107 lines
3.3 KiB
Java
107 lines
3.3 KiB
Java
package javaeva.server.go.problems;
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import javaeva.server.go.individuals.AbstractEAIndividual;
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import javaeva.server.go.individuals.ESIndividualDoubleData;
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import javaeva.server.go.individuals.InterfaceDataTypeDouble;
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import javaeva.server.go.populations.Population;
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/**
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* Created by IntelliJ IDEA.
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* User: streiche
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* Date: 30.06.2005
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* Time: 14:59:33
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* To change this template use File | Settings | File Templates.
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*/
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public class F12Problem extends F1Problem implements java.io.Serializable {
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public F12Problem() {
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this.m_Template = new ESIndividualDoubleData();
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}
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public F12Problem(F12Problem b) {
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super(b);
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}
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/** This method returns a deep clone of the problem.
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* @return the clone
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*/
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public Object clone() {
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return (Object) new F12Problem(this);
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}
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/** This method inits a given population
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* @param population The populations that is to be inited
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*/
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public void initPopulation(Population population) {
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AbstractEAIndividual tmpIndy;
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// this.m_OverallBest = null;
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population.clear();
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((InterfaceDataTypeDouble)this.m_Template).setDoubleDataLength(this.m_ProblemDimension);
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double[][] range = new double[this.m_ProblemDimension][2];
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for (int i = 0; i < range.length; i++) {
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range[i][0] = -5.0;
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range[i][1] = 5.0;
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}
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((InterfaceDataTypeDouble)this.m_Template).SetDoubleRange(range);
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for (int i = 0; i < population.getPopulationSize(); i++) {
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tmpIndy = (AbstractEAIndividual)((AbstractEAIndividual)this.m_Template).clone();
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tmpIndy.init(this);
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population.add(tmpIndy);
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}
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// population init must be last
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// it set's fitcalls and generation to zero
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population.init();
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}
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/** Ths method allows you to evaluate a double[] to determine the fitness
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* @param x The n-dimensional input vector
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* @return The m-dimensional output vector.
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*/
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public double[] eval(double[] x) {
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double[] result = new double[1];
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double tmp = -5;
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result[0] = 0;
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for (int i = 1; i < x.length-1; i++) {
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tmp += Math.pow(x[i], 2);
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}
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result[0] = (Math.exp(-5*x[0]*x[0])+2*Math.exp(-5*Math.pow(1-x[0], 2)))*Math.exp(tmp);
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return result;
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}
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/** This method returns a string describing the optimization problem.
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* @return The description.
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*/
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public String getStringRepresentationForProblem() {
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String result = "";
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result += "F12 Galar:\n";
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result += "Parameters:\n";
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result += "Dimension : " + this.m_ProblemDimension +"\n";
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result += "Noise level : " + this.m_Noise + "\n";
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result += "Solution representation:\n";
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//result += this.m_Template.getSolutionRepresentationFor();
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return result;
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}
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/**********************************************************************************************************************
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* These are for GUI
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*/
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/** This method allows the CommonJavaObjectEditorPanel to read the
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* name to the current object.
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* @return The name.
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*/
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public String getName() {
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return "F12 Problem";
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}
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/** This method returns a global info string
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* @return description
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*/
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public String globalInfo() {
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return "Galar Function";
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}
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} |