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-<ul class="inheritance"> -<li><a href="http://docs.oracle.com/javase/6/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.ode.nonstiff.GillIntegratorTest</li> -</ul> -</li> -</ul> -<div class="description"> -<ul class="blockList"> -<li class="blockList"> -<hr> -<br> -<pre>public class <a href="../../../../../../src-html/org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#line.40">GillIntegratorTest</a> -extends <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true"; title="class or interface in java.lang">Object</a></pre> -</li> -</ul> -</div> -<div class="summary"> -<ul class="blockList"> -<li class="blockList"> -<!-- ======== CONSTRUCTOR SUMMARY ======== --> -<ul class="blockList"> -<li class="blockList"><a name="constructor_summary"> -<!-- --> -</a> -<h3>Constructor Summary</h3> -<table class="overviewSummary" 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and Description</th> -</tr> -<tr class="altColor"> -<td class="colFirst"><code>void</code></td> -<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#testBackward()">testBackward</a></strong>()</code> </td> -</tr> -<tr class="rowColor"> -<td class="colFirst"><code>void</code></td> -<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#testBigStep()">testBigStep</a></strong>()</code> </td> -</tr> -<tr class="altColor"> -<td class="colFirst"><code>void</code></td> -<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#testDecreasingSteps()">testDecreasingSteps</a></strong>()</code> </td> -</tr> -<tr class="rowColor"> -<td class="colFirst"><code>void</code></td> -<td class="colLast"><code><strong><a 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class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#testUnstableDerivative()">testUnstableDerivative</a></strong>()</code> </td> -</tr> -</table> -<ul class="blockList"> -<li class="blockList"><a name="methods_inherited_from_class_java.lang.Object"> -<!-- --> -</a> -<h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true"; title="class or interface in java.lang">Object</a></h3> -<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in 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org.apache.commons.math3.exception">MaxCountExceededException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></code></dd></dl> -</li> -</ul> -<a name="testDecreasingSteps()"> -<!-- --> -</a> -<ul class="blockList"> -<li class="blockList"> -<h4>testDecreasingSteps</h4> -<pre>public void <a href="../../../../../../src-html/org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#line.54">testDecreasingSteps</a>() - throws <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></pre> -<dl><dt><span class="strong">Throws:</span></dt> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></code></dd></dl> -</li> -</ul> -<a name="testSmallStep()"> -<!-- --> -</a> -<ul class="blockList"> -<li class="blockList"> -<h4>testSmallStep</h4> -<pre>public void <a href="../../../../../../src-html/org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#line.101">testSmallStep</a>() - throws <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></pre> -<dl><dt><span class="strong">Throws:</span></dt> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></code></dd></dl> -</li> -</ul> -<a name="testBigStep()"> -<!-- --> -</a> -<ul class="blockList"> -<li class="blockList"> -<h4>testBigStep</h4> -<pre>public void <a href="../../../../../../src-html/org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#line.122">testBigStep</a>() - throws <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></pre> -<dl><dt><span class="strong">Throws:</span></dt> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></code></dd></dl> -</li> -</ul> -<a name="testBackward()"> -<!-- --> -</a> -<ul class="blockList"> -<li class="blockList"> -<h4>testBackward</h4> -<pre>public void <a href="../../../../../../src-html/org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#line.142">testBackward</a>() - throws <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></pre> -<dl><dt><span class="strong">Throws:</span></dt> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></code></dd></dl> -</li> -</ul> -<a name="testKepler()"> -<!-- --> -</a> -<ul class="blockList"> -<li class="blockList"> -<h4>testKepler</h4> -<pre>public void <a href="../../../../../../src-html/org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#line.162">testKepler</a>() - throws <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></pre> -<dl><dt><span class="strong">Throws:</span></dt> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></code></dd></dl> -</li> -</ul> -<a name="testUnstableDerivative()"> -<!-- --> -</a> -<ul class="blockList"> -<li class="blockList"> -<h4>testUnstableDerivative</h4> -<pre>public void <a href="../../../../../../src-html/org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#line.177">testUnstableDerivative</a>() - throws <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></pre> -<dl><dt><span class="strong">Throws:</span></dt> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></code></dd></dl> -</li> -</ul> -<a name="testStepSize()"> -<!-- --> -</a> -<ul class="blockListLast"> -<li class="blockList"> -<h4>testStepSize</h4> -<pre>public void <a href="../../../../../../src-html/org/apache/commons/math3/ode/nonstiff/GillIntegratorTest.html#line.218">testStepSize</a>() - throws <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a>, - <a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></pre> -<dl><dt><span class="strong">Throws:</span></dt> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/DimensionMismatchException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">DimensionMismatchException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NumberIsTooSmallException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NumberIsTooSmallException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/MaxCountExceededException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">MaxCountExceededException</a></code></dd> -<dd><code><a href="../../../../../../../apidocs/org/apache/commons/math3/exception/NoBracketingException.html?is-external=true" title="class or interface in org.apache.commons.math3.exception">NoBracketingException</a></code></dd></dl> -</li> -</ul> -</li> -</ul> -</li> -</ul> -</div> -</div> -<!-- ========= END OF CLASS DATA ========= --> -<!-- ======= START OF BOTTOM NAVBAR ====== --> -<div class="bottomNav"><a name="navbar_bottom"> -<!-- --> -</a><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow"> -<!