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<li class="navelem"><a class="el" href="namespacefaiss.html">faiss</a></li><li class="navelem"><a class="el" href="structfaiss_1_1Score3Computer.html">Score3Computer</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> |
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<div class="title">faiss::Score3Computer< Ttab, Taccu > Struct Template Reference</div> </div>
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Inheritance diagram for faiss::Score3Computer< Ttab, Taccu >:</div>
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<area href="structfaiss_1_1PermutationObjective.html" title="abstract class for the loss function " alt="faiss::PermutationObjective" shape="rect" coords="0,0,231,24"/>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a07a726903418960a2d8000506d88f8e6"><td class="memItemLeft" align="right" valign="top">Taccu </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1Score3Computer.html#a07a726903418960a2d8000506d88f8e6">compute</a> (const int *perm) const </td></tr>
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<tr class="separator:a07a726903418960a2d8000506d88f8e6"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a567feac7ddd3bb467a9ed30671caccb1"><td class="memItemLeft" align="right" valign="top">Taccu </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1Score3Computer.html#a567feac7ddd3bb467a9ed30671caccb1">compute_update</a> (const int *perm, int iw, int jw) const </td></tr>
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<tr class="separator:a567feac7ddd3bb467a9ed30671caccb1"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a1a44799c391adf3a9170e96e7643e9ae"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a1a44799c391adf3a9170e96e7643e9ae"></a>
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Taccu </td><td class="memItemRight" valign="bottom"><b>update_i</b> (const int *perm, int iw, int jw, int ip0, int ip, const Ttab *n_gt_i) const </td></tr>
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<tr class="separator:a1a44799c391adf3a9170e96e7643e9ae"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a8a9f9d95c9a4c0948cb5df0b04c5ebc8"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a8a9f9d95c9a4c0948cb5df0b04c5ebc8"></a>
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Taccu </td><td class="memItemRight" valign="bottom"><b>update_i_plane</b> (const int *perm, int iw, int jw, int ip0, int ip, const Ttab *n_gt_i) const </td></tr>
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<tr class="separator:a8a9f9d95c9a4c0948cb5df0b04c5ebc8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a227601c3dc8779bb13747ba04934e0c8"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a227601c3dc8779bb13747ba04934e0c8"></a>
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Taccu </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1Score3Computer.html#a227601c3dc8779bb13747ba04934e0c8">update_k</a> (const int *perm, int iw, int jw, int ip0, int ip, int jp0, int jp, int k, const Ttab *n_gt_ij) const </td></tr>
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<tr class="memdesc:a227601c3dc8779bb13747ba04934e0c8"><td class="mdescLeft"> </td><td class="mdescRight">used for the 8 cells were the 3 indices are swapped <br/></td></tr>
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<tr class="separator:a227601c3dc8779bb13747ba04934e0c8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a98da6005edbb5ec26311bc947866122d"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a98da6005edbb5ec26311bc947866122d"></a>
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Taccu </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1Score3Computer.html#a98da6005edbb5ec26311bc947866122d">update_j_line</a> (const int *perm, int iw, int jw, int ip0, int ip, int jp0, int jp, const Ttab *n_gt_ij) const </td></tr>
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<tr class="memdesc:a98da6005edbb5ec26311bc947866122d"><td class="mdescLeft"> </td><td class="mdescRight">compute update on a line of k's, where i and j are swapped <br/></td></tr>
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<tr class="separator:a98da6005edbb5ec26311bc947866122d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:acf371848bac76ba275ceb5e10f805d33"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="acf371848bac76ba275ceb5e10f805d33"></a>
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Taccu </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1Score3Computer.html#acf371848bac76ba275ceb5e10f805d33">update_i_cross</a> (const int *perm, int iw, int jw, int ip0, int ip, const Ttab *n_gt_i) const </td></tr>
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<tr class="memdesc:acf371848bac76ba275ceb5e10f805d33"><td class="mdescLeft"> </td><td class="mdescRight">considers the 2 pairs of crossing lines j=iw or jw and k = iw or kw <br/></td></tr>
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<tr class="separator:acf371848bac76ba275ceb5e10f805d33"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a49fe0b8ba9665f6997e4f413409c174c"><td class="memItemLeft" align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1Score3Computer.html#a49fe0b8ba9665f6997e4f413409c174c">compute_cost</a> (const int *perm) const </td></tr>
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<tr class="memitem:afc34a00dace6355b0bda77a0841dc654"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="afc34a00dace6355b0bda77a0841dc654"></a>
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virtual double </td><td class="memItemRight" valign="bottom"><b>cost_update</b> (const int *perm, int iw, int jw) const </td></tr>
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<tr class="separator:afc34a00dace6355b0bda77a0841dc654"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
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Public Attributes</h2></td></tr>
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<tr class="memitem:a39a449545b35ca4a3a01db109526832e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a39a449545b35ca4a3a01db109526832e"></a>
