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<h2 title="Class CrossValidator" class="title">Class CrossValidator</h2>
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<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li><a href="../../../../../org/apache/spark/ml/PipelineStage.html" title="class in org.apache.spark.ml">org.apache.spark.ml.PipelineStage</a></li>
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<ul class="inheritance">
<li><a href="../../../../../org/apache/spark/ml/Estimator.html" title="class in org.apache.spark.ml">org.apache.spark.ml.Estimator</a><<a href="../../../../../org/apache/spark/ml/tuning/CrossValidatorModel.html" title="class in org.apache.spark.ml.tuning">CrossValidatorModel</a>></li>
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<ul class="inheritance">
<li>org.apache.spark.ml.tuning.CrossValidator</li>
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<dt>All Implemented Interfaces:</dt>
<dd>java.io.Serializable, <a href="../../../../../org/apache/spark/Logging.html" title="interface in org.apache.spark">Logging</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html" title="interface in org.apache.spark.ml.param">Params</a>, <a href="../../../../../org/apache/spark/ml/util/Identifiable.html" title="interface in org.apache.spark.ml.util">Identifiable</a></dd>
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<pre>public class <span class="strong">CrossValidator</span>
extends <a href="../../../../../org/apache/spark/ml/Estimator.html" title="class in org.apache.spark.ml">Estimator</a><<a href="../../../../../org/apache/spark/ml/tuning/CrossValidatorModel.html" title="class in org.apache.spark.ml.tuning">CrossValidatorModel</a>>
implements <a href="../../../../../org/apache/spark/Logging.html" title="interface in org.apache.spark">Logging</a></pre>
<div class="block">:: Experimental ::
K-fold cross validation.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../serialized-form.html#org.apache.spark.ml.tuning.CrossValidator">Serialized Form</a></dd></dl>
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<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#CrossValidator()">CrossValidator</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#CrossValidator(java.lang.String)">CrossValidator</a></strong>(java.lang.String uid)</code> </td>
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<h3>Method Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span>Methods</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html" title="class in org.apache.spark.ml.tuning">CrossValidator</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#copy(org.apache.spark.ml.param.ParamMap)">copy</a></strong>(<a href="../../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a> extra)</code>
<div class="block">Creates a copy of this instance with the same UID and some extra params.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/param/Param.html" title="class in org.apache.spark.ml.param">Param</a><<a href="../../../../../org/apache/spark/ml/Estimator.html" title="class in org.apache.spark.ml">Estimator</a><?>></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#estimator()">estimator</a></strong>()</code>
<div class="block">param for the estimator to be validated</div>
</td>
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<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/param/Param.html" title="class in org.apache.spark.ml.param">Param</a><<a href="../../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a>[]></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#estimatorParamMaps()">estimatorParamMaps</a></strong>()</code>
<div class="block">param for estimator param maps</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/param/Param.html" title="class in org.apache.spark.ml.param">Param</a><<a href="../../../../../org/apache/spark/ml/evaluation/Evaluator.html" title="class in org.apache.spark.ml.evaluation">Evaluator</a>></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#evaluator()">evaluator</a></strong>()</code>
<div class="block">param for the evaluator used to select hyper-parameters that maximize the validated metric</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/tuning/CrossValidatorModel.html" title="class in org.apache.spark.ml.tuning">CrossValidatorModel</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#fit(org.apache.spark.sql.DataFrame)">fit</a></strong>(<a href="../../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> dataset)</code>
<div class="block">Fits a model to the input data.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/Estimator.html" title="class in org.apache.spark.ml">Estimator</a><?></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#getEstimator()">getEstimator</a></strong>()</code> </td>
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<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a>[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#getEstimatorParamMaps()">getEstimatorParamMaps</a></strong>()</code> </td>
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<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/evaluation/Evaluator.html" title="class in org.apache.spark.ml.evaluation">Evaluator</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#getEvaluator()">getEvaluator</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#getNumFolds()">getNumFolds</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/param/IntParam.html" title="class in org.apache.spark.ml.param">IntParam</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#numFolds()">numFolds</a></strong>()</code>
<div class="block">Param for number of folds for cross validation.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html" title="class in org.apache.spark.ml.tuning">CrossValidator</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#setEstimator(org.apache.spark.ml.Estimator)">setEstimator</a></strong>(<a href="../../../../../org/apache/spark/ml/Estimator.html" title="class in org.apache.spark.ml">Estimator</a><?> value)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html" title="class in org.apache.spark.ml.tuning">CrossValidator</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#setEstimatorParamMaps(org.apache.spark.ml.param.ParamMap[])">setEstimatorParamMaps</a></strong>(<a href="../../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a>[] value)</code> </td>