-- --> -</a> -<ul class="navList" title="Navigation"> -<li><a href="../../../../../../overview-summary.html">Overview</a></li> -<li><a href="package-summary.html">Package</a></li> -<li class="navBarCell1Rev">Class</li> -<li><a href="class-use/GillIntegratorTest.html">Use</a></li> -<li><a href="package-tree.html">Tree</a></li> -<li><a href="../../../../../../deprecated-list.html">Deprecated</a></li> -<li><a href="../../../../../../index-all.html">Index</a></li> -<li><a href="../../../../../../help-doc.html">Help</a></li> -</ul> -<div class="aboutLanguage"><em><script type="text/javascript" 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http://git-wip-us.apache.org/repos/asf/commons-complex/blob/b3576eeb/site-content/.svn/pristine/05/056296ea97240393b9d6163118b2e70da46e20d0.svn-base ---------------------------------------------------------------------- diff --git a/site-content/.svn/pristine/05/056296ea97240393b9d6163118b2e70da46e20d0.svn-base b/site-content/.svn/pristine/05/056296ea97240393b9d6163118b2e70da46e20d0.svn-base deleted file mode 100644 index ae6e93d..0000000 --- a/site-content/.svn/pristine/05/056296ea97240393b9d6163118b2e70da46e20d0.svn-base +++ /dev/null @@ -1,419 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";> -<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> -<head><meta http-equiv="content-type" content="text/html; charset=UTF-8" /> -<title>BetaDistribution xref</title> -<link type="text/css" rel="stylesheet" href="../../../../../stylesheet.css" /> -</head> -<body> -<div id="overview"><a href="../../../../../../apidocs/org/apache/commons/math3/distribution/BetaDistribution.html">View Javadoc</a></div><pre> -<a class="jxr_linenumber" name="L1" href="#L1">1</a> <em class="jxr_comment">/*</em> -<a class="jxr_linenumber" name="L2" href="#L2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em> -<a class="jxr_linenumber" name="L3" href="#L3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em> -<a class="jxr_linenumber" name="L4" href="#L4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em> -<a class="jxr_linenumber" name="L5" href="#L5">5</a> <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em> -<a class="jxr_linenumber" name="L6" href="#L6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em> -<a class="jxr_linenumber" name="L7" href="#L7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em> -<a class="jxr_linenumber" name="L8" href="#L8">8</a> <em class="jxr_comment"> *</em> -<a class="jxr_linenumber" name="L9" href="#L9">9</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2."; target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.</a>0</em> -<a class="jxr_linenumber" name="L10" href="#L10">10</a> <em class="jxr_comment"> *</em> -<a class="jxr_linenumber" name="L11" href="#L11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em> -<a class="jxr_linenumber" name="L12" href="#L12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em> -<a class="jxr_linenumber" name="L13" href="#L13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em> -<a class="jxr_linenumber" name="L14" href="#L14">14</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em> -<a class="jxr_linenumber" name="L15" href="#L15">15</a> <em class="jxr_comment"> * limitations under the License.</em> -<a class="jxr_linenumber" name="L16" href="#L16">16</a> <em class="jxr_comment"> */</em> -<a class="jxr_linenumber" name="L17" href="#L17">17</a> <strong class="jxr_keyword">package</strong> org.apache.commons.math3.distribution; -<a class="jxr_linenumber" name="L18" href="#L18">18</a> -<a class="jxr_linenumber" name="L19" href="#L19">19</a> <strong class="jxr_keyword">import</strong> org.apache.commons.math3.exception.NumberIsTooSmallException; -<a class="jxr_linenumber" name="L20" href="#L20">20</a> <strong class="jxr_keyword">import</strong> org.apache.commons.math3.exception.util.LocalizedFormats; -<a class="jxr_linenumber" name="L21" href="#L21">21</a> <strong class="jxr_keyword">import</strong> org.apache.commons.math3.random.RandomGenerator; -<a class="jxr_linenumber" name="L22" href="#L22">22</a> <strong class="jxr_keyword">import</strong> org.apache.commons.math3.random.Well19937c; -<a class="jxr_linenumber" name="L23" href="#L23">23</a> <strong class="jxr_keyword">import</strong> org.apache.commons.math3.special.Beta; -<a class="jxr_linenumber" name="L24" href="#L24">24</a> <strong class="jxr_keyword">import</strong> org.apache.commons.math3.special.Gamma; -<a class="jxr_linenumber" name="L25" href="#L25">25</a> <strong class="jxr_keyword">import</strong> org.apache.commons.math3.util.FastMath; -<a class="jxr_linenumber" name="L26" href="#L26">26</a> <strong class="jxr_keyword">import</strong> org.apache.commons.math3.util.Precision; -<a class="jxr_linenumber" name="L27" href="#L27">27</a> -<a class="jxr_linenumber" name="L28" href="#L28">28</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L29" href="#L29">29</a> <em class="jxr_javadoccomment"> * Implements the Beta distribution.</em> -<a class="jxr_linenumber" name="L30" href="#L30">30</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L31" href="#L31">31</a> <em class="jxr_javadoccomment"> * @see <a href="<a href="http://en.wikipedia.org/wiki/Beta_distribution"; target="alexandria_uri">http://en.wikipedia.org/wiki/Beta_distribution</a>">Beta distribution</a></em> -<a class="jxr_linenumber" name="L32" href="#L32">32</a> <em class="jxr_javadoccomment"> * @since 2.0 (changed to concrete class in 3.0)</em> -<a class="jxr_linenumber" name="L33" href="#L33">33</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L34" href="#L34">34</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/commons/math3/distribution/BetaDistribution.html">BetaDistribution</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../org/apache/commons/math3/distribution/AbstractRealDistribution.html">AbstractRealDistribution</a> { -<a class="jxr_linenumber" name="L35" href="#L35">35</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L36" href="#L36">36</a> <em class="jxr_javadoccomment"> * Default inverse cumulative probability accuracy.</em> -<a class="jxr_linenumber" name="L37" href="#L37">37</a> <em class="jxr_javadoccomment"> * @since 2.1</em> -<a class="jxr_linenumber" name="L38" href="#L38">38</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L39" href="#L39">39</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> DEFAULT_INVERSE_ABSOLUTE_ACCURACY = 1e-9; -<a class="jxr_linenumber" name="L40" href="#L40">40</a> <em class="jxr_javadoccomment">/** Serializable version identifier. */</em> -<a class="jxr_linenumber" name="L41" href="#L41">41</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = -1221965979403477668L; -<a class="jxr_linenumber" name="L42" href="#L42">42</a> <em class="jxr_javadoccomment">/** First shape parameter. */</em> -<a class="jxr_linenumber" name="L43" href="#L43">43</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> alpha; -<a class="jxr_linenumber" name="L44" href="#L44">44</a> <em class="jxr_javadoccomment">/** Second shape parameter. */</em> -<a class="jxr_linenumber" name="L45" href="#L45">45</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> beta; -<a class="jxr_linenumber" name="L46" href="#L46">46</a> <em class="jxr_javadoccomment">/** Normalizing factor used in density computations.