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<li class="navelem"><a class="el" href="dir_59425e443f801f1f2fd8bbe4959a3ccf.html">tests</a></li> </ul>
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<div class="title">test_merge.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * This source code is licensed under the BSD+Patents license found in the</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <cstdio></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <cstdlib></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 <gtest/gtest.h></span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <faiss/IndexIVFFlat.h></span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <faiss/IndexIVFPQ.h></span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <faiss/IndexFlat.h></span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <faiss/MetaIndexes.h></span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <faiss/FaissAssert.h></span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <faiss/VectorTransform.h></span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <faiss/OnDiskInvertedLists.h></span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>faiss {</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// Main function to test</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// Merge index1 into index0. Works on IndexIVF's and IndexIVF's</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// embedded in a IndexPreTransform</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keywordtype">void</span> merge_into(Index *index0, Index *index1, <span class="keywordtype">bool</span> shift_ids) {</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  FAISS_THROW_IF_NOT (index0->d == index1->d);</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  IndexIVF *ivf0 = <span class="keyword">dynamic_cast<</span>IndexIVF *<span class="keyword">></span>(index0);</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  IndexIVF *ivf1 = <span class="keyword">dynamic_cast<</span>IndexIVF *<span class="keyword">></span>(index1);</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordflow">if</span> (!ivf0) {</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  IndexPreTransform *pt0 = <span class="keyword">dynamic_cast<</span>IndexPreTransform *<span class="keyword">></span>(index0);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  IndexPreTransform *pt1 = <span class="keyword">dynamic_cast<</span>IndexPreTransform *<span class="keyword">></span>(index1);</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="comment">// minimal sanity check</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  FAISS_THROW_IF_NOT (pt0 && pt1);</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  FAISS_THROW_IF_NOT (pt0->chain.size() == pt1->chain.size());</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < pt0->chain.size(); i++) {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  FAISS_THROW_IF_NOT (<span class="keyword">typeid</span>(pt0->chain[i]) == <span class="keyword">typeid</span>(pt1->chain[i]));</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  }</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  ivf0 = <span class="keyword">dynamic_cast<</span>IndexIVF *<span class="keyword">></span>(pt0->index);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  ivf1 = <span class="keyword">dynamic_cast<</span>IndexIVF *<span class="keyword">></span>(pt1->index);</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  }</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  FAISS_THROW_IF_NOT (ivf0);</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  FAISS_THROW_IF_NOT (ivf1);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  ivf0->merge_from (*ivf1, shift_ids ? ivf0->ntotal : 0);</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>  <span class="comment">// useful for IndexPreTransform</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  index0->ntotal = ivf0->ntotal;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  index1->ntotal = ivf1->ntotal;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> }</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </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> </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="structTempfilename.html"> 63</a></span> <span class="keyword">struct </span><a class="code" href="structTempfilename.html">Tempfilename</a> {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">static</span> pthread_mutex_t mutex;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  std::string filename;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <a class="code" href="structTempfilename.html">Tempfilename</a> (<span class="keyword">const</span> <span class="keywordtype">char</span> *prefix = <span class="keyword">nullptr</span>) {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  pthread_mutex_lock (&mutex);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  filename = tempnam (<span class="keyword">nullptr</span>, prefix);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  pthread_mutex_unlock (&mutex);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  ~<a class="code" href="structTempfilename.html">Tempfilename</a> () {</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">if</span> (access (filename.c_str(), F_OK)) {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  unlink (filename.c_str());</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  }</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *c_str() {</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">return</span> filename.c_str();</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> };</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> pthread_mutex_t Tempfilename::mutex = PTHREAD_MUTEX_INITIALIZER;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </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">// parameters to use for the test</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="keywordtype">int</span> d = 64;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keywordtype">size_t</span> nb = 1000;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="keywordtype">size_t</span> nq = 100;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="keywordtype">int</span> nindex = 4;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="keywordtype">int</span> k = 10;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keywordtype">int</span> nlist = 40;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">typedef</span> <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> idx_t;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="structCommonData.html"> 100</a></span> <span class="keyword">struct </span><a class="code" href="structCommonData.html">CommonData</a> {</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  std::vector <float> database;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  std::vector <float> queries;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  