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/external/commons-math3-3.6.1/docs/apidocs/org/apache/commons/math3/optim/nonlinear/scalar/noderiv/CMAESOptimizer.Sigma.html

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  90. <li>org.apache.commons.math3.optim.nonlinear.scalar.noderiv.CMAESOptimizer.Sigma</li>
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  103. <dd><a href="../../../../../../../../org/apache/commons/math3/optim/nonlinear/scalar/noderiv/CMAESOptimizer.html" title="class in org.apache.commons.math3.optim.nonlinear.scalar.noderiv">CMAESOptimizer</a></dd>
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  107. <pre>public static class <span class="strong">CMAESOptimizer.Sigma</span>
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  108. extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
    109. 

  109. implements <a href="../../../../../../../../org/apache/commons/math3/optim/OptimizationData.html" title="interface in org.apache.commons.math3.optim">OptimizationData</a></pre>
    110. 

  110. <div class="block">Input sigma values.
    111. 

  111.  They define the initial coordinate-wise standard deviations for
    112. 

  112.  sampling new search points around the initial guess.
    113. 

  113.  It is suggested to set them to the estimated distance from the
    114. 

  114.  initial to the desired optimum.
    115. 

  115.  Small values induce the search to be more local (and very small
    116. 

  116.  values are more likely to find a local optimum close to the initial
    117. 

  117.  guess).
    118. 

  118.  Too small values might however lead to early termination.</div>
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  137. <td class="colOne"><code><strong><a href="../../../../../../../../org/apache/commons/math3/optim/nonlinear/scalar/noderiv/CMAESOptimizer.Sigma.html#CMAESOptimizer.Sigma(double[])">CMAESOptimizer.Sigma</a></strong>(double[]&nbsp;s)</code>&nbsp;</td>
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  155. <td class="colFirst"><code>double[]</code></td>
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  156. <td class="colLast"><code><strong><a href="../../../../../../../../org/apache/commons/math3/optim/nonlinear/scalar/noderiv/CMAESOptimizer.Sigma.html#getSigma()">getSigma</a></strong>()</code>&nbsp;</td>
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    185. 

  185. <h4>CMAESOptimizer.Sigma</h4>
    186. 

  186. <pre>public&nbsp;CMAESOptimizer.Sigma(double[]&nbsp;s)
    187. 

  187.                      throws <a href="../../../../../../../../org/apache/commons/math3/exception/NotPositiveException.html" title="class in org.apache.commons.math3.exception">NotPositiveException</a></pre>
    188. 

  188. <dl><dt><span class="strong">Parameters:</span></dt><dd><code>s</code> - Sigma values.</dd>
    189. 

  189. <dt><span class="strong">Throws:</span></dt>
    190. 

  190. <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 array entries is smaller
    191. 

  191.  than zero.</dd></dl>
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  207. <h4>getSigma</h4>
    208. 

  208. <pre>public&nbsp;double[]&nbsp;getSigma()</pre>
    209. 

  209. <dl><dt><span class="strong">Returns:</span></dt><dd>the sigma values.</dd></dl>
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