</em> -<a class="jxr_linenumber" name="L47" href="#L47">47</a> <em class="jxr_javadoccomment"> * updated whenever alpha or beta are changed.</em> -<a class="jxr_linenumber" name="L48" href="#L48">48</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L49" href="#L49">49</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">double</strong> z; -<a class="jxr_linenumber" name="L50" href="#L50">50</a> <em class="jxr_javadoccomment">/** Inverse cumulative probability accuracy. */</em> -<a class="jxr_linenumber" name="L51" href="#L51">51</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> solverAbsoluteAccuracy; -<a class="jxr_linenumber" name="L52" href="#L52">52</a> -<a class="jxr_linenumber" name="L53" href="#L53">53</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L54" href="#L54">54</a> <em class="jxr_javadoccomment"> * Build a new instance.</em> -<a class="jxr_linenumber" name="L55" href="#L55">55</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="L56" href="#L56">56</a> <em class="jxr_javadoccomment"> * <b>Note:</b> this constructor will implicitly create an instance of</em> -<a class="jxr_linenumber" name="L57" href="#L57">57</a> <em class="jxr_javadoccomment"> * {@link Well19937c} as random generator to be used for sampling only (see</em> -<a class="jxr_linenumber" name="L58" href="#L58">58</a> <em class="jxr_javadoccomment"> * {@link #sample()} and {@link #sample(int)}). In case no sampling is</em> -<a class="jxr_linenumber" name="L59" href="#L59">59</a> <em class="jxr_javadoccomment"> * needed for the created distribution, it is advised to pass {@code null}</em> -<a class="jxr_linenumber" name="L60" href="#L60">60</a> <em class="jxr_javadoccomment"> * as random generator via the appropriate constructors to avoid the</em> -<a class="jxr_linenumber" name="L61" href="#L61">61</a> <em class="jxr_javadoccomment"> * additional initialisation overhead.</em> -<a class="jxr_linenumber" name="L62" href="#L62">62</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L63" href="#L63">63</a> <em class="jxr_javadoccomment"> * @param alpha First shape parameter (must be positive).</em> -<a class="jxr_linenumber" name="L64" href="#L64">64</a> <em class="jxr_javadoccomment"> * @param beta Second shape parameter (must be positive).</em> -<a class="jxr_linenumber" name="L65" href="#L65">65</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L66" href="#L66">66</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/commons/math3/distribution/BetaDistribution.html">BetaDistribution</a>(<strong class="jxr_keyword">double</strong> alpha, <strong class="jxr_keyword">double</strong> beta) { -<a class="jxr_linenumber" name="L67" href="#L67">67</a> <strong class="jxr_keyword">this</strong>(alpha, beta, DEFAULT_INVERSE_ABSOLUTE_ACCURACY); -<a class="jxr_linenumber" name="L68" href="#L68">68</a> } -<a class="jxr_linenumber" name="L69" href="#L69">69</a> -<a class="jxr_linenumber" name="L70" href="#L70">70</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L71" href="#L71">71</a> <em class="jxr_javadoccomment"> * Build a new instance.</em> -<a class="jxr_linenumber" name="L72" href="#L72">72</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="L73" href="#L73">73</a> <em class="jxr_javadoccomment"> * <b>Note:</b> this constructor will implicitly create an instance of</em> -<a class="jxr_linenumber" name="L74" href="#L74">74</a> <em class="jxr_javadoccomment"> * {@link Well19937c} as random generator to be used for sampling only (see</em> -<a class="jxr_linenumber" name="L75" href="#L75">75</a> <em class="jxr_javadoccomment"> * {@link #sample()} and {@link #sample(int)}). In case no sampling is</em> -<a class="jxr_linenumber" name="L76" href="#L76">76</a> <em class="jxr_javadoccomment"> * needed for the created distribution, it is advised to pass {@code null}</em> -<a class="jxr_linenumber" name="L77" href="#L77">77</a> <em class="jxr_javadoccomment"> * as random generator via the appropriate constructors to avoid the</em> -<a class="jxr_linenumber" name="L78" href="#L78">78</a> <em class="jxr_javadoccomment"> * additional initialisation overhead.</em> -<a class="jxr_linenumber" name="L79" href="#L79">79</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L80" href="#L80">80</a> <em class="jxr_javadoccomment"> * @param alpha First shape parameter (must be positive).</em> -<a class="jxr_linenumber" name="L81" href="#L81">81</a> <em class="jxr_javadoccomment"> * @param beta Second shape parameter (must be positive).</em> -<a class="jxr_linenumber" name="L82" href="#L82">82</a> <em class="jxr_javadoccomment"> * @param inverseCumAccuracy Maximum absolute error in inverse</em> -<a class="jxr_linenumber" name="L83" href="#L83">83</a> <em class="jxr_javadoccomment"> * cumulative probability estimates (defaults to</em> -<a class="jxr_linenumber" name="L84" href="#L84">84</a> <em class="jxr_javadoccomment"> * {@link #DEFAULT_INVERSE_ABSOLUTE_ACCURACY}).</em> -<a class="jxr_linenumber" name="L85" href="#L85">85</a> <em class="jxr_javadoccomment"> * @since 2.1</em> -<a class="jxr_linenumber" name="L86" href="#L86">86</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L87" href="#L87">87</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/commons/math3/distribution/BetaDistribution.html">BetaDistribution</a>(<strong class="jxr_keyword">double</strong> alpha, <strong class="jxr_keyword">double</strong> beta, <strong class="jxr_keyword">double</strong> inverseCumAccuracy) { -<a class="jxr_linenumber" name="L88" href="#L88">88</a> <strong class="jxr_keyword">this</strong>(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/commons/math3/random/Well19937c.html">Well19937c</a>(), alpha, beta, inverseCumAccuracy); -<a class="jxr_linenumber" name="L89" href="#L89">89</a> } -<a class="jxr_linenumber" name="L90" href="#L90">90</a> -<a class="jxr_linenumber" name="L91" href="#L91">91</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L92" href="#L92">92</a> <em class="jxr_javadoccomment"> * Creates a &beta; distribution.</em> -<a class="jxr_linenumber" name="L93" href="#L93">93</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L94" href="#L94">94</a> <em class="jxr_javadoccomment"> * @param rng Random number generator.</em> -<a class="jxr_linenumber" name="L95" href="#L95">95</a> <em class="jxr_javadoccomment"> * @param alpha First shape parameter (must be positive).</em> -<a class="jxr_linenumber" name="L96" href="#L96">96</a> <em class="jxr_javadoccomment"> * @param beta Second shape parameter (must be positive).