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| <h1 id="Lucene_Net_Search_Similarities_DFRSimilarity" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity" class="text-break">Class DFRSimilarity |
| </h1> |
| <div class="markdown level0 summary"><p>Implements the <em>divergence from randomness (DFR)</em> framework |
| introduced in Gianni Amati and Cornelis Joost Van Rijsbergen. 2002. |
| Probabilistic models of information retrieval based on measuring the |
| divergence from randomness. ACM Trans. Inf. Syst. 20, 4 (October 2002), |
| 357-389. |
| <p>The DFR scoring formula is composed of three separate components: the |
| <em>basic model</em>, the <em>aftereffect</em> and an additional |
| <em>normalization</em> component, represented by the classes |
| <a class="xref" href="Lucene.Net.Search.Similarities.BasicModel.html">BasicModel</a>, <a class="xref" href="Lucene.Net.Search.Similarities.AfterEffect.html">AfterEffect</a> and <a class="xref" href="Lucene.Net.Search.Similarities.Normalization.html">Normalization</a>, |
| respectively. The names of these classes were chosen to match the names of |
| their counterparts in the Terrier IR engine.</p> |
| <p>To construct a <a class="xref" href="Lucene.Net.Search.Similarities.DFRSimilarity.html">DFRSimilarity</a>, you must specify the implementations for |
| all three components of DFR: |
| <table><thead><tr><th>ComponentImplementations</th><th></th></tr></thead><tbody><tr><td><a class="xref" href="Lucene.Net.Search.Similarities.BasicModel.html">BasicModel</a>: Basic model of information content: |
| <ul><li><a class="xref" href="Lucene.Net.Search.Similarities.BasicModelBE.html">BasicModelBE</a>: Limiting form of Bose-Einstein</li><li><a class="xref" href="Lucene.Net.Search.Similarities.BasicModelG.html">BasicModelG</a>: Geometric approximation of Bose-Einstein</li><li><a class="xref" href="Lucene.Net.Search.Similarities.BasicModelP.html">BasicModelP</a>: Poisson approximation of the Binomial</li><li><a class="xref" href="Lucene.Net.Search.Similarities.BasicModelD.html">BasicModelD</a>: Divergence approximation of the Binomial</li><li><a class="xref" href="Lucene.Net.Search.Similarities.BasicModelIn.html">BasicModelIn</a>: Inverse document frequency</li><li><a class="xref" href="Lucene.Net.Search.Similarities.BasicModelIne.html">BasicModelIne</a>: Inverse expected document frequency [mixture of Poisson and IDF]</li><li><a class="xref" href="Lucene.Net.Search.Similarities.BasicModelIF.html">BasicModelIF</a>: Inverse term frequency [approximation of I(ne)]</li></ul> |
| </td><td></td></tr><tr><td><a class="xref" href="Lucene.Net.Search.Similarities.AfterEffect.html">AfterEffect</a>: First normalization of information gain: |
| <ul><li><a class="xref" href="Lucene.Net.Search.Similarities.AfterEffectL.html">AfterEffectL</a>: Laplace's law of succession</li><li><a class="xref" href="Lucene.Net.Search.Similarities.AfterEffectB.html">AfterEffectB</a>: Ratio of two Bernoulli processes</li><li><a class="xref" href="Lucene.Net.Search.Similarities.AfterEffect.NoAfterEffect.html">AfterEffect.NoAfterEffect</a>: no first normalization</li></ul> |
| </td><td></td></tr><tr><td><a class="xref" href="Lucene.Net.Search.Similarities.Normalization.html">Normalization</a>: Second (length) normalization: |
| <ul><li><a class="xref" href="Lucene.Net.Search.Similarities.NormalizationH1.html">NormalizationH1</a>: Uniform distribution of term frequency</li><li><a class="xref" href="Lucene.Net.Search.Similarities.NormalizationH2.html">NormalizationH2</a>: term frequency density inversely related to length</li><li><a class="xref" href="Lucene.Net.Search.Similarities.NormalizationH3.html">NormalizationH3</a>: term frequency normalization provided by Dirichlet prior</li><li><a class="xref" href="Lucene.Net.Search.Similarities.NormalizationZ.html">NormalizationZ</a>: term frequency normalization provided by a Zipfian relation</li><li><a class="xref" href="Lucene.Net.Search.Similarities.Normalization.NoNormalization.html">Normalization.NoNormalization</a>: no second normalization</li></ul> |
| </td><td></td></tr></tbody></table></p> |
| <p> |
| <p>Note that <em>qtf</em>, the multiplicity of term-occurrence in the query, |
| is not handled by this implementation. |
| </p> </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"><a class="xref" href="Lucene.Net.Search.Similarities.Similarity.html">Similarity</a></div> |
| <div class="level2"><a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html">SimilarityBase</a></div> |
| <div class="level3"><span class="xref">DFRSimilarity</span></div> |
| </div> |
| <div class="inheritedMembers"> |
