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0df3f646fc
various bugfixes from github issues kmean with some frozen centroids GPU better tiling for large flat datasets default AVX for vector ops
295 lines
48 KiB
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295 lines
48 KiB
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<div class="title">/data/users/matthijs/github_faiss/faiss/MetaIndexes.h</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) 2015-present, Facebook, Inc.</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * All rights reserved.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
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<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>
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<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>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Copyright 2004-present Facebook. All Rights Reserved.</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// -*- c++ -*-</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#ifndef META_INDEXES_H</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor"></span><span class="preprocessor">#define META_INDEXES_H</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <vector></span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <unordered_map></span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "Index.h"</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>faiss {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/** Index that translates search results to ids */</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap.html"> 26</a></span> <span class="keyword">struct </span><a class="code" href="structfaiss_1_1IndexIDMap.html">IndexIDMap</a> : <a class="code" href="structfaiss_1_1Index.html">Index</a> {</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <a class="code" href="structfaiss_1_1Index.html">Index</a> * index; <span class="comment">///! the sub-index</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap.html#affa8a764304410c96489c2b2e178bcdb"> 28</a></span> <span class="comment"></span> <span class="keywordtype">bool</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#affa8a764304410c96489c2b2e178bcdb">own_fields</a>; <span class="comment">///! whether pointers are deleted in destructo</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b"> 29</a></span> <span class="comment"></span> std::vector<long> <a class="code" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">id_map</a>;</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">explicit</span> <a class="code" href="structfaiss_1_1IndexIDMap.html">IndexIDMap</a> (<a class="code" href="structfaiss_1_1Index.html">Index</a> *index);</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"></span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> /// Same as add_core, but stores xids instead of sequential ids</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> /// @param xids if non-null, ids to store for the vectors (size n)</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#aeace75e53648c052d05c357b744e090b">add_with_ids</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x, <span class="keyword">const</span> <span class="keywordtype">long</span>* xids) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"></span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> /// this will fail. Use add_with_ids</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#a16cce6c1e83d0d5f069c9b0399896450">add</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#a2f36fa9150a465b48952afbba856e2a1">search</a>(</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n,</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> k,</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordtype">float</span>* distances,</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a>* labels) <span class="keyword">const override</span>;</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#ac873cb03aa323a06dca5d6f3af5fe559">train</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#a70aca5b0f665c5a109d5dadf1e13b448">reset</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"></span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> /// remove ids adapted to IndexFlat</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"></span> <span class="keywordtype">long</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#a699ca4891bf3a437b2a182c04d33d9b9">remove_ids</a>(<span class="keyword">const</span> <a class="code" href="structfaiss_1_1IDSelector.html">IDSelector</a>& sel) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#a7dbeaf9d44d6783d371f12405e8b7f40">range_search</a> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span> *x, <span class="keywordtype">float</span> radius,</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="structfaiss_1_1RangeSearchResult.html">RangeSearchResult</a> *result) <span class="keyword">const override</span>;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  ~<a class="code" href="structfaiss_1_1IndexIDMap.html">IndexIDMap</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="structfaiss_1_1IndexIDMap.html">IndexIDMap</a> () {<a class="code" href="structfaiss_1_1IndexIDMap.html#affa8a764304410c96489c2b2e178bcdb">own_fields</a>=<span class="keyword">false</span>; index=<span class="keyword">nullptr</span>; }</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> };</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"></span></div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">/** same as IndexIDMap but also provides an efficient reconstruction</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> implementation via a 2-way index */</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap2.html"> 63</a></span> <span class="keyword">struct </span><a class="code" href="structfaiss_1_1IndexIDMap2.html">IndexIDMap2</a> : <a class="code" href="structfaiss_1_1IndexIDMap.html">IndexIDMap</a> {</div>
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<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>  std::unordered_map<idx_t, idx_t> rev_map;</div>