</em> -<a class="jxr_linenumber" name="L97" href="#L97">97</a> <em class="jxr_javadoccomment"> * @since 3.3</em> -<a class="jxr_linenumber" name="L98" href="#L98">98</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L99" href="#L99">99</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/commons/math3/distribution/BetaDistribution.html">BetaDistribution</a>(<a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html">RandomGenerator</a> rng, <strong class="jxr_keyword">double</strong> alpha, <strong class="jxr_keyword">double</strong> beta) { -<a class="jxr_linenumber" name="L100" href="#L100">100</a> <strong class="jxr_keyword">this</strong>(rng, alpha, beta, DEFAULT_INVERSE_ABSOLUTE_ACCURACY); -<a class="jxr_linenumber" name="L101" href="#L101">101</a> } -<a class="jxr_linenumber" name="L102" href="#L102">102</a> -<a class="jxr_linenumber" name="L103" href="#L103">103</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L104" href="#L104">104</a> <em class="jxr_javadoccomment"> * Creates a &beta; distribution.</em> -<a class="jxr_linenumber" name="L105" href="#L105">105</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L106" href="#L106">106</a> <em class="jxr_javadoccomment"> * @param rng Random number generator.</em> -<a class="jxr_linenumber" name="L107" href="#L107">107</a> <em class="jxr_javadoccomment"> * @param alpha First shape parameter (must be positive).</em> -<a class="jxr_linenumber" name="L108" href="#L108">108</a> <em class="jxr_javadoccomment"> * @param beta Second shape parameter (must be positive).</em> -<a class="jxr_linenumber" name="L109" href="#L109">109</a> <em class="jxr_javadoccomment"> * @param inverseCumAccuracy Maximum absolute error in inverse</em> -<a class="jxr_linenumber" name="L110" href="#L110">110</a> <em class="jxr_javadoccomment"> * cumulative probability estimates (defaults to</em> -<a class="jxr_linenumber" name="L111" href="#L111">111</a> <em class="jxr_javadoccomment"> * {@link #DEFAULT_INVERSE_ABSOLUTE_ACCURACY}).</em> -<a class="jxr_linenumber" name="L112" href="#L112">112</a> <em class="jxr_javadoccomment"> * @since 3.1</em> -<a class="jxr_linenumber" name="L113" href="#L113">113</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L114" href="#L114">114</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/commons/math3/distribution/BetaDistribution.html">BetaDistribution</a>(<a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html">RandomGenerator</a> rng, -<a class="jxr_linenumber" name="L115" href="#L115">115</a> <strong class="jxr_keyword">double</strong> alpha, -<a class="jxr_linenumber" name="L116" href="#L116">116</a> <strong class="jxr_keyword">double</strong> beta, -<a class="jxr_linenumber" name="L117" href="#L117">117</a> <strong class="jxr_keyword">double</strong> inverseCumAccuracy) { -<a class="jxr_linenumber" name="L118" href="#L118">118</a> <strong class="jxr_keyword">super</strong>(rng); -<a class="jxr_linenumber" name="L119" href="#L119">119</a> -<a class="jxr_linenumber" name="L120" href="#L120">120</a> <strong class="jxr_keyword">this</strong>.alpha = alpha; -<a class="jxr_linenumber" name="L121" href="#L121">121</a> <strong class="jxr_keyword">this</strong>.beta = beta; -<a class="jxr_linenumber" name="L122" href="#L122">122</a> z = Double.NaN; -<a class="jxr_linenumber" name="L123" href="#L123">123</a> solverAbsoluteAccuracy = inverseCumAccuracy; -<a class="jxr_linenumber" name="L124" href="#L124">124</a> } -<a class="jxr_linenumber" name="L125" href="#L125">125</a> -<a class="jxr_linenumber" name="L126" href="#L126">126</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L127" href="#L127">127</a> <em class="jxr_javadoccomment"> * Access the first shape parameter, {@code alpha}.</em> -<a class="jxr_linenumber" name="L128" href="#L128">128</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L129" href="#L129">129</a> <em class="jxr_javadoccomment"> * @return the first shape parameter.</em> -<a class="jxr_linenumber" name="L130" href="#L130">130</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L131" href="#L131">131</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> getAlpha() { -<a class="jxr_linenumber" name="L132" href="#L132">132</a> <strong class="jxr_keyword">return</strong> alpha; -<a class="jxr_linenumber" name="L133" href="#L133">133</a> } -<a class="jxr_linenumber" name="L134" href="#L134">134</a> -<a class="jxr_linenumber" name="L135" href="#L135">135</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L136" href="#L136">136</a> <em class="jxr_javadoccomment"> * Access the second shape parameter, {@code beta}.</em> -<a class="jxr_linenumber" name="L137" href="#L137">137</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L138" href="#L138">138</a> <em class="jxr_javadoccomment"> * @return the second shape parameter.</em> -<a class="jxr_linenumber" name="L139" href="#L139">139</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L140" href="#L140">140</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> getBeta() { -<a class="jxr_linenumber" name="L141" href="#L141">141</a> <strong class="jxr_keyword">return</strong> beta; -<a class="jxr_linenumber" name="L142" href="#L142">142</a> } -<a class="jxr_linenumber" name="L143" href="#L143">143</a> -<a class="jxr_linenumber" name="L144" href="#L144">144</a> <em class="jxr_javadoccomment">/** Recompute the normalization factor. */</em> -<a class="jxr_linenumber" name="L145" href="#L145">145</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> recomputeZ() { -<a class="jxr_linenumber" name="L146" href="#L146">146</a> <strong class="jxr_keyword">if</strong> (Double.isNaN(z)) { -<a class="jxr_linenumber" name="L147" href="#L147">147</a> z = Gamma.logGamma(alpha) + Gamma.logGamma(beta) - Gamma.logGamma(alpha + beta); -<a class="jxr_linenumber" name="L148" href="#L148">148</a> } -<a class="jxr_linenumber" name="L149" href="#L149">149</a> } -<a class="jxr_linenumber" name="L150" href="#L150">150</a> -<a class="jxr_linenumber" name="L151" href="#L151">151</a> <em class="jxr_javadoccomment">/** {@inheritDoc} */</em> -<a class="jxr_linenumber" name="L152" href="#L152">152</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> density(<strong class="jxr_keyword">double</strong> x) { -<a class="jxr_linenumber" name="L153" href="#L153">153</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> logDensity = logDensity(x); -<a class="jxr_linenumber" name="L154" href="#L154">154</a> <strong class="jxr_keyword">return</strong> logDensity == Double.NEGATIVE_INFINITY ? 