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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_1InvertedLists.html">InvertedLists</a></li> </ul>
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<a href="structfaiss_1_1InvertedLists-members.html">List of all members</a> </div>
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<div class="title">faiss::InvertedLists Struct Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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<div class="contents">
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<p><code>#include <<a class="el" href="InvertedLists_8h_source.html">InvertedLists.h</a>></code></p>
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Inheritance diagram for faiss::InvertedLists:</div>
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<area href="structfaiss_1_1ArrayInvertedLists.html" title="simple (default) implementation as an array of inverted lists " alt="faiss::ArrayInvertedLists" shape="rect" coords="0,56,171,80"/>
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<area href="structfaiss_1_1OnDiskInvertedLists.html" alt="faiss::OnDiskInvertedLists" shape="rect" coords="181,56,352,80"/>
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<area href="structfaiss_1_1HStackInvertedLists.html" title="Horizontal stack of inverted lists. " alt="faiss::HStackInvertedLists" shape="rect" coords="90,112,261,136"/>
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<area href="structfaiss_1_1SliceInvertedLists.html" title="vertical slice of indexes in another InvertedLists " alt="faiss::SliceInvertedLists" shape="rect" coords="452,112,623,136"/>
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<table class="memberdecls">
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Classes</h2></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists_1_1ScopedCodes.html">ScopedCodes</a></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists_1_1ScopedIds.html">ScopedIds</a></td></tr>
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<tr class="separator:"><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-types"></a>
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Public Types</h2></td></tr>
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<tr class="memitem:a2bb406f72dcad45cf03974ff14bfa473"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a2bb406f72dcad45cf03974ff14bfa473"></a>
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typedef <a class="el" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">Index::idx_t</a> </td><td class="memItemRight" valign="bottom"><b>idx_t</b></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-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a83d053d03720d938dc4fc4e2f674619c"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a83d053d03720d938dc4fc4e2f674619c"></a>
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 </td><td class="memItemRight" valign="bottom"><b>InvertedLists</b> (size_t <a class="el" href="structfaiss_1_1InvertedLists.html#afaf8b7aa3e846aa4553f6aae67827ec8">nlist</a>, size_t <a class="el" href="structfaiss_1_1InvertedLists.html#ae06049e4259edb47d443ef87bdedc744">code_size</a>)</td></tr>
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<tr class="separator:a83d053d03720d938dc4fc4e2f674619c"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a9bd256053ee360473842105460fe285f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a9bd256053ee360473842105460fe285f"></a>
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virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#a9bd256053ee360473842105460fe285f">list_size</a> (size_t list_no) const =0</td></tr>
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<tr class="memdesc:a9bd256053ee360473842105460fe285f"><td class="mdescLeft"> </td><td class="mdescRight">get the size of a list <br/></td></tr>
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<tr class="separator:a9bd256053ee360473842105460fe285f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a60b12f9efe940b617a8380adceef4032"><td class="memItemLeft" align="right" valign="top">virtual const uint8_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#a60b12f9efe940b617a8380adceef4032">get_codes</a> (size_t list_no) const =0</td></tr>
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<tr class="separator:a60b12f9efe940b617a8380adceef4032"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3ab6b389d8d85c5fbf23889064df7e95"><td class="memItemLeft" align="right" valign="top">virtual const idx_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#a3ab6b389d8d85c5fbf23889064df7e95">get_ids</a> (size_t list_no) const =0</td></tr>
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<tr class="separator:a3ab6b389d8d85c5fbf23889064df7e95"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad6a2111630ecd67ee5119d5198abcfb1"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ad6a2111630ecd67ee5119d5198abcfb1"></a>
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virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#ad6a2111630ecd67ee5119d5198abcfb1">release_codes</a> (size_t list_no, const uint8_t *codes) const </td></tr>
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<tr class="memdesc:ad6a2111630ecd67ee5119d5198abcfb1"><td class="mdescLeft"> </td><td class="mdescRight">release codes returned by get_codes (default implementation is nop <br/></td></tr>
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<tr class="separator:ad6a2111630ecd67ee5119d5198abcfb1"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae1618d2b5dca2704d3af8ced58548ac9"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae1618d2b5dca2704d3af8ced58548ac9"></a>