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<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>  <span class="keyword">explicit</span> <a class="code" href="structfaiss_1_1IndexIDMap2.html">IndexIDMap2</a> (<a class="code" href="structfaiss_1_1Index.html">Index</a> *index);</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"></span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> /// make the rev_map from scratch</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap2.html#a646302669189e370d9d864fc18f096fe">construct_rev_map</a> ();</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap2.html#a33ff76975891695c2fa45ed26fc8eae9">add_with_ids</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x, <span class="keyword">const</span> <span class="keywordtype">long</span>* xids) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordtype">long</span> <a class="code" href="structfaiss_1_1IndexIDMap2.html#a87e313ebc8dd62fb734a61a6d95a98f0">remove_ids</a>(<span class="keyword">const</span> <a class="code" href="structfaiss_1_1IDSelector.html">IDSelector</a>& sel) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap2.html#a3660adb35a3299bc328988f5ff2199fe">reconstruct</a> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> key, <span class="keywordtype">float</span> * recons) <span class="keyword">const override</span>;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  ~<a class="code" href="structfaiss_1_1IndexIDMap2.html">IndexIDMap2</a>()<span class="keyword"> override </span>{}</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <a class="code" href="structfaiss_1_1IndexIDMap2.html">IndexIDMap2</a> () {}</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> };</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"></span></div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">/** Index that concatenates the results from several sub-indexes</span></div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShards.html"> 86</a></span> <span class="keyword">struct </span><a class="code" href="structfaiss_1_1IndexShards.html">IndexShards</a> : <a class="code" href="structfaiss_1_1Index.html">Index</a> {</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  std::vector<Index*> shard_indexes;</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordtype">bool</span> own_fields; <span class="comment">/// should the sub-indexes be deleted along with this?</span></div>
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<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShards.html#a493da171720f2c3f35058f793fb9a6ce"> 90</a></span> <span class="comment"></span> <span class="keywordtype">bool</span> <a class="code" href="structfaiss_1_1IndexShards.html#a493da171720f2c3f35058f793fb9a6ce">threaded</a>;</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordtype">bool</span> successive_ids;</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"></span></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> /**</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> * @param threaded do we use one thread per sub_index or do</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"> * queries sequentially?</span></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> * @param successive_ids should we shift the returned ids by</span></div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> * the size of each sub-index or return them</span></div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> * as they are?</span></div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">explicit</span> <a class="code" href="structfaiss_1_1IndexShards.html#ad987a18a1786919e32cc02ca36e5ab46">IndexShards</a> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, <span class="keywordtype">bool</span> <a class="code" href="structfaiss_1_1IndexShards.html#a493da171720f2c3f35058f793fb9a6ce">threaded</a> = <span class="keyword">false</span>,</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">bool</span> successive_ids = <span class="keyword">true</span>);</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordtype">void</span> add_shard (<a class="code" href="structfaiss_1_1Index.html">Index</a> *);</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">// update metric_type and ntotal. Call if you changes something in</span></div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="comment">// the shard indexes.</span></div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordtype">void</span> sync_with_shard_indexes ();</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <a class="code" href="structfaiss_1_1Index.html">Index</a> *at(<span class="keywordtype">int</span> i) {<span class="keywordflow">return</span> shard_indexes[i]; }</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"></span></div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> /// supported only for sub-indices that implement add_with_ids</span></div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexShards.html#a2e06889521c566525011eb46cc97cda6">add</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">add_with_ids</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x, <span class="keyword">const</span> <span class="keywordtype">long</span>* xids) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexShards.html#a83391295650370e8987358a898bb2cca">search</a>(</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n,</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> k,</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordtype">float</span>* distances,</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a>* labels) <span class="keyword">const override</span>;</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexShards.html#a36fbcc85eed9bf2ea15587f04be9ae0b">train</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexShards.html#aa7dc5d020de4a0552058cbf2844cb00f">reset</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  ~<a class="code" href="structfaiss_1_1IndexShards.html">IndexShards</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> };</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"></span></div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment">/** splits input vectors in segments and assigns each segment to a sub-index</span></div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> * used to distribute a MultiIndexQuantizer</span></div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div>