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<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html" title="class in org.apache.spark.ml.tuning">CrossValidator</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#setEvaluator(org.apache.spark.ml.evaluation.Evaluator)">setEvaluator</a></strong>(<a href="../../../../../org/apache/spark/ml/evaluation/Evaluator.html" title="class in org.apache.spark.ml.evaluation">Evaluator</a> value)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html" title="class in org.apache.spark.ml.tuning">CrossValidator</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#setNumFolds(int)">setNumFolds</a></strong>(int value)</code> </td>
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<td class="colFirst"><code><a href="../../../../../org/apache/spark/sql/types/StructType.html" title="class in org.apache.spark.sql.types">StructType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#transformSchema(org.apache.spark.sql.types.StructType)">transformSchema</a></strong>(<a href="../../../../../org/apache/spark/sql/types/StructType.html" title="class in org.apache.spark.sql.types">StructType</a> schema)</code>
<div class="block">:: DeveloperApi ::</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#uid()">uid</a></strong>()</code>
<div class="block">An immutable unique ID for the object and its derivatives.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html#validateParams()">validateParams</a></strong>()</code>
<div class="block">Validates parameter values stored internally.</div>
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<h3>Methods inherited from class org.apache.spark.ml.<a href="../../../../../org/apache/spark/ml/Estimator.html" title="class in org.apache.spark.ml">Estimator</a></h3>
<code><a href="../../../../../org/apache/spark/ml/Estimator.html#fit(org.apache.spark.sql.DataFrame, org.apache.spark.ml.param.ParamMap)">fit</a>, <a href="../../../../../org/apache/spark/ml/Estimator.html#fit(org.apache.spark.sql.DataFrame, org.apache.spark.ml.param.ParamMap[])">fit</a>, <a href="../../../../../org/apache/spark/ml/Estimator.html#fit(org.apache.spark.sql.DataFrame, org.apache.spark.ml.param.ParamPair, org.apache.spark.ml.param.ParamPair...)">fit</a>, <a href="../../../../../org/apache/spark/ml/Estimator.html#fit(org.apache.spark.sql.DataFrame, org.apache.spark.ml.param.ParamPair, scala.collection.Seq)">fit</a></code></li>
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<h3>Methods inherited from class org.apache.spark.ml.<a href="../../../../../org/apache/spark/ml/PipelineStage.html" title="class in org.apache.spark.ml">PipelineStage</a></h3>
<code><a href="../../../../../org/apache/spark/ml/PipelineStage.html#transformSchema(org.apache.spark.sql.types.StructType, boolean)">transformSchema</a></code></li>
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<h3>Methods inherited from class java.lang.Object</h3>
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<h3>Methods inherited from interface org.apache.spark.ml.param.<a href="../../../../../org/apache/spark/ml/param/Params.html" title="interface in org.apache.spark.ml.param">Params</a></h3>
<code><a href="../../../../../org/apache/spark/ml/param/Params.html#clear(org.apache.spark.ml.param.Param)">clear</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#copyValues(T, org.apache.spark.ml.param.ParamMap)">copyValues</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#defaultCopy(org.apache.spark.ml.param.ParamMap)">defaultCopy</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#defaultParamMap()">defaultParamMap</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#explainParam(org.apache.spark.ml.param.Param)">explainParam</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#explainParams()">explainParams</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#extractParamMap()">extractParamMap</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#extractParamMap(org.apache.spark.ml.param.ParamMap)">extractParamMap</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#get(org.apache.spark.ml.param.Param)">get</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#getDefault(org.apache.spark.ml.param.Param)">getDefault</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#getOrDefault(org.apache.spark.ml.param.Param)">getOrDefault</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#getParam(java.lang.String)">getParam</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#hasDefault(org.apache.spark.ml.param.Param)">hasDefault</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#hasParam(java.lang.String)">hasParam</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#isDefined(org.apache.spark.ml.param.Param)">isDefined</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#isSet(org.apache.spark.ml.param.Param)">isSet</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#paramMap()">paramMap</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#params()">params</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#set(org.apache.spark.ml.param.Param, T)">set</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#set(org.apache.spark.ml.param.ParamPair)">set</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#set(java.lang.String, java.lang.Object)">set</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#setDefault(org.apache.spark.ml.param.Param, T)">setDefault</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#setDefault(scala.collection.Seq)">setDefault</a>, <a href="../../../../../org/apache/spark/ml/param/Params.html#shouldOwn(org.apache.spark.ml.param.Param)">shouldOwn</a></code></li>
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<h3>Methods inherited from interface org.apache.spark.ml.util.<a href="../../../../../org/apache/spark/ml/util/Identifiable.html" title="interface in org.apache.spark.ml.util">Identifiable</a></h3>
<code><a href="../../../../../org/apache/spark/ml/util/Identifiable.html#toString()">toString</a></code></li>
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<h3>Methods inherited from interface org.apache.spark.<a href="../../../../../org/apache/spark/Logging.html" title="interface in org.apache.spark">Logging</a></h3>