std::vector<idx_t> ids;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <a class="code" href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a> quantizer;</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>  <a class="code" href="structCommonData.html">CommonData</a>(): database (nb * d), queries (nq * d), ids(nb), quantizer (d) {</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < nb * d; i++) {</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  database[i] = drand48();</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">for</span> (<span class="keywordtype">size_t</span> i = 0; i < nq * d; i++) {</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  queries[i] = drand48();</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="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < nb; i++) {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  ids[i] = 123 + 456 * i;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  { <span class="comment">// just to train the quantizer</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> iflat (&quantizer, d, nlist);</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  iflat.<a class="code" href="structfaiss_1_1IndexIVF.html#a7a1d5eec194db0977b2318c6ed6a2b86">train</a>(nb, database.data());</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  }</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> };</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <a class="code" href="structCommonData.html">CommonData</a> cd;</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"></span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment">/// perform a search on shards, then merge and search again and</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment">/// compare results.</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"></span><span class="keywordtype">int</span> compare_merged (<a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> *index_shards, <span class="keywordtype">bool</span> shift_ids,</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordtype">bool</span> standard_merge = <span class="keyword">true</span>)</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  std::vector<idx_t> refI(k * nq);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  std::vector<float> refD(k * nq);</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  index_shards-><a class="code" href="structfaiss_1_1IndexShards.html#a83391295650370e8987358a898bb2cca">search</a>(nq, cd.queries.data(), k, refD.data(), refI.data());</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <a class="code" href="structTempfilename.html">Tempfilename</a> filename;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  std::vector<idx_t> newI(k * nq);</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  std::vector<float> newD(k * nq);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> (standard_merge) {</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i < nindex; i++) {</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  merge_into(index_shards->at(0), index_shards->at(i), shift_ids);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  }</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  index_shards->sync_with_shard_indexes();</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  std::vector<const faiss::InvertedLists *> lists;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <a class="code" href="structfaiss_1_1IndexIVF.html">faiss::IndexIVF</a> *index0 = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordtype">size_t</span> ntotal = 0;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < nindex; i++) {</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">auto</span> index_ivf = <span class="keyword">dynamic_cast<</span><a class="code" href="structfaiss_1_1IndexIVF.html">faiss::IndexIVF</a>*<span class="keyword">></span>(index_shards->at(i));</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  assert (index_ivf);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">if</span> (i == 0) {</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  index0 = index_ivf;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  lists.push_back (index_ivf->invlists);</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  ntotal += index_ivf-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  }</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">auto</span> il = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1OnDiskInvertedLists.html">faiss::OnDiskInvertedLists</a>(</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  index0-><a class="code" href="structfaiss_1_1Level1Quantizer.html#a1c4fc9d874d9492ee0ea27a5be388fa7">nlist</a>, index0-><a class="code" href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">code_size</a>,</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  filename.c_str());</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  il->merge_from(lists.data(), lists.size());</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  index0->replace_invlists(il, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  index0-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = ntotal;</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>  <span class="comment">// search only on first index</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  index_shards->at(0)-><a class="code" href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">search</a>(nq, cd.queries.data(),</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  k, newD.data(), newI.data());</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordtype">size_t</span> ndiff = 0;</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < k * nq; i++) {</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">if</span> (refI[i] != newI[i]) {</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  ndiff ++;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  }</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">return</span> ndiff;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> }</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment">// test on IVFFlat with implicit numbering</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> TEST(MERGE, merge_flat_no_ids) {</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> index_shards(d);</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  index_shards.own_fields = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < nindex; i++) {</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  index_shards.add_shard (</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> (&cd.quantizer, d, nlist));</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  }</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  EXPECT_TRUE(index_shards.<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  index_shards.<a class="code" href="structfaiss_1_1IndexShards.html#a2e06889521c566525011eb46cc97cda6">add</a>(nb, cd.database.data());</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordtype">size_t</span> prev_ntotal = index_shards.