org.jgap.gp

Class GPFitnessFunction

java.lang.Object

org.jgap.gp.GPFitnessFunction

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

FormulaFitnessFunction, SymbolicRegression.FormulaFitnessFunction

public abstract class GPFitnessFunction
extends java.lang.Object
implements java.io.Serializable

Fitness function for GP-Programs.

Since:

3.0

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static double	MAX_FITNESS_VALUE
static double	NO_FITNESS_VALUE

Constructor Summary

Constructors

Constructor and Description
GPFitnessFunction()

Method Summary

Modifier and Type	Method and Description
double	getFitnessValue(IGPProgram a_program) Retrieves the fitness value of the given GPProgram.
double	getLastComputedFitnessValue()
void	GPFitnessFunction() Default constructor.

Methods inherited from class java.lang.Object

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

Field Detail

NO_FITNESS_VALUE

public static final double NO_FITNESS_VALUE

See Also:

Constant Field Values

MAX_FITNESS_VALUE

public static final double MAX_FITNESS_VALUE

See Also:

Constant Field Values

Constructor Detail

GPFitnessFunction

public GPFitnessFunction()

Method Detail

GPFitnessFunction

public void GPFitnessFunction()

Default constructor.

Since:

3.3.1

getFitnessValue

public final double getFitnessValue(IGPProgram a_program)

Retrieves the fitness value of the given GPProgram. The fitness value will be a positive double.

Parameters:

a_program - the GPProgram for which to compute and return the fitness value

Returns:

the fitness value of the given GPProgram

Since:

3.0

getLastComputedFitnessValue

public double getLastComputedFitnessValue()

Returns:

the last fitness value computed via method getFitnessValue( Chromosome), or NO_FITNES_VALUE if the former method has not been called yet

Since:

2.4