<code><a href="../../../../../org/apache/spark/Logging.html#initializeIfNecessary()">initializeIfNecessary</a>, <a href="../../../../../org/apache/spark/Logging.html#initializeLogging()">initializeLogging</a>, <a href="../../../../../org/apache/spark/Logging.html#isTraceEnabled()">isTraceEnabled</a>, <a href="../../../../../org/apache/spark/Logging.html#log_()">log_</a>, <a href="../../../../../org/apache/spark/Logging.html#log()">log</a>, <a href="../../../../../org/apache/spark/Logging.html#logDebug(scala.Function0)">logDebug</a>, <a href="../../../../../org/apache/spark/Logging.html#logDebug(scala.Function0, java.lang.Throwable)">logDebug</a>, <a href="../../../../../org/apache/spark/Logging.html#logError(scala.Function0)">logError</a>, <a href="../../../../../org/apache/spark/Logging.html#logError(scala.Function0, java.lang.Throwable)">logError</a>, <a href="../../../../../org/apache/spark/Logging.html#logInfo(scala.Function0)">logInfo</a>, <a href="../../../../../org/apache/spark/Logging.html#logInfo(scala.Function0, java.lang.Throwable)">logInfo</a>, <a href="../../../../../org/apache/spark/Logging.html#logName()">logName</a>, <a href="../../../../../org/apache/spark/Logging.html#logTrace(scala.Function0)">logTrace</a>, <a href="../../../../../org/apache/spark/Logging.html#logTrace(scala.Function0, java.lang.Throwable)">logTrace</a>, <a href="../../../../../org/apache/spark/Logging.html#logWarning(scala.Function0)">logWarning</a>, <a href="../../../../../org/apache/spark/Logging.html#logWarning(scala.Function0, java.lang.Throwable)">logWarning</a></code></li>
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<h3>Constructor Detail</h3>
<a name="CrossValidator(java.lang.String)">
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<h4>CrossValidator</h4>
<pre>public CrossValidator(java.lang.String uid)</pre>
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<a name="CrossValidator()">
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<h4>CrossValidator</h4>
<pre>public CrossValidator()</pre>
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<a name="uid()">
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<h4>uid</h4>
<pre>public java.lang.String uid()</pre>
<div class="block"><strong>Description copied from interface: <code><a href="../../../../../org/apache/spark/ml/util/Identifiable.html#uid()">Identifiable</a></code></strong></div>
<div class="block">An immutable unique ID for the object and its derivatives.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/ml/util/Identifiable.html#uid()">uid</a></code> in interface <code><a href="../../../../../org/apache/spark/ml/util/Identifiable.html" title="interface in org.apache.spark.ml.util">Identifiable</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<a name="setEstimator(org.apache.spark.ml.Estimator)">
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<pre>public <a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html" title="class in org.apache.spark.ml.tuning">CrossValidator</a> setEstimator(<a href="../../../../../org/apache/spark/ml/Estimator.html" title="class in org.apache.spark.ml">Estimator</a><?> value)</pre>
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<pre>public <a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html" title="class in org.apache.spark.ml.tuning">CrossValidator</a> setEstimatorParamMaps(<a href="../../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a>[] value)</pre>
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<h4>setEvaluator</h4>
<pre>public <a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html" title="class in org.apache.spark.ml.tuning">CrossValidator</a> setEvaluator(<a href="../../../../../org/apache/spark/ml/evaluation/Evaluator.html" title="class in org.apache.spark.ml.evaluation">Evaluator</a> value)</pre>
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<h4>setNumFolds</h4>
<pre>public <a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html" title="class in org.apache.spark.ml.tuning">CrossValidator</a> setNumFolds(int value)</pre>
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<pre>public <a href="../../../../../org/apache/spark/ml/tuning/CrossValidatorModel.html" title="class in org.apache.spark.ml.tuning">CrossValidatorModel</a> fit(<a href="../../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> dataset)</pre>
<div class="block"><strong>Description copied from class: <code><a href="../../../../../org/apache/spark/ml/Estimator.html#fit(org.apache.spark.sql.DataFrame)">Estimator</a></code></strong></div>
<div class="block">Fits a model to the input data.</div>
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<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/ml/Estimator.html#fit(org.apache.spark.sql.DataFrame)">fit</a></code> in class <code><a href="../../../../../org/apache/spark/ml/Estimator.html" title="class in org.apache.spark.ml">Estimator</a><<a href="../../../../../org/apache/spark/ml/tuning/CrossValidatorModel.html" title="class in org.apache.spark.ml.tuning">CrossValidatorModel</a>></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>dataset</code> - (undocumented)</dd>
<dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<pre>public <a href="../../../../../org/apache/spark/sql/types/StructType.html" title="class in org.apache.spark.sql.types">StructType</a> transformSchema(<a href="../../../../../org/apache/spark/sql/types/StructType.html" title="class in org.apache.spark.sql.types">StructType</a> schema)</pre>
<div class="block"><strong>Description copied from class: <code><a href="../../../../../org/apache/spark/ml/PipelineStage.html#transformSchema(org.apache.spark.sql.types.StructType)">PipelineStage</a></code></strong></div>
<div class="block">:: DeveloperApi ::
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Derives the output schema from the input schema.</div>
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<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/ml/PipelineStage.html#transformSchema(org.apache.spark.sql.types.StructType)">transformSchema</a></code> in class <code><a href="../../../../../org/apache/spark/ml/PipelineStage.html" title="class in org.apache.spark.ml">PipelineStage</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>schema</code> - (undocumented)</dd>
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<pre>public void validateParams()</pre>
<div class="block"><strong>Description copied from interface: <code><a href="../../../../../org/apache/spark/ml/param/Params.html#validateParams()">Params</a></code></strong></div>
<div class="block">Validates parameter values stored internally.
