368 lines
45 KiB
HTML
368 lines
45 KiB
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<li class="navelem"><a class="el" href="dir_59425e443f801f1f2fd8bbe4959a3ccf.html">tests</a></li> </ul>
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<div class="title">demo_sift1M.cpp</div> </div>
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<div class="contents">
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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">/**</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * All rights reserved.</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This source code is licensed under the CC-by-NC license found in the</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</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="l00008"></a><span class="lineno"> 8</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  <span class="comment">// Copyright 2004-present Facebook. All Rights Reserved</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> </div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <cmath></span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <cstdio></span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <cstdlib></span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <cassert></span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <cstring></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> <span class="preprocessor">#include <sys/types.h></span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <sys/stat.h></span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <unistd.h></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="preprocessor">#include <sys/time.h></span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "../AutoTune.h"</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"></span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">/**</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * To run this demo, please download the ANN_SIFT1M dataset from</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * http://corpus-texmex.irisa.fr/</span></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"> * and unzip it to the sudirectory sift1M.</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> **/</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</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"> * I/O functions for fvecs and ivecs</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> *****************************************************/</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> </div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keywordtype">float</span> * fvecs_read (<span class="keyword">const</span> <span class="keywordtype">char</span> *fname,</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordtype">size_t</span> *d_out, <span class="keywordtype">size_t</span> *n_out)</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> {</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  FILE *f = fopen(fname, <span class="stringliteral">"r"</span>);</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">if</span>(!f) {</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  fprintf(stderr, <span class="stringliteral">"could not open %s\n"</span>, fname);</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  perror(<span class="stringliteral">""</span>);</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  abort();</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  }</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">int</span> d;</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  fread(&d, 1, <span class="keyword">sizeof</span>(<span class="keywordtype">int</span>), f);</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  assert((d > 0 && d < 1000000) || !<span class="stringliteral">"unreasonable dimension"</span>);</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  fseek(f, 0, SEEK_SET);</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">struct </span>stat st;</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  fstat(fileno(f), &st);</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">size_t</span> sz = st.st_size;</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  assert(sz % ((d + 1) * 4) == 0 || !<span class="stringliteral">"weird file size"</span>);</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordtype">size_t</span> n = sz / ((d + 1) * 4);</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>  *d_out = d; *n_out = n;</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordtype">float</span> *x = <span class="keyword">new</span> <span class="keywordtype">float</span>[n * (d + 1)];</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">size_t</span> nr = fread(x, <span class="keyword">sizeof</span>(<span class="keywordtype">float</span>), n * (d + 1), f);</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  assert(nr == n * (d + 1) || !<span class="stringliteral">"could not read whole file"</span>);</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>  <span class="comment">// shift array to remove row headers</span></div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> i = 0; i < n; i++)</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  memmove(x + i * d, x + 1 + i * (d + 1), d * <span class="keyword">sizeof</span>(*x));</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  fclose(f);</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> x;</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> </div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment">// not very clean, but works as long as sizeof(int) == sizeof(float)</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keywordtype">int</span> *ivecs_read(<span class="keyword">const</span> <span class="keywordtype">char</span> *fname, <span class="keywordtype">size_t</span> *d_out, <span class="keywordtype">size_t</span> *n_out)</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="keywordflow">return</span> (<span class="keywordtype">int</span>*)fvecs_read(fname, d_out, n_out);</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> </div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="keywordtype">double</span> elapsed ()</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>  <span class="keyword">struct </span>timeval tv;</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  gettimeofday (&tv, <span class="keyword">nullptr</span>);</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> tv.tv_sec + tv.tv_usec * 1e-6;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> }</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </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> <span class="keywordtype">int</span> main()</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> {</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordtype">double</span> t0 = elapsed();</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">// this is typically the fastest one.