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<div class="subTitle">org.apache.spark.ml.feature</div>
<h2 title="Class DCT" class="title">Class DCT</h2>
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<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>
<li>
<ul class="inheritance">
<li><a href="../../../../../org/apache/spark/ml/Transformer.html" title="class in org.apache.spark.ml">org.apache.spark.ml.Transformer</a></li>
<li>
<ul class="inheritance">
<li><a href="../../../../../org/apache/spark/ml/UnaryTransformer.html" title="class in org.apache.spark.ml">org.apache.spark.ml.UnaryTransformer</a><<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>,<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>,<a href="../../../../../org/apache/spark/ml/feature/DCT.html" title="class in org.apache.spark.ml.feature">DCT</a>></li>
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<li>org.apache.spark.ml.feature.DCT</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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<hr>
<br>
<pre>public class <span class="strong">DCT</span>
extends <a href="../../../../../org/apache/spark/ml/UnaryTransformer.html" title="class in org.apache.spark.ml">UnaryTransformer</a><<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>,<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>,<a href="../../../../../org/apache/spark/ml/feature/DCT.html" title="class in org.apache.spark.ml.feature">DCT</a>></pre>
<div class="block">:: Experimental ::
A feature transformer that takes the 1D discrete cosine transform of a real vector. No zero
padding is performed on the input vector.
It returns a real vector of the same length representing the DCT. The return vector is scaled
such that the transform matrix is unitary (aka scaled DCT-II).
<p>
More information on <code>Wikipedia</code>.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../serialized-form.html#org.apache.spark.ml.feature.DCT">Serialized Form</a></dd></dl>
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<tr>
<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../org/apache/spark/ml/feature/DCT.html#DCT()">DCT</a></strong>()</code> </td>
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<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../../../org/apache/spark/ml/feature/DCT.html#DCT(java.lang.String)">DCT</a></strong>(java.lang.String uid)</code> </td>
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<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>
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<tr class="altColor">
<td class="colFirst"><code>protected scala.Function1<<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>,<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/feature/DCT.html#createTransformFunc()">createTransformFunc</a></strong>()</code>
<div class="block">Creates the transform function using the given param map.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/feature/DCT.html#getInverse()">getInverse</a></strong>()</code> </td>
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<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/param/BooleanParam.html" title="class in org.apache.spark.ml.param">BooleanParam</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/feature/DCT.html#inverse()">inverse</a></strong>()</code>
<div class="block">Indicates whether to perform the inverse DCT (true) or forward DCT (false).</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/spark/sql/types/DataType.html" title="class in org.apache.spark.sql.types">DataType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/feature/DCT.html#outputDataType()">outputDataType</a></strong>()</code>
<div class="block">Returns the data type of the output column.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/feature/DCT.html" title="class in org.apache.spark.ml.feature">DCT</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/feature/DCT.html#setInverse(boolean)">setInverse</a></strong>(boolean value)</code> </td>
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<tr class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/feature/DCT.html#uid()">uid</a></strong>()</code>
<div class="block">An immutable unique ID for the object and its derivatives.</div>
</td>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/ml/feature/DCT.html#validateInputType(org.apache.spark.sql.types.DataType)">validateInputType</a></strong>(<a href="../../../../../org/apache/spark/sql/types/DataType.html" title="class in org.apache.spark.sql.types">DataType</a> inputType)</code>
<div class="block">Validates the input type.</div>
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<code><a href="../../../../../org/apache/spark/ml/UnaryTransformer.html#copy(org.apache.spark.ml.param.ParamMap)">copy</a>, <a href="../../../../../org/apache/spark/ml/UnaryTransformer.html#setInputCol(java.lang.String)">setInputCol</a>, <a href="../../../../../org/apache/spark/ml/UnaryTransformer.html#setOutputCol(java.lang.String)">setOutputCol</a>, <a href="../../../../../org/apache/spark/ml/UnaryTransformer.html#transform(org.apache.spark.sql.DataFrame)">transform</a>, <a href="../../../../../org/apache/spark/ml/UnaryTransformer.html#transformSchema(org.apache.spark.sql.types.StructType)">transformSchema</a></code></li>
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<code><a href="../../../../../org/apache/spark/ml/Transformer.html#transform(org.apache.spark.sql.DataFrame, org.apache.spark.ml.param.ParamMap)">transform</a>, <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>, <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></code></li>
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<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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<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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<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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<h4>DCT</h4>
<pre>public DCT(java.lang.String uid)</pre>
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<pre>public DCT()</pre>
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<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><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<pre>public <a href="../../../../../org/apache/spark/ml/param/BooleanParam.html" title="class in org.apache.spark.ml.param">BooleanParam</a> inverse()</pre>
<div class="block">Indicates whether to perform the inverse DCT (true) or forward DCT (false).
Default: false</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<pre>public <a href="../../../../../org/apache/spark/ml/feature/DCT.html" title="class in org.apache.spark.ml.feature">DCT</a> setInverse(boolean value)</pre>
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<pre>public boolean getInverse()</pre>
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<h4>createTransformFunc</h4>
<pre>protected scala.Function1<<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>,<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>> createTransformFunc()</pre>
<div class="block"><strong>Description copied from class: <code><a href="../../../../../org/apache/spark/ml/UnaryTransformer.html#createTransformFunc()">UnaryTransformer</a></code></strong></div>
<div class="block">Creates the transform function using the given param map. The input param map already takes
account of the embedded param map. So the param values should be determined solely by the input
param map.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/ml/UnaryTransformer.html#createTransformFunc()">createTransformFunc</a></code> in class <code><a href="../../../../../org/apache/spark/ml/UnaryTransformer.html" title="class in org.apache.spark.ml">UnaryTransformer</a><<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>,<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>,<a href="../../../../../org/apache/spark/ml/feature/DCT.html" title="class in org.apache.spark.ml.feature">DCT</a>></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<pre>protected void validateInputType(<a href="../../../../../org/apache/spark/sql/types/DataType.html" title="class in org.apache.spark.sql.types">DataType</a> inputType)</pre>
<div class="block"><strong>Description copied from class: <code><a href="../../../../../org/apache/spark/ml/UnaryTransformer.html#validateInputType(org.apache.spark.sql.types.DataType)">UnaryTransformer</a></code></strong></div>
<div class="block">Validates the input type. Throw an exception if it is invalid.</div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/ml/UnaryTransformer.html#validateInputType(org.apache.spark.sql.types.DataType)">validateInputType</a></code> in class <code><a href="../../../../../org/apache/spark/ml/UnaryTransformer.html" title="class in org.apache.spark.ml">UnaryTransformer</a><<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>,<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>,<a href="../../../../../org/apache/spark/ml/feature/DCT.html" title="class in org.apache.spark.ml.feature">DCT</a>></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>inputType</code> - (undocumented)</dd></dl>
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<pre>protected <a href="../../../../../org/apache/spark/sql/types/DataType.html" title="class in org.apache.spark.sql.types">DataType</a> outputDataType()</pre>
<div class="block"><strong>Description copied from class: <code><a href="../../../../../org/apache/spark/ml/UnaryTransformer.html#outputDataType()">UnaryTransformer</a></code></strong></div>
<div class="block">Returns the data type of the output column.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
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