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| <h1 id="Lucene_Net_Search_Similarities_Lambda" data-uid="Lucene.Net.Search.Similarities.Lambda" class="text-break">Class Lambda |
| </h1> |
| <div class="markdown level0 summary"><p>The <em>lambda (λ<sub>w</sub>)</em> parameter in information-based |
| models. |
| <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">Lambda</span></div> |
| <div class="level2"><a class="xref" href="Lucene.Net.Search.Similarities.LambdaDF.html">LambdaDF</a></div> |
| <div class="level2"><a class="xref" href="Lucene.Net.Search.Similarities.LambdaTTF.html">LambdaTTF</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.GetHashCode()</span> |
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| <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_Lambda_syntax">Syntax</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public abstract class Lambda</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-beta00009/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_Lambda__ctor.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.Lambda.%23ctor%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/Shazwazza/lucenenet/blob/docs-poc/src/Lucene.Net/Search/Similarities/Lambda.cs/#L33">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Similarities_Lambda__ctor_" data-uid="Lucene.Net.Search.Similarities.Lambda.#ctor*"></a> |
| <h4 id="Lucene_Net_Search_Similarities_Lambda__ctor" data-uid="Lucene.Net.Search.Similarities.Lambda.#ctor">Lambda()</h4> |
| <div class="markdown level1 summary"><p>Sole constructor. (For invocation by subclass |
| constructors, typically implicit.)</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public Lambda()</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-beta00009/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_Lambda_CalculateLambda_Lucene_Net_Search_Similarities_BasicStats_.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.Lambda.CalculateLambda(Lucene.Net.Search.Similarities.BasicStats)%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/Shazwazza/lucenenet/blob/docs-poc/src/Lucene.Net/Search/Similarities/Lambda.cs/#L39">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Similarities_Lambda_CalculateLambda_" data-uid="Lucene.Net.Search.Similarities.Lambda.CalculateLambda*"></a> |
| <h4 id="Lucene_Net_Search_Similarities_Lambda_CalculateLambda_Lucene_Net_Search_Similarities_BasicStats_" data-uid="Lucene.Net.Search.Similarities.Lambda.CalculateLambda(Lucene.Net.Search.Similarities.BasicStats)">CalculateLambda(BasicStats)</h4> |
| <div class="markdown level1 summary"><p>Computes the lambda parameter. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public abstract float CalculateLambda(BasicStats stats)</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> |
| </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> |
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| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00009/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_Lambda_Explain_Lucene_Net_Search_Similarities_BasicStats_.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.Lambda.Explain(Lucene.Net.Search.Similarities.BasicStats)%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/Shazwazza/lucenenet/blob/docs-poc/src/Lucene.Net/Search/Similarities/Lambda.cs/#L43">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Similarities_Lambda_Explain_" data-uid="Lucene.Net.Search.Similarities.Lambda.Explain*"></a> |
| <h4 id="Lucene_Net_Search_Similarities_Lambda_Explain_Lucene_Net_Search_Similarities_BasicStats_" data-uid="Lucene.Net.Search.Similarities.Lambda.Explain(Lucene.Net.Search.Similarities.BasicStats)">Explain(BasicStats)</h4> |
| <div class="markdown level1 summary"><p>Explains the lambda parameter. </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(BasicStats stats)</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> |
| </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> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00009/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Similarities_Lambda_ToString.md&value=---%0Auid%3A%20Lucene.Net.Search.Similarities.Lambda.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/Shazwazza/lucenenet/blob/docs-poc/src/Lucene.Net/Search/Similarities/Lambda.cs/#L51">View Source</a> |
| </span> |
| <a id="Lucene_Net_Search_Similarities_Lambda_ToString_" data-uid="Lucene.Net.Search.Similarities.Lambda.ToString*"></a> |
| <h4 id="Lucene_Net_Search_Similarities_Lambda_ToString" data-uid="Lucene.Net.Search.Similarities.Lambda.ToString">ToString()</h4> |
| <div class="markdown level1 summary"><p>Subclasses must override this method to return the code of the lambda |
| formula. Since the original paper is not very clear on this matter, and |
| also uses the DFR naming scheme incorrectly, the codes here were chosen |
| arbitrarily.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public abstract 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><span class="xref">System.Object.ToString()</span></div> |
| <h3 id="seealso">See Also</h3> |
| <div class="seealso"> |
| <div><a class="xref" href="Lucene.Net.Search.Similarities.IBSimilarity.html">IBSimilarity</a></div> |
| </div> |
| </article> |
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