org.generation5.bio
Class EvolveStandard

java.lang.Object
  org.generation5.bio.EvolveStandard

All Implemented Interfaces:

java.lang.Comparable, Evolvable

Direct Known Subclasses:

EvoDiophantine, EvoHelloWorld

public abstract class EvolveStandard

extends java.lang.Object

implements Evolvable

EvolveStandard implements the Evolvable interface and provides default behaviour for fitness values, as well as providing the necessary Comparable implementation for sorting in both ascending and descending order.

Field Summary

protected double	fitnessValue The fitness value.
protected boolean	minimizeFitness Whether the genetic algorithm minimize or maximize the fitness.
protected static java.util.Random	random An instance of java.util.Random, useful for generating a range of random numbers.

Constructor Summary

EvolveStandard()
Creates a new instance of EvolveStandard

Method Summary

abstract void	calculateFitness() The fitness function.
int	compareTo(java.lang.Object o) Compares two EvolveStandard objects and sorts by fitness.
double	getFitness() Retrieve the fitness of this instance.
abstract Evolvable	mate(Evolvable partner) Abstract function to mate with another object to produce an offspring for the next generation.
abstract void	mutate() Abstract function to mutate the object.
abstract void	randomInitialize() An abstract function to randomize the object's initial settings.

Methods inherited from class java.lang.Object

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

Field Detail

fitnessValue

protected double fitnessValue

The fitness value.

minimizeFitness

protected boolean minimizeFitness

Whether the genetic algorithm minimize or maximize the fitness. This is implemented through the sorting function.

See Also:

compareTo(Object)

random

protected static java.util.Random random

An instance of java.util.Random, useful for generating a range of random numbers.

Constructor Detail

EvolveStandard

public EvolveStandard()

Creates a new instance of EvolveStandard

Method Detail

calculateFitness

public abstract void calculateFitness()

The fitness function. Should store the fitness to fitnessValue.

Specified by:

calculateFitness in interface Evolvable

compareTo

public int compareTo(java.lang.Object o)

Compares two EvolveStandard objects and sorts by fitness. By default, values are sorted in ascending order.

Specified by:

compareTo in interface java.lang.Comparable

Parameters:

o - the object to compare to.

Returns:

-1, 0 or 1 according to fitness levels.

getFitness

public double getFitness()

Retrieve the fitness of this instance.

Specified by:

getFitness in interface Evolvable

Returns:

the fitness value of this instance.

mate

public abstract Evolvable mate(Evolvable partner)

Abstract function to mate with another object to produce an offspring for the next generation.

Specified by:

mate in interface Evolvable

Parameters:

partner - the partner object.

Returns:

a child object.

mutate

public abstract void mutate()

Abstract function to mutate the object.

Specified by:

mutate in interface Evolvable

randomInitialize

public abstract void randomInitialize()

An abstract function to randomize the object's initial settings.

Specified by:

randomInitialize in interface Evolvable