153 lines
4.6 KiB
HTML
153 lines
4.6 KiB
HTML
<header>
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<title> jFuzzyLogic: Open Source Fuzzy Logic (Java) </title>
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<link rel="stylesheet" href="style.css" type="text/css" media="screen" />
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<style type="text/css" media="all">
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body { background: url(./images/bg_gradient.jpg) repeat-x; }
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</style>
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</header>
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<div align="center">
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<div id="wrap">
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<div id="header">
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<div class="logo">
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<a href="http://jfuzzylogic.sourceforge.net/">jFuzzyLogic</a>
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<p style="font-size: 12pt" align=right><b>Open Source Fuzzy Logic library and FCL language implementation</b></p>
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</div>
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</div>
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<div id="menu">
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<ul>
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<li><a href="http://jfuzzylogic.sourceforge.net/">Home</a></li>
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<li class="page_item"><a href="example_java.html" title="Documentation">Examples</a></li>
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<li class="page_item"><a href="classes.html" title="Documentation">Documentation</a></li>
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<li class="page_item"><a href="faq.html" title="FAQ">FAQ</a></li>
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<li class="page_item"><a href="http://sourceforge.net/projects/jfuzzylogic/files/jfuzzylogic/jFuzzyLogic_v3.0.jar/download" title="Download">Download</a></li>
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<li class="page_item"><a href="about.html" title="About">About</a></li>
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</ul>
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</div>
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<div id="content">
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<div id="right">
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<div class="ltop"></div>
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<div class="lmid">
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<b>
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<center><h2>jFuzzyLogic</h2></center>
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<a href="http://sourceforge.net/projects/jfuzzylogic">Download</a><br>
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<a href="plugin.html">Eclipse plugin</a><br>
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<center>Examples</center>
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<a href=example_java.html>Java example</a><br>
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<a href=java.html>Java detailed example</a><br>
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<a href=example_fcl.html>FCL example</a><br>
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<a href=fcl.html>FCL detailed example</a><br>
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<a href=example_parametric_optimization.html>Optimization example</a><br>
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<center> Documentation </center>
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<a href=faq.html>Faq</a><br>
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<a href=classes.html>Classes</a><br>
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<a href=membership.html>Membership functions</a><br>
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<a href="../doc/iec_1131_7_cd1.pdf">FCL (pdf)</a><br>
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<a href="about.html">About</a><br>
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</b>
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</div>
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<div class="lbot"></div>
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</div>
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<div class="entry">
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<center><h3> Optimization example </h3></center>
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Java code to optimize fuzzy sets' parameters and fuzzy rule's weights<p>
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<table border=0 bgcolor=#ccfccc><tr><td>
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<pre>
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//---
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// Load FIS (Fuzzy Inference System)
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//---
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FIS fis = FIS.load("fcl/qualify.fcl");
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RuleBlock ruleBlock = fis.getFunctionBlock().getRuleBlock();
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//---
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// Create a list of parameter to optimize
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//---
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ArrayList<Parameter> parameterList = new ArrayList<Parameter>();
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// Add variables.
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// Note: Fuzzy sets' parameters for these
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// variables will be optimized
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Parameter.parameterListAddVariable(parameterList
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, fis.getVariable("scoring"));
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Parameter.parameterListAddVariable(parameterList
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, fis.getVariable("credLimMul"));
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// Add every rule's weight
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for( Rule rule = ruleBlock )
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Parameter.parameterListAddRule(parameterList, rule);
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//---
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// Create an error function to be
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// optimzed (i.e. minimized)
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//---
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ErrorFunctionQualify errorFunction = new ErrorFunctionQualify();
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//---
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// Optimize (using 'Delta jump optimization')
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//---
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OptimizationDeltaJump optimizationDeltaJump =
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new OptimizationDeltaJump(ruleBlock
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, errorFunction, parameterList);
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// Number optimization of iterations
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optimizationDeltaJump.setMaxIterations(20);
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optimizationDeltaJump.optimize(true);
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</pre>
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</td></tr></table>
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<p>
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The error funcion (in this particular case, ErrorFunctionQualify) can be just any error function, the structure for the code should be like this:
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<table border=0 bgcolor=#ccfccc><tr><td>
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<pre>
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public class ErrorFunctionQualify extends ErrorFunction {
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public double evaluate(RuleBlock ruleBlock) {
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double error;
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// Caculate your desired error here...
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return error;
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}
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}
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</pre>
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</td></tr></table>
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<p style="font-size: 8pt" align=center><font color=#777777> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - </font></p>
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<center><b>Author: <a class="body" href="http://www.mcb.mcgill.ca/~pcingola/">Pablo Cingolani</a> (pcingola@users.sourceforge.net</a>)</b></center>
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</div>
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</div>
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</div>
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</div>
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<center>
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<font color=ffffff>
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Key words (for search engines): <br>
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Fuzzy logic <br>
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Fuzzy logic software <br>
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Fuzzy logic package <br>
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Fuzzy logic library <br>
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Fuzzy logic sourceforge sf.net <br>
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Open source <br>
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GNU <br>
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GPL LGPL <br>
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java <br>
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Windows Linux OSX <br>
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FCL <br>
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IEC 1131 <br>
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IEC 61131 <br>
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IEC 61131 part 7 <br>
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IEC 61131-7 <br>
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<a href="http://en.wikipedia.org/wiki/Fuzzy_logic">Fuzzy logic Wikipedia</a> <br>
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</font>
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</center>
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