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<div class="subTitle">org.apache.commons.math3.distribution</div>
<h2 title="Class MixtureMultivariateRealDistribution" class="title">Class MixtureMultivariateRealDistribution<T extends <a href="../../../../../org/apache/commons/math3/distribution/MultivariateRealDistribution.html" title="interface in org.apache.commons.math3.distribution">MultivariateRealDistribution</a>></h2>
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<li><a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html" title="class in org.apache.commons.math3.distribution">org.apache.commons.math3.distribution.AbstractMultivariateRealDistribution</a></li>
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<li>org.apache.commons.math3.distribution.MixtureMultivariateRealDistribution<T></li>
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<dl><dt><span class="strong">Type Parameters:</span></dt><dd><code>T</code> - Type of the mixture components.</dd></dl>
<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../org/apache/commons/math3/distribution/MultivariateRealDistribution.html" title="interface in org.apache.commons.math3.distribution">MultivariateRealDistribution</a></dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateNormalDistribution.html" title="class in org.apache.commons.math3.distribution">MixtureMultivariateNormalDistribution</a></dd>
</dl>
<hr>
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<pre>public class <span class="strong">MixtureMultivariateRealDistribution<T extends <a href="../../../../../org/apache/commons/math3/distribution/MultivariateRealDistribution.html" title="interface in org.apache.commons.math3.distribution">MultivariateRealDistribution</a>></span>
extends <a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html" title="class in org.apache.commons.math3.distribution">AbstractMultivariateRealDistribution</a></pre>
<div class="block">Class for representing <a href="http://en.wikipedia.org/wiki/Mixture_model">
mixture model</a> distributions.</div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>3.1</dd></dl>
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<h3>Fields inherited from class org.apache.commons.math3.distribution.<a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html" title="class in org.apache.commons.math3.distribution">AbstractMultivariateRealDistribution</a></h3>
<code><a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html#random">random</a></code></li>
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<caption><span>Constructors</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html#MixtureMultivariateRealDistribution(java.util.List)">MixtureMultivariateRealDistribution</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/commons/math3/util/Pair.html" title="class in org.apache.commons.math3.util">Pair</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Double.html?is-external=true" title="class or interface in java.lang">Double</a>,<a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html" title="type parameter in MixtureMultivariateRealDistribution">T</a>>> components)</code>
<div class="block">Creates a mixture model from a list of distributions and their
associated weights.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html#MixtureMultivariateRealDistribution(org.apache.commons.math3.random.RandomGenerator,%20java.util.List)">MixtureMultivariateRealDistribution</a></strong>(<a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a> rng,
<a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/commons/math3/util/Pair.html" title="class in org.apache.commons.math3.util">Pair</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Double.html?is-external=true" title="class or interface in java.lang">Double</a>,<a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html" title="type parameter in MixtureMultivariateRealDistribution">T</a>>> components)</code>
<div class="block">Creates a mixture model from a list of distributions and their
associated weights.</div>
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<caption><span>Methods</span><span class="tabEnd"> </span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html#density(double[])">density</a></strong>(double[] values)</code>
<div class="block">Returns the probability density function (PDF) of this distribution
evaluated at the specified point <code>x</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/commons/math3/util/Pair.html" title="class in org.apache.commons.math3.util">Pair</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Double.html?is-external=true" title="class or interface in java.lang">Double</a>,<a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html" title="type parameter in MixtureMultivariateRealDistribution">T</a>>></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html#getComponents()">getComponents</a></strong>()</code>
<div class="block">Gets the distributions that make up the mixture model.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html#reseedRandomGenerator(long)">reseedRandomGenerator</a></strong>(long seed)</code>
<div class="block">Reseeds the random generator used to generate samples.</div>
</td>
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<td class="colFirst"><code>double[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html#sample()">sample</a></strong>()</code>
<div class="block">Generates a random value vector sampled from this distribution.</div>
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<h3>Methods inherited from class org.apache.commons.math3.distribution.<a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html" title="class in org.apache.commons.math3.distribution">AbstractMultivariateRealDistribution</a></h3>
<code><a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html#getDimension()">getDimension</a>, <a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html#sample(int)">sample</a></code></li>
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<h4>MixtureMultivariateRealDistribution</h4>
<pre>public MixtureMultivariateRealDistribution(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/commons/math3/util/Pair.html" title="class in org.apache.commons.math3.util">Pair</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Double.html?is-external=true" title="class or interface in java.lang">Double</a>,<a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html" title="type parameter in MixtureMultivariateRealDistribution">T</a>>> components)</pre>
<div class="block">Creates a mixture model from a list of distributions and their
associated weights.
