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<h2 title="Class IDFModel" class="title">Class IDFModel</h2>
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<pre>public class <span class="strong">IDFModel</span>
extends java.lang.Object
implements scala.Serializable</pre>
<div class="block">:: Experimental ::
Represents an IDF model that can transform term frequency vectors.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../serialized-form.html#org.apache.spark.mllib.feature.IDFModel">Serialized Form</a></dd></dl>
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<td class="colFirst"><code><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/mllib/feature/IDFModel.html#idf()">idf</a></strong>()</code> </td>
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<td class="colFirst"><code><a href="../../../../../org/apache/spark/api/java/JavaRDD.html" title="class in org.apache.spark.api.java">JavaRDD</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/mllib/feature/IDFModel.html#transform(org.apache.spark.api.java.JavaRDD)">transform</a></strong>(<a href="../../../../../org/apache/spark/api/java/JavaRDD.html" title="class in org.apache.spark.api.java">JavaRDD</a><<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>> dataset)</code>
<div class="block">Transforms term frequency (TF) vectors to TF-IDF vectors (Java version).</div>
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<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/mllib/feature/IDFModel.html#transform(org.apache.spark.rdd.RDD)">transform</a></strong>(<a href="../../../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>> dataset)</code>
<div class="block">Transforms term frequency (TF) vectors to TF-IDF vectors.</div>
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<tr class="rowColor">
<td class="colFirst"><code><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/mllib/feature/IDFModel.html#transform(org.apache.spark.mllib.linalg.Vector)">transform</a></strong>(<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a> v)</code>
<div class="block">Transforms a term frequency (TF) vector to a TF-IDF vector</div>
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<h4>idf</h4>
<pre>public <a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a> idf()</pre>
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<h4>transform</h4>
<pre>public <a href="../../../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>> transform(<a href="../../../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>> dataset)</pre>
<div class="block">Transforms term frequency (TF) vectors to TF-IDF vectors.
<p>
If <code>minDocFreq</code> was set for the IDF calculation,
the terms which occur in fewer than <code>minDocFreq</code>
documents will have an entry of 0.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>dataset</code> - an RDD of term frequency vectors</dd>
<dt><span class="strong">Returns:</span></dt><dd>an RDD of TF-IDF vectors</dd></dl>
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<pre>public <a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a> transform(<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a> v)</pre>
<div class="block">Transforms a term frequency (TF) vector to a TF-IDF vector
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>v</code> - a term frequency vector</dd>
<dt><span class="strong">Returns:</span></dt><dd>a TF-IDF vector</dd></dl>
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<pre>public <a href="../../../../../org/apache/spark/api/java/JavaRDD.html" title="class in org.apache.spark.api.java">JavaRDD</a><<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>> transform(<a href="../../../../../org/apache/spark/api/java/JavaRDD.html" title="class in org.apache.spark.api.java">JavaRDD</a><<a href="../../../../../org/apache/spark/mllib/linalg/Vector.html" title="interface in org.apache.spark.mllib.linalg">Vector</a>> dataset)</pre>
<div class="block">Transforms term frequency (TF) vectors to TF-IDF vectors (Java version).</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>dataset</code> - a JavaRDD of term frequency vectors</dd>
<dt><span class="strong">Returns:</span></dt><dd>a JavaRDD of TF-IDF vectors</dd></dl>
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