| <h5>Inherited Members</h5> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_DiscountOverlaps">SimilarityBase.DiscountOverlaps</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_ComputeWeight_System_Single_Lucene_Net_Search_CollectionStatistics_Lucene_Net_Search_TermStatistics___">SimilarityBase.ComputeWeight(Single, CollectionStatistics, TermStatistics[])</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_NewStats_System_String_System_Single_">SimilarityBase.NewStats(String, Single)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_FillBasicStats_Lucene_Net_Search_Similarities_BasicStats_Lucene_Net_Search_CollectionStatistics_Lucene_Net_Search_TermStatistics_">SimilarityBase.FillBasicStats(BasicStats, CollectionStatistics, TermStatistics)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_Explain_Lucene_Net_Search_Similarities_BasicStats_System_Int32_Lucene_Net_Search_Explanation_System_Single_">SimilarityBase.Explain(BasicStats, Int32, Explanation, Single)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_GetSimScorer_Lucene_Net_Search_Similarities_Similarity_SimWeight_Lucene_Net_Index_AtomicReaderContext_">SimilarityBase.GetSimScorer(Similarity.SimWeight, AtomicReaderContext)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_ComputeNorm_Lucene_Net_Index_FieldInvertState_">SimilarityBase.ComputeNorm(FieldInvertState)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_DecodeNormValue_System_Byte_">SimilarityBase.DecodeNormValue(Byte)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_EncodeNormValue_System_Single_System_Single_">SimilarityBase.EncodeNormValue(Single, Single)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_Log2_System_Double_">SimilarityBase.Log2(Double)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.Similarity.html#Lucene_Net_Search_Similarities_Similarity_Coord_System_Int32_System_Int32_">Similarity.Coord(Int32, Int32)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Search.Similarities.Similarity.html#Lucene_Net_Search_Similarities_Similarity_QueryNorm_System_Single_">Similarity.QueryNorm(Single)</a> |
| </div> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object)</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object, System.Object)</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.GetHashCode()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.GetType()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.MemberwiseClone()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span> |
| </div> |
| </div> |
| <h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Search.Similarities.html">Lucene.Net.Search.Similarities</a></h6> |
| <h6><strong>Assembly</strong>: Lucene.Net.dll</h6> |
| <h5 id="Lucene_Net_Search_Similarities_DFRSimilarity_syntax">Syntax</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public class DFRSimilarity : SimilarityBase</code></pre> |
| </div> |
| <h3 id="constructors">Constructors |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_DFRSimilarity__ctor_Lucene_Net_Search_Similarities_BasicModel_Lucene_Net_Search_Similarities_AfterEffect_Lucene_Net_Search_Similarities_Normalization_.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.DFRSimilarity.%23ctor(Lucene.Net.Search.Similarities.BasicModel%2CLucene.Net.Search.Similarities.AfterEffect%2CLucene.Net.Search.Similarities.Normalization)%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> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Search/Similarities/DFRSimilarity.cs/#L111">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Similarities_DFRSimilarity__ctor_" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.#ctor*"></a> |
| <h4 id="Lucene_Net_Search_Similarities_DFRSimilarity__ctor_Lucene_Net_Search_Similarities_BasicModel_Lucene_Net_Search_Similarities_AfterEffect_Lucene_Net_Search_Similarities_Normalization_" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.#ctor(Lucene.Net.Search.Similarities.BasicModel,Lucene.Net.Search.Similarities.AfterEffect,Lucene.Net.Search.Similarities.Normalization)">DFRSimilarity(BasicModel, AfterEffect, Normalization)</h4> |
| <div class="markdown level1 summary"><p>Creates DFRSimilarity from the three components. |
| <p> |
| Note that <code>null</code> values are not allowed: |
| if you want no normalization or after-effect, instead pass |
| <a class="xref" href="Lucene.Net.Search.Similarities.Normalization.NoNormalization.html">Normalization.NoNormalization</a> or <a class="xref" href="Lucene.Net.Search.Similarities.AfterEffect.NoAfterEffect.html">AfterEffect.NoAfterEffect</a> respectively. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public DFRSimilarity(BasicModel basicModel, AfterEffect afterEffect, Normalization normalization)</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.Similarities.BasicModel.html">BasicModel</a></td> |
| <td><span class="parametername">basicModel</span></td> |
| <td><p>Basic model of information content </p> |
| </td> |
| </tr> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Search.Similarities.AfterEffect.html">AfterEffect</a></td> |
| <td><span class="parametername">afterEffect</span></td> |
| <td><p>First normalization of information gain </p> |
| </td> |
| </tr> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Search.Similarities.Normalization.html">Normalization</a></td> |
| <td><span class="parametername">normalization</span></td> |
| <td><p>Second (length) normalization </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h3 id="fields">Fields |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_DFRSimilarity_m_afterEffect.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.DFRSimilarity.m_afterEffect%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> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Search/Similarities/DFRSimilarity.cs/#L96">View Source</a> |
| </span> |
| <h4 id="Lucene_Net_Search_Similarities_DFRSimilarity_m_afterEffect" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.m_afterEffect">m_afterEffect</h4> |