0 : FastMath.exp(logDensity); -<a class="jxr_linenumber" name="L155" href="#L155">155</a> } -<a class="jxr_linenumber" name="L156" href="#L156">156</a> -<a class="jxr_linenumber" name="L157" href="#L157">157</a> <em class="jxr_javadoccomment">/** {@inheritDoc} **/</em> -<a class="jxr_linenumber" name="L158" href="#L158">158</a> @Override -<a class="jxr_linenumber" name="L159" href="#L159">159</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> logDensity(<strong class="jxr_keyword">double</strong> x) { -<a class="jxr_linenumber" name="L160" href="#L160">160</a> recomputeZ(); -<a class="jxr_linenumber" name="L161" href="#L161">161</a> <strong class="jxr_keyword">if</strong> (x < 0 || x > 1) { -<a class="jxr_linenumber" name="L162" href="#L162">162</a> <strong class="jxr_keyword">return</strong> Double.NEGATIVE_INFINITY; -<a class="jxr_linenumber" name="L163" href="#L163">163</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (x == 0) { -<a class="jxr_linenumber" name="L164" href="#L164">164</a> <strong class="jxr_keyword">if</strong> (alpha < 1) { -<a class="jxr_linenumber" name="L165" href="#L165">165</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/commons/math3/exception/NumberIsTooSmallException.html">NumberIsTooSmallException</a>(LocalizedFormats.CANNOT_COMPUTE_BETA_DENSITY_AT_0_FOR_SOME_ALPHA, alpha, 1, false); -<a class="jxr_linenumber" name="L166" href="#L166">166</a> } -<a class="jxr_linenumber" name="L167" href="#L167">167</a> <strong class="jxr_keyword">return</strong> Double.NEGATIVE_INFINITY; -<a class="jxr_linenumber" name="L168" href="#L168">168</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (x == 1) { -<a class="jxr_linenumber" name="L169" href="#L169">169</a> <strong class="jxr_keyword">if</strong> (beta < 1) { -<a class="jxr_linenumber" name="L170" href="#L170">170</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/commons/math3/exception/NumberIsTooSmallException.html">NumberIsTooSmallException</a>(LocalizedFormats.CANNOT_COMPUTE_BETA_DENSITY_AT_1_FOR_SOME_BETA, beta, 1, false); -<a class="jxr_linenumber" name="L171" href="#L171">171</a> } -<a class="jxr_linenumber" name="L172" href="#L172">172</a> <strong class="jxr_keyword">return</strong> Double.NEGATIVE_INFINITY; -<a class="jxr_linenumber" name="L173" href="#L173">173</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="L174" href="#L174">174</a> <strong class="jxr_keyword">double</strong> logX = FastMath.log(x); -<a class="jxr_linenumber" name="L175" href="#L175">175</a> <strong class="jxr_keyword">double</strong> log1mX = FastMath.log1p(-x); -<a class="jxr_linenumber" name="L176" href="#L176">176</a> <strong class="jxr_keyword">return</strong> (alpha - 1) * logX + (beta - 1) * log1mX - z; -<a class="jxr_linenumber" name="L177" href="#L177">177</a> } -<a class="jxr_linenumber" name="L178" href="#L178">178</a> } -<a class="jxr_linenumber" name="L179" href="#L179">179</a> -<a class="jxr_linenumber" name="L180" href="#L180">180</a> <em class="jxr_javadoccomment">/** {@inheritDoc} */</em> -<a class="jxr_linenumber" name="L181" href="#L181">181</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> cumulativeProbability(<strong class="jxr_keyword">double</strong> x) { -<a class="jxr_linenumber" name="L182" href="#L182">182</a> <strong class="jxr_keyword">if</strong> (x <= 0) { -<a class="jxr_linenumber" name="L183" href="#L183">183</a> <strong class="jxr_keyword">return</strong> 0; -<a class="jxr_linenumber" name="L184" href="#L184">184</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (x >= 1) { -<a class="jxr_linenumber" name="L185" href="#L185">185</a> <strong class="jxr_keyword">return</strong> 1; -<a class="jxr_linenumber" name="L186" href="#L186">186</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="L187" href="#L187">187</a> <strong class="jxr_keyword">return</strong> Beta.regularizedBeta(x, alpha, beta); -<a class="jxr_linenumber" name="L188" href="#L188">188</a> } -<a class="jxr_linenumber" name="L189" href="#L189">189</a> } -<a class="jxr_linenumber" name="L190" href="#L190">190</a> -<a class="jxr_linenumber" name="L191" href="#L191">191</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L192" href="#L192">192</a> <em class="jxr_javadoccomment"> * Return the absolute accuracy setting of the solver used to estimate</em> -<a class="jxr_linenumber" name="L193" href="#L193">193</a> <em class="jxr_javadoccomment"> * inverse cumulative probabilities.</em> -<a class="jxr_linenumber" name="L194" href="#L194">194</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L195" href="#L195">195</a> <em class="jxr_javadoccomment"> * @return the solver absolute accuracy.</em> -<a class="jxr_linenumber" name="L196" href="#L196">196</a> <em class="jxr_javadoccomment"> * @since 2.1</em> -<a class="jxr_linenumber" name="L197" href="#L197">197</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L198" href="#L198">198</a> @Override -<a class="jxr_linenumber" name="L199" href="#L199">199</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">double</strong> getSolverAbsoluteAccuracy() { -<a class="jxr_linenumber" name="L200" href="#L200">200</a> <strong class="jxr_keyword">return</strong> solverAbsoluteAccuracy; -<a class="jxr_linenumber" name="L201" href="#L201">201</a> } -<a class="jxr_linenumber" name="L202" href="#L202">202</a> -<a class="jxr_linenumber" name="L203" href="#L203">203</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L204" href="#L204">204</a> <em class="jxr_javadoccomment"> * {@inheritDoc}</em> -<a class="jxr_linenumber" name="L205" href="#L205">205</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L206" href="#L206">206</a> <em class="jxr_javadoccomment"> * For first shape parameter {@code alpha} and second shape parameter</em> -<a class="jxr_linenumber" name="L207" href="#L207">207</a> <em class="jxr_javadoccomment"> * {@code beta}, the mean is {@code alpha / (alpha + beta)}.</em> -<a class="jxr_linenumber" name="L208" href="#L208">208</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L209" href="#L209">209</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> getNumericalMean() { -<a class="jxr_linenumber" name="L210" href="#L210">210</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> a = getAlpha(); -<a class="jxr_linenumber" name="L211" href="#L211">211</a> <strong class="jxr_keyword">return</strong> a / (a + getBeta()); -<a class="jxr_linenumber" name="L212" href="#L212">212</a> } -<a class="jxr_linenumber" name="L213" href="#L213">213</a> -<a class="jxr_linenumber" name="L214" href="#L214">214</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L215" href="#L215">215</a> <em class="jxr_javadoccomment"> * {@inheritDoc}</em> -<a class="jxr_linenumber" name="L216" href="#L216">216</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L217" href="#L217">217</a> <em class="jxr_javadoccomment"> * For first shape parameter {@code alpha} and second shape parameter</em> -<a class="jxr_linenumber" name="L218" href="#L218">218</a> <em class="jxr_javadoccomment"> * {@code beta}, the variance is</em> -<a class="jxr_linenumber" name="L219" href="#L219">219</a> <em class="jxr_javadoccomment"> * {@code (alpha * beta) / [(alpha + beta)^2 * (alpha + beta + 1)]}.