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<div class="line"><a name="l00134"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexSplitVectors.html"> 134</a></span> <span class="keyword">struct </span><a class="code" href="structfaiss_1_1IndexSplitVectors.html">IndexSplitVectors</a>: <a class="code" href="structfaiss_1_1Index.html">Index</a> {</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordtype">bool</span> own_fields;</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordtype">bool</span> threaded;</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  std::vector<Index*> sub_indexes;</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> sum_d; <span class="comment">/// sum of dimensions seen so far</span></div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"></span></div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keyword">explicit</span> <a class="code" href="structfaiss_1_1IndexSplitVectors.html#a70ba3367a08722fe4466dc49c21a4d2b">IndexSplitVectors</a> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, <span class="keywordtype">bool</span> threaded = <span class="keyword">false</span>);</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordtype">void</span> add_sub_index (<a class="code" href="structfaiss_1_1Index.html">Index</a> *);</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordtype">void</span> sync_with_sub_indexes ();</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexSplitVectors.html#af2ef88dc72b4a94f1190ecc8cb25881b">add</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexSplitVectors.html#a4a010daf51e44d9717e94400cc23c159">search</a>(</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n,</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> k,</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordtype">float</span>* distances,</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a>* labels) <span class="keyword">const override</span>;</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexSplitVectors.html#aafa4c780e325855fe247052453967845">train</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexSplitVectors.html#a8047981cb8d10c54107664c4955df402">reset</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  ~<a class="code" href="structfaiss_1_1IndexSplitVectors.html">IndexSplitVectors</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> };</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> }</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="preprocessor">#endif</span></div>
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<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#l00397">MetaIndexes.cpp:397</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap2_html"><div class="ttname"><a href="structfaiss_1_1IndexIDMap2.html">faiss::IndexIDMap2</a></div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00063">MetaIndexes.h:63</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexShards_html_ad987a18a1786919e32cc02ca36e5ab46"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#ad987a18a1786919e32cc02ca36e5ab46">faiss::IndexShards::IndexShards</a></div><div class="ttdeci">IndexShards(idx_t d, bool threaded=false, bool successive_ids=true)</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00367">MetaIndexes.cpp:367</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap_html_a2f36fa9150a465b48952afbba856e2a1"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#a2f36fa9150a465b48952afbba856e2a1">faiss::IndexIDMap::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#l00069">MetaIndexes.cpp:69</a></div></div>
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<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#l00437">MetaIndexes.cpp:437</a></div></div>
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<div class="ttc" id="structfaiss_1_1IDSelector_html"><div class="ttname"><a href="structfaiss_1_1IDSelector.html">faiss::IDSelector</a></div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures_8h_source.html#l00052">AuxIndexStructures.h:52</a></div></div>
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<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#l00498">MetaIndexes.cpp:498</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap2_html_a33ff76975891695c2fa45ed26fc8eae9"><div class="ttname"><a href="structfaiss_1_1IndexIDMap2.html#a33ff76975891695c2fa45ed26fc8eae9">faiss::IndexIDMap2::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#l00142">MetaIndexes.cpp:142</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap_html"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html">faiss::IndexIDMap</a></div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00026">MetaIndexes.h:26</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html_a8047981cb8d10c54107664c4955df402"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html#a8047981cb8d10c54107664c4955df402">faiss::IndexSplitVectors::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">removes all elements from the database. </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00727">MetaIndexes.cpp:727</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap_html_a16cce6c1e83d0d5f069c9b0399896450"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#a16cce6c1e83d0d5f069c9b0399896450">faiss::IndexIDMap::add</a></div><div class="ttdeci">void add(idx_t n, const float *x) override</div><div class="ttdoc">this will fail. Use add_with_ids </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00040">MetaIndexes.cpp:40</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html">faiss::IndexSplitVectors</a></div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00134">MetaIndexes.h:134</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_a2a002388d2c081c2dbab8508dcefe73d"><div class="ttname"><a href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">faiss::Index::d</a></div><div class="ttdeci">int d</div><div class="ttdoc">vector dimension </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00064">Index.h:64</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap_html_ad1cc5658f1879f6a2b00d76cca58cf3b"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">faiss::IndexIDMap::id_map</a></div><div class="ttdeci">std::vector< long > id_map</div><div class="ttdoc">! whether pointers are deleted in destructo </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00029">MetaIndexes.h:29</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap_html_a7dbeaf9d44d6783d371f12405e8b7f40"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#a7dbeaf9d44d6783d371f12405e8b7f40">faiss::IndexIDMap::range_search</a></div><div class="ttdeci">void range_search(idx_t n, const float *x, float radius, RangeSearchResult *result) const override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00080">MetaIndexes.cpp:80</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html_aafa4c780e325855fe247052453967845"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html#aafa4c780e325855fe247052453967845">faiss::IndexSplitVectors::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#l00723">MetaIndexes.cpp:723</a></div></div>