<p>
<b>Note:</b> this constructor will implicitly create an instance of
<a href="../../../../../org/apache/commons/math3/random/Well19937c.html" title="class in org.apache.commons.math3.random"><code>Well19937c</code></a> as random generator to be used for sampling only (see
<a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html#sample()"><code>sample()</code></a> and <a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html#sample(int)"><code>AbstractMultivariateRealDistribution.sample(int)</code></a>). In case no sampling is
needed for the created distribution, it is advised to pass <code>null</code>
as random generator via the appropriate constructors to avoid the
additional initialisation overhead.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>components</code> - List of (weight, distribution) pairs from which to sample.</dd></dl>
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<pre>public MixtureMultivariateRealDistribution(<a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a> rng,
<a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/commons/math3/util/Pair.html" title="class in org.apache.commons.math3.util">Pair</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Double.html?is-external=true" title="class or interface in java.lang">Double</a>,<a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html" title="type parameter in MixtureMultivariateRealDistribution">T</a>>> components)</pre>
<div class="block">Creates a mixture model from a list of distributions and their
associated weights.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>rng</code> - Random number generator.</dd><dd><code>components</code> - Distributions from which to sample.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/NotPositiveException.html" title="class in org.apache.commons.math3.exception">NotPositiveException</a></code> - if any of the weights is negative.</dd>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/DimensionMismatchException.html" title="class in org.apache.commons.math3.exception">DimensionMismatchException</a></code> - if not all components have the same
number of variables.</dd></dl>
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<h4>density</h4>
<pre>public double density(double[] values)</pre>
<div class="block">Returns the probability density function (PDF) of this distribution
evaluated at the specified point <code>x</code>. In general, the PDF is the
derivative of the cumulative distribution function. If the derivative
does not exist at <code>x</code>, then an appropriate replacement should be
returned, e.g. <code>Double.POSITIVE_INFINITY</code>, <code>Double.NaN</code>, or
the limit inferior or limit superior of the difference quotient.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - Point at which the PDF is evaluated.</dd>
<dt><span class="strong">Returns:</span></dt><dd>the value of the probability density function at point <code>x</code>.</dd></dl>
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<h4>sample</h4>
<pre>public double[] sample()</pre>
<div class="block">Generates a random value vector sampled from this distribution.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/commons/math3/distribution/MultivariateRealDistribution.html#sample()">sample</a></code> in interface <code><a href="../../../../../org/apache/commons/math3/distribution/MultivariateRealDistribution.html" title="interface in org.apache.commons.math3.distribution">MultivariateRealDistribution</a></code></dd>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html#sample()">sample</a></code> in class <code><a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html" title="class in org.apache.commons.math3.distribution">AbstractMultivariateRealDistribution</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>a random value vector.</dd></dl>
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<pre>public void reseedRandomGenerator(long seed)</pre>
<div class="block">Reseeds the random generator used to generate samples.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/commons/math3/distribution/MultivariateRealDistribution.html#reseedRandomGenerator(long)">reseedRandomGenerator</a></code> in interface <code><a href="../../../../../org/apache/commons/math3/distribution/MultivariateRealDistribution.html" title="interface in org.apache.commons.math3.distribution">MultivariateRealDistribution</a></code></dd>
<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html#reseedRandomGenerator(long)">reseedRandomGenerator</a></code> in class <code><a href="../../../../../org/apache/commons/math3/distribution/AbstractMultivariateRealDistribution.html" title="class in org.apache.commons.math3.distribution">AbstractMultivariateRealDistribution</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>seed</code> - Seed with which to initialize the random number generator.</dd></dl>
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<h4>getComponents</h4>
<pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/commons/math3/util/Pair.html" title="class in org.apache.commons.math3.util">Pair</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Double.html?is-external=true" title="class or interface in java.lang">Double</a>,<a href="../../../../../org/apache/commons/math3/distribution/MixtureMultivariateRealDistribution.html" title="type parameter in MixtureMultivariateRealDistribution">T</a>>> getComponents()</pre>
<div class="block">Gets the distributions that make up the mixture model.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the component distributions and associated weights.</dd></dl>
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