h:47< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_ac920fea11f02e8407d12cc99a09f5ea5" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5" > faiss::ProductQuantizer::nbits< / a > < / div > < div class = "ttdeci" > size_t nbits< / div > < div class = "ttdoc" > number of bits per quantization index < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00029" > ProductQuantizer.h:29< / a > < / div > < / div >
< div class = "ttc" id = "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__simd_8cpp_source.html#l00501" > utils_simd.cpp:501< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Score3Computer_html_a567feac7ddd3bb467a9ed30671caccb1" > < div class = "ttname" > < a href = "structfaiss_1_1Score3Computer.html#a567feac7ddd3bb467a9ed30671caccb1" > faiss::Score3Computer::compute_update< / a > < / div > < div class = "ttdeci" > Taccu compute_update(const int *perm, int iw, int jw) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00487" > PolysemousTraining.cpp:487< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a6bd65fb4407452f73acb7242931d09e4" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a6bd65fb4407452f73acb7242931d09e4" > faiss::ProductQuantizer::sdc_table< / a > < / div > < div class = "ttdeci" > std::vector< float > sdc_table< / div > < div class = "ttdoc" > Symmetric Distance Table. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00165" > ProductQuantizer.h:165< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1SimulatedAnnealingOptimizer_html_ab258eaf892742e37dd2c3bfd3b1c39e1" > < div class = "ttname" > < a href = "structfaiss_1_1SimulatedAnnealingOptimizer.html#ab258eaf892742e37dd2c3bfd3b1c39e1" > faiss::SimulatedAnnealingOptimizer::SimulatedAnnealingOptimizer< / a > < / div > < div class = "ttdeci" > SimulatedAnnealingOptimizer(PermutationObjective *obj, const SimulatedAnnealingParameters & p)< / div > < div class = "ttdoc" > logs values of the cost function < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00068" > PolysemousTraining.cpp:68< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ScopeDeleter1_html" > < div class = "ttname" > < a href = "structfaiss_1_1ScopeDeleter1.html" > faiss::ScopeDeleter1< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "FaissException_8h_source.html#l00058" > FaissException.h:58< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1SimulatedAnnealingOptimizer_html_a90edfc401372aa1a2a832b403e26bfd1" > < div class = "ttname" > < a href = "structfaiss_1_1SimulatedAnnealingOptimizer.html#a90edfc401372aa1a2a832b403e26bfd1" > faiss::SimulatedAnnealingOptimizer::n< / a > < / div > < div class = "ttdeci" > int n< / div > < div class = "ttdoc" > size of the permutation < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8h_source.html#l00097" > PolysemousTraining.h:97< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Score3Computer_html_a07a726903418960a2d8000506d88f8e6" > < div class = "ttname" > < a href = "structfaiss_1_1Score3Computer.html#a07a726903418960a2d8000506d88f8e6" > faiss::Score3Computer::compute< / a > < / div > < div class = "ttdeci" > Taccu compute(const int *perm) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00456" > PolysemousTraining.cpp:456< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a467b451ca203544e42c250e4be65b983" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a467b451ca203544e42c250e4be65b983" > faiss::ProductQuantizer::dsub< / a > < / div > < div class = "ttdeci" > size_t dsub< / div > < div class = "ttdoc" > dimensionality of each subvector < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00032" > ProductQuantizer.h:32< / a > < / div > < / div >
