RandomFitnessFunction


1   /*
2    * This file is part of JGAP.
3    *
4    * JGAP offers a dual license model containing the LGPL as well as the MPL.
5    *
6    * For licencing information please see the file license.txt included with JGAP
7    * or have a look at the top of class org.jgap.Chromosome which representatively
8    * includes the JGAP license policy applicable for any file delivered with JGAP.
9    */
10  package org.jgap.impl;
11  
12  import org.jgap.*;
13  import java.util.Random  ;
14  
15  /**
16   * Fitness function returning random values
17   * Only for testing purposes
18   *
19   * @author Klaus Meffert
20   * @since 1.1
21   */
22  public class RandomFitnessFunction
23      extends FitnessFunction {
24  
25    /** String containing the CVS revision. Read out via reflection!*/
26    private final static String   CVS_REVISION = "$Revision: 1.6 $";
27  
28    private Random   m_rand;
29  
30    public RandomFitnessFunction() {
31      m_rand = new Random  ();
32    }
33  
34    /**
35     * @param a_chrom ignored: the Chromosome to evaluate
36     * @return randomized fitness value
37     * @since 2.0 (until 1.1: return type int)
38     */
39    public double evaluate(IChromosome a_chrom) {
40      double result;
41      result = m_rand.nextDouble();
42      return result;
43    }
44  }
45

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