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int </td><td class="memItemRight" valign="bottom"><b>nc</b></td></tr>
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<tr class="memitem:ac054431b63a010a8cfe013b40eac746a"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ac054431b63a010a8cfe013b40eac746a"></a>
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std::vector< Ttab > </td><td class="memItemRight" valign="bottom"><b>n_gt</b></td></tr>
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<tr class="inherit_header pub_attribs_structfaiss_1_1PermutationObjective"><td colspan="2" onclick="javascript:toggleInherit('pub_attribs_structfaiss_1_1PermutationObjective')"><img src="closed.png" alt="-"/> Public Attributes inherited from <a class="el" href="structfaiss_1_1PermutationObjective.html">faiss::PermutationObjective</a></td></tr>
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<tr class="memitem:a81657be192b4589b13a3f51fc0765c2f inherit pub_attribs_structfaiss_1_1PermutationObjective"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a81657be192b4589b13a3f51fc0765c2f"></a>
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int </td><td class="memItemRight" valign="bottom"><b>n</b></td></tr>
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<tr class="separator:a81657be192b4589b13a3f51fc0765c2f inherit pub_attribs_structfaiss_1_1PermutationObjective"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><h3>template<typename Ttab, typename Taccu><br/>
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struct faiss::Score3Computer< Ttab, Taccu ></h3>
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<p>Maintains a 3D table of elementary costs. Accumulates elements based on Hamming distance comparisons </p>
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<p>Definition at line <a class="el" href="PolysemousTraining_8cpp_source.html#l00452">452</a> of file <a class="el" href="PolysemousTraining_8cpp_source.html">PolysemousTraining.cpp</a>.</p>
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</div><h2 class="groupheader">Member Function Documentation</h2>
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template<typename Ttab, typename Taccu> </div>
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<td class="memname">Taccu <a class="el" href="structfaiss_1_1Score3Computer.html">faiss::Score3Computer</a>< Ttab, Taccu >::compute </td>
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<td>(</td>
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<td class="paramtype">const int * </td>
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<td class="paramname"><em>perm</em></td><td>)</td>
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<td> const</td>
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<p>the cost is a triple loop on the nc * nc * nc matrix of entries. </p>
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<p>Definition at line <a class="el" href="PolysemousTraining_8cpp_source.html#l00464">464</a> of file <a class="el" href="PolysemousTraining_8cpp_source.html">PolysemousTraining.cpp</a>.</p>
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template<typename Ttab, typename Taccu> </div>
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<td class="memname">virtual double <a class="el" href="structfaiss_1_1Score3Computer.html">faiss::Score3Computer</a>< Ttab, Taccu >::compute_cost </td>
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<td>(</td>
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<td class="paramtype">const int * </td>
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<td class="paramname"><em>perm</em></td><td>)</td>
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<p><a class="el" href="structfaiss_1_1PermutationObjective.html" title="abstract class for the loss function ">PermutationObjective</a> implementeation (just negates the scores for minimization) </p>
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<p>Implements <a class="el" href="structfaiss_1_1PermutationObjective.html">faiss::PermutationObjective</a>.</p>
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<p>Definition at line <a class="el" href="PolysemousTraining_8cpp_source.html#l00640">640</a> of file <a class="el" href="PolysemousTraining_8cpp_source.html">PolysemousTraining.cpp</a>.</p>
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template<typename Ttab, typename Taccu> </div>
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<td class="memname">Taccu <a class="el" href="structfaiss_1_1Score3Computer.html">faiss::Score3Computer</a>< Ttab, Taccu >::compute_update </td>
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<td>(</td>
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<td class="paramtype">const int * </td>
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<td class="paramname"><em>perm</em>, </td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>iw</em>, </td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>jw</em> </td>
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<td>)</td>
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<p>cost update if entries iw and jw of the permutation would be swapped.</p>
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<p>The computation is optimized by avoiding elements in the nc*nc*nc cube that are known not to change. For nc=256, this reduces the nb of cells to visit to about 6/256 th of the cells. Practical speedup is about 8x, and the code is quite complex :-/ </p>
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<p>Definition at line <a class="el" href="PolysemousTraining_8cpp_source.html#l00495">495</a> of file <a class="el" href="PolysemousTraining_8cpp_source.html">PolysemousTraining.cpp</a>.</p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
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<li><a class="el" href="PolysemousTraining_8cpp_source.html">PolysemousTraining.cpp</a></li>
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