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virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#ae1618d2b5dca2704d3af8ced58548ac9">release_ids</a> (size_t list_no, const idx_t *ids) const </td></tr>
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<tr class="memdesc:ae1618d2b5dca2704d3af8ced58548ac9"><td class="mdescLeft"> </td><td class="mdescRight">release ids returned by get_ids <br/></td></tr>
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<tr class="separator:ae1618d2b5dca2704d3af8ced58548ac9"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a21b52cdb0601cd225bd7924932310876"><td class="memItemLeft" align="right" valign="top">virtual idx_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#a21b52cdb0601cd225bd7924932310876">get_single_id</a> (size_t list_no, size_t offset) const </td></tr>
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<tr class="separator:a21b52cdb0601cd225bd7924932310876"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:afc2760bed7c210f2fad9b03109f561ee"><td class="memItemLeft" align="right" valign="top">virtual const uint8_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#afc2760bed7c210f2fad9b03109f561ee">get_single_code</a> (size_t list_no, size_t offset) const </td></tr>
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<tr class="separator:afc2760bed7c210f2fad9b03109f561ee"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ac537aa14d2731c0ff907169211389b76"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#ac537aa14d2731c0ff907169211389b76">prefetch_lists</a> (const idx_t *list_nos, int <a class="el" href="structfaiss_1_1InvertedLists.html#afaf8b7aa3e846aa4553f6aae67827ec8">nlist</a>) const </td></tr>
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<tr class="separator:ac537aa14d2731c0ff907169211389b76"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:acd3e36cc06fc49e02773e403a84dba95"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="acd3e36cc06fc49e02773e403a84dba95"></a>
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virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#acd3e36cc06fc49e02773e403a84dba95">add_entry</a> (size_t list_no, idx_t theid, const uint8_t *code)</td></tr>
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<tr class="memdesc:acd3e36cc06fc49e02773e403a84dba95"><td class="mdescLeft"> </td><td class="mdescRight">add one entry to an inverted list <br/></td></tr>
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<tr class="separator:acd3e36cc06fc49e02773e403a84dba95"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0a2adbbd1d6b4f8ed1cbfa9bb93f4401"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a0a2adbbd1d6b4f8ed1cbfa9bb93f4401"></a>
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virtual size_t </td><td class="memItemRight" valign="bottom"><b>add_entries</b> (size_t list_no, size_t n_entry, const idx_t *ids, const uint8_t *code)=0</td></tr>
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<tr class="memitem:a57e1382949b91f77acc46790b6431056"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a57e1382949b91f77acc46790b6431056"></a>
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virtual void </td><td class="memItemRight" valign="bottom"><b>update_entry</b> (size_t list_no, size_t offset, idx_t id, const uint8_t *code)</td></tr>
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<tr class="separator:a57e1382949b91f77acc46790b6431056"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:afb45f0f325bf82f73737d804f8dbf49e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="afb45f0f325bf82f73737d804f8dbf49e"></a>
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virtual void </td><td class="memItemRight" valign="bottom"><b>update_entries</b> (size_t list_no, size_t offset, size_t n_entry, const idx_t *ids, const uint8_t *code)=0</td></tr>
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<tr class="memitem:aae502a3372d94450e0b8ff4350b43610"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aae502a3372d94450e0b8ff4350b43610"></a>
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virtual void </td><td class="memItemRight" valign="bottom"><b>resize</b> (size_t list_no, size_t new_size)=0</td></tr>
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<tr class="memitem:a72e736253a669dad5f6e5188168e5c60"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a72e736253a669dad5f6e5188168e5c60"></a>
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virtual void </td><td class="memItemRight" valign="bottom"><b>reset</b> ()</td></tr>
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<tr class="memitem:ac2a0686121ef5bdd6eb70f7eb3cf9b3a"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ac2a0686121ef5bdd6eb70f7eb3cf9b3a"></a>
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#ac2a0686121ef5bdd6eb70f7eb3cf9b3a">merge_from</a> (<a class="el" href="structfaiss_1_1InvertedLists.html">InvertedLists</a> *oivf, size_t add_id)</td></tr>
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<tr class="memdesc:ac2a0686121ef5bdd6eb70f7eb3cf9b3a"><td class="mdescLeft"> </td><td class="mdescRight">move all entries from oivf (empty on output) <br/></td></tr>
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<tr class="separator:ac2a0686121ef5bdd6eb70f7eb3cf9b3a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aacf34f6cf392771fe2e68210cd4e009b"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aacf34f6cf392771fe2e68210cd4e009b"></a>
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double </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#aacf34f6cf392771fe2e68210cd4e009b">imbalance_factor</a> () const </td></tr>