</em> -<a class="jxr_linenumber" name="L220" href="#L220">220</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L221" href="#L221">221</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> getNumericalVariance() { -<a class="jxr_linenumber" name="L222" href="#L222">222</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> a = getAlpha(); -<a class="jxr_linenumber" name="L223" href="#L223">223</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> b = getBeta(); -<a class="jxr_linenumber" name="L224" href="#L224">224</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> alphabetasum = a + b; -<a class="jxr_linenumber" name="L225" href="#L225">225</a> <strong class="jxr_keyword">return</strong> (a * b) / ((alphabetasum * alphabetasum) * (alphabetasum + 1)); -<a class="jxr_linenumber" name="L226" href="#L226">226</a> } -<a class="jxr_linenumber" name="L227" href="#L227">227</a> -<a class="jxr_linenumber" name="L228" href="#L228">228</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L229" href="#L229">229</a> <em class="jxr_javadoccomment"> * {@inheritDoc}</em> -<a class="jxr_linenumber" name="L230" href="#L230">230</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L231" href="#L231">231</a> <em class="jxr_javadoccomment"> * The lower bound of the support is always 0 no matter the parameters.</em> -<a class="jxr_linenumber" name="L232" href="#L232">232</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L233" href="#L233">233</a> <em class="jxr_javadoccomment"> * @return lower bound of the support (always 0)</em> -<a class="jxr_linenumber" name="L234" href="#L234">234</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L235" href="#L235">235</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> getSupportLowerBound() { -<a class="jxr_linenumber" name="L236" href="#L236">236</a> <strong class="jxr_keyword">return</strong> 0; -<a class="jxr_linenumber" name="L237" href="#L237">237</a> } -<a class="jxr_linenumber" name="L238" href="#L238">238</a> -<a class="jxr_linenumber" name="L239" href="#L239">239</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L240" href="#L240">240</a> <em class="jxr_javadoccomment"> * {@inheritDoc}</em> -<a class="jxr_linenumber" name="L241" href="#L241">241</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L242" href="#L242">242</a> <em class="jxr_javadoccomment"> * The upper bound of the support is always 1 no matter the parameters.</em> -<a class="jxr_linenumber" name="L243" href="#L243">243</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L244" href="#L244">244</a> <em class="jxr_javadoccomment"> * @return upper bound of the support (always 1)</em> -<a class="jxr_linenumber" name="L245" href="#L245">245</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L246" href="#L246">246</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> getSupportUpperBound() { -<a class="jxr_linenumber" name="L247" href="#L247">247</a> <strong class="jxr_keyword">return</strong> 1; -<a class="jxr_linenumber" name="L248" href="#L248">248</a> } -<a class="jxr_linenumber" name="L249" href="#L249">249</a> -<a class="jxr_linenumber" name="L250" href="#L250">250</a> <em class="jxr_javadoccomment">/** {@inheritDoc} */</em> -<a class="jxr_linenumber" name="L251" href="#L251">251</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isSupportLowerBoundInclusive() { -<a class="jxr_linenumber" name="L252" href="#L252">252</a> <strong class="jxr_keyword">return</strong> false; -<a class="jxr_linenumber" name="L253" href="#L253">253</a> } -<a class="jxr_linenumber" name="L254" href="#L254">254</a> -<a class="jxr_linenumber" name="L255" href="#L255">255</a> <em class="jxr_javadoccomment">/** {@inheritDoc} */</em> -<a class="jxr_linenumber" name="L256" href="#L256">256</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isSupportUpperBoundInclusive() { -<a class="jxr_linenumber" name="L257" href="#L257">257</a> <strong class="jxr_keyword">return</strong> false; -<a class="jxr_linenumber" name="L258" href="#L258">258</a> } -<a class="jxr_linenumber" name="L259" href="#L259">259</a> -<a class="jxr_linenumber" name="L260" href="#L260">260</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L261" href="#L261">261</a> <em class="jxr_javadoccomment"> * {@inheritDoc}</em> -<a class="jxr_linenumber" name="L262" href="#L262">262</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L263" href="#L263">263</a> <em class="jxr_javadoccomment"> * The support of this distribution is connected.</em> -<a class="jxr_linenumber" name="L264" href="#L264">264</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="L265" href="#L265">265</a> <em class="jxr_javadoccomment"> * @return {@code true}</em> -<a class="jxr_linenumber" name="L266" href="#L266">266</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L267" href="#L267">267</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isSupportConnected() { -<a class="jxr_linenumber" name="L268" href="#L268">268</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>; -<a class="jxr_linenumber" name="L269" href="#L269">269</a> } -<a class="jxr_linenumber" name="L270" href="#L270">270</a> -<a class="jxr_linenumber" name="L271" href="#L271">271</a> -<a class="jxr_linenumber" name="L272" href="#L272">272</a> <em class="jxr_javadoccomment">/** {@inheritDoc}</em> -<a class="jxr_linenumber" name="L273" href="#L273">273</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="L274" href="#L274">274</a> <em class="jxr_javadoccomment"> * Sampling is performed using Cheng algorithms:</em> -<a class="jxr_linenumber" name="L275" href="#L275">275</a> <em class="jxr_javadoccomment"> * </p></em> -<a class="jxr_linenumber" name="L276" href="#L276">276</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="L277" href="#L277">277</a> <em class="jxr_javadoccomment"> * R. C. H. Cheng, "Generating beta variates with nonintegral shape parameters.".</em> -<a class="jxr_linenumber" name="L278" href="#L278">278</a> <em class="jxr_javadoccomment"> * Communications of the ACM, 21, 317ââ¬â322, 1978.</em> -<a class="jxr_linenumber" name="L279" href="#L279">279</a> <em class="jxr_javadoccomment"> * </p></em> -<a class="jxr_linenumber" name="L280" href="#L280">280</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L281" href="#L281">281</a> @Override -<a class="jxr_linenumber" name="L282" href="#L282">282</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> sample() { -<a class="jxr_linenumber" name="L283" href="#L283">283</a> <strong class="jxr_keyword">return</strong> ChengBetaSampler.sample(random, alpha, beta); -<a class="jxr_linenumber" name="L284" href="#L284">284</a> } -<a class="jxr_linenumber" name="L285" href="#L285">285</a> -<a class="jxr_linenumber" name="L286" href="#L286">286</a> <em class="jxr_javadoccomment">/** Utility class implementing Cheng's algorithms for beta distribution sampling.</em> -<a class="jxr_linenumber" name="L287" href="#L287">287</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="L288" href="#L288">288</a> <em class="jxr_javadoccomment"> * R. C. H. Cheng, "Generating beta variates with nonintegral shape parameters.".