| <div class="markdown level1 summary"><p>The first normalization of the information content. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">protected readonly AfterEffect m_afterEffect</code></pre> |
| </div> |
| <h5 class="fieldValue">Field Value</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.Similarities.AfterEffect.html">AfterEffect</a></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_DFRSimilarity_m_basicModel.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.DFRSimilarity.m_basicModel%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> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Search/Similarities/DFRSimilarity.cs/#L92">View Source</a> |
| </span> |
| <h4 id="Lucene_Net_Search_Similarities_DFRSimilarity_m_basicModel" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.m_basicModel">m_basicModel</h4> |
| <div class="markdown level1 summary"><p>The basic model for information content. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">protected readonly BasicModel m_basicModel</code></pre> |
| </div> |
| <h5 class="fieldValue">Field Value</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.Similarities.BasicModel.html">BasicModel</a></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_DFRSimilarity_m_normalization.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.DFRSimilarity.m_normalization%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> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Search/Similarities/DFRSimilarity.cs/#L100">View Source</a> |
| </span> |
| <h4 id="Lucene_Net_Search_Similarities_DFRSimilarity_m_normalization" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.m_normalization">m_normalization</h4> |
| <div class="markdown level1 summary"><p>The term frequency normalization. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">protected readonly Normalization m_normalization</code></pre> |
| </div> |
| <h5 class="fieldValue">Field Value</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.Similarities.Normalization.html">Normalization</a></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h3 id="properties">Properties |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_DFRSimilarity_AfterEffect.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.DFRSimilarity.AfterEffect%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> |
| <a id="Lucene_Net_Search_Similarities_DFRSimilarity_AfterEffect_" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.AfterEffect*"></a> |
| <h4 id="Lucene_Net_Search_Similarities_DFRSimilarity_AfterEffect" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.AfterEffect">AfterEffect</h4> |
| <div class="markdown level1 summary"><p>Returns the first normalization</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public virtual AfterEffect AfterEffect { get; }</code></pre> |
| </div> |
| <h5 class="propertyValue">Property Value</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.Similarities.AfterEffect.html">AfterEffect</a></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_DFRSimilarity_BasicModel.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.DFRSimilarity.BasicModel%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> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Search/Similarities/DFRSimilarity.cs/#L150">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Similarities_DFRSimilarity_BasicModel_" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.BasicModel*"></a> |
| <h4 id="Lucene_Net_Search_Similarities_DFRSimilarity_BasicModel" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.BasicModel">BasicModel</h4> |
| <div class="markdown level1 summary"><p>Returns the basic model of information content</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public virtual BasicModel BasicModel { get; }</code></pre> |
| </div> |
| <h5 class="propertyValue">Property Value</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.Similarities.BasicModel.html">BasicModel</a></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_DFRSimilarity_Normalization.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.DFRSimilarity.Normalization%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> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Search/Similarities/DFRSimilarity.cs/#L160">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Similarities_DFRSimilarity_Normalization_" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.Normalization*"></a> |
| <h4 id="Lucene_Net_Search_Similarities_DFRSimilarity_Normalization" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.Normalization">Normalization</h4> |
| <div class="markdown level1 summary"><p>Returns the second normalization</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public virtual Normalization Normalization { get; }</code></pre> |
| </div> |
| <h5 class="propertyValue">Property Value</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.Similarities.Normalization.html">Normalization</a></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <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-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_DFRSimilarity_Explain_Lucene_Net_Search_Explanation_Lucene_Net_Search_Similarities_BasicStats_System_Int32_System_Single_System_Single_.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.DFRSimilarity.Explain(Lucene.Net.Search.Explanation%2CLucene.Net.Search.Similarities.BasicStats%2CSystem.Int32%2CSystem.Single%2CSystem.Single)%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> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Search/Similarities/DFRSimilarity.cs/#L128">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Similarities_DFRSimilarity_Explain_" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.Explain*"></a> |
