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| <h1 id="Lucene_Net_Search_Rescorer" data-uid="Lucene.Net.Search.Rescorer" class="text-break">Class Rescorer |
| </h1> |
| <div class="markdown level0 summary"><p>Re-scores the topN results (<a class="xref" href="Lucene.Net.Search.TopDocs.html">TopDocs</a>) from an original |
| query. See <a class="xref" href="Lucene.Net.Search.QueryRescorer.html">QueryRescorer</a> for an actual |
| implementation. Typically, you run a low-cost |
| first-pass query across the entire index, collecting the |
| top few hundred hits perhaps, and then use this class to |
| mix in a more costly second pass scoring.</p> |
| <p><p>See |
| <a class="xref" href="Lucene.Net.Search.QueryRescorer.html#Lucene_Net_Search_QueryRescorer_Rescore_Lucene_Net_Search_IndexSearcher_Lucene_Net_Search_TopDocs_Lucene_Net_Search_Query_System_Double_System_Int32_">Rescore(IndexSearcher, TopDocs, Query, Double, Int32)</a> |
| for a simple static method to call to rescore using a 2nd |
| pass <a class="xref" href="Lucene.Net.Search.Query.html">Query</a>. |
| <p> |
| <div class="lucene-block lucene-experimental">This is a Lucene.NET EXPERIMENTAL API, use at your own risk</div></div> |
| <div class="markdown level0 conceptual"></div> |
| <div class="inheritance"> |
| <h5>Inheritance</h5> |
| <div class="level0"><span class="xref">System.Object</span></div> |
| <div class="level1"><span class="xref">Rescorer</span></div> |
| <div class="level2"><a class="xref" href="Lucene.Net.Search.QueryRescorer.html">QueryRescorer</a></div> |
| <div class="level2"><a class="xref" href="Lucene.Net.Search.SortRescorer.html">SortRescorer</a></div> |
| </div> |
| <div class="inheritedMembers"> |
| <h5>Inherited Members</h5> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object)</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object, System.Object)</span> |
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| <span class="xref">System.Object.MemberwiseClone()</span> |
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| </div> |
| <div> |
| <span class="xref">System.Object.ToString()</span> |
| </div> |
| </div> |
| <h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Search.html">Lucene.Net.Search</a></h6> |
| <h6><strong>Assembly</strong>: Lucene.Net.dll</h6> |
| <h5 id="Lucene_Net_Search_Rescorer_syntax">Syntax</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public abstract class Rescorer</code></pre> |
| </div> |
| <h3 id="methods">Methods |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00010/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Rescorer_Explain_Lucene_Net_Search_IndexSearcher_Lucene_Net_Search_Explanation_System_Int32_.md&value=---%0Auid%3A%20Lucene.Net.Search.Rescorer.Explain(Lucene.Net.Search.IndexSearcher%2CLucene.Net.Search.Explanation%2CSystem.Int32)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
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| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/release/Lucene.Net_4_8_0_beta00010/src/Lucene.Net/Search/Rescorer.cs/#L54">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Rescorer_Explain_" data-uid="Lucene.Net.Search.Rescorer.Explain*"></a> |
| <h4 id="Lucene_Net_Search_Rescorer_Explain_Lucene_Net_Search_IndexSearcher_Lucene_Net_Search_Explanation_System_Int32_" data-uid="Lucene.Net.Search.Rescorer.Explain(Lucene.Net.Search.IndexSearcher,Lucene.Net.Search.Explanation,System.Int32)">Explain(IndexSearcher, Explanation, Int32)</h4> |
| <div class="markdown level1 summary"><p>Explains how the score for the specified document was |
| computed.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public abstract Explanation Explain(IndexSearcher searcher, Explanation firstPassExplanation, int docID)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Search.IndexSearcher.html">IndexSearcher</a></td> |
| <td><span class="parametername">searcher</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Search.Explanation.html">Explanation</a></td> |
| <td><span class="parametername">firstPassExplanation</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Int32</span></td> |
| <td><span class="parametername">docID</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="returns">Returns</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Search.Explanation.html">Explanation</a></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
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| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00010/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Rescorer_Rescore_Lucene_Net_Search_IndexSearcher_Lucene_Net_Search_TopDocs_System_Int32_.md&value=---%0Auid%3A%20Lucene.Net.Search.Rescorer.Rescore(Lucene.Net.Search.IndexSearcher%2CLucene.Net.Search.TopDocs%2CSystem.Int32)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
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| <a href="https://github.com/NightOwl888/lucenenet/blob/release/Lucene.Net_4_8_0_beta00010/src/Lucene.Net/Search/Rescorer.cs/#L48">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Rescorer_Rescore_" data-uid="Lucene.Net.Search.Rescorer.Rescore*"></a> |
| <h4 id="Lucene_Net_Search_Rescorer_Rescore_Lucene_Net_Search_IndexSearcher_Lucene_Net_Search_TopDocs_System_Int32_" data-uid="Lucene.Net.Search.Rescorer.Rescore(Lucene.Net.Search.IndexSearcher,Lucene.Net.Search.TopDocs,System.Int32)">Rescore(IndexSearcher, TopDocs, Int32)</h4> |
| <div class="markdown level1 summary"><p>Rescore an initial first-pass <a class="xref" href="Lucene.Net.Search.TopDocs.html">TopDocs</a>.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public abstract TopDocs Rescore(IndexSearcher searcher, TopDocs firstPassTopDocs, int topN)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Search.IndexSearcher.html">IndexSearcher</a></td> |
| <td><span class="parametername">searcher</span></td> |
| <td><p><a class="xref" href="Lucene.Net.Search.IndexSearcher.html">IndexSearcher</a> used to produce the |
| first pass topDocs </p> |
| </td> |
| </tr> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Search.TopDocs.html">TopDocs</a></td> |
| <td><span class="parametername">firstPassTopDocs</span></td> |
| <td><p>Hits from the first pass |
| search. It's very important that these hits were |
| produced by the provided searcher; otherwise the doc |
| IDs will not match! </p> |
| </td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Int32</span></td> |
| <td><span class="parametername">topN</span></td> |
| <td><p>How many re-scored hits to return </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="returns">Returns</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Search.TopDocs.html">TopDocs</a></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| </article> |
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