jeco.kernel.algorithm.moga
Class SPEA2

java.lang.Object
  jeco.kernel.algorithm.Algorithm
      jeco.kernel.algorithm.moga.SPEA2

public class SPEA2
extends Algorithm

Input parameters: - MAX_GENERATIONS - MAX_POPULATION_SIZE Operators: - CROSSOVER: Crossover operator - MUTATION: Mutation operator - SELECTION: Selection operator

Author:

José L. Risco-Martín

Field Summary

protected Solutions	archive
protected CrossoverOperator	crossoverOperator
protected int	currentGeneration
protected java.util.Comparator<Solution>	dominance
protected int	K
protected int	maxGenerations
protected int	maxPopulationSize
protected MutationOperator	mutationOperator
protected Solutions	population
protected SelectionOperator	selectionOperator

Fields inherited from class jeco.kernel.algorithm.Algorithm

name, problem

Constructor Summary

SPEA2(Problem problem, int maxPopulationSize, int maxGenerations, MutationOperator mutationOperator, CrossoverOperator crossoverOperator, SelectionOperator selectionOperator)

Method Summary

void	assignFitness(Solutions solutions)
Solutions	execute()
void	expand(Solutions pop, Solutions all, int nElems)
void	initialize()
Solutions	reduce(Solutions pop, int maxSize)
Solutions	reduceByFitness(Solutions pop)
void	setCrossoverOperator(CrossoverOperator crossoverOperator)
void	setMaxGenerations(int maxGenerations)
void	setMaxPopulationSize(int maxPopulationSize)
void	setMutationOperator(MutationOperator mutationOperator)
void	setSelectionOperator(SelectionOperator selectionOperator)
void	step()

Methods inherited from class jeco.kernel.algorithm.Algorithm

getName, getProblem, setLevel, setProblem

Methods inherited from class java.lang.Object

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

Field Detail

maxGenerations

protected int maxGenerations

maxPopulationSize

protected int maxPopulationSize

dominance

protected java.util.Comparator<Solution> dominance

currentGeneration

protected int currentGeneration

population

protected Solutions population

archive

protected Solutions archive

mutationOperator

protected MutationOperator mutationOperator

crossoverOperator

protected CrossoverOperator crossoverOperator

selectionOperator

protected SelectionOperator selectionOperator

K

protected int K

Constructor Detail

SPEA2

public SPEA2(Problem problem,
             int maxPopulationSize,
             int maxGenerations,
             MutationOperator mutationOperator,
             CrossoverOperator crossoverOperator,
             SelectionOperator selectionOperator)

Method Detail

initialize

public void initialize()

Specified by:

initialize in class Algorithm

execute

public Solutions execute()

Specified by:

execute in class Algorithm

step

public void step()

Specified by:

step in class Algorithm

assignFitness

public void assignFitness(Solutions solutions)

reduceByFitness

public Solutions reduceByFitness(Solutions pop)

expand

public void expand(Solutions pop,
                   Solutions all,
                   int nElems)

reduce

public Solutions reduce(Solutions pop,
                        int maxSize)

setMutationOperator

public void setMutationOperator(MutationOperator mutationOperator)

setCrossoverOperator

public void setCrossoverOperator(CrossoverOperator crossoverOperator)

setSelectionOperator

public void setSelectionOperator(SelectionOperator selectionOperator)

setMaxGenerations

public void setMaxGenerations(int maxGenerations)

setMaxPopulationSize

public void setMaxPopulationSize(int maxPopulationSize)