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<tr class="memdesc:aacf34f6cf392771fe2e68210cd4e009b"><td class="mdescLeft"> </td><td class="mdescRight">1= perfectly balanced, >1: imbalanced <br/></td></tr>
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<tr class="separator:aacf34f6cf392771fe2e68210cd4e009b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a156de8be4b21a0dfa9a48a3918a0b5c3"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a156de8be4b21a0dfa9a48a3918a0b5c3"></a>
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#a156de8be4b21a0dfa9a48a3918a0b5c3">print_stats</a> () const </td></tr>
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<tr class="memdesc:a156de8be4b21a0dfa9a48a3918a0b5c3"><td class="mdescLeft"> </td><td class="mdescRight">display some stats about the inverted lists <br/></td></tr>
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<tr class="memitem:a722eef5a0e5bf5dcf78228a903e16af9"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a722eef5a0e5bf5dcf78228a903e16af9"></a>
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size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#a722eef5a0e5bf5dcf78228a903e16af9">compute_ntotal</a> () const </td></tr>
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<tr class="memdesc:a722eef5a0e5bf5dcf78228a903e16af9"><td class="mdescLeft"> </td><td class="mdescRight">sum up list sizes <br/></td></tr>
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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:afaf8b7aa3e846aa4553f6aae67827ec8"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="afaf8b7aa3e846aa4553f6aae67827ec8"></a>
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size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#afaf8b7aa3e846aa4553f6aae67827ec8">nlist</a></td></tr>
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<tr class="memdesc:afaf8b7aa3e846aa4553f6aae67827ec8"><td class="mdescLeft"> </td><td class="mdescRight">number of possible key values <br/></td></tr>
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size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structfaiss_1_1InvertedLists.html#ae06049e4259edb47d443ef87bdedc744">code_size</a></td></tr>
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<tr class="memdesc:ae06049e4259edb47d443ef87bdedc744"><td class="mdescLeft"> </td><td class="mdescRight">code size per vector in bytes <br/></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>Table of inverted lists multithreading rules:</p>
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<ul>
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<li>concurrent read accesses are allowed</li>
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<li>concurrent update accesses are allowed</li>
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<li>for resize and add_entries, only concurrent access to different lists are allowed </li>
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</ul>
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<p>Definition at line <a class="el" href="InvertedLists_8h_source.html#l00031">31</a> of file <a class="el" href="InvertedLists_8h_source.html">InvertedLists.h</a>.</p>
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</div><h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">virtual const uint8_t* faiss::InvertedLists::get_codes </td>
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<td>(</td>
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<td class="paramtype">size_t </td>
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<td class="paramname"><em>list_no</em></td><td>)</td>
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<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
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<p>get the codes for an inverted list must be released by release_codes</p>
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<dl class="section return"><dt>Returns</dt><dd>codes size list_size * code_size </dd></dl>
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<p>Implemented in <a class="el" href="structfaiss_1_1MaskedInvertedLists.html#a4376b14cd4e349d51848995c102659af">faiss::MaskedInvertedLists</a>, <a class="el" href="structfaiss_1_1VStackInvertedLists.html#a112f9458bd91ca5dbed2cb6d090a0034">faiss::VStackInvertedLists</a>, <a class="el" href="structfaiss_1_1SliceInvertedLists.html#a95e1c091bea8695c6df29ed87b3cf0d9">faiss::SliceInvertedLists</a>, <a class="el" href="structfaiss_1_1HStackInvertedLists.html#a3a69cb5d1c05fa6b583672c459ecc4a6">faiss::HStackInvertedLists</a>, <a class="el" href="structfaiss_1_1ArrayInvertedLists.html#abf4ab66d09d8a1b707dddc77d0c2e8fc">faiss::ArrayInvertedLists</a>, and <a class="el" href="structfaiss_1_1OnDiskInvertedLists.html#a1695e1d8d64a00e8e5f57ebf2210cb87">faiss::OnDiskInvertedLists</a>.</p>
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<td class="memname">virtual const idx_t* faiss::InvertedLists::get_ids </td>
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<td>(</td>
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<td class="paramtype">size_t </td>
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<td class="paramname"><em>list_no</em></td><td>)</td>
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<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
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<p>get the ids for an inverted list must be released by release_ids</p>
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<dl class="section return"><dt>Returns</dt><dd>ids size list_size </dd></dl>