</span></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *index_key = <span class="stringliteral">"IVF4096,Flat"</span>;</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// these ones have better memory usage</span></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="comment">// const char *index_key = "Flat";</span></div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// const char *index_key = "PQ32";</span></div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="comment">// const char *index_key = "PCA80,Flat";</span></div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// const char *index_key = "IVF4096,PQ8+16";</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">// const char *index_key = "IVF4096,PQ32";</span></div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// const char *index_key = "IMI2x8,PQ32";</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">// const char *index_key = "IMI2x8,PQ8+16";</span></div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// const char *index_key = "OPQ16_64,IMI2x8,PQ8+16";</span></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>  <a class="code" href="structfaiss_1_1Index.html">faiss::Index</a> * index;</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordtype">size_t</span> d;</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>  {</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  printf (<span class="stringliteral">"[%.3f s] Loading train set\n"</span>, elapsed() - t0);</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordtype">size_t</span> nt;</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">float</span> *xt = fvecs_read(<span class="stringliteral">"sift1M/sift_learn.fvecs"</span>, &d, &nt);</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  printf (<span class="stringliteral">"[%.3f s] Preparing index \"%s\" d=%ld\n"</span>,</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  elapsed() - t0, index_key, d);</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  index = <a class="code" href="namespacefaiss.html#a0c95ec47726f2ce3fb668dcb1f9a3317">faiss::index_factory</a>(d, index_key);</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  printf (<span class="stringliteral">"[%.3f s] Training on %ld vectors\n"</span>, elapsed() - t0, nt);</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  index-><a class="code" href="structfaiss_1_1Index.html#a8f67dfd73993e192dc78f2c93d9d9532">train</a>(nt, xt);</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keyword">delete</span> [] xt;</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</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> </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>  printf (<span class="stringliteral">"[%.3f s] Loading database\n"</span>, elapsed() - t0);</div>
|
|
<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="keywordtype">size_t</span> nb, d2;</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordtype">float</span> *xb = fvecs_read(<span class="stringliteral">"sift1M/sift_base.fvecs"</span>, &d2, &nb);</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  assert(d == d2 || !<span class="stringliteral">"dataset does not have same dimension as train set"</span>);</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  printf (<span class="stringliteral">"[%.3f s] Indexing database, size %ld*%ld\n"</span>,</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  elapsed() - t0, nb, d);</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  index-><a class="code" href="structfaiss_1_1Index.html#a1b5e9ac70adbce0897dd6c8276ad96f2">add</a>(nb, xb);</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keyword">delete</span> [] xb;</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordtype">size_t</span> nq;</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordtype">float</span> *xq;</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </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>  printf (<span class="stringliteral">"[%.3f s] Loading queries\n"</span>, elapsed() - t0);</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">size_t</span> d2;</div>
|
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  xq = fvecs_read(<span class="stringliteral">"sift1M/sift_query.fvecs"</span>, &d2, &nq);</div>
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|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  assert(d == d2 || !<span class="stringliteral">"query does not have same dimension as train set"</span>);</div>
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|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  }</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordtype">size_t</span> k; <span class="comment">// nb of results per query in the GT</span></div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> *gt; <span class="comment">// nq * k matrix of ground-truth nearest-neighbors</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>  {</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  printf (<span class="stringliteral">"[%.3f s] Loading ground truth for %ld queries\n"</span>,</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  elapsed() - t0, nq);</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>  <span class="comment">// load ground-truth and convert int to long</span></div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordtype">size_t</span> nq2;</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordtype">int</span> *gt_int = ivecs_read(<span class="stringliteral">"sift1M/sift_groundtruth.ivecs"</span>, &k, &nq2);</div>
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|
