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<div class="subTitle">org.eclipse.january.dataset</div>
<h2 title="Class Outliers" class="title">Class Outliers</h2>
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<pre>public class <a href="../../../../src-html/org/eclipse/january/dataset/Outliers.html#line.24">Outliers</a>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block">Estimators of the scale of a Dataset.
<p>
A class of static methods to produce estimations of the scale of variation within a Dataset.
The available estimators are:
<ul>
<li> Median Absolute Deviation </li>
<li> S<sub>n</sub> of Croux and Rousseeuw (1992).</li>
</ul>
<p>
Croux, C. and P. J. Rousseeuw, "Time-efficient algorithms for two highly robust estimators of scale", Computational Statistics, Volume 1, eds. Y. Dodge and J.Whittaker, Physica-Verlag, Heidelberg, pp411--428 (1992).</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Outliers.html#Outliers--">Outliers</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Outliers.html#highMed-org.eclipse.january.dataset.Dataset-">highMed</a></span>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;data)</code>
<div class="block">Returns the himed</div>
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<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Outliers.html#lowMed-org.eclipse.january.dataset.Dataset-">lowMed</a></span>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;data)</code>
<div class="block">Returns the lomed</div>
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<td class="colFirst"><code>static double[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Outliers.html#medianAbsoluteDeviation-org.eclipse.january.dataset.Dataset-">medianAbsoluteDeviation</a></span>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;data)</code>
<div class="block">Returns the Median Absolute Deviation (MAD) and the median.</div>
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<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Outliers.html#medianOFTwoPrimitiveArrays-double:A-double:A-">medianOFTwoPrimitiveArrays</a></span>(double[]&nbsp;a,
double[]&nbsp;b)</code>
<div class="block">Calculates the overall median of two double arrays</div>
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<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Outliers.html#snFast-org.eclipse.january.dataset.Dataset-">snFast</a></span>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;data)</code>
<div class="block">Returns the Sn estimator of Croux and Rousseeuw.</div>
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<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Outliers.html#snNaive-org.eclipse.january.dataset.Dataset-">snNaive</a></span>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;data)</code>
<div class="block">Returns the Sn estimator of Croux and Rousseeuw.</div>
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<pre>public&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Outliers.html#line.24">Outliers</a>()</pre>
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<h4>medianAbsoluteDeviation</h4>
<pre>public static&nbsp;double[]&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Outliers.html#line.35">medianAbsoluteDeviation</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;data)</pre>
<div class="block">Returns the Median Absolute Deviation (MAD) and the median.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - The data for which the median and the MAD are to be calculated</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A two-element array of doubles, consisting of the MAD and the median of the data</dd>
</dl>
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<h4>snNaive</h4>
<pre>public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Outliers.html#line.54">snNaive</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;data)</pre>
<div class="block">Returns the Sn estimator of Croux and Rousseeuw.
<p>
This is the simple O(n²) version of the calculation algorithm.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - The data for which the estimator is to be calculated.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The value of the Sn estimator for the data</dd>
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<h4>snFast</h4>
<pre>public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Outliers.html#line.86">snFast</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;data)</pre>
<div class="block">Returns the Sn estimator of Croux and Rousseeuw.
<p>
This is the complex O(nlog n) version of the calculation algorithm.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - The data for which the estimator is to be calculated.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The value of the Sn estimator for the data</dd>
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<h4>lowMed</h4>
<pre>public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Outliers.html#line.117">lowMed</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;data)</pre>
<div class="block">Returns the lomed
<p>
Returns the lomed (low median) of a sorted Dataset.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - A sorted Dataset for which the low median is to be calculated.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The value of the lomed of the data</dd>
</dl>
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<pre>public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Outliers.html#line.130">highMed</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;data)</pre>
<div class="block">Returns the himed
<p>
Returns the himed (high median) of a sorted Dataset.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - A sorted Dataset for which the low median is to be calculated.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The value of the himed of the data</dd>
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<pre>public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Outliers.html#line.141">medianOFTwoPrimitiveArrays</a>(double[]&nbsp;a,
double[]&nbsp;b)</pre>
<div class="block">Calculates the overall median of two double arrays</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>a</code> - </dd>
<dd><code>b</code> - the two arrays for which the overall median is desired.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the overall median of the two arrays</dd>
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