faiss/docs/html/test__params__override_8cpp...

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<div class="title">test_params_override.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<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>&#160;<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>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &lt;cstdio&gt;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &lt;cstdlib&gt;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &lt;gtest/gtest.h&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#include &lt;faiss/IndexIVF.h&gt;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &lt;faiss/IndexBinaryIVF.h&gt;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &lt;faiss/AutoTune.h&gt;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &lt;faiss/IVFlib.h&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="keyword">using namespace </span>faiss;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="keyword">typedef</span> <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> idx_t;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment">// dimension of the vectors to index</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="keywordtype">int</span> d = 32;</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="comment">// size of the database we plan to index</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keywordtype">size_t</span> nb = 1000;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment">// nb of queries</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="keywordtype">size_t</span> nq = 200;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;std::vector&lt;float&gt; make_data(<span class="keywordtype">size_t</span> n)</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;{</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; std::vector &lt;float&gt; database (n * d);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; n * d; i++) {</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; database[i] = drand48();</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; }</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">return</span> database;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;}</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;std::unique_ptr&lt;Index&gt; make_index(<span class="keyword">const</span> <span class="keywordtype">char</span> *index_type,</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">MetricType</a> metric,</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">const</span> std::vector&lt;float&gt; &amp; x)</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;{</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; std::unique_ptr&lt;Index&gt; index(<a class="code" href="namespacefaiss.html#a0c95ec47726f2ce3fb668dcb1f9a3317">index_factory</a>(d, index_type, metric));</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1IndexShards.html#a36fbcc85eed9bf2ea15587f04be9ae0b">train</a>(nb, x.data());</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1IndexShards.html#a2e06889521c566525011eb46cc97cda6">add</a>(nb, x.data());</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="keywordflow">return</span> index;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;}</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;std::vector&lt;idx_t&gt; search_index(<a class="code" href="structfaiss_1_1Index.html">Index</a> *index, <span class="keyword">const</span> <span class="keywordtype">float</span> *xq) {</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="keywordtype">int</span> k = 10;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; std::vector&lt;idx_t&gt; I(k * nq);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; std::vector&lt;float&gt; D(k * nq);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">search</a> (nq, xq, k, D.data(), I.data());</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">return</span> I;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;}</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;std::vector&lt;idx_t&gt; search_index_with_params(</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <a class="code" href="structfaiss_1_1Index.html">Index</a> *index, <span class="keyword">const</span> <span class="keywordtype">float</span> *xq, <a class="code" href="structfaiss_1_1IVFSearchParameters.html">IVFSearchParameters</a> *params) {</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keywordtype">int</span> k = 10;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; std::vector&lt;idx_t&gt; I(k * nq);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; std::vector&lt;float&gt; D(k * nq);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; ivflib::search_with_parameters (index, nq, xq, k,</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; D.data(), I.data(), params);</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordflow">return</span> I;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;}</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="comment">/*************************************************************</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="comment"> * Test functions for a given index type</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="comment"> *************************************************************/</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="keywordtype">int</span> test_params_override (<span class="keyword">const</span> <span class="keywordtype">char</span> *index_key, <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">MetricType</a> metric) {</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; std::vector&lt;float&gt; xb = make_data(nb); <span class="comment">// database vectors</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keyword">auto</span> index = make_index(index_key, metric, xb);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="comment">//index-&gt;train(nb, xb.data());</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="comment">// index-&gt;add(nb, xb.data());</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; std::vector&lt;float&gt; xq = make_data(nq);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <a class="code" href="structfaiss_1_1ParameterSpace.html">ParameterSpace</a> ps;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; ps.