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  assert(nq2 == nq || !<span class="stringliteral">"incorrect nb of ground truth entries"</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>  gt = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a>[k * nq];</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < k * nq; i++) {</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  gt[i] = gt_int[i];</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  }</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keyword">delete</span> [] gt_int;</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div>
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|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="comment">// Result of the auto-tuning</span></div>
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|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  std::string selected_params;</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div>
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|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  { <span class="comment">// run auto-tuning</span></div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> </div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  printf (<span class="stringliteral">"[%.3f s] Preparing auto-tune criterion 1-recall at 1 "</span></div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="stringliteral">"criterion, with k=%ld nq=%ld\n"</span>, elapsed() - t0, k, nq);</div>
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|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div>
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|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <a class="code" href="structfaiss_1_1OneRecallAtRCriterion.html">faiss::OneRecallAtRCriterion</a> crit(nq, 1);</div>
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|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  crit.set_groundtruth (k, <span class="keyword">nullptr</span>, gt);</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  crit.nnn = k; <span class="comment">// by default, the criterion will request only 1 NN</span></div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  printf (<span class="stringliteral">"[%.3f s] Preparing auto-tune parameters\n"</span>, elapsed() - t0);</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <a class="code" href="structfaiss_1_1ParameterSpace.html">faiss::ParameterSpace</a> params;</div>
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|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  params.<a class="code" href="structfaiss_1_1ParameterSpace.html#a9304975f379738eda384385eace8ad76">initialize</a>(index);</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  printf (<span class="stringliteral">"[%.3f s] Auto-tuning over %ld parameters (%ld combinations)\n"</span>,</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  elapsed() - t0, params.<a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>.size(),</div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  params.<a class="code" href="structfaiss_1_1ParameterSpace.html#a488329e3c1f08b9980d8e0f9c1491c75">n_combinations</a>());</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="code" href="structfaiss_1_1OperatingPoints.html">faiss::OperatingPoints</a> ops;</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  params.<a class="code" href="structfaiss_1_1ParameterSpace.html#a57728d29c4785d9003b9cd564d0c51b2">explore</a> (index, nq, xq, crit, &ops);</div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  printf (<span class="stringliteral">"[%.3f s] Found the following operating points: \n"</span>,</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  elapsed() - t0);</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> </div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  ops.display ();</div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="comment">// keep the first parameter that obtains > 0.5 1-recall@1</span></div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < ops.optimal_pts.size(); i++) {</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">if</span> (ops.optimal_pts[i].perf > 0.5) {</div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  selected_params = ops.optimal_pts[i].key;</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  }</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  }</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  assert (selected_params.size() >= 0 ||</div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  !<span class="stringliteral">"could not find good enough op point"</span>);</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  }</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> </div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  { <span class="comment">// Use the found configuration to perform a search</span></div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <a class="code" href="structfaiss_1_1ParameterSpace.html">faiss::ParameterSpace</a> params;</div>
|
|
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  printf (<span class="stringliteral">"[%.3f s] Setting parameter configuration \"%s\" on index\n"</span>,</div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  elapsed() - t0, selected_params.c_str());</div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  params.<a class="code" href="structfaiss_1_1ParameterSpace.html#a55783994cee46e9181bad2b3a7a973f4">set_index_parameters</a> (index, selected_params.c_str());</div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  printf (<span class="stringliteral">"[%.3f s] Perform a search on %ld queries\n"</span>,</div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  elapsed() - t0, nq);</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="comment">// output buffers</span></div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> *I = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a>[nq * k];</div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordtype">float</span> *D = <span class="keyword">new</span> <span class="keywordtype">float</span>[nq * k];</div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> </div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  index-><a class="code" href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">search</a>(nq, xq, k, D, I);</div>
|
|
