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<article class="content wrap" id="_content" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester">
<h1 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester" class="text-break">Class FreeTextSuggester
</h1>
<div class="markdown level0 summary"><p>Builds an ngram model from the text sent to <a class="xref" href="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.html#Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_Build_Lucene_Net_Search_Suggest_IInputIterator_System_Double_">Build(IInputIterator, Double)</a>
and predicts based on the last grams-1 tokens in
the request sent to <a class="xref" href="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.html#Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DoLookup_System_String_System_Collections_Generic_IEnumerable_Lucene_Net_Util_BytesRef__System_Boolean_System_Int32_">DoLookup(String, IEnumerable&lt;BytesRef&gt;, Boolean, Int32)</a>. This tries to
handle the &quot;long tail&quot; of suggestions for when the
incoming query is a never before seen query string.</p>
<p>Likely this suggester would only be used as a
fallback, when the primary suggester fails to find
any suggestions.
</p>
<p>Note that the weight for each suggestion is unused,
and the suggestions are the analyzed forms (so your
analysis process should normally be very &quot;light&quot;).
</p>
<p>This uses the stupid backoff language model to smooth
scores across ngram models; see
<a href="http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.76.1126">
&quot;Large language models in machine translation&quot;</a> for details.
</p>
<p> From <a class="xref" href="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.html#Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DoLookup_System_String_System_Collections_Generic_IEnumerable_Lucene_Net_Util_BytesRef__System_Boolean_System_Int32_">DoLookup(String, IEnumerable&lt;BytesRef&gt;, Boolean, Int32)</a>, the key of each result is the
ngram token; the value is <span class="xref">System.Int64.MaxValue</span> * score (fixed
point, cast to long). Divide by <span class="xref">System.Int64.MaxValue</span> to get
the score back, which ranges from 0.0 to 1.0.
<code>onlyMorePopular</code> is unused.
@lucene.experimental
</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"><a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html">Lookup</a></div>
<div class="level2"><span class="xref">FreeTextSuggester</span></div>
</div>
<div class="inheritedMembers">
<h5>Inherited Members</h5>
<div>
<a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html#Lucene_Net_Search_Suggest_Lookup_CHARSEQUENCE_COMPARER">Lookup.CHARSEQUENCE_COMPARER</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html#Lucene_Net_Search_Suggest_Lookup_Build_Lucene_Net_Search_Spell_IDictionary_">Lookup.Build(IDictionary)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html#Lucene_Net_Search_Suggest_Lookup_Load_System_IO_Stream_">Lookup.Load(Stream)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html#Lucene_Net_Search_Suggest_Lookup_Store_System_IO_Stream_">Lookup.Store(Stream)</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>
<span class="xref">System.Object.ToString()</span>
</div>
</div>
<h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Search.Suggest.Analyzing.html">Lucene.Net.Search.Suggest.Analyzing</a></h6>
<h6><strong>Assembly</strong>: Lucene.Net.Suggest.dll</h6>
<h5 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_syntax">Syntax</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public class FreeTextSuggester : Lookup</code></pre>
</div>
<h3 id="constructors">Constructors
</h3>
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<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester__ctor_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.#ctor*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester__ctor_Lucene_Net_Analysis_Analyzer_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.#ctor(Lucene.Net.Analysis.Analyzer)">FreeTextSuggester(Analyzer)</h4>
<div class="markdown level1 summary"><p>Instantiate, using the provided analyzer for both
indexing and lookup, using bigram model by default. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public FreeTextSuggester(Analyzer analyzer)</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">Lucene.Net.Analysis.Analyzer</span></td>
<td><span class="parametername">analyzer</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester__ctor_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.#ctor*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester__ctor_Lucene_Net_Analysis_Analyzer_Lucene_Net_Analysis_Analyzer_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.#ctor(Lucene.Net.Analysis.Analyzer,Lucene.Net.Analysis.Analyzer)">FreeTextSuggester(Analyzer, Analyzer)</h4>
<div class="markdown level1 summary"><p>Instantiate, using the provided indexing and lookup
analyzers, using bigram model by default. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public FreeTextSuggester(Analyzer indexAnalyzer, Analyzer queryAnalyzer)</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">Lucene.Net.Analysis.Analyzer</span></td>
<td><span class="parametername">indexAnalyzer</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">Lucene.Net.Analysis.Analyzer</span></td>
