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<div class="subTitle">org.apache.spark.ml</div>
<h2 title="Class Transformer" class="title">Class Transformer</h2>
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<li>java.lang.Object</li>
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<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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<li>org.apache.spark.ml.Transformer</li>
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<dd><a href="../../../../org/apache/spark/ml/feature/Binarizer.html" title="class in org.apache.spark.ml.feature">Binarizer</a>, <a href="../../../../org/apache/spark/ml/feature/ColumnPruner.html" title="class in org.apache.spark.ml.feature">ColumnPruner</a>, <a href="../../../../org/apache/spark/ml/feature/HashingTF.html" title="class in org.apache.spark.ml.feature">HashingTF</a>, <a href="../../../../org/apache/spark/ml/feature/IndexToString.html" title="class in org.apache.spark.ml.feature">IndexToString</a>, <a href="../../../../org/apache/spark/ml/Model.html" title="class in org.apache.spark.ml">Model</a>, <a href="../../../../org/apache/spark/ml/feature/OneHotEncoder.html" title="class in org.apache.spark.ml.feature">OneHotEncoder</a>, <a href="../../../../org/apache/spark/ml/feature/StopWordsRemover.html" title="class in org.apache.spark.ml.feature">StopWordsRemover</a>, <a href="../../../../org/apache/spark/ml/UnaryTransformer.html" title="class in org.apache.spark.ml">UnaryTransformer</a>, <a href="../../../../org/apache/spark/ml/feature/VectorAssembler.html" title="class in org.apache.spark.ml.feature">VectorAssembler</a>, <a href="../../../../org/apache/spark/ml/feature/VectorSlicer.html" title="class in org.apache.spark.ml.feature">VectorSlicer</a></dd>
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<pre>public abstract class <span class="strong">Transformer</span>
extends <a href="../../../../org/apache/spark/ml/PipelineStage.html" title="class in org.apache.spark.ml">PipelineStage</a></pre>
<div class="block">:: DeveloperApi ::
Abstract class for transformers that transform one dataset into another.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../serialized-form.html#org.apache.spark.ml.Transformer">Serialized Form</a></dd></dl>
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<td class="colOne"><code><strong><a href="../../../../org/apache/spark/ml/Transformer.html#Transformer()">Transformer</a></strong>()</code> </td>
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<td class="colFirst"><code>abstract <a href="../../../../org/apache/spark/ml/Transformer.html" title="class in org.apache.spark.ml">Transformer</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/spark/ml/Transformer.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>
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<td class="colFirst"><code>abstract <a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/spark/ml/Transformer.html#transform(org.apache.spark.sql.DataFrame)">transform</a></strong>(<a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> dataset)</code>
<div class="block">Transforms the input dataset.</div>
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<tr class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/spark/ml/Transformer.html#transform(org.apache.spark.sql.DataFrame, org.apache.spark.ml.param.ParamMap)">transform</a></strong>(<a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> dataset,
<a href="../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a> paramMap)</code>
<div class="block">Transforms the dataset with provided parameter map as additional parameters.</div>
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<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/spark/ml/Transformer.html#transform(org.apache.spark.sql.DataFrame, org.apache.spark.ml.param.ParamPair, org.apache.spark.ml.param.ParamPair...)">transform</a></strong>(<a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> dataset,
<a href="../../../../org/apache/spark/ml/param/ParamPair.html" title="class in org.apache.spark.ml.param">ParamPair</a><?> firstParamPair,
<a href="../../../../org/apache/spark/ml/param/ParamPair.html" title="class in org.apache.spark.ml.param">ParamPair</a><?>... otherParamPairs)</code>
<div class="block">Transforms the dataset with optional parameters</div>
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<tr class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/spark/ml/Transformer.html#transform(org.apache.spark.sql.DataFrame, org.apache.spark.ml.param.ParamPair, scala.collection.Seq)">transform</a></strong>(<a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> dataset,
<a href="../../../../org/apache/spark/ml/param/ParamPair.html" title="class in org.apache.spark.ml.param">ParamPair</a><?> firstParamPair,
scala.collection.Seq<<a href="../../../../org/apache/spark/ml/param/ParamPair.html" title="class in org.apache.spark.ml.param">ParamPair</a><?>> otherParamPairs)</code>
<div class="block">Transforms the dataset with optional parameters</div>
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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)">transformSchema</a>, <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>, <a href="../../../../org/apache/spark/ml/param/Params.html#validateParams()">validateParams</a></code></li>
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<code><a href="../../../../org/apache/spark/ml/util/Identifiable.html#toString()">toString</a>, <a href="../../../../org/apache/spark/ml/util/Identifiable.html#uid()">uid</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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<pre>public Transformer()</pre>
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<h4>transform</h4>
<pre>public <a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> transform(<a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> dataset,
<a href="../../../../org/apache/spark/ml/param/ParamPair.html" title="class in org.apache.spark.ml.param">ParamPair</a><?> firstParamPair,
<a href="../../../../org/apache/spark/ml/param/ParamPair.html" title="class in org.apache.spark.ml.param">ParamPair</a><?>... otherParamPairs)</pre>
<div class="block">Transforms the dataset with optional parameters</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>dataset</code> - input dataset</dd><dd><code>firstParamPair</code> - the first param pair, overwrite embedded params</dd><dd><code>otherParamPairs</code> - other param pairs, overwrite embedded params</dd>
<dt><span class="strong">Returns:</span></dt><dd>transformed dataset</dd></dl>
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<h4>transform</h4>
<pre>public <a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> transform(<a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> dataset,
<a href="../../../../org/apache/spark/ml/param/ParamPair.html" title="class in org.apache.spark.ml.param">ParamPair</a><?> firstParamPair,
scala.collection.Seq<<a href="../../../../org/apache/spark/ml/param/ParamPair.html" title="class in org.apache.spark.ml.param">ParamPair</a><?>> otherParamPairs)</pre>
<div class="block">Transforms the dataset with optional parameters</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>dataset</code> - input dataset</dd><dd><code>firstParamPair</code> - the first param pair, overwrite embedded params</dd><dd><code>otherParamPairs</code> - other param pairs, overwrite embedded params</dd>
<dt><span class="strong">Returns:</span></dt><dd>transformed dataset</dd></dl>
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<a name="transform(org.apache.spark.sql.DataFrame, org.apache.spark.ml.param.ParamMap)">
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<h4>transform</h4>
<pre>public <a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> transform(<a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> dataset,
<a href="../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a> paramMap)</pre>
<div class="block">Transforms the dataset with provided parameter map as additional parameters.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>dataset</code> - input dataset</dd><dd><code>paramMap</code> - additional parameters, overwrite embedded params</dd>
<dt><span class="strong">Returns:</span></dt><dd>transformed dataset</dd></dl>
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<h4>transform</h4>
<pre>public abstract <a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> transform(<a href="../../../../org/apache/spark/sql/DataFrame.html" title="class in org.apache.spark.sql">DataFrame</a> dataset)</pre>
<div class="block">Transforms the input dataset.</div>
<dl><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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<a name="copy(org.apache.spark.ml.param.ParamMap)">
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<h4>copy</h4>
<pre>public abstract <a href="../../../../org/apache/spark/ml/Transformer.html" title="class in org.apache.spark.ml">Transformer</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.
<p></div>
<dl>
<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/PipelineStage.html#copy(org.apache.spark.ml.param.ParamMap)">copy</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>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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