</em> -<a class="jxr_linenumber" name="L289" href="#L289">289</a> <em class="jxr_javadoccomment"> * Communications of the ACM, 21, 317ââ¬â322, 1978.</em> -<a class="jxr_linenumber" name="L290" href="#L290">290</a> <em class="jxr_javadoccomment"> * </p></em> -<a class="jxr_linenumber" name="L291" href="#L291">291</a> <em class="jxr_javadoccomment"> * @since 3.6</em> -<a class="jxr_linenumber" name="L292" href="#L292">292</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L293" href="#L293">293</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/commons/math3/distribution/BetaDistribution.html">ChengBetaSampler</a> { -<a class="jxr_linenumber" name="L294" href="#L294">294</a> -<a class="jxr_linenumber" name="L295" href="#L295">295</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L296" href="#L296">296</a> <em class="jxr_javadoccomment"> * Returns one sample using Cheng's sampling algorithm.</em> -<a class="jxr_linenumber" name="L297" href="#L297">297</a> <em class="jxr_javadoccomment"> * @param random random generator to use</em> -<a class="jxr_linenumber" name="L298" href="#L298">298</a> <em class="jxr_javadoccomment"> * @param alpha distribution first shape parameter</em> -<a class="jxr_linenumber" name="L299" href="#L299">299</a> <em class="jxr_javadoccomment"> * @param beta distribution second shape parameter</em> -<a class="jxr_linenumber" name="L300" href="#L300">300</a> <em class="jxr_javadoccomment"> * @return sampled value</em> -<a class="jxr_linenumber" name="L301" href="#L301">301</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L302" href="#L302">302</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">double</strong> sample(<a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html">RandomGenerator</a> random, <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> alpha, <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> beta) { -<a class="jxr_linenumber" name="L303" href="#L303">303</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> a = FastMath.min(alpha, beta); -<a class="jxr_linenumber" name="L304" href="#L304">304</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> b = FastMath.max(alpha, beta); -<a class="jxr_linenumber" name="L305" href="#L305">305</a> -<a class="jxr_linenumber" name="L306" href="#L306">306</a> <strong class="jxr_keyword">if</strong> (a > 1) { -<a class="jxr_linenumber" name="L307" href="#L307">307</a> <strong class="jxr_keyword">return</strong> algorithmBB(random, alpha, a, b); -<a class="jxr_linenumber" name="L308" href="#L308">308</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="L309" href="#L309">309</a> <strong class="jxr_keyword">return</strong> algorithmBC(random, alpha, b, a); -<a class="jxr_linenumber" name="L310" href="#L310">310</a> } -<a class="jxr_linenumber" name="L311" href="#L311">311</a> } -<a class="jxr_linenumber" name="L312" href="#L312">312</a> -<a class="jxr_linenumber" name="L313" href="#L313">313</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L314" href="#L314">314</a> <em class="jxr_javadoccomment"> * Returns one sample using Cheng's BB algorithm, when both &alpha; and &beta; are greater than 1.</em> -<a class="jxr_linenumber" name="L315" href="#L315">315</a> <em class="jxr_javadoccomment"> * @param random random generator to use</em> -<a class="jxr_linenumber" name="L316" href="#L316">316</a> <em class="jxr_javadoccomment"> * @param a0 distribution first shape parameter (&alpha;)</em> -<a class="jxr_linenumber" name="L317" href="#L317">317</a> <em class="jxr_javadoccomment"> * @param a min(&alpha;, &beta;) where &alpha;, &beta; are the two distribution shape parameters</em> -<a class="jxr_linenumber" name="L318" href="#L318">318</a> <em class="jxr_javadoccomment"> * @param b max(&alpha;, &beta;) where &alpha;, &beta; are the two distribution shape parameters</em> -<a class="jxr_linenumber" name="L319" href="#L319">319</a> <em class="jxr_javadoccomment"> * @return sampled value</em> -<a class="jxr_linenumber" name="L320" href="#L320">320</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L321" href="#L321">321</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">double</strong> algorithmBB(<a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html">RandomGenerator</a> random, -<a class="jxr_linenumber" name="L322" href="#L322">322</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> a0, -<a class="jxr_linenumber" name="L323" href="#L323">323</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> a, -<a class="jxr_linenumber" name="L324" href="#L324">324</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> b) { -<a class="jxr_linenumber" name="L325" href="#L325">325</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> alpha = a + b; -<a class="jxr_linenumber" name="L326" href="#L326">326</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> beta = FastMath.sqrt((alpha - 2.) / (2. * a * b - alpha)); -<a class="jxr_linenumber" name="L327" href="#L327">327</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> gamma = a + 1. / beta; -<a class="jxr_linenumber" name="L328" href="#L328">328</a> -<a class="jxr_linenumber" name="L329" href="#L329">329</a> <strong class="jxr_keyword">double</strong> r; -<a class="jxr_linenumber" name="L330" href="#L330">330</a> <strong class="jxr_keyword">double</strong> w; -<a class="jxr_linenumber" name="L331" href="#L331">331</a> <strong class="jxr_keyword">double</strong> t; -<a class="jxr_linenumber" name="L332" href="#L332">332</a> <strong class="jxr_keyword">do</strong> { -<a class="jxr_linenumber" name="L333" href="#L333">333</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> u1 = random.nextDouble(); -<a class="jxr_linenumber" name="L334" href="#L334">334</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> u2 = random.nextDouble(); -<a class="jxr_linenumber" name="L335" href="#L335">335</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> v = beta * (FastMath.log(u1) - FastMath.log1p(-u1)); -<a class="jxr_linenumber" name="L336" href="#L336">336</a> w = a * FastMath.exp(v); -<a class="jxr_linenumber" name="L337" href="#L337">337</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> z = u1 * u1 * u2; -<a class="jxr_linenumber" name="L338" href="#L338">338</a> r = gamma * v - 1.3862944; -<a class="jxr_linenumber" name="L339" href="#L339">339</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> s = a + r - w; -<a class="jxr_linenumber" name="L340" href="#L340">340</a> <strong class="jxr_keyword">if</strong> (s + 2.609438 >= 5 * z) { -<a class="jxr_linenumber" name="L341" href="#L341">341</a> <strong class="jxr_keyword">break</strong>; -<a class="jxr_linenumber" name="L342" href="#L342">342</a> } -<a class="jxr_linenumber" name="L343" href="#L343">343</a> -<a class="jxr_linenumber" name="L344" href="#L344">344</a> t = FastMath.log(z); -<a class="jxr_linenumber" name="L345" href="#L345">345</a> <strong class="jxr_keyword">if</strong> (s >= t) { -<a