<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordtype">int</span> ndiff = compare_merged(&index_shards, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  EXPECT_EQ (prev_ntotal, index_shards.<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>);</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  EXPECT_EQ(0, ndiff);</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> }</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="comment">// test on IVFFlat, explicit ids</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> TEST(MERGE, merge_flat) {</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> index_shards(d, <span class="keyword">false</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  index_shards.own_fields = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < nindex; i++) {</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  index_shards.add_shard (</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> (&cd.quantizer, d, nlist));</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  }</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  EXPECT_TRUE(index_shards.<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  index_shards.<a class="code" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">add_with_ids</a>(nb, cd.database.data(), cd.ids.data());</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordtype">int</span> ndiff = compare_merged(&index_shards, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  EXPECT_GE(0, ndiff);</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> }</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment">// test on IVFFlat and a VectorTransform</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> TEST(MERGE, merge_flat_vt) {</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> index_shards(d, <span class="keyword">false</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  index_shards.own_fields = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="comment">// here we have to retrain because of the vectorTransform</span></div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <a class="code" href="structfaiss_1_1RandomRotationMatrix.html">faiss::RandomRotationMatrix</a> rot(d, d);</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  rot.init(1234);</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <a class="code" href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a> quantizer (d);</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  { <span class="comment">// just to train the quantizer</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> iflat (&quantizer, d, nlist);</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <a class="code" href="structfaiss_1_1IndexPreTransform.html">faiss::IndexPreTransform</a> ipt (&rot, &iflat);</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  ipt.train(nb, cd.database.data());</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  }</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> </div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < nindex; i++) {</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <a class="code" href="structfaiss_1_1IndexPreTransform.html">faiss::IndexPreTransform</a> * ipt = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexPreTransform.html">faiss::IndexPreTransform</a> (</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keyword">new</span> <a class="code" href="structfaiss_1_1RandomRotationMatrix.html">faiss::RandomRotationMatrix</a> (rot),</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> (&quantizer, d, nlist)</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  );</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  ipt-><a class="code" href="structfaiss_1_1IndexPreTransform.html#ae5ec3f184eb211e7d6e204082b52c8c0">own_fields</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  index_shards.add_shard (ipt);</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>  EXPECT_TRUE(index_shards.<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  index_shards.<a class="code" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">add_with_ids</a>(nb, cd.database.data(), cd.ids.data());</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordtype">size_t</span> prev_ntotal = index_shards.<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordtype">int</span> ndiff = compare_merged(&index_shards, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  EXPECT_EQ (prev_ntotal, index_shards.<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>);</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  EXPECT_GE(0, ndiff);</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="comment">// put the merged invfile on disk</span></div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> TEST(MERGE, merge_flat_ondisk) {</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> index_shards(d, <span class="keyword">false</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  index_shards.own_fields = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <a class="code" href="structTempfilename.html">Tempfilename</a> filename;</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < nindex; i++) {</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keyword">auto</span> ivf = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> (&cd.quantizer, d, nlist);</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">if</span> (i == 0) {</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keyword">auto</span> il = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1OnDiskInvertedLists.html">faiss::OnDiskInvertedLists</a> (</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  ivf->nlist, ivf->code_size,</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  filename.c_str());</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  ivf->replace_invlists(il, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  }</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  index_shards.add_shard (ivf);</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  }</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  EXPECT_TRUE(index_shards.<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  index_shards.<a class="code" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">add_with_ids</a>(nb, cd.database.data(), cd.ids.data());</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordtype">int</span> ndiff = compare_merged(&index_shards, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  EXPECT_EQ(ndiff, 0);</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> }</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="comment">// non use ondisk specific merge</span></div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> TEST(MERGE, merge_flat_ondisk_2) {</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> index_shards(d, <span class="keyword">false</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  index_shards.own_fields = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> </div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < nindex; i++) {</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  index_shards.add_shard (</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> (&cd.quantizer, d, nlist));</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  }</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  EXPECT_TRUE(index_shards.