jmetal.util.archive
Class SPEA2DensityArchive

java.lang.Object
  jmetal.core.SolutionSet
      jmetal.util.archive.Archive
          jmetal.util.archive.SPEA2DensityArchive

All Implemented Interfaces:

java.io.Serializable

public class SPEA2DensityArchive
extends Archive

This class implemens a bounded archive based on strength raw fitness (as defined in SPEA2).

See Also:

Serialized Form

Field Summary

Fields inherited from class jmetal.core.SolutionSet

solutionsList_

Constructor Summary

SPEA2DensityArchive(int maxSize)
Constructor.

Method Summary

boolean

add(Solution solution) Adds a Solution to the archive.

Methods inherited from class jmetal.core.SolutionSet

add, best, clear, get, getCapacity, getMaxSize