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| <h1 id="Lucene_Net_Analysis_Phonetic_Language_Nysiis" data-uid="Lucene.Net.Analysis.Phonetic.Language.Nysiis" class="text-break">Class Nysiis |
| </h1> |
| <div class="markdown level0 summary"><p>Encodes a string into a NYSIIS value. NYSIIS is an encoding used to relate similar names, but can also be used as a |
| general purpose scheme to find word with similar phonemes.</p> |
| </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">Nysiis</span></div> |
| </div> |
| <div classs="implements"> |
| <h5>Implements</h5> |
| <div><a class="xref" href="Lucene.Net.Analysis.Phonetic.Language.IStringEncoder.html">IStringEncoder</a></div> |
| </div> |
| <div class="inheritedMembers"> |
| <h5>Inherited Members</h5> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object)</span> |
| </div> |
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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.Analysis.Phonetic.Language.html">Lucene.Net.Analysis.Phonetic.Language</a></h6> |
| <h6><strong>Assembly</strong>: Lucene.Net.Analysis.Phonetic.dll</h6> |
| <h5 id="Lucene_Net_Analysis_Phonetic_Language_Nysiis_syntax">Syntax</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public class Nysiis : IStringEncoder</code></pre> |
| </div> |
| <h5 id="Lucene_Net_Analysis_Phonetic_Language_Nysiis_remarks"><strong>Remarks</strong></h5> |
| <div class="markdown level0 remarks"><p>NYSIIS features an accuracy increase of 2.7% over the traditional Soundex algorithm. |
| <p> |
| Algorithm description: |
| <ol><li>Transcode first characters of name |
| <ol><li>MAC -> MCC</li><li>KN -> NN</li><li>K -> C</li><li>PH -> FF</li><li>PF -> FF</li><li>SCH -> SSS</li></ol> |
| </li><li>Transcode last characters of name |
| <ol><li>EE, IE -> Y</li><li>DT,RT,RD,NT,ND -> D</li></ol> |
| </li><li>First character of key = first character of name</li><li>Transcode remaining characters by following these rules, incrementing by one character each time |
| <ol><li>EV -> AF else A,E,I,O,U -> A</li><li>Q -> G</li><li>Z -> S</li><li>M -> N</li><li>KN -> N else K -> C</li><li>SCH -> SSS</li><li>PH -> FF</li><li>H -> If previous or next is nonvowel, previous</li><li>W -> If previous is vowel, previous</li><li>Add current to key if current != last key character</li></ol> |
| </li><li>If last character is S, remove it</li><li>If last characters are AY, replace with Y</li><li>If last character is A, remove it</li><li>Collapse all strings of repeated characters</li><li>Add original first character of name as first character of key</li></ol> |
| <p> |
| This class is immutable and thread-safe. |
| <p> |
| See: <a href="http://en.wikipedia.org/wiki/NYSIIS">NYSIIS on Wikipedia</a> |
| <p> |
| See: <a href="http://www.dropby.com/NYSIIS.html">NYSIIS on dropby.com</a> |
| <p> |
| since 1.7</p> |
| </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_Analysis_Phonetic_Language_Nysiis__ctor.md&value=---%0Auid%3A%20Lucene.Net.Analysis.Phonetic.Language.Nysiis.%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> |
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| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net.Analysis.Phonetic/Language/Nysiis.cs/#L219">View Source</a> |
| </span> |
| <a id="Lucene_Net_Analysis_Phonetic_Language_Nysiis__ctor_" data-uid="Lucene.Net.Analysis.Phonetic.Language.Nysiis.#ctor*"></a> |
| <h4 id="Lucene_Net_Analysis_Phonetic_Language_Nysiis__ctor" data-uid="Lucene.Net.Analysis.Phonetic.Language.Nysiis.#ctor">Nysiis()</h4> |
| <div class="markdown level1 summary"><p>Creates an instance of the <a class="xref" href="Lucene.Net.Analysis.Phonetic.Language.Nysiis.html">Nysiis</a> encoder with strict mode (original form), |
| i.e. encoded strings have a maximum length of 6.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public Nysiis()</code></pre> |
| </div> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
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| </span> |
| <a id="Lucene_Net_Analysis_Phonetic_Language_Nysiis__ctor_" data-uid="Lucene.Net.Analysis.Phonetic.Language.Nysiis.#ctor*"></a> |
| <h4 id="Lucene_Net_Analysis_Phonetic_Language_Nysiis__ctor_System_Boolean_" data-uid="Lucene.Net.Analysis.Phonetic.Language.Nysiis.#ctor(System.Boolean)">Nysiis(Boolean)</h4> |
| <div class="markdown level1 summary"><p>Create an instance of the <a class="xref" href="Lucene.Net.Analysis.Phonetic.Language.Nysiis.html">Nysiis</a> encoder with the specified strict mode: |