< 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#l00482" > ProductQuantizer.cpp:482< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Score3Computer_html_a98da6005edbb5ec26311bc947866122d" > < div class = "ttname" > < a href = "structfaiss_1_1Score3Computer.html#a98da6005edbb5ec26311bc947866122d" > faiss::Score3Computer::update_j_line< / a > < / div > < div class = "ttdeci" > Taccu update_j_line(const int *perm, int iw, int jw, int ip0, int ip, int jp0, int jp, const Ttab *n_gt_ij) const < / div > < div class = "ttdoc" > compute update on a line of k& #39;s, where i and j are swapped < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00586" > PolysemousTraining.cpp:586< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ReproduceDistancesObjective_html_ac99d739f81e13e841ba7d81d90629aef" > < div class = "ttname" > < a href = "structfaiss_1_1ReproduceDistancesObjective.html#ac99d739f81e13e841ba7d81d90629aef" > faiss::ReproduceDistancesObjective::target_dis< / a > < / div > < div class = "ttdeci" > const double * target_dis< / div > < div class = "ttdoc" > wanted distances (size n^2) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8h_source.html#l00065" > PolysemousTraining.h:65< / a > < / div > < / div >
2018-12-20 00:48:35 +08:00
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_aa61330eadb84772b71018b093773a5f9" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9" > faiss::ProductQuantizer::code_size< / a > < / div > < div class = "ttdeci" > size_t code_size< / div > < div class = "ttdoc" > byte per indexed vector < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00033" > ProductQuantizer.h:33< / a > < / div > < / div >
2019-05-28 22:17:22 +08:00
< div class = "ttc" id = "structfaiss_1_1SimulatedAnnealingOptimizer_html_aa8ff19f97482c6213b2a8ff3b190412b" > < div class = "ttname" > < a href = "structfaiss_1_1SimulatedAnnealingOptimizer.html#aa8ff19f97482c6213b2a8ff3b190412b" > faiss::SimulatedAnnealingOptimizer::init_cost< / a > < / div > < div class = "ttdeci" > double init_cost< / div > < div class = "ttdoc" > remember intial cost of optimization < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8h_source.html#l00105" > PolysemousTraining.h:105< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1RandomGenerator_html_a583f124ecacdbe037ac96e23a44dd420" > < div class = "ttname" > < a href = "structfaiss_1_1RandomGenerator.html#a583f124ecacdbe037ac96e23a44dd420" > faiss::RandomGenerator::rand_int< / a > < / div > < div class = "ttdeci" > int rand_int()< / div > < div class = "ttdoc" > random positive integer < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8cpp_source.html#l00114" > utils.cpp:114< / a > < / div > < / div >
2018-12-20 00:48:35 +08:00
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a0feee45e4151547b7a0444c14bad398f" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a0feee45e4151547b7a0444c14bad398f" > faiss::ProductQuantizer::ksub< / a > < / div > < div class = "ttdeci" > size_t ksub< / div > < div class = "ttdoc" > number of centroids for each subquantizer < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00034" > ProductQuantizer.h:34< / a > < / div > < / div >
2019-05-28 22:17:22 +08:00
< div class = "ttc" id = "structfaiss_1_1PolysemousTraining_html_a0ac61389b6fcc7f98e998d9d0cc2664a" > < div class = "ttname" > < a href = "structfaiss_1_1PolysemousTraining.html#a0ac61389b6fcc7f98e998d9d0cc2664a" > faiss::PolysemousTraining::optimize_ranking< / a > < / div > < div class = "ttdeci" > void optimize_ranking(ProductQuantizer & pq, size_t n, const float *x) const < / div > < div class = "ttdoc" > called by optimize_pq_for_hamming < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00827" > PolysemousTraining.cpp:827< / a > < / div > < / div >
< div class = "ttc" id = "namespacefaiss_html_a3d9c7db82d43c1f0ab1d28b92bc9fe57" > < div class = "ttname" > < a href = "namespacefaiss.html#a3d9c7db82d43c1f0ab1d28b92bc9fe57" > faiss::pairwise_L2sqr< / a > < / div > < div class = "ttdeci" > void pairwise_L2sqr(long d, long nq, const float *xq, long nb, const float *xb, float *dis, long ldq, long ldb, long ldd)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "utils_8cpp_source.html#l01021" > utils.cpp:1021< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Score3Computer_html_a1c4537d67802aef28ccc57c4bd87f766" > < div class = "ttname" > < a href = "structfaiss_1_1Score3Computer.html#a1c4537d67802aef28ccc57c4bd87f766" > faiss::Score3Computer::compute_cost< / a > < / div > < div class = "ttdeci" > double