examples.grid.mathProblemDistributed
Class SampleFitnessFunction

java.lang.Object
  org.jgap.gp.GPFitnessFunction
      examples.grid.mathProblemDistributed.SampleFitnessFunction

All Implemented Interfaces:

java.io.Serializable

public class SampleFitnessFunction
extends GPFitnessFunction

Fitness function for our example.

Since:

3.2

See Also:

Serialized Form

Field Summary

Fields inherited from class org.jgap.gp.GPFitnessFunction

MAX_FITNESS_VALUE, NO_FITNESS_VALUE

Constructor Summary

SampleFitnessFunction()

Method Summary

double	computeRawFitness(IGPProgram ind)
protected double	evaluate(IGPProgram a_subject) Determine the fitness of the given GPProgram instance.
void	init()

Methods inherited from class org.jgap.gp.GPFitnessFunction

getFitnessValue, getLastComputedFitnessValue, GPFitnessFunction

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SampleFitnessFunction

public SampleFitnessFunction()

Method Detail

init

public void init()

evaluate

protected double evaluate(IGPProgram a_subject)

Description copied from class: GPFitnessFunction

Determine the fitness of the given GPProgram instance. The higher the return value, the more fit the instance. This method should always return the same fitness value for two equivalent GPProgram instances.

Specified by:

evaluate in class GPFitnessFunction

Parameters:

a_subject - the GPProgram instance to evaluate

Returns:

positive double reflecting the fitness rating of the given GPProgram. Note that if a non-positive double is returned, a RuntimeException should be generated

computeRawFitness

public double computeRawFitness(IGPProgram ind)