| <ul><li><code>true</code>:encoded strings have a maximum length of 6</li><li><code>false</code>:encoded strings may have arbitrary length</li></ul></p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public Nysiis(bool strict)</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><span class="xref">System.Boolean</span></td> |
| <td><span class="parametername">strict</span></td> |
| <td><p>The strict mode.</p> |
| </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_Analysis_Phonetic_Language_Nysiis_IsStrict.md&value=---%0Auid%3A%20Lucene.Net.Analysis.Phonetic.Language.Nysiis.IsStrict%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_Analysis_Phonetic_Language_Nysiis_IsStrict_" data-uid="Lucene.Net.Analysis.Phonetic.Language.Nysiis.IsStrict*"></a> |
| <h4 id="Lucene_Net_Analysis_Phonetic_Language_Nysiis_IsStrict" data-uid="Lucene.Net.Analysis.Phonetic.Language.Nysiis.IsStrict">IsStrict</h4> |
| <div class="markdown level1 summary"><p>Indicates the strict mode for this <a class="xref" href="Lucene.Net.Analysis.Phonetic.Language.Nysiis.html">Nysiis</a> encoder. |
| <code>true</code> if the encoder is configured for strict mode, <code>false</code> otherwise.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public virtual bool IsStrict { 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><span class="xref">System.Boolean</span></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_Analysis_Phonetic_Language_Nysiis_Encode_System_String_.md&value=---%0Auid%3A%20Lucene.Net.Analysis.Phonetic.Language.Nysiis.Encode(System.String)%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_Analysis_Phonetic_Language_Nysiis_Encode_" data-uid="Lucene.Net.Analysis.Phonetic.Language.Nysiis.Encode*"></a> |
| <h4 id="Lucene_Net_Analysis_Phonetic_Language_Nysiis_Encode_System_String_" data-uid="Lucene.Net.Analysis.Phonetic.Language.Nysiis.Encode(System.String)">Encode(String)</h4> |
| <div class="markdown level1 summary"><p>Encodes a string using the NYSIIS algorithm.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public virtual string Encode(string str)</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><span class="xref">System.String</span></td> |
| <td><span class="parametername">str</span></td> |
| <td><p>A string object to encode.</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><span class="xref">System.String</span></td> |
| <td><p>A <a class="xref" href="Lucene.Net.Analysis.Phonetic.Language.Nysiis.html">Nysiis</a> code corresponding to the string supplied.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="exceptions">Exceptions</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Condition</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.ArgumentException</span></td> |
| <td><p>If a character is not mapped.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
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| <span class="divider">|</span> |
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| </span> |
| <a id="Lucene_Net_Analysis_Phonetic_Language_Nysiis_GetNysiis_" data-uid="Lucene.Net.Analysis.Phonetic.Language.Nysiis.GetNysiis*"></a> |
| <h4 id="Lucene_Net_Analysis_Phonetic_Language_Nysiis_GetNysiis_System_String_" data-uid="Lucene.Net.Analysis.Phonetic.Language.Nysiis.GetNysiis(System.String)">GetNysiis(String)</h4> |
| <div class="markdown level1 summary"><p>Retrieves the NYSIIS code for a given string.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public virtual string GetNysiis(string str)</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><span class="xref">System.String</span></td> |
| <td><span class="parametername">str</span></td> |
| <td><p>String to encode using the NYSIIS algorithm.</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><span class="xref">System.String</span></td> |
| <td><p>A NYSIIS code for the string supplied.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h3 id="implements">Implements</h3> |
| <div> |
| <a class="xref" href="Lucene.Net.Analysis.Phonetic.Language.IStringEncoder.html">IStringEncoder</a> |
| </div> |
| <h3 id="seealso">See Also</h3> |
| <div class="seealso"> |
| <div><a class="xref" href="Lucene.Net.Analysis.Phonetic.Language.Soundex.html">Soundex</a></div> |
| </div> |
| </article> |
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