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+<div class="subTitle">org.apache.commons.math3.ml.neuralnet.sofm.util</div>
+<h2 title="Class ExponentialDecayFunction" class="title">Class ExponentialDecayFunction</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
+<li>
+<ul class="inheritance">
+<li>org.apache.commons.math3.ml.neuralnet.sofm.util.ExponentialDecayFunction</li>
+</ul>
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+<div class="description">
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+<br>
+<pre>public class <span class="strong">ExponentialDecayFunction</span>
+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></pre>
+<div class="block">Exponential decay function: <code>a e<sup>-x / b</sup></code>,
+ where <code>x</code> is the (integer) independent variable.
+ <br/>
+ Class is immutable.</div>
+<dl><dt><span class="strong">Since:</span></dt>
+ <dd>3.3</dd></dl>
+</li>
+</ul>
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+<caption><span>Constructors</span><span class="tabEnd">&nbsp;</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/ml/neuralnet/sofm/util/ExponentialDecayFunction.html#ExponentialDecayFunction(double,%20double,%20long)">ExponentialDecayFunction</a></strong>(double&nbsp;initValue,
+ double&nbsp;valueAtNumCall,
+ long&nbsp;numCall)</code>
+<div class="block">Creates an instance.</div>
+</td>
+</tr>
+</table>
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+<caption><span>Methods</span><span class="tabEnd">&nbsp;</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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+<tr class="altColor">
+<td class="colFirst"><code>double</code></td>
+<td class="colLast"><code><strong><a href="../../../../../../../../org/apache/commons/math3/ml/neuralnet/sofm/util/ExponentialDecayFunction.html#value(long)">value</a></strong>(long&nbsp;numCall)</code>
+<div class="block">Computes <code>a e<sup>-numCall / b</sup></code>.</div>
+</td>
+</tr>
+</table>
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+<li class="blockList">
+<h4>ExponentialDecayFunction</h4>
+<pre>public&nbsp;ExponentialDecayFunction(double&nbsp;initValue,
+ double&nbsp;valueAtNumCall,
+ long&nbsp;numCall)</pre>
+<div class="block">Creates an instance. It will be such that
+ <ul>
+ <li><code>a = initValue</code></li>
+ <li><code>b = -numCall / ln(valueAtNumCall / initValue)</code></li>
+ </ul></div>
+<dl><dt><span class="strong">Parameters:</span></dt><dd><code>initValue</code> - Initial value, i.e. <a href="../../../../../../../../org/apache/commons/math3/ml/neuralnet/sofm/util/ExponentialDecayFunction.html#value(long)"><code>value(0)</code></a>.</dd><dd><code>valueAtNumCall</code> - Value of the function at <code>numCall</code>.</dd><dd><code>numCall</code> - Argument for which the function returns
+ <code>valueAtNumCall</code>.</dd>
+<dt><span class="strong">Throws:</span></dt>
+<dd><code><a href="../../../../../../../../org/apache/commons/math3/exception/NotStrictlyPositiveException.html" title="class in org.apache.commons.math3.exception">NotStrictlyPositiveException</a></code> - if <code>initValue &lt;= 0</code>.</dd>
+<dd><code><a href="../../../../../../../../org/apache/commons/math3/exception/NotStrictlyPositiveException.html" title="class in org.apache.commons.math3.exception">NotStrictlyPositiveException</a></code> - if <code>valueAtNumCall &lt;= 0</code>.</dd>
+<dd><code><a href="../../../../../../../../org/apache/commons/math3/exception/NumberIsTooLargeException.html" title="class in org.apache.commons.math3.exception">NumberIsTooLargeException</a></code> - if <code>valueAtNumCall &gt;= initValue</code>.</dd>
+<dd><code><a href="../../../../../../../../org/apache/commons/math3/exception/NotStrictlyPositiveException.html" title="class in org.apache.commons.math3.exception">NotStrictlyPositiveException</a></code> - if <code>numCall &lt;= 0</code>.</dd></dl>
+</li>
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+<h4>value</h4>
+<pre>public&nbsp;double&nbsp;value(long&nbsp;numCall)</pre>
+<div class="block">Computes <code>a e<sup>-numCall / b</sup></code>.</div>
+<dl><dt><span class="strong">Parameters:</span></dt><dd><code>numCall</code> - Current step of the training task.</dd>
+<dt><span class="strong">Returns:</span></dt><dd>the value of the function at <code>numCall</code>.</dd></dl>
+</li>
+</ul>
+</li>
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