<a class="code" href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">set_index_parameter</a>(index.get(), <span class="stringliteral">&quot;nprobe&quot;</span>, 2);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keyword">auto</span> res2ref = search_index(index.get(), xq.data());</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; ps.<a class="code" href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">set_index_parameter</a>(index.get(), <span class="stringliteral">&quot;nprobe&quot;</span>, 9);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keyword">auto</span> res9ref = search_index(index.get(), xq.data());</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; ps.<a class="code" href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">set_index_parameter</a>(index.get(), <span class="stringliteral">&quot;nprobe&quot;</span>, 1);</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <a class="code" href="structfaiss_1_1IVFSearchParameters.html">IVFSearchParameters</a> params;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; params.<a class="code" href="structfaiss_1_1IVFSearchParameters.html#ac3e01728f6376ad727340525b2138782">max_codes</a> = 0;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; params.<a class="code" href="structfaiss_1_1IVFSearchParameters.html#a1183c0b7d9ffd5154b32765175f2a9cc">nprobe</a> = 2;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keyword">auto</span> res2new = search_index_with_params(index.get(), xq.data(), &amp;params);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; params.<a class="code" href="structfaiss_1_1IVFSearchParameters.html#a1183c0b7d9ffd5154b32765175f2a9cc">nprobe</a> = 9;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keyword">auto</span> res9new = search_index_with_params(index.get(), xq.data(), &amp;params);</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordflow">if</span> (res2ref != res2new)</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="keywordflow">return</span> 2;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keywordflow">if</span> (res9ref != res9new)</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <span class="keywordflow">return</span> 9;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;}</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;} <span class="comment">// namespace</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="comment">/*************************************************************</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="comment"> * Test entry points</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="comment"> *************************************************************/</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;TEST(TPO, IVFFlat) {</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="keywordtype">int</span> err1 = test_params_override (<span class="stringliteral">&quot;IVF32,Flat&quot;</span>, METRIC_L2);</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; EXPECT_EQ(err1, 0);</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="keywordtype">int</span> err2 = test_params_override (<span class="stringliteral">&quot;IVF32,Flat&quot;</span>, METRIC_INNER_PRODUCT);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; EXPECT_EQ(err2, 0);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;}</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;TEST(TPO, IVFPQ) {</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="keywordtype">int</span> err1 = test_params_override (<span class="stringliteral">&quot;IVF32,PQ8np&quot;</span>, METRIC_L2);</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; EXPECT_EQ(err1, 0);</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <span class="keywordtype">int</span> err2 = test_params_override (<span class="stringliteral">&quot;IVF32,PQ8np&quot;</span>, METRIC_INNER_PRODUCT);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; EXPECT_EQ(err2, 0);</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;}</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;TEST(TPO, IVFSQ) {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <span class="keywordtype">int</span> err1 = test_params_override (<span class="stringliteral">&quot;IVF32,SQ8&quot;</span>, METRIC_L2);</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; EXPECT_EQ(err1, 0);</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="keywordtype">int</span> err2 = test_params_override (<span class="stringliteral">&quot;IVF32,SQ8&quot;</span>, METRIC_INNER_PRODUCT);</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; EXPECT_EQ(err2, 0);</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;}</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;TEST(TPO, IVFFlatPP) {</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; <span class="keywordtype">int</span> err1 = test_params_override (<span class="stringliteral">&quot;PCA16,IVF32,SQ8&quot;</span>, METRIC_L2);</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; EXPECT_EQ(err1, 0);</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="keywordtype">int</span> err2 = test_params_override (<span class="stringliteral">&quot;PCA16,IVF32,SQ8&quot;</span>, METRIC_INNER_PRODUCT);</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; EXPECT_EQ(err2, 0);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;}</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="comment">/*************************************************************</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="comment"> * Same for binary indexes</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="comment"> *************************************************************/</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;std::vector&lt;uint8_t&gt; make_data_binary(<span class="keywordtype">size_t</span> n) {</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; std::vector &lt;uint8_t&gt; database (n * d / 8);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; n * d / 8; i++) {</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; database[i] = lrand48();</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; }</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; <span class="keywordflow">return</span> database;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;}</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;std::unique_ptr&lt;IndexBinaryIVF&gt; make_index(<span class="keyword">const</span> <span class="keywordtype">char</span> *index_type,</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; <span class="keyword">const</span> std::vector&lt;uint8_t&gt; &amp; x)</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;{</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; <span class="keyword">auto</span> index = std::unique_ptr&lt;IndexBinaryIVF&gt;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; (<span class="keyword">dynamic_cast&lt;</span><a class="code" href="structfaiss_1_1IndexBinaryIVF.html">IndexBinaryIVF</a>*<span class="keyword">&gt;</span>(index_binary_factory (d, index_type)));</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1Index.html#abf601502bdbfa02b9d7bcd7b3671b71d">train</a>(nb, x.data());</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1Index.html#a1b5e9ac70adbce0897dd6c8276ad96f2">add</a>(nb, x.data());</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <span class="keywordflow">return</span> index;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;}</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;std::vector&lt;idx_t&gt; search_index(<a class="code" href="structfaiss_1_1IndexBinaryIVF.html">IndexBinaryIVF</a> *index, <span class="keyword">const</span> uint8_t *xq) {</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="keywordtype">int</span> k = 10;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; std::vector&lt;idx_t&gt; I(k * nq);</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; std::vector&lt;int32_t&gt; D(k * nq);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1IndexBinaryIVF.html#aeaf24ee802fe8f43879c735c363b6fd5">search</a> (nq, xq, k, D.data(), I.data());</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="keywordflow">return</span> I;</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;}</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;std::vector&lt;idx_t&gt; search_index_with_params(</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; <a class="code" href="structfaiss_1_1IndexBinaryIVF.html">IndexBinaryIVF</a> *index, <span class="keyword">const</span> uint8_t *xq, <a class="code" href="structfaiss_1_1IVFSearchParameters.html">IVFSearchParameters</a> *params) {</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <span class="keywordtype">int</span> k = 10;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; std::vector&lt;idx_t&gt; I(k * nq);</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; std::vector&lt;int32_t&gt; D(k * nq);</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; std::vector&lt;idx_t&gt; Iq(params-&gt;<a class="code" href="structfaiss_1_1IVFSearchParameters.html#a1183c0b7d9ffd5154b32765175f2a9cc">nprobe</a> * nq);</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; std::vector&lt;int32_t&gt; Dq(params-&gt;<a class="code" href="structfaiss_1_1IVFSearchParameters.html#a1183c0b7d9ffd5154b32765175f2a9cc">nprobe</a> * nq);</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1IndexBinaryIVF.html#a5c08ac8e6c1444e61b9f357cfba34e2e">quantizer</a>-&gt;<a class="code" href="structfaiss_1_1IndexBinary.html#a48cdd06037d1fb8ce827e7522ba05fb8">search</a>(nq, xq, params-&gt;<a class="code" href="structfaiss_1_1IVFSearchParameters.html#a1183c0b7d9ffd5154b32765175f2a9cc">nprobe</a>,</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; Dq.data(), Iq.data());</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1IndexBinaryIVF.html#a4f33ec7083279f26c0966c5445ec702d">search_preassigned</a>(nq, xq, k, Iq.data(), Dq.data(),</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; D.data(), I.data(),</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; <span class="keyword">false</span>, params);</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; <span class="keywordflow">return</span> I;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160;}</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160;<span class="keywordtype">int</span> test_params_override_binary (<span class="keyword">const</span> <span