| <h4 id="Lucene_Net_Search_Similarities_DFRSimilarity_Explain_Lucene_Net_Search_Explanation_Lucene_Net_Search_Similarities_BasicStats_System_Int32_System_Single_System_Single_" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.Explain(Lucene.Net.Search.Explanation,Lucene.Net.Search.Similarities.BasicStats,System.Int32,System.Single,System.Single)">Explain(Explanation, BasicStats, Int32, Single, Single)</h4> |
| <div class="markdown level1 summary"></div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">protected override void Explain(Explanation expl, BasicStats stats, int doc, float freq, float docLen)</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.Explanation.html">Explanation</a></td> |
| <td><span class="parametername">expl</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Search.Similarities.BasicStats.html">BasicStats</a></td> |
| <td><span class="parametername">stats</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Int32</span></td> |
| <td><span class="parametername">doc</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Single</span></td> |
| <td><span class="parametername">freq</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Single</span></td> |
| <td><span class="parametername">docLen</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="overrides">Overrides</h5> |
| <div><a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_Explain_Lucene_Net_Search_Explanation_Lucene_Net_Search_Similarities_BasicStats_System_Int32_System_Single_System_Single_">SimilarityBase.Explain(Explanation, BasicStats, Int32, Single, Single)</a></div> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_DFRSimilarity_Score_Lucene_Net_Search_Similarities_BasicStats_System_Single_System_Single_.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.DFRSimilarity.Score(Lucene.Net.Search.Similarities.BasicStats%2CSystem.Single%2CSystem.Single)%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> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Search/Similarities/DFRSimilarity.cs/#L122">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Similarities_DFRSimilarity_Score_" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.Score*"></a> |
| <h4 id="Lucene_Net_Search_Similarities_DFRSimilarity_Score_Lucene_Net_Search_Similarities_BasicStats_System_Single_System_Single_" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.Score(Lucene.Net.Search.Similarities.BasicStats,System.Single,System.Single)">Score(BasicStats, Single, Single)</h4> |
| <div class="markdown level1 summary"></div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public override float Score(BasicStats stats, float freq, float docLen)</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.Similarities.BasicStats.html">BasicStats</a></td> |
| <td><span class="parametername">stats</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Single</span></td> |
| <td><span class="parametername">freq</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Single</span></td> |
| <td><span class="parametername">docLen</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><span class="xref">System.Single</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="overrides">Overrides</h5> |
| <div><a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_Score_Lucene_Net_Search_Similarities_BasicStats_System_Single_System_Single_">SimilarityBase.Score(BasicStats, Single, Single)</a></div> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_DFRSimilarity_ToString.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.DFRSimilarity.ToString%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> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Search/Similarities/DFRSimilarity.cs/#L142">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Similarities_DFRSimilarity_ToString_" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.ToString*"></a> |
| <h4 id="Lucene_Net_Search_Similarities_DFRSimilarity_ToString" data-uid="Lucene.Net.Search.Similarities.DFRSimilarity.ToString">ToString()</h4> |
| <div class="markdown level1 summary"></div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public override string ToString()</code></pre> |
| </div> |
| <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><span class="xref">System.String</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="overrides">Overrides</h5> |
| <div><a class="xref" href="Lucene.Net.Search.Similarities.SimilarityBase.html#Lucene_Net_Search_Similarities_SimilarityBase_ToString">SimilarityBase.ToString()</a></div> |
| <h3 id="seealso">See Also</h3> |
| <div class="seealso"> |
| <div><a class="xref" href="Lucene.Net.Search.Similarities.BasicModel.html">BasicModel</a></div> |
| <div><a class="xref" href="Lucene.Net.Search.Similarities.AfterEffect.html">AfterEffect</a></div> |
| <div><a class="xref" href="Lucene.Net.Search.Similarities.Normalization.html">Normalization</a></div> |
| </div> |
| </article> |
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