<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  index_shards.<a class="code" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">add_with_ids</a>(nb, cd.database.data(), cd.ids.data());</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordtype">int</span> ndiff = compare_merged(&index_shards, <span class="keyword">false</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  EXPECT_GE(0, ndiff);</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> }</div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html">faiss::IndexIVF</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00166">IndexIVF.h:166</a></div></div>
<div class="ttc" id="structfaiss_1_1RandomRotationMatrix_html"><div class="ttname"><a href="structfaiss_1_1RandomRotationMatrix.html">faiss::RandomRotationMatrix</a></div><div class="ttdoc">Randomly rotate a set of vectors. </div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00117">VectorTransform.h:117</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a1f771d50133494f682f05c9ab9e39ad9"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">faiss::IndexShards::add_with_ids</a></div><div class="ttdeci">void add_with_ids(idx_t n, const float *x, const long *xids) override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00426">MetaIndexes.cpp:426</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexFlatL2_html"><div class="ttname"><a href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00079">IndexFlat.h:79</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a83391295650370e8987358a898bb2cca"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a83391295650370e8987358a898bb2cca">faiss::IndexShards::search</a></div><div class="ttdeci">void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00487">MetaIndexes.cpp:487</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexPreTransform_html"><div class="ttname"><a href="structfaiss_1_1IndexPreTransform.html">faiss::IndexPreTransform</a></div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00251">VectorTransform.h:251</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8h_source.html#l00025">IndexIVFFlat.h:25</a></div></div>
<div class="ttc" id="structTempfilename_html"><div class="ttname"><a href="structTempfilename.html">Tempfilename</a></div><div class="ttdef"><b>Definition:</b> <a href="test__merge_8cpp_source.html#l00063">test_merge.cpp:63</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_a7a1d5eec194db0977b2318c6ed6a2b86"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a7a1d5eec194db0977b2318c6ed6a2b86">faiss::IndexIVF::train</a></div><div class="ttdeci">void train(idx_t n, const float *x) override</div><div class="ttdoc">Trains the quantizer and calls train_residual to train sub-quantizers. </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8cpp_source.html#l00424">IndexIVF.cpp:424</a></div></div>
<div class="ttc" id="structCommonData_html"><div class="ttname"><a href="structCommonData.html">CommonData</a></div><div class="ttdef"><b>Definition:</b> <a href="test__merge_8cpp_source.html#l00100">test_merge.cpp:100</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a2e06889521c566525011eb46cc97cda6"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a2e06889521c566525011eb46cc97cda6">faiss::IndexShards::add</a></div><div class="ttdeci">void add(idx_t n, const float *x) override</div><div class="ttdoc">supported only for sub-indices that implement add_with_ids </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00420">MetaIndexes.cpp:420</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a040c6aed1f224f3ea7bf58eebc0c31a4"><div class="ttname"><a href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a></div><div class="ttdeci">long idx_t</div><div class="ttdoc">all indices are this type </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a6970683faa021b7a6f1a0865c0d4eccd"><div class="ttname"><a href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">faiss::Index::ntotal</a></div><div class="ttdeci">idx_t ntotal</div><div class="ttdoc">total nb of indexed vectors </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00065">Index.h:65</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_aced51b1ebc33c47ab3ae15ea906559a7"><div class="ttname"><a href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">faiss::Index::search</a></div><div class="ttdeci">virtual void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const =0</div></div>
<div class="ttc" id="structfaiss_1_1IndexPreTransform_html_ae5ec3f184eb211e7d6e204082b52c8c0"><div class="ttname"><a href="structfaiss_1_1IndexPreTransform.html#ae5ec3f184eb211e7d6e204082b52c8c0">faiss::IndexPreTransform::own_fields</a></div><div class="ttdeci">bool own_fields</div><div class="ttdoc">! the sub-index </div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00256">VectorTransform.h:256</a></div></div>
<div class="ttc" id="structfaiss_1_1OnDiskInvertedLists_html"><div class="ttname"><a href="structfaiss_1_1OnDiskInvertedLists.html">faiss::OnDiskInvertedLists</a></div><div class="ttdef"><b>Definition:</b> <a href="OnDiskInvertedLists_8h_source.html#l00052">OnDiskInvertedLists.h:52</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html"><div class="ttname"><a href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a></div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00086">MetaIndexes.h:86</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a6e92732617c4dbe364e7678dd8773a7f"><div class="ttname"><a href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">faiss::Index::is_trained</a></div><div class="ttdeci">bool is_trained</div><div class="ttdoc">set if the Index does not require training, or if training is done already </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00069">Index.h:69</a></div></div>
<div class="ttc" id="structfaiss_1_1Level1Quantizer_html_a1c4fc9d874d9492ee0ea27a5be388fa7"><div class="ttname"><a href="structfaiss_1_1Level1Quantizer.html#a1c4fc9d874d9492ee0ea27a5be388fa7">faiss::Level1Quantizer::nlist</a></div><div class="ttdeci">size_t nlist</div><div class="ttdoc">number of possible key values </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00034">IndexIVF.h:34</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_a46d1aeddb60643c5b3f096147c3e028f"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">faiss::IndexIVF::code_size</a></div><div class="ttdeci">size_t code_size</div><div class="ttdoc">code size per vector in bytes </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00171">IndexIVF.h:171</a></div></div>
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