class="keywordtype">char</span> *index_key) {</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; std::vector&lt;uint8_t&gt; xb = make_data_binary(nb); <span class="comment">// database vectors</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; <span class="keyword">auto</span> index = make_index (index_key, xb);</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1IndexBinaryIVF.html#a4b4b1ba42e6af7c30ccbaf0fc0f38034">train</a>(nb, xb.data());</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1IndexBinaryIVF.html#aaa0eb1eca49892304ceaa11bd3a5ffa1">add</a>(nb, xb.data());</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; std::vector&lt;uint8_t&gt; xq = make_data_binary(nq);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1IndexBinaryIVF.html#ae9890e0946f3aba99ccad6b637df0c8b">nprobe</a> = 2;</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; <span class="keyword">auto</span> res2ref = search_index(index.get(), xq.data());</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1IndexBinaryIVF.html#ae9890e0946f3aba99ccad6b637df0c8b">nprobe</a> = 9;</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; <span class="keyword">auto</span> res9ref = search_index(index.get(), xq.data());</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; index-&gt;<a class="code" href="structfaiss_1_1IndexBinaryIVF.html#ae9890e0946f3aba99ccad6b637df0c8b">nprobe</a> = 1;</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160;</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; <a class="code" href="structfaiss_1_1IVFSearchParameters.html">IVFSearchParameters</a> params;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; params.<a class="code" href="structfaiss_1_1IVFSearchParameters.html#ac3e01728f6376ad727340525b2138782">max_codes</a> = 0;</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; params.<a class="code" href="structfaiss_1_1IVFSearchParameters.html#a1183c0b7d9ffd5154b32765175f2a9cc">nprobe</a> = 2;</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <span class="keyword">auto</span> res2new = search_index_with_params(index.get(), xq.data(), &amp;params);</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; params.<a class="code" href="structfaiss_1_1IVFSearchParameters.html#a1183c0b7d9ffd5154b32765175f2a9cc">nprobe</a> = 9;</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keyword">auto</span> res9new = search_index_with_params(index.get(), xq.data(), &amp;params);</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; <span class="keywordflow">if</span> (res2ref != res2new)</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; <span class="keywordflow">return</span> 2;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160;</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; <span class="keywordflow">if</span> (res9ref != res9new)</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; <span class="keywordflow">return</span> 9;</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160;</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160;}</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160;</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160;TEST(TPOB, IVF) {</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; <span class="keywordtype">int</span> err1 = test_params_override_binary (<span class="stringliteral">&quot;BIVF32&quot;</span>);</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; EXPECT_EQ(err1, 0);</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160;}</div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a36fbcc85eed9bf2ea15587f04be9ae0b"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a36fbcc85eed9bf2ea15587f04be9ae0b">faiss::IndexShards::train</a></div><div class="ttdeci">void train(idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00399">MetaIndexes.cpp:399</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexBinary_html_a48cdd06037d1fb8ce827e7522ba05fb8"><div class="ttname"><a href="structfaiss_1_1IndexBinary.html#a48cdd06037d1fb8ce827e7522ba05fb8">faiss::IndexBinary::search</a></div><div class="ttdeci">virtual void search(idx_t n, const uint8_t *x, idx_t k, int32_t *distances, idx_t *labels) const =0</div></div>
<div class="ttc" id="structfaiss_1_1IndexBinaryIVF_html_ae9890e0946f3aba99ccad6b637df0c8b"><div class="ttname"><a href="structfaiss_1_1IndexBinaryIVF.html#ae9890e0946f3aba99ccad6b637df0c8b">faiss::IndexBinaryIVF::nprobe</a></div><div class="ttdeci">size_t nprobe</div><div class="ttdoc">number of probes at query time </div><div class="ttdef"><b>Definition:</b> <a href="IndexBinaryIVF_8h_source.html#l00041">IndexBinaryIVF.h:41</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexBinaryIVF_html"><div class="ttname"><a href="structfaiss_1_1IndexBinaryIVF.html">faiss::IndexBinaryIVF</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexBinaryIVF_8h_source.html#l00036">IndexBinaryIVF.h:36</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexBinaryIVF_html_a4f33ec7083279f26c0966c5445ec702d"><div class="ttname"><a href="structfaiss_1_1IndexBinaryIVF.html#a4f33ec7083279f26c0966c5445ec702d">faiss::IndexBinaryIVF::search_preassigned</a></div><div class="ttdeci">void search_preassigned(idx_t n, const uint8_t *x, idx_t k, const idx_t *assign, const int32_t *centroid_dis, int32_t *distances, idx_t *labels, bool store_pairs, const IVFSearchParameters *params=nullptr) const </div><div class="ttdef"><b>Definition:</b> <a href="IndexBinaryIVF_8cpp_source.html#l00662">IndexBinaryIVF.cpp:662</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_abf601502bdbfa02b9d7bcd7b3671b71d"><div class="ttname"><a href="structfaiss_1_1Index.html#abf601502bdbfa02b9d7bcd7b3671b71d">faiss::Index::train</a></div><div class="ttdeci">virtual void train(idx_t n, const float *x)</div><div class="ttdef"><b>Definition:</b> <a href="Index_8cpp_source.html#l00024">Index.cpp:24</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexBinaryIVF_html_a5c08ac8e6c1444e61b9f357cfba34e2e"><div class="ttname"><a href="structfaiss_1_1IndexBinaryIVF.html#a5c08ac8e6c1444e61b9f357cfba34e2e">faiss::IndexBinaryIVF::quantizer</a></div><div class="ttdeci">IndexBinary * quantizer</div><div class="ttdoc">quantizer that maps vectors to inverted lists </div><div class="ttdef"><b>Definition:</b> <a href="IndexBinaryIVF_8h_source.html#l00053">IndexBinaryIVF.h:53</a></div></div>
