docs/2.3.3/apidocs/opennlp-tools/opennlp/tools/ml/TrainerFactory.html - opennlp-site - Git at Google

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 <div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">opennlp.tools.ml</a></div>
 <h1 title="Class TrainerFactory" class="title">Class TrainerFactory</h1>
 </div>
 <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
 <div class="inheritance">opennlp.tools.ml.TrainerFactory</div>
 </div>
 <section class="class-description" id="class-description">
 <hr>
 <div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">TrainerFactory</span>
 <span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></span></div>
 <div class="block">A factory to initialize <a href="../commons/Trainer.html" title="interface in opennlp.tools.commons"><code>Trainer</code></a> instances depending on a trainer type
  configured via <a href="../util/TrainingParameters.html" title="class in opennlp.tools.util"><code>TrainingParameters</code></a>.</div>
 </section>
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 <!-- ======== NESTED CLASS SUMMARY ======== -->
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 <h2>Nested Class Summary</h2>
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 <div class="summary-table three-column-summary">
 <div class="table-header col-first">Modifier and Type</div>
 <div class="table-header col-second">Class</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color"><code>static enum&nbsp;</code></div>
 <div class="col-second even-row-color"><code><a href="TrainerFactory.TrainerType.html" class="type-name-link" title="enum class in opennlp.tools.ml">TrainerFactory.TrainerType</a></code></div>
 <div class="col-last even-row-color">&nbsp;</div>
 </div>
 </section>
 </li>
 <!-- ======== CONSTRUCTOR SUMMARY ======== -->
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 <section class="constructor-summary" id="constructor-summary">
 <h2>Constructor Summary</h2>
 <div class="caption"><span>Constructors</span></div>
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 <div class="table-header col-first">Constructor</div>
 <div class="table-header col-last">Description</div>
 <div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E()" class="member-name-link">TrainerFactory</a>()</code></div>
 <div class="col-last even-row-color">&nbsp;</div>
 </div>
 </section>
 </li>
 <!-- ========== METHOD SUMMARY =========== -->
 <li>
 <section class="method-summary" id="method-summary">
 <h2>Method Summary</h2>
 <div id="method-summary-table">
 <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div>
 <div id="method-summary-table.tabpanel" role="tabpanel">
 <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
 <div class="table-header col-first">Modifier and Type</div>
 <div class="table-header col-second">Method</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static &lt;T&gt;&nbsp;<a href="EventModelSequenceTrainer.html" title="interface in opennlp.tools.ml">EventModelSequenceTrainer</a>&lt;T&gt;</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#getEventModelSequenceTrainer(opennlp.tools.util.TrainingParameters,java.util.Map)" class="member-name-link">getEventModelSequenceTrainer</a><wbr>(<a href="../util/TrainingParameters.html" title="class in opennlp.tools.util">TrainingParameters</a>&nbsp;trainParams,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&gt;&nbsp;reportMap)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Retrieves an <a href="EventModelSequenceTrainer.html" title="interface in opennlp.tools.ml"><code>EventModelSequenceTrainer</code></a> that fits the given parameters.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="EventTrainer.html" title="interface in opennlp.tools.ml">EventTrainer</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#getEventTrainer(opennlp.tools.util.TrainingParameters,java.util.Map)" class="member-name-link">getEventTrainer</a><wbr>(<a href="../util/TrainingParameters.html" title="class in opennlp.tools.util">TrainingParameters</a>&nbsp;trainParams,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&gt;&nbsp;reportMap)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Retrieves an <a href="EventTrainer.html" title="interface in opennlp.tools.ml"><code>EventTrainer</code></a> that fits the given parameters.