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<p>Implemented in <a class="el" href="structfaiss_1_1MaskedInvertedLists.html#a924d45d2ab3809c728e7b02ec569b2ba">faiss::MaskedInvertedLists</a>, <a class="el" href="structfaiss_1_1VStackInvertedLists.html#a912c3f0417c833a81da5957f4d77452a">faiss::VStackInvertedLists</a>, <a class="el" href="structfaiss_1_1SliceInvertedLists.html#ac5eb6df92e3bc9d49d7e88f0ff8d3a88">faiss::SliceInvertedLists</a>, <a class="el" href="structfaiss_1_1HStackInvertedLists.html#af812098083c022166d29a20846de173e">faiss::HStackInvertedLists</a>, <a class="el" href="structfaiss_1_1ArrayInvertedLists.html#abd59f7cf340d9c17eb6b402579e4010b">faiss::ArrayInvertedLists</a>, and <a class="el" href="structfaiss_1_1OnDiskInvertedLists.html#ae54e7c6abc10c3d59ea3cd1113466957">faiss::OnDiskInvertedLists</a>.</p>
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<td class="memname">const uint8_t * faiss::InvertedLists::get_single_code </td>
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<td>(</td>
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<td class="paramname"><em>list_no</em>, </td>
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<dl class="section return"><dt>Returns</dt><dd>a single code in an inverted list (should be deallocated with release_codes) </dd></dl>
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<p>Reimplemented in <a class="el" href="structfaiss_1_1MaskedInvertedLists.html#a429657c4c203d472f59147f301de0ede">faiss::MaskedInvertedLists</a>, <a class="el" href="structfaiss_1_1VStackInvertedLists.html#a3c229e59737b533464f5403c5cf5fca4">faiss::VStackInvertedLists</a>, <a class="el" href="structfaiss_1_1SliceInvertedLists.html#abc95a98970bb7b4b044c5a61520c20d3">faiss::SliceInvertedLists</a>, and <a class="el" href="structfaiss_1_1HStackInvertedLists.html#aeef6bd41622796f5d142e60fe78a5da8">faiss::HStackInvertedLists</a>.</p>
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<p>Definition at line <a class="el" href="InvertedLists_8cpp_source.html#l00052">52</a> of file <a class="el" href="InvertedLists_8cpp_source.html">InvertedLists.cpp</a>.</p>
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<td class="memname">InvertedLists::idx_t faiss::InvertedLists::get_single_id </td>
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<td>(</td>
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<td class="paramtype">size_t </td>
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<td class="paramname"><em>list_no</em>, </td>
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<td class="paramkey"></td>
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<td class="paramname"><em>offset</em> </td>
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<dl class="section return"><dt>Returns</dt><dd>a single id in an inverted list </dd></dl>
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<p>Reimplemented in <a class="el" href="structfaiss_1_1MaskedInvertedLists.html#af0d9f7b61caef91e30124b0f7a9d44b9">faiss::MaskedInvertedLists</a>, <a class="el" href="structfaiss_1_1VStackInvertedLists.html#ab2d660680d9b4a2667c321515b5baa77">faiss::VStackInvertedLists</a>, <a class="el" href="structfaiss_1_1SliceInvertedLists.html#a714d282706a7301772fcd145854a976e">faiss::SliceInvertedLists</a>, and <a class="el" href="structfaiss_1_1HStackInvertedLists.html#aff00b896467e63cf821d35668804b039">faiss::HStackInvertedLists</a>.</p>
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<p>Definition at line <a class="el" href="InvertedLists_8cpp_source.html#l00035">35</a> of file <a class="el" href="InvertedLists_8cpp_source.html">InvertedLists.cpp</a>.</p>
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<td class="memname">void faiss::InvertedLists::prefetch_lists </td>
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<td>(</td>
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<td class="paramtype">const idx_t * </td>
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<td class="paramname"><em>list_nos</em>, </td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>nlist</em> </td>
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<p>prepare the following lists (default does nothing) a list can be -1 hence the signed long </p>
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<p>Reimplemented in <a class="el" href="structfaiss_1_1MaskedInvertedLists.html#a5fbd34b4052c314148c44f14b4d3c2d3">faiss::MaskedInvertedLists</a>, <a class="el" href="structfaiss_1_1VStackInvertedLists.html#af37c2171d22f7f9200fa5cdedb363471">faiss::VStackInvertedLists</a>, <a class="el" href="structfaiss_1_1SliceInvertedLists.html#a40f74e21271fa5492fb9b78bb04a514f">faiss::SliceInvertedLists</a>, <a class="el" href="structfaiss_1_1HStackInvertedLists.html#a249f680477fac00cdfcf319c3bbe8c05">faiss::HStackInvertedLists</a>, and <a class="el" href="structfaiss_1_1OnDiskInvertedLists.html#a04ad61e3a23ced0aea032bf1e699436d">faiss::OnDiskInvertedLists</a>.</p>
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<p>Definition at line <a class="el" href="InvertedLists_8cpp_source.html#l00049">49</a> of file <a class="el" href="InvertedLists_8cpp_source.html">InvertedLists.cpp</a>.</p>
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<hr/>The documentation for this struct was generated from the following files:<ul>
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<li>/data/users/hoss/faiss/<a class="el" href="InvertedLists_8h_source.html">InvertedLists.h</a></li>
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<li>/data/users/hoss/faiss/<a class="el" href="InvertedLists_8cpp_source.html">InvertedLists.cpp</a></li>
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