org.vizzini.ai.geneticalgorithm
Class AbstractPopulation

java.lang.Object
  org.vizzini.ai.geneticalgorithm.AbstractPopulation

All Implemented Interfaces:

IPopulation

Direct Known Subclasses:

DefaultPopulation

public abstract class AbstractPopulation
extends Object
implements IPopulation

Provides base functionality for a collection which holds IChromosome s.

Since:

v0.3

Version:

v0.3

Author:

Jeffrey M. Thompson

Constructor Summary

AbstractPopulation(int capacity)
Construct this object using the given parameter.

Method Summary

void	add(IChromosome chromosome) Add the given chromosome.
void	addAll(IPopulation population) Add all chromosomes from the given population to this.
int	capacity() Return the capacity of the population.
void	clearFitnesses() Clear the fitnesses of all members of the population.
boolean	contains(IChromosome chromosome) Return true if the given chromosome is a duplicate of one already in the population.
boolean	contains(IChromosome chromosome, int start, int end) Return true if the given chromosome is a duplicate of one already in the given range of the population.
IChromosome	first() Return the first chromosome.
IChromosome	get(int i) Return the chromosome at the given index.
double	getAverageFitness() Return the average fitness of all the chromosomes.
int	getMaxFitness()
int	getMinFitness()
int	getSumFitness() Return the sum of the chromosome's fitnesses.
int	indexOf(IChromosome chromosome) Return the index of the given chromosome.
boolean	isEmpty() Return true if this is empty.
void	resetAverageFitness() Reset the average fitness.
void	setFitnesses(int fitness) Set the fitnesses of all members of the population to the given value.
void	shuffle() Shuffle the chromosomes.
int	size() Return the current size of the population.
void	sort() Sort the chromosomes.
String	toString() Return a string representation of this object.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractPopulation

public AbstractPopulation(int capacity)

Construct this object using the given parameter.

Parameters:

capacity - Capacity of this population.

Since:

v0.3

Method Detail

add

public void add(IChromosome chromosome)

Add the given chromosome.

Specified by:

add in interface IPopulation

Parameters:

chromosome - Chromosome.

Since:

v0.3

addAll

public void addAll(IPopulation population)

Add all chromosomes from the given population to this.

Specified by:

addAll in interface IPopulation

Since:

v0.3

capacity

public int capacity()

Return the capacity of the population.

Specified by:

capacity in interface IPopulation

Since:

v0.3

clearFitnesses

public void clearFitnesses()

Clear the fitnesses of all members of the population.

Specified by:

clearFitnesses in interface IPopulation

Since:

v0.3

contains

public boolean contains(IChromosome chromosome)

Return true if the given chromosome is a duplicate of one already in the population.

Specified by:

contains in interface IPopulation

Parameters:

chromosome - Chromosome for which to search.

Since:

v0.3

contains

public boolean contains(IChromosome chromosome,
                        int start,
                        int end)

Return true if the given chromosome is a duplicate of one already in the given range of the population.

Specified by:

contains in interface IPopulation

Parameters:

chromosome - Chromosome for which to search.

start - Start index.

end - End index plus one.

Since:

v0.3

first

public IChromosome first()

Return the first chromosome.

Specified by:

first in interface IPopulation

Since:

v0.3

get

public IChromosome get(int i)

Return the chromosome at the given index.

Specified by:

get in interface IPopulation

Parameters:

i - Chromosome index.

Since:

v0.3

getAverageFitness

public double getAverageFitness()

Return the average fitness of all the chromosomes.

Specified by:

getAverageFitness in interface IPopulation

Since:

v0.3

getMaxFitness

public int getMaxFitness()

Specified by:

getMaxFitness in interface IPopulation

Returns:

Return maxFitness.

Since:

v0.3

getMinFitness

public int getMinFitness()

Specified by:

getMinFitness in interface IPopulation

Returns:

Return minFitness.

Since:

v0.3

getSumFitness

public int getSumFitness()

Return the sum of the chromosome's fitnesses.

Specified by:

getSumFitness in interface IPopulation

Since:

v0.3

indexOf

public int indexOf(IChromosome chromosome)

Return the index of the given chromosome.

Specified by:

indexOf in interface IPopulation

Since:

v0.3

isEmpty

public boolean isEmpty()

Return true if this is empty.

Specified by:

isEmpty in interface IPopulation

Since:

v0.3

resetAverageFitness

public void resetAverageFitness()

Reset the average fitness.

Specified by:

resetAverageFitness in interface IPopulation

Since:

v0.3

setFitnesses

public void setFitnesses(int fitness)

Set the fitnesses of all members of the population to the given value.

Specified by:

setFitnesses in interface IPopulation

Since:

v0.3

shuffle

public void shuffle()

Shuffle the chromosomes.

Specified by:

shuffle in interface IPopulation

Since:

v0.3

size

public int size()

Return the current size of the population.

Specified by:

size in interface IPopulation

Since:

v0.3

sort

public void sort()

Sort the chromosomes.

Specified by:

sort in interface IPopulation

Since:

v0.3

toString

public String toString()

Return a string representation of this object.

Specified by:

toString in interface IPopulation

Overrides:

toString in class Object

Since:

v0.3