class="jxr_linenumber" name="L346" href="#L346">346</a> <strong class="jxr_keyword">break</strong>; -<a class="jxr_linenumber" name="L347" href="#L347">347</a> } -<a class="jxr_linenumber" name="L348" href="#L348">348</a> } <strong class="jxr_keyword">while</strong> (r + alpha * (FastMath.log(alpha) - FastMath.log(b + w)) < t); -<a class="jxr_linenumber" name="L349" href="#L349">349</a> -<a class="jxr_linenumber" name="L350" href="#L350">350</a> w = FastMath.min(w, Double.MAX_VALUE); -<a class="jxr_linenumber" name="L351" href="#L351">351</a> <strong class="jxr_keyword">return</strong> Precision.equals(a, a0) ? w / (b + w) : b / (b + w); -<a class="jxr_linenumber" name="L352" href="#L352">352</a> } -<a class="jxr_linenumber" name="L353" href="#L353">353</a> -<a class="jxr_linenumber" name="L354" href="#L354">354</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="L355" href="#L355">355</a> <em class="jxr_javadoccomment"> * Returns one sample using Cheng's BC algorithm, when at least one of &alpha; and &beta; is smaller than 1.</em> -<a class="jxr_linenumber" name="L356" href="#L356">356</a> <em class="jxr_javadoccomment"> * @param random random generator to use</em> -<a class="jxr_linenumber" name="L357" href="#L357">357</a> <em class="jxr_javadoccomment"> * @param a0 distribution first shape parameter (&alpha;)</em> -<a class="jxr_linenumber" name="L358" href="#L358">358</a> <em class="jxr_javadoccomment"> * @param a max(&alpha;, &beta;) where &alpha;, &beta; are the two distribution shape parameters</em> -<a class="jxr_linenumber" name="L359" href="#L359">359</a> <em class="jxr_javadoccomment"> * @param b min(&alpha;, &beta;) where &alpha;, &beta; are the two distribution shape parameters</em> -<a class="jxr_linenumber" name="L360" href="#L360">360</a> <em class="jxr_javadoccomment"> * @return sampled value</em> -<a class="jxr_linenumber" name="L361" href="#L361">361</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="L362" href="#L362">362</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">double</strong> algorithmBC(<a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html">RandomGenerator</a> random, -<a class="jxr_linenumber" name="L363" href="#L363">363</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> a0, -<a class="jxr_linenumber" name="L364" href="#L364">364</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> a, -<a class="jxr_linenumber" name="L365" href="#L365">365</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> b) { -<a class="jxr_linenumber" name="L366" href="#L366">366</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> alpha = a + b; -<a class="jxr_linenumber" name="L367" href="#L367">367</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> beta = 1. / b; -<a class="jxr_linenumber" name="L368" href="#L368">368</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> delta = 1. + a - b; -<a class="jxr_linenumber" name="L369" href="#L369">369</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> k1 = delta * (0.0138889 + 0.0416667 * b) / (a * beta - 0.777778); -<a class="jxr_linenumber" name="L370" href="#L370">370</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> k2 = 0.25 + (0.5 + 0.25 / delta) * b; -<a class="jxr_linenumber" name="L371" href="#L371">371</a> -<a class="jxr_linenumber" name="L372" href="#L372">372</a> <strong class="jxr_keyword">double</strong> w; -<a class="jxr_linenumber" name="L373" href="#L373">373</a> <strong class="jxr_keyword">for</strong> (;;) { -<a class="jxr_linenumber" name="L374" href="#L374">374</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> u1 = random.nextDouble(); -<a class="jxr_linenumber" name="L375" href="#L375">375</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> u2 = random.nextDouble(); -<a class="jxr_linenumber" name="L376" href="#L376">376</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> y = u1 * u2; -<a class="jxr_linenumber" name="L377" href="#L377">377</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> z = u1 * y; -<a class="jxr_linenumber" name="L378" href="#L378">378</a> <strong class="jxr_keyword">if</strong> (u1 < 0.5) { -<a class="jxr_linenumber" name="L379" href="#L379">379</a> <strong class="jxr_keyword">if</strong> (0.25 * u2 + z - y >= k1) { -<a class="jxr_linenumber" name="L380" href="#L380">380</a> <strong class="jxr_keyword">continue</strong>; -<a class="jxr_linenumber" name="L381" href="#L381">381</a> } -<a class="jxr_linenumber" name="L382" href="#L382">382</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="L383" href="#L383">383</a> <strong class="jxr_keyword">if</strong> (z <= 0.25) { -<a class="jxr_linenumber" name="L384" href="#L384">384</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> v = beta * (FastMath.log(u1) - FastMath.log1p(-u1)); -<a class="jxr_linenumber" name="L385" href="#L385">385</a> w = a * FastMath.exp(v); -<a class="jxr_linenumber" name="L386" href="#L386">386</a> <strong class="jxr_keyword">break</strong>; -<a class="jxr_linenumber" name="L387" href="#L387">387</a> } -<a class="jxr_linenumber" name="L388" href="#L388">388</a> -<a class="jxr_linenumber" name="L389" href="#L389">389</a> <strong class="jxr_keyword">if</strong> (z >= k2) { -<a class="jxr_linenumber" name="L390" href="#L390">390</a> <strong class="jxr_keyword">continue</strong>; -<a class="jxr_linenumber" name="L391" href="#L391">391</a> } -<a class="jxr_linenumber" name="L392" href="#L392">392</a> } -<a class="jxr_linenumber" name="L393" href="#L393">393</a> -<a class="jxr_linenumber" name="L394" href="#L394">394</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> v = beta * (FastMath.log(u1) - FastMath.log1p(-u1)); -<a class="jxr_linenumber" name="L395" href="#L395">395</a> w = a * FastMath.exp(v); -<a class="jxr_linenumber" name="L396" href="#L396">396</a> <strong class="jxr_keyword">if</strong> (alpha * (FastMath.log(alpha) - FastMath.log(b + w) + v) - 1.3862944 >= FastMath.log(z)) { -<a class="jxr_linenumber" name="L397" href="#L397">397</a> <strong class="jxr_keyword">break</strong>; -<a class="jxr_linenumber" name="L398" href="#L398">398</a> } -<a class="jxr_linenumber" name="L399" href="#L399">399</a> } -<a class="jxr_linenumber" name="L400" href="#L400">400</a> -<a class="jxr_linenumber" name="L401" href="#L401">401</a> w = FastMath.min(w, Double.MAX_VALUE); -<a class="jxr_linenumber" name="L402" href="#L402">402</a> <strong class="jxr_keyword">return</strong> Precision.equals(a, a0) ? w / (b + w) : b / (b + w); -<a class="jxr_linenumber" name="L403" href="#L403">403</a> } -<a class="jxr_linenumber" name="L404" href="#L404">404</a> -<a class="jxr_linenumber" name="L405" href="#L405">405</a> } -<a class="jxr_linenumber" name="L406" href="#L406">406</a> } -</pre> -<hr/> -<div id="footer">Copyright © 2003–2016 <a href="http://www.apache.org/";>The Apache Software Foundation</a>. All rights reserved.</div> -</body> -</html>