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="SequenceTrainer.html" title="interface in opennlp.tools.ml">SequenceTrainer</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#getSequenceModelTrainer(opennlp.tools.util.TrainingParameters,java.util.Map)" class="member-name-link">getSequenceModelTrainer</a><wbr>(<a href="../util/TrainingParameters.html" title="class in opennlp.tools.util">TrainingParameters</a>&nbsp;trainParams,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&gt;&nbsp;reportMap)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Retrieves a <a href="SequenceTrainer.html" title="interface in opennlp.tools.ml"><code>SequenceTrainer</code></a> that fits the given parameters.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="TrainerFactory.TrainerType.html" title="enum class in opennlp.tools.ml">TrainerFactory.TrainerType</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#getTrainerType(opennlp.tools.util.TrainingParameters)" class="member-name-link">getTrainerType</a><wbr>(<a href="../util/TrainingParameters.html" title="class in opennlp.tools.util">TrainingParameters</a>&nbsp;trainParams)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Determines the <a href="TrainerFactory.TrainerType.html" title="enum class in opennlp.tools.ml"><code>TrainerFactory.TrainerType</code></a> based on the
  <a href="AbstractTrainer.html#ALGORITHM_PARAM"><code>AbstractTrainer.ALGORITHM_PARAM</code></a> value.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static boolean</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#isValid(opennlp.tools.util.TrainingParameters)" class="member-name-link">isValid</a><wbr>(<a href="../util/TrainingParameters.html" title="class in opennlp.tools.util">TrainingParameters</a>&nbsp;trainParams)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
 </div>
 </div>
 </div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
 <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div>
 </section>
 </li>
 </ul>
 </section>
 <section class="details">
 <ul class="details-list">
 <!-- ========= CONSTRUCTOR DETAIL ======== -->
 <li>
 <section class="constructor-details" id="constructor-detail">
 <h2>Constructor Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="&lt;init&gt;()">
 <h3>TrainerFactory</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">TrainerFactory</span>()</div>
 </section>
 </li>
 </ul>
 </section>
 </li>
 <!-- ============ METHOD DETAIL ========== -->
 <li>
 <section class="method-details" id="method-detail">
 <h2>Method Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="getTrainerType(opennlp.tools.util.TrainingParameters)">
 <h3>getTrainerType</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="TrainerFactory.TrainerType.html" title="enum class in opennlp.tools.ml">TrainerFactory.TrainerType</a></span>&nbsp;<span class="element-name">getTrainerType</span><wbr><span class="parameters">(<a href="../util/TrainingParameters.html" title="class in opennlp.tools.util">TrainingParameters</a>&nbsp;trainParams)</span></div>
 <div class="block">Determines the <a href="TrainerFactory.TrainerType.html" title="enum class in opennlp.tools.ml"><code>TrainerFactory.TrainerType</code></a> based on the
  <a href="AbstractTrainer.html#ALGORITHM_PARAM"><code>AbstractTrainer.ALGORITHM_PARAM</code></a> value.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>trainParams</code> - - A mapping of <a href="../util/TrainingParameters.html" title="class in opennlp.tools.util"><code>training parameters</code></a>.</dd>
 <dt>Returns:</dt>
 <dd>The <a href="TrainerFactory.TrainerType.html" title="enum class in opennlp.tools.ml"><code>TrainerFactory.TrainerType</code></a> or <code>null</code> if the type couldn't be determined.</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getSequenceModelTrainer(opennlp.tools.util.TrainingParameters,java.util.Map)">
 <h3>getSequenceModelTrainer</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="SequenceTrainer.html" title="interface in opennlp.tools.ml">SequenceTrainer</a></span>&nbsp;<span class="element-name">getSequenceModelTrainer</span><wbr><span class="parameters">(<a href="../util/TrainingParameters.html" title="class in opennlp.tools.util">TrainingParameters</a>&nbsp;trainParams,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&gt;&nbsp;reportMap)</span></div>
 <div class="block">Retrieves a <a href="SequenceTrainer.html" title="interface in opennlp.tools.ml"><code>SequenceTrainer</code></a> that fits the given parameters.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>trainParams</code> - The <a href="../util/TrainingParameters.html" title="class in opennlp.tools.util"><code>TrainingParameters</code></a> to check for the trainer type.
