org.uma.jmetal.operator.impl.selection

Class RankingAndCrowdingSelection<S extends Solution<?>>

java.lang.Object

org.uma.jmetal.operator.impl.selection.RankingAndCrowdingSelection<S>

All Implemented Interfaces:

Serializable, Operator<List<S>,List<S>>, SelectionOperator<List<S>,List<S>>

public class RankingAndCrowdingSelection<S extends Solution<?>>
extends Object
implements SelectionOperator<List<S>,List<S>>

This class implements a selection for selecting a number of solutions from a solution list. The solutions are taken by mean of its ranking and crowding distance values.

Author:

Antonio J. Nebro, Juan J. Durillo

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RankingAndCrowdingSelection(int solutionsToSelect) Constructor

Method Summary

Modifier and Type	Method and Description
protected void	addLastRankedSolutionsToPopulation(Ranking<S> ranking, int rank, List<S> population)
protected void	addRankedSolutionsToPopulation(Ranking<S> ranking, int rank, List<S> population)
protected List<S>	crowdingDistanceSelection(Ranking<S> ranking)
List<S>	execute(List<S> solutionList) Execute() method
int	getNumberOfSolutionsToSelect()
protected boolean	subfrontFillsIntoThePopulation(Ranking<S> ranking, int rank, List<S> population)

Methods inherited from class java.lang.Object

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

Constructor Detail

RankingAndCrowdingSelection

public RankingAndCrowdingSelection(int solutionsToSelect)

Constructor

Method Detail

getNumberOfSolutionsToSelect

public int getNumberOfSolutionsToSelect()

execute

public List<S> execute(List<S> solutionList)
                throws JMetalException

Execute() method

Specified by:

execute in interface Operator<List<S extends Solution<?>>,List<S extends Solution<?>>>

Parameters:

solutionList - The data to process

Throws:

JMetalException

crowdingDistanceSelection

protected List<S> crowdingDistanceSelection(Ranking<S> ranking)

subfrontFillsIntoThePopulation

protected boolean subfrontFillsIntoThePopulation(Ranking<S> ranking,
                                                 int rank,
                                                 List<S> population)

addRankedSolutionsToPopulation

protected void addRankedSolutionsToPopulation(Ranking<S> ranking,
                                              int rank,
                                              List<S> population)

addLastRankedSolutionsToPopulation

protected void addLastRankedSolutionsToPopulation(Ranking<S> ranking,
                                                  int rank,
                                                  List<S> population)