<td><span class="parametername">queryAnalyzer</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester__ctor_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.#ctor*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester__ctor_Lucene_Net_Analysis_Analyzer_Lucene_Net_Analysis_Analyzer_System_Int32_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.#ctor(Lucene.Net.Analysis.Analyzer,Lucene.Net.Analysis.Analyzer,System.Int32)">FreeTextSuggester(Analyzer, Analyzer, Int32)</h4>
<div class="markdown level1 summary"><p>Instantiate, using the provided indexing and lookup
analyzers, with the specified model (2
= bigram, 3 = trigram, etc.). </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public FreeTextSuggester(Analyzer indexAnalyzer, Analyzer queryAnalyzer, int grams)</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">Lucene.Net.Analysis.Analyzer</span></td>
<td><span class="parametername">indexAnalyzer</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">Lucene.Net.Analysis.Analyzer</span></td>
<td><span class="parametername">queryAnalyzer</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">grams</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester__ctor_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.#ctor*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester__ctor_Lucene_Net_Analysis_Analyzer_Lucene_Net_Analysis_Analyzer_System_Int32_System_Byte_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.#ctor(Lucene.Net.Analysis.Analyzer,Lucene.Net.Analysis.Analyzer,System.Int32,System.Byte)">FreeTextSuggester(Analyzer, Analyzer, Int32, Byte)</h4>
<div class="markdown level1 summary"><p>Instantiate, using the provided indexing and lookup
analyzers, and specified model (2 = bigram, 3 =
trigram ,etc.). The <code data-dev-comment-type="paramref" class="paramref">separator</code> is passed to <span class="xref">Lucene.Net.Analysis.Shingle.ShingleFilter.SetTokenSeparator(System.String)</span>
to join multiple
tokens into a single ngram token; it must be an ascii
(7-bit-clean) byte. No input tokens should have this
byte, otherwise <span class="xref">System.ArgumentException</span> is
thrown. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public FreeTextSuggester(Analyzer indexAnalyzer, Analyzer queryAnalyzer, int grams, byte separator)</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">Lucene.Net.Analysis.Analyzer</span></td>
<td><span class="parametername">indexAnalyzer</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">Lucene.Net.Analysis.Analyzer</span></td>
<td><span class="parametername">queryAnalyzer</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">grams</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Byte</span></td>
<td><span class="parametername">separator</span></td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="fields">Fields
</h3>
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<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_ALPHA" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.ALPHA">ALPHA</h4>
<div class="markdown level1 summary"><p>The constant used for backoff smoothing; during
lookup, this means that if a given trigram did not
occur, and we backoff to the bigram, the overall score
will be 0.4 times what the bigram model would have
assigned. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public const double ALPHA = 0.4</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><span class="xref">System.Double</span></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_CODEC_NAME" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.CODEC_NAME">CODEC_NAME</h4>
<div class="markdown level1 summary"><p>Codec name used in the header for the saved model. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public const string CODEC_NAME = &quot;freetextsuggest&quot;</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><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DEFAULT_GRAMS" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.DEFAULT_GRAMS">DEFAULT_GRAMS</h4>
<div class="markdown level1 summary"><p>By default we use a bigram model. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public const int DEFAULT_GRAMS = 2</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><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
</table>
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</span>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DEFAULT_SEPARATOR" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.DEFAULT_SEPARATOR">DEFAULT_SEPARATOR</h4>
<div class="markdown level1 summary"><p>The default character used to join multiple tokens
into a single ngram token. The input tokens produced
by the analyzer must not contain this character. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public const byte DEFAULT_SEPARATOR = 30</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><span class="xref">System.Byte</span></td>
<td></td>
</tr>
</tbody>
</table>
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</span>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_VERSION_CURRENT" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.VERSION_CURRENT">VERSION_CURRENT</h4>
<div class="markdown level1 summary"><p>Current version of the the saved model file format. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public const int VERSION_CURRENT = 0</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><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