                     Note: The entry <a href="AbstractTrainer.html#ALGORITHM_PARAM"><code>AbstractTrainer.ALGORITHM_PARAM</code></a> is used
                     to determine the type.</dd>
 <dd><code>reportMap</code> - A <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link"><code>Map</code></a> that shall be used during initialization of
                   the <a href="SequenceTrainer.html" title="interface in opennlp.tools.ml"><code>SequenceTrainer</code></a>.</dd>
 <dt>Returns:</dt>
 <dd>A valid <a href="SequenceTrainer.html" title="interface in opennlp.tools.ml"><code>SequenceTrainer</code></a> for the configured <code>trainParams</code>.</dd>
 <dt>Throws:</dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/IllegalArgumentException.html" title="class or interface in java.lang" class="external-link">IllegalArgumentException</a></code> - Thrown if the trainer type could not be determined.</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getEventModelSequenceTrainer(opennlp.tools.util.TrainingParameters,java.util.Map)">
 <h3>getEventModelSequenceTrainer</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="type-parameters">&lt;T&gt;</span>&nbsp;<span class="return-type"><a href="EventModelSequenceTrainer.html" title="interface in opennlp.tools.ml">EventModelSequenceTrainer</a>&lt;T&gt;</span>&nbsp;<span class="element-name">getEventModelSequenceTrainer</span><wbr><span class="parameters">(<a href="../util/TrainingParameters.html" title="class in opennlp.tools.util">TrainingParameters</a>&nbsp;trainParams,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&gt;&nbsp;reportMap)</span></div>
 <div class="block">Retrieves an <a href="EventModelSequenceTrainer.html" title="interface in opennlp.tools.ml"><code>EventModelSequenceTrainer</code></a> that fits the given parameters.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>trainParams</code> - The <a href="../util/TrainingParameters.html" title="class in opennlp.tools.util"><code>TrainingParameters</code></a> to check for the trainer type.
                     Note: The entry <a href="AbstractTrainer.html#ALGORITHM_PARAM"><code>AbstractTrainer.ALGORITHM_PARAM</code></a> is used
                     to determine the type.</dd>
 <dd><code>reportMap</code> - A <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link"><code>Map</code></a> that shall be used during initialization of
                   the <a href="EventModelSequenceTrainer.html" title="interface in opennlp.tools.ml"><code>EventModelSequenceTrainer</code></a>.</dd>
 <dt>Returns:</dt>
 <dd>A valid <a href="EventModelSequenceTrainer.html" title="interface in opennlp.tools.ml"><code>EventModelSequenceTrainer</code></a> for the configured <code>trainParams</code>.</dd>
 <dt>Throws:</dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/IllegalArgumentException.html" title="class or interface in java.lang" class="external-link">IllegalArgumentException</a></code> - Thrown if the trainer type could not be determined.</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getEventTrainer(opennlp.tools.util.TrainingParameters,java.util.Map)">
 <h3>getEventTrainer</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="EventTrainer.html" title="interface in opennlp.tools.ml">EventTrainer</a></span>&nbsp;<span class="element-name">getEventTrainer</span><wbr><span class="parameters">(<a href="../util/TrainingParameters.html" title="class in opennlp.tools.util">TrainingParameters</a>&nbsp;trainParams,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&gt;&nbsp;reportMap)</span></div>
 <div class="block">Retrieves an <a href="EventTrainer.html" title="interface in opennlp.tools.ml"><code>EventTrainer</code></a> that fits the given parameters.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>trainParams</code> - The <a href="../util/TrainingParameters.html" title="class in opennlp.tools.util"><code>TrainingParameters</code></a> to check for the trainer type.
                     Note: The entry <a href="AbstractTrainer.html#ALGORITHM_PARAM"><code>AbstractTrainer.ALGORITHM_PARAM</code></a> is used
                     to determine the type. If the type is not defined, the
                     <a href="maxent/GISTrainer.html#MAXENT_VALUE"><code>GISTrainer.MAXENT_VALUE</code></a> will be used.</dd>
 <dd><code>reportMap</code> - A <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link"><code>Map</code></a> that shall be used during initialization of
                   the <a href="EventTrainer.html" title="interface in opennlp.tools.ml"><code>EventTrainer</code></a>.</dd>
 <dt>Returns:</dt>
 <dd>A valid <a href="EventTrainer.html" title="interface in opennlp.tools.ml"><code>EventTrainer</code></a> for the configured <code>trainParams</code>.</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="isValid(opennlp.tools.util.TrainingParameters)">
 <h3>isValid</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">isValid</span><wbr><span class="parameters">(<a href="../util/TrainingParameters.html" title="class in opennlp.tools.util">TrainingParameters</a>&nbsp;trainParams)</span></div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>trainParams</code> - The <a href="../util/TrainingParameters.html" title="class in opennlp.tools.util"><code>TrainingParameters</code></a> to validate. Must not be <code>null</code>.</dd>
 <dt>Returns:</dt>
 <dd><code>true</code> if the <code>trainParams</code> could be validated, <code>false</code> otherwise.</dd>
 </dl>
 </section>
 </li>
 </ul>
 </section>
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