<div class="ttc" id="structfaiss_1_1IVFSearchParameters_html"><div class="ttname"><a href="structfaiss_1_1IVFSearchParameters.html">faiss::IVFSearchParameters</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00061">IndexIVF.h:61</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexBinaryIVF_html_a4b4b1ba42e6af7c30ccbaf0fc0f38034"><div class="ttname"><a href="structfaiss_1_1IndexBinaryIVF.html#a4b4b1ba42e6af7c30ccbaf0fc0f38034">faiss::IndexBinaryIVF::train</a></div><div class="ttdeci">void train(idx_t n, const uint8_t *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="IndexBinaryIVF_8cpp_source.html#l00250">IndexBinaryIVF.cpp:250</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a1b5e9ac70adbce0897dd6c8276ad96f2"><div class="ttname"><a href="structfaiss_1_1Index.html#a1b5e9ac70adbce0897dd6c8276ad96f2">faiss::Index::add</a></div><div class="ttdeci">virtual void add(idx_t n, const float *x)=0</div></div>
<div class="ttc" id="structfaiss_1_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#l00422">MetaIndexes.cpp:422</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a040c6aed1f224f3ea7bf58eebc0c31a4"><div class="ttname"><a href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a></div><div class="ttdeci">long idx_t</div><div class="ttdoc">all indices are this type </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00064">Index.h:64</a></div></div>
<div class="ttc" id="structfaiss_1_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_1IVFSearchParameters_html_a1183c0b7d9ffd5154b32765175f2a9cc"><div class="ttname"><a href="structfaiss_1_1IVFSearchParameters.html#a1183c0b7d9ffd5154b32765175f2a9cc">faiss::IVFSearchParameters::nprobe</a></div><div class="ttdeci">size_t nprobe</div><div class="ttdoc">number of probes at query time </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00062">IndexIVF.h:62</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexBinaryIVF_html_aaa0eb1eca49892304ceaa11bd3a5ffa1"><div class="ttname"><a href="structfaiss_1_1IndexBinaryIVF.html#aaa0eb1eca49892304ceaa11bd3a5ffa1">faiss::IndexBinaryIVF::add</a></div><div class="ttdeci">void add(idx_t n, const uint8_t *x) override</div><div class="ttdoc">Quantizes x and calls add_with_key. </div><div class="ttdef"><b>Definition:</b> <a href="IndexBinaryIVF_8cpp_source.html#l00057">IndexBinaryIVF.cpp:57</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_ac630c153ffd12f9994452c92fe57dc17"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">faiss::ParameterSpace::set_index_parameter</a></div><div class="ttdeci">virtual void set_index_parameter(Index *index, const std::string &amp;name, double val) const </div><div class="ttdoc">set one of the parameters </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00452">AutoTune.cpp:452</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html">faiss::ParameterSpace</a></div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00132">AutoTune.h:132</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexBinaryIVF_html_aeaf24ee802fe8f43879c735c363b6fd5"><div class="ttname"><a href="structfaiss_1_1IndexBinaryIVF.html#aeaf24ee802fe8f43879c735c363b6fd5">faiss::IndexBinaryIVF::search</a></div><div class="ttdeci">virtual void search(idx_t n, const uint8_t *x, idx_t k, int32_t *distances, idx_t *labels) const override</div><div class="ttdef"><b>Definition:</b> <a href="IndexBinaryIVF_8cpp_source.html#l00128">IndexBinaryIVF.cpp:128</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html"><div class="ttname"><a href="structfaiss_1_1Index.html">faiss::Index</a></div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
<div class="ttc" id="structfaiss_1_1IVFSearchParameters_html_ac3e01728f6376ad727340525b2138782"><div class="ttname"><a href="structfaiss_1_1IVFSearchParameters.html#ac3e01728f6376ad727340525b2138782">faiss::IVFSearchParameters::max_codes</a></div><div class="ttdeci">size_t max_codes</div><div class="ttdoc">max nb of codes to visit to do a query </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00063">IndexIVF.h:63</a></div></div>
<div class="ttc" id="namespacefaiss_html_a0c95ec47726f2ce3fb668dcb1f9a3317"><div class="ttname"><a href="namespacefaiss.html#a0c95ec47726f2ce3fb668dcb1f9a3317">faiss::index_factory</a></div><div class="ttdeci">Index * index_factory(int d, const char *description_in, MetricType metric)</div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00722">AutoTune.cpp:722</a></div></div>
<div class="ttc" id="namespacefaiss_html_afd12191c638da74760ff397cf319752c"><div class="ttname"><a href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a></div><div class="ttdeci">MetricType</div><div class="ttdoc">Some algorithms support both an inner product version and a L2 search version. </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00045">Index.h:45</a></div></div>
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