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  printf (<span class="stringliteral">"[%.3f s] Compute recalls\n"</span>, elapsed() - t0);</div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// evaluate result by hand.</span></div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordtype">int</span> n_1 = 0, n_10 = 0, n_100 = 0;</div>
|
|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < nq; i++) {</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordtype">int</span> gt_nn = gt[i * k];</div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> j = 0; j < k; j++) {</div>
|
|
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">if</span> (I[i * k + j] == gt_nn) {</div>
|
|
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">if</span>(j < 1) n_1++;</div>
|
|
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">if</span>(j < 10) n_10++;</div>
|
|
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">if</span>(j < 100) n_100++;</div>
|
|
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  }</div>
|
|
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  }</div>
|
|
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  }</div>
|
|
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  printf(<span class="stringliteral">"R@1 = %.4f\n"</span>, n_1 / <span class="keywordtype">float</span>(nq));</div>
|
|
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  printf(<span class="stringliteral">"R@10 = %.4f\n"</span>, n_10 / <span class="keywordtype">float</span>(nq));</div>
|
|
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  printf(<span class="stringliteral">"R@100 = %.4f\n"</span>, n_100 / <span class="keywordtype">float</span>(nq));</div>
|
|
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> </div>
|
|
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  }</div>
|
|
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> </div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keyword">delete</span> [] xq;</div>
|
|
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keyword">delete</span> [] gt;</div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keyword">delete</span> index;</div>
|
|
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">return</span> 0;</div>
|
|
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> }</div>
|
|
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a57728d29c4785d9003b9cd564d0c51b2"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a57728d29c4785d9003b9cd564d0c51b2">faiss::ParameterSpace::explore</a></div><div class="ttdeci">void explore(Index *index, size_t nq, const float *xq, const AutoTuneCriterion &crit, OperatingPoints *ops) const </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00512">AutoTune.cpp:512</a></div></div>
|
|
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a334c1bb54bc2b70950a4a63950728cbb"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">faiss::ParameterSpace::parameter_ranges</a></div><div class="ttdeci">std::vector< ParameterRange > parameter_ranges</div><div class="ttdoc">all tunable parameters </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00135">AutoTune.h:135</a></div></div>
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|
<div class="ttc" id="structfaiss_1_1OperatingPoints_html"><div class="ttname"><a href="structfaiss_1_1OperatingPoints.html">faiss::OperatingPoints</a></div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00094">AutoTune.h:94</a></div></div>
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<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>
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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#l00064">Index.h:64</a></div></div>
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<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>
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<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a9304975f379738eda384385eace8ad76"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a9304975f379738eda384385eace8ad76">faiss::ParameterSpace::initialize</a></div><div class="ttdeci">virtual void initialize(const Index *index)</div><div class="ttdoc">initialize with reasonable parameters for the index </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00330">AutoTune.cpp:330</a></div></div>
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<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a488329e3c1f08b9980d8e0f9c1491c75"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a488329e3c1f08b9980d8e0f9c1491c75">faiss::ParameterSpace::n_combinations</a></div><div class="ttdeci">size_t n_combinations() const </div><div class="ttdoc">nb of combinations, = product of values sizes </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00267">AutoTune.cpp:267</a></div></div>
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<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a55783994cee46e9181bad2b3a7a973f4"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a55783994cee46e9181bad2b3a7a973f4">faiss::ParameterSpace::set_index_parameters</a></div><div class="ttdeci">void set_index_parameters(Index *index, size_t cno) const </div><div class="ttdoc">set a combination of parameters on an index </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00388">AutoTune.cpp:388</a></div></div>
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<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#l00133">AutoTune.h:133</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#l00061">Index.h:61</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_a8f67dfd73993e192dc78f2c93d9d9532"><div class="ttname"><a href="structfaiss_1_1Index.html#a8f67dfd73993e192dc78f2c93d9d9532">faiss::Index::train</a></div><div class="ttdeci">virtual void train(idx_t n, const float *x)</div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00092">Index.h:92</a></div></div>
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<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#l00623">AutoTune.cpp:623</a></div></div>
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<div class="ttc" id="structfaiss_1_1OneRecallAtRCriterion_html"><div class="ttname"><a href="structfaiss_1_1OneRecallAtRCriterion.html">faiss::OneRecallAtRCriterion</a></div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00058">AutoTune.h:58</a></div></div>
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