org.uma.jmetal.algorithm.multiobjective.spea2

Class SPEA2<S extends Solution<?>>

java.lang.Object

org.uma.jmetal.algorithm.impl.AbstractEvolutionaryAlgorithm<S,Result>

org.uma.jmetal.algorithm.impl.AbstractGeneticAlgorithm<S,List<S>>

org.uma.jmetal.algorithm.multiobjective.spea2.SPEA2<S>

All Implemented Interfaces:

Serializable, Runnable, Algorithm<List<S>>

public class SPEA2<S extends Solution<?>>
extends AbstractGeneticAlgorithm<S,List<S>>

Author:

Juanjo

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected List<S>	archive
protected SolutionListEvaluator<S>	evaluator
protected int	iterations
protected int	maxIterations
protected int	populationSize
protected Problem<S>	problem

Fields inherited from class org.uma.jmetal.algorithm.impl.AbstractGeneticAlgorithm

crossoverOperator, mutationOperator, selectionOperator

Constructor Summary

Constructors

Constructor and Description
SPEA2(Problem<S> problem, int maxIterations, int populationSize, CrossoverOperator<S> crossoverOperator, MutationOperator<S> mutationOperator, SelectionOperator<List<S>,S> selectionOperator, SolutionListEvaluator<S> evaluator)

Method Summary

Modifier and Type	Method and Description
protected List<S>	createInitialPopulation()
protected List<S>	evaluatePopulation(List<S> population)
List<S>	getResult()
protected void	initProgress()
protected boolean	isStoppingConditionReached()
protected List<S>	replacement(List<S> population, List<S> offspringPopulation)
protected List<S>	reproduction(List<S> population)
protected List<S>	selection(List<S> population)
protected void	updateProgress()

Methods inherited from class org.uma.jmetal.algorithm.impl.AbstractEvolutionaryAlgorithm

getPopulation, run, setPopulation

Methods inherited from class java.lang.Object

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

Field Detail

maxIterations

protected final int maxIterations

populationSize

protected final int populationSize

problem

protected final Problem<S extends Solution<?>> problem

evaluator

protected final SolutionListEvaluator<S extends Solution<?>> evaluator

iterations

protected int iterations

archive

protected List<S extends Solution<?>> archive

Constructor Detail

SPEA2

public SPEA2(Problem<S> problem,
             int maxIterations,
             int populationSize,
             CrossoverOperator<S> crossoverOperator,
             MutationOperator<S> mutationOperator,
             SelectionOperator<List<S>,S> selectionOperator,
             SolutionListEvaluator<S> evaluator)

Method Detail

initProgress

protected void initProgress()

Specified by:

initProgress in class AbstractEvolutionaryAlgorithm<S extends Solution<?>,List<S extends Solution<?>>>

updateProgress

protected void updateProgress()

Specified by:

updateProgress in class AbstractEvolutionaryAlgorithm<S extends Solution<?>,List<S extends Solution<?>>>

isStoppingConditionReached

protected boolean isStoppingConditionReached()

Specified by:

isStoppingConditionReached in class AbstractEvolutionaryAlgorithm<S extends Solution<?>,List<S extends Solution<?>>>

createInitialPopulation

protected List<S> createInitialPopulation()

Specified by:

createInitialPopulation in class AbstractEvolutionaryAlgorithm<S extends Solution<?>,List<S extends Solution<?>>>

evaluatePopulation

protected List<S> evaluatePopulation(List<S> population)

Specified by:

evaluatePopulation in class AbstractEvolutionaryAlgorithm<S extends Solution<?>,List<S extends Solution<?>>>

selection

protected List<S> selection(List<S> population)

Specified by:

selection in class AbstractEvolutionaryAlgorithm<S extends Solution<?>,List<S extends Solution<?>>>

reproduction

protected List<S> reproduction(List<S> population)

Specified by:

reproduction in class AbstractEvolutionaryAlgorithm<S extends Solution<?>,List<S extends Solution<?>>>

replacement

protected List<S> replacement(List<S> population,
                              List<S> offspringPopulation)

Specified by:

replacement in class AbstractEvolutionaryAlgorithm<S extends Solution<?>,List<S extends Solution<?>>>

getResult

public List<S> getResult()

Specified by:

getResult in interface Algorithm<List<S extends Solution<?>>>

Specified by:

getResult in class AbstractEvolutionaryAlgorithm<S extends Solution<?>,List<S extends Solution<?>>>