</table>
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</span>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_VERSION_START" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.VERSION_START">VERSION_START</h4>
<div class="markdown level1 summary"><p>Initial version of the the saved model file format. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public const int VERSION_START = 0</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><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="properties">Properties
</h3>
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</span>
<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_Count_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.Count*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_Count" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.Count">Count</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 long Count { 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.Int64</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html#Lucene_Net_Search_Suggest_Lookup_Count">Lookup.Count</a></div>
<h3 id="methods">Methods
</h3>
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<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_Build_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.Build*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_Build_Lucene_Net_Search_Suggest_IInputIterator_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.Build(Lucene.Net.Search.Suggest.IInputIterator)">Build(IInputIterator)</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 void Build(IInputIterator iterator)</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.Suggest.IInputIterator.html">IInputIterator</a></td>
<td><span class="parametername">iterator</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html#Lucene_Net_Search_Suggest_Lookup_Build_Lucene_Net_Search_Suggest_IInputIterator_">Lookup.Build(IInputIterator)</a></div>
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</span>
<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_Build_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.Build*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_Build_Lucene_Net_Search_Suggest_IInputIterator_System_Double_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.Build(Lucene.Net.Search.Suggest.IInputIterator,System.Double)">Build(IInputIterator, Double)</h4>
<div class="markdown level1 summary"><p>Build the suggest index, using up to the specified
amount of temporary RAM while building. Note that
the weights for the suggestions are ignored. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public virtual void Build(IInputIterator iterator, double ramBufferSizeMB)</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.Suggest.IInputIterator.html">IInputIterator</a></td>
<td><span class="parametername">iterator</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Double</span></td>
<td><span class="parametername">ramBufferSizeMB</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DoLookup_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.DoLookup*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DoLookup_System_String_System_Boolean_System_Int32_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.DoLookup(System.String,System.Boolean,System.Int32)">DoLookup(String, Boolean, Int32)</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 IList&lt;Lookup.LookupResult&gt; DoLookup(string key, bool onlyMorePopular, int num)</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">key</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Boolean</span></td>
<td><span class="parametername">onlyMorePopular</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">num</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.Collections.Generic.IList</span>&lt;<a class="xref" href="Lucene.Net.Search.Suggest.Lookup.LookupResult.html">Lookup.LookupResult</a>&gt;</td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html#Lucene_Net_Search_Suggest_Lookup_DoLookup_System_String_System_Boolean_System_Int32_">Lookup.DoLookup(String, Boolean, Int32)</a></div>
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<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DoLookup_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.DoLookup*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DoLookup_System_String_System_Collections_Generic_IEnumerable_Lucene_Net_Util_BytesRef__System_Boolean_System_Int32_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.DoLookup(System.String,System.Collections.Generic.IEnumerable{Lucene.Net.Util.BytesRef},System.Boolean,System.Int32)">DoLookup(String, IEnumerable&lt;BytesRef&gt;, Boolean, Int32)</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 IList&lt;Lookup.LookupResult&gt; DoLookup(string key, IEnumerable&lt;BytesRef&gt; contexts, bool onlyMorePopular, int num)</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">key</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Collections.Generic.IEnumerable</span>&lt;<span class="xref">Lucene.Net.Util.BytesRef</span>&gt;</td>
<td><span class="parametername">contexts</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Boolean</span></td>