compute_cost(const int *perm) const override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00632" > PolysemousTraining.cpp:632< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Score3Computer_html" > < div class = "ttname" > < a href = "structfaiss_1_1Score3Computer.html" > faiss::Score3Computer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00444" > PolysemousTraining.cpp:444< / 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#l00069" > utils.cpp:69< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ReproduceDistancesObjective_html_a982332b44ff32b9ae9694e374acd0aff" > < div class = "ttname" > < a href = "structfaiss_1_1ReproduceDistancesObjective.html#a982332b44ff32b9ae9694e374acd0aff" > faiss::ReproduceDistancesObjective::weights< / a > < / div > < div class = "ttdeci" > std::vector< double > weights< / div > < div class = "ttdoc" > weights for each distance (size n^2) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8h_source.html#l00066" > PolysemousTraining.h:66< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1RankingScore2_html_a16c753a4136b3c851ea81133a26a02da" > < div class = "ttname" > < a href = "structfaiss_1_1RankingScore2.html#a16c753a4136b3c851ea81133a26a02da" > faiss::RankingScore2::accum_gt_weight_diff< / a > < / div > < div class = "ttdeci" > double accum_gt_weight_diff(const std::vector< int > & a, const std::vector< int > & b)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00683" > PolysemousTraining.cpp:683< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1SimulatedAnnealingParameters_html" > < div class = "ttname" > < a href = "structfaiss_1_1SimulatedAnnealingParameters.html" > faiss::SimulatedAnnealingParameters< / a > < / div > < div class = "ttdoc" > parameters used for the simulated annealing method < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8h_source.html#l00021" > PolysemousTraining.h:21< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndirectSort_html" > < div class = "ttname" > < a href = "structfaiss_1_1IndirectSort.html" > faiss::IndirectSort< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00648" > PolysemousTraining.cpp:648< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Score3Computer_html_acf371848bac76ba275ceb5e10f805d33" > < div class = "ttname" > < a href = "structfaiss_1_1Score3Computer.html#acf371848bac76ba275ceb5e10f805d33" > faiss::Score3Computer::update_i_cross< / a > < / div > < div class = "ttdeci" > Taccu update_i_cross(const int *perm, int iw, int jw, int ip0, int ip, const Ttab *n_gt_i) const < / div > < div class = "ttdoc" > considers the 2 pairs of crossing lines j=iw or jw and k = iw or kw < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00607" > PolysemousTraining.cpp:607< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a83600e328893ce5f41fe459f5a3acf41" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41" > faiss::ProductQuantizer::M< / a > < / div > < div class = "ttdeci" > size_t M< / div > < div class = "ttdoc" > number of subquantizers < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00028" > ProductQuantizer.h:28< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1PolysemousTraining_html_aeb5a523056697934972f95fd428f61efa4f1f59a0027c1662a7aaf66f2a78fb23" > < div class = "ttname" > < a href = "structfaiss_1_1PolysemousTraining.html#aeb5a523056697934972f95fd428f61efa4f1f59a0027c1662a7aaf66f2a78fb23" > faiss::PolysemousTraining::OT_ReproduceDistances_affine< / a > < / div > < div class = "ttdoc" > default < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8h_source.html#l00125" > PolysemousTraining.h:125< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1PermutationObjective_html" > < div class = "ttname" > < a href = "structfaiss_1_1PermutationObjective.html" > faiss::PermutationObjective< / a > < / div > < div class = "ttdoc" > abstract class for the loss function < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8h_source.html#l00040" > PolysemousTraining.h:40< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html" > faiss::ProductQuantizer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00023" > ProductQuantizer.h:23< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1Score3Computer_html_a227601c3dc8779bb13747ba04934e0c8" > < div