Raise an exception if any parameter value is invalid.
<p>
This only needs to check for interactions between parameters.
Parameter value checks which do not depend on other parameters are handled by
<code>Param.validate()</code>. This method does not handle input/output column parameters;
those are checked during schema validation.</div>
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<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/ml/param/Params.html#validateParams()">validateParams</a></code> in interface <code><a href="../../../../../org/apache/spark/ml/param/Params.html" title="interface in org.apache.spark.ml.param">Params</a></code></dd>
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<pre>public <a href="../../../../../org/apache/spark/ml/tuning/CrossValidator.html" title="class in org.apache.spark.ml.tuning">CrossValidator</a> copy(<a href="../../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a> extra)</pre>
<div class="block"><strong>Description copied from interface: <code><a href="../../../../../org/apache/spark/ml/param/Params.html#copy(org.apache.spark.ml.param.ParamMap)">Params</a></code></strong></div>
<div class="block">Creates a copy of this instance with the same UID and some extra params.
Subclasses should implement this method and set the return type properly.
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<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/ml/param/Params.html#copy(org.apache.spark.ml.param.ParamMap)">copy</a></code> in interface <code><a href="../../../../../org/apache/spark/ml/param/Params.html" title="interface in org.apache.spark.ml.param">Params</a></code></dd>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/ml/Estimator.html#copy(org.apache.spark.ml.param.ParamMap)">copy</a></code> in class <code><a href="../../../../../org/apache/spark/ml/Estimator.html" title="class in org.apache.spark.ml">Estimator</a><<a href="../../../../../org/apache/spark/ml/tuning/CrossValidatorModel.html" title="class in org.apache.spark.ml.tuning">CrossValidatorModel</a>></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>extra</code> - (undocumented)</dd>
<dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd><dt><span class="strong">See Also:</span></dt><dd><code>defaultCopy()</code></dd></dl>
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<pre>public <a href="../../../../../org/apache/spark/ml/param/IntParam.html" title="class in org.apache.spark.ml.param">IntParam</a> numFolds()</pre>
<div class="block">Param for number of folds for cross validation. Must be >= 2.
Default: 3</div>
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<pre>public int getNumFolds()</pre>
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<pre>public <a href="../../../../../org/apache/spark/ml/param/Param.html" title="class in org.apache.spark.ml.param">Param</a><<a href="../../../../../org/apache/spark/ml/Estimator.html" title="class in org.apache.spark.ml">Estimator</a><?>> estimator()</pre>
<div class="block">param for the estimator to be validated</div>
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<pre>public <a href="../../../../../org/apache/spark/ml/Estimator.html" title="class in org.apache.spark.ml">Estimator</a><?> getEstimator()</pre>
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<pre>public <a href="../../../../../org/apache/spark/ml/param/Param.html" title="class in org.apache.spark.ml.param">Param</a><<a href="../../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a>[]> estimatorParamMaps()</pre>
<div class="block">param for estimator param maps</div>
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<pre>public <a href="../../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a>[] getEstimatorParamMaps()</pre>
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<pre>public <a href="../../../../../org/apache/spark/ml/param/Param.html" title="class in org.apache.spark.ml.param">Param</a><<a href="../../../../../org/apache/spark/ml/evaluation/Evaluator.html" title="class in org.apache.spark.ml.evaluation">Evaluator</a>> evaluator()</pre>
<div class="block">param for the evaluator used to select hyper-parameters that maximize the validated metric</div>
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<pre>public <a href="../../../../../org/apache/spark/ml/evaluation/Evaluator.html" title="class in org.apache.spark.ml.evaluation">Evaluator</a> getEvaluator()</pre>
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