<td><span class="parametername">onlyMorePopular</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">num</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.Collections.Generic.IList</span>&lt;<a class="xref" href="Lucene.Net.Search.Suggest.Lookup.LookupResult.html">Lookup.LookupResult</a>&gt;</td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html#Lucene_Net_Search_Suggest_Lookup_DoLookup_System_String_System_Collections_Generic_IEnumerable_Lucene_Net_Util_BytesRef__System_Boolean_System_Int32_">Lookup.DoLookup(String, IEnumerable&lt;BytesRef&gt;, Boolean, Int32)</a></div>
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<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DoLookup_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.DoLookup*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DoLookup_System_String_System_Collections_Generic_IEnumerable_Lucene_Net_Util_BytesRef__System_Int32_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.DoLookup(System.String,System.Collections.Generic.IEnumerable{Lucene.Net.Util.BytesRef},System.Int32)">DoLookup(String, IEnumerable&lt;BytesRef&gt;, Int32)</h4>
<div class="markdown level1 summary"><p>Retrieve suggestions.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public virtual IList&lt;Lookup.LookupResult&gt; DoLookup(string key, IEnumerable&lt;BytesRef&gt; contexts, int num)</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">key</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Collections.Generic.IEnumerable</span>&lt;<span class="xref">Lucene.Net.Util.BytesRef</span>&gt;</td>
<td><span class="parametername">contexts</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">num</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.Collections.Generic.IList</span>&lt;<a class="xref" href="Lucene.Net.Search.Suggest.Lookup.LookupResult.html">Lookup.LookupResult</a>&gt;</td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DoLookup_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.DoLookup*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_DoLookup_System_String_System_Int32_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.DoLookup(System.String,System.Int32)">DoLookup(String, Int32)</h4>
<div class="markdown level1 summary"><p>Lookup, without any context. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public virtual IList&lt;Lookup.LookupResult&gt; DoLookup(string key, int num)</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">key</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">num</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.Collections.Generic.IList</span>&lt;<a class="xref" href="Lucene.Net.Search.Suggest.Lookup.LookupResult.html">Lookup.LookupResult</a>&gt;</td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_Get_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.Get*"></a>
<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_Get_System_String_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.Get(System.String)">Get(String)</h4>
<div class="markdown level1 summary"><p>Returns the weight associated with an input string,
or null if it does not exist.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public virtual object Get(string key)</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">key</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.Object</span></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_GetSizeInBytes" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.GetSizeInBytes">GetSizeInBytes()</h4>
<div class="markdown level1 summary"><p>Returns byte size of the underlying FST. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public override long GetSizeInBytes()</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.Int64</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html#Lucene_Net_Search_Suggest_Lookup_GetSizeInBytes">Lookup.GetSizeInBytes()</a></div>
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<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_Load_Lucene_Net_Store_DataInput_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.Load(Lucene.Net.Store.DataInput)">Load(DataInput)</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 bool Load(DataInput input)</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">Lucene.Net.Store.DataInput</span></td>
<td><span class="parametername">input</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.Boolean</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html#Lucene_Net_Search_Suggest_Lookup_Load_Lucene_Net_Store_DataInput_">Lookup.Load(DataInput)</a></div>
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<h4 id="Lucene_Net_Search_Suggest_Analyzing_FreeTextSuggester_Store_Lucene_Net_Store_DataOutput_" data-uid="Lucene.Net.Search.Suggest.Analyzing.FreeTextSuggester.Store(Lucene.Net.Store.DataOutput)">Store(DataOutput)</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 bool Store(DataOutput output)</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">Lucene.Net.Store.DataOutput</span></td>
<td><span class="parametername">output</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.Boolean</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="Lucene.Net.Search.Suggest.Lookup.html#Lucene_Net_Search_Suggest_Lookup_Store_Lucene_Net_Store_DataOutput_">Lookup.Store(DataOutput)</a></div>
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