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<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>
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<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>
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<div class="ttc" id="structfaiss_1_1IndexIDMap2_html_a646302669189e370d9d864fc18f096fe"><div class="ttname"><a href="structfaiss_1_1IndexIDMap2.html#a646302669189e370d9d864fc18f096fe">faiss::IndexIDMap2::construct_rev_map</a></div><div class="ttdeci">void construct_rev_map()</div><div class="ttdoc">make the rev_map from scratch </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00151">MetaIndexes.cpp:151</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html_af2ef88dc72b4a94f1190ecc8cb25881b"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html#af2ef88dc72b4a94f1190ecc8cb25881b">faiss::IndexSplitVectors::add</a></div><div class="ttdeci">void add(idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00622">MetaIndexes.cpp:622</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap2_html_a87e313ebc8dd62fb734a61a6d95a98f0"><div class="ttname"><a href="structfaiss_1_1IndexIDMap2.html#a87e313ebc8dd62fb734a61a6d95a98f0">faiss::IndexIDMap2::remove_ids</a></div><div class="ttdeci">long remove_ids(const IDSelector &sel) override</div><div class="ttdoc">remove ids adapted to IndexFlat </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00160">MetaIndexes.cpp:160</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexShards_html_a493da171720f2c3f35058f793fb9a6ce"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a493da171720f2c3f35058f793fb9a6ce">faiss::IndexShards::threaded</a></div><div class="ttdeci">bool threaded</div><div class="ttdoc">should the sub-indexes be deleted along with this? </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00090">MetaIndexes.h:90</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexShards_html_aa7dc5d020de4a0552058cbf2844cb00f"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#aa7dc5d020de4a0552058cbf2844cb00f">faiss::IndexShards::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">removes all elements from the database. </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00490">MetaIndexes.cpp:490</a></div></div>
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<div class="ttc" id="structfaiss_1_1RangeSearchResult_html"><div class="ttname"><a href="structfaiss_1_1RangeSearchResult.html">faiss::RangeSearchResult</a></div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures_8h_source.html#l00029">AuxIndexStructures.h:29</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap_html_a70aca5b0f665c5a109d5dadf1e13b448"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#a70aca5b0f665c5a109d5dadf1e13b448">faiss::IndexIDMap::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">removes all elements from the database. </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00053">MetaIndexes.cpp:53</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html_a4a010daf51e44d9717e94400cc23c159"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html#a4a010daf51e44d9717e94400cc23c159">faiss::IndexSplitVectors::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#l00666">MetaIndexes.cpp:666</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap_html_a699ca4891bf3a437b2a182c04d33d9b9"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#a699ca4891bf3a437b2a182c04d33d9b9">faiss::IndexIDMap::remove_ids</a></div><div class="ttdeci">long remove_ids(const IDSelector &sel) override</div><div class="ttdoc">remove ids adapted to IndexFlat </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00106">MetaIndexes.cpp:106</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap2_html_a3660adb35a3299bc328988f5ff2199fe"><div class="ttname"><a href="structfaiss_1_1IndexIDMap2.html#a3660adb35a3299bc328988f5ff2199fe">faiss::IndexIDMap2::reconstruct</a></div><div class="ttdeci">void reconstruct(idx_t key, float *recons) const override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00168">MetaIndexes.cpp:168</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap_html_ac873cb03aa323a06dca5d6f3af5fe559"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#ac873cb03aa323a06dca5d6f3af5fe559">faiss::IndexIDMap::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#l00047">MetaIndexes.cpp:47</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html"><div class="ttname"><a href="structfaiss_1_1Index.html">faiss::Index</a></div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00060">Index.h:60</a></div></div>
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<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>
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<div class="ttc" id="structfaiss_1_1IndexIDMap_html_aeace75e53648c052d05c357b744e090b"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#aeace75e53648c052d05c357b744e090b">faiss::IndexIDMap::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#l00060">MetaIndexes.cpp:60</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html_a70ba3367a08722fe4466dc49c21a4d2b"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html#a70ba3367a08722fe4466dc49c21a4d2b">faiss::IndexSplitVectors::IndexSplitVectors</a></div><div class="ttdeci">IndexSplitVectors(idx_t d, bool threaded=false)</div><div class="ttdoc">sum of dimensions seen so far </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00592">MetaIndexes.cpp:592</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIDMap_html_affa8a764304410c96489c2b2e178bcdb"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#affa8a764304410c96489c2b2e178bcdb">faiss::IndexIDMap::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="MetaIndexes_8h_source.html#l00028">MetaIndexes.h:28</a></div></div>
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