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<a href="pyspark-module.html">Package pyspark</a> ::
<a href="pyspark.mllib-module.html">Package mllib</a> ::
<a href="pyspark.mllib.classification-module.html">Module classification</a> ::
Class NaiveBayes
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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class NaiveBayes</h1><p class="nomargin-top"><span class="codelink"><a href="pyspark.mllib.classification-pysrc.html#NaiveBayes">source code</a></span></p>
<pre class="base-tree">
object --+
|
<strong class="uidshort">NaiveBayes</strong>
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<td><span class="summary-sig"><a href="pyspark.mllib.classification.NaiveBayes-class.html#train" class="summary-sig-name">train</a>(<span class="summary-sig-arg">cls</span>,
<span class="summary-sig-arg">data</span>,
<span class="summary-sig-arg">lambda_</span>=<span class="summary-sig-default">1.0</span>)</span><br />
Train a Naive Bayes model given an RDD of (label, features) vectors.</td>
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<span class="codelink"><a href="pyspark.mllib.classification-pysrc.html#NaiveBayes.train">source code</a></span>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">train</span>(<span class="sig-arg">cls</span>,
<span class="sig-arg">data</span>,
<span class="sig-arg">lambda_</span>=<span class="sig-default">1.0</span>)</span>
<br /><em class="fname">Class Method</em>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyspark.mllib.classification-pysrc.html#NaiveBayes.train">source code</a></span>
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<p>Train a Naive Bayes model given an RDD of (label, features)
vectors.</p>
<p>This is the Multinomial NB (<a href="http://tinyurl.com/lsdw6p"
target="_top">http://tinyurl.com/lsdw6p</a>) which can handle all kinds
of discrete data. For example, by converting documents into TF-IDF
vectors, it can be used for document classification. By making every
vector a 0-1 vector, it can also be used as Bernoulli NB (<a
href="http://tinyurl.com/p7c96j6"
target="_top">http://tinyurl.com/p7c96j6</a>).</p>
<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><strong class="pname"><code>data</code></strong> - RDD of NumPy vectors, one per element, where the first coordinate
is the label and the rest is the feature vector (e.g. a count
vector).</li>
<li><strong class="pname"><code>lambda_</code></strong> - The smoothing parameter</li>
</ul></dd>
</dl>
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