class = "ttname" > < a href = "structfaiss_1_1Score3Computer.html#a227601c3dc8779bb13747ba04934e0c8" > faiss::Score3Computer::update_k< / a > < / div > < div class = "ttdeci" > Taccu update_k(const int *perm, int iw, int jw, int ip0, int ip, int jp0, int jp, int k, const Ttab *n_gt_ij) const < / div > < div class = "ttdoc" > used for the 8 cells were the 3 indices are swapped < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00567" > PolysemousTraining.cpp:567< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ReproduceDistancesObjective_html_a6681846eb7751b32a907d075fff6770b" > < div class = "ttname" > < a href = "structfaiss_1_1ReproduceDistancesObjective.html#a6681846eb7751b32a907d075fff6770b" > faiss::ReproduceDistancesObjective::source_dis< / a > < / div > < div class = "ttdeci" > std::vector< double > source_dis< / div > < div class = "ttdoc" > & quot;real& quot; corrected distances (size n^2) < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8h_source.html#l00064" > PolysemousTraining.h:64< / a > < / div > < / div >
2018-12-20 00:48:35 +08:00
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a4f0f33c011dffe633a1748a48a082c22" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a4f0f33c011dffe633a1748a48a082c22" > faiss::ProductQuantizer::get_centroids< / a > < / div > < div class = "ttdeci" > float * get_centroids(size_t m, size_t i)< / div > < div class = "ttdoc" > return the centroids associated with subvector m < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00058" > ProductQuantizer.h:58< / a > < / div > < / div >
2019-05-28 22:17:22 +08:00
< div class = "ttc" id = "structfaiss_1_1PolysemousTraining_html_a6989e2b573d4368e7f863edbbb2f00b8" > < div class = "ttname" > < a href = "structfaiss_1_1PolysemousTraining.html#a6989e2b573d4368e7f863edbbb2f00b8" > faiss::PolysemousTraining::optimize_reproduce_distances< / a > < / div > < div class = "ttdeci" > void optimize_reproduce_distances(ProductQuantizer & pq) const < / div > < div class = "ttdoc" > called by optimize_pq_for_hamming < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00764" > PolysemousTraining.cpp:764< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1PolysemousTraining_html_a995374ba2f0bc2738edae72ca9142f82" > < div class = "ttname" > < a href = "structfaiss_1_1PolysemousTraining.html#a995374ba2f0bc2738edae72ca9142f82" > faiss::PolysemousTraining::optimize_pq_for_hamming< / a > < / div > < div class = "ttdeci" > void optimize_pq_for_hamming(ProductQuantizer & pq, size_t n, const float *x) const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00934" > PolysemousTraining.cpp:934< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1ProductQuantizer_html_a567cd512438f9e3404d9339a232d7695" > < div class = "ttname" > < a href = "structfaiss_1_1ProductQuantizer.html#a567cd512438f9e3404d9339a232d7695" > faiss::ProductQuantizer::d< / a > < / div > < div class = "ttdeci" > size_t d< / div > < div class = "ttdoc" > size of the input vectors < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ProductQuantizer_8h_source.html#l00027" > ProductQuantizer.h:27< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1RankingScore2_html" > < div class = "ttname" > < a href = "structfaiss_1_1RankingScore2.html" > faiss::RankingScore2< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8cpp_source.html#l00655" > PolysemousTraining.cpp:655< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1SimulatedAnnealingOptimizer_html" > < div class = "ttname" > < a href = "structfaiss_1_1SimulatedAnnealingOptimizer.html" > faiss::SimulatedAnnealingOptimizer< / a > < / div > < div class = "ttdoc" > Simulated annealing optimization algorithm for permutations. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "PolysemousTraining_8h_source.html#l00094" > PolysemousTraining.h:94< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
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