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Java > Open Source Codes > org > jgap > gp > IGPFitnessEvaluator


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.gp;
11
12 /**
13  * Interface for a fitness evaluator used in a Genotype to determine how to
14  * interpret the fitness value. The fitness value can either be interpreted
15  * straight forward as a fitness indicator (the higher the better). Or it could
16  * be seen as a defect rate (the lower the better).
17  *
18  * @author Klaus Meffert
19  * @since 3.0
20  */
21 public interface IGPFitnessEvaluator
22     extends java.io.Serializable JavaDoc {
23   /** String containing the CVS revision. Read out via reflection!*/
24   final static String JavaDoc CVS_REVISION = "$Revision: 1.5 $";
25
26   /**
27    * Compares the first given fitness value with the second and returns true
28    * if the first one is fitter than the second one. Otherwise returns false
29    * @param a_fitness_value1 first fitness value
30    * @param a_fitness_value2 second fitness value
31    * @return true: first fitness value fitter than second
32    *
33    * @author Klaus Meffert
34    * @since 2.0 (until 1.1: input types int)
35    */
36   boolean isFitter(double a_fitness_value1, double a_fitness_value2);
37
38   boolean isFitter(IGPProgram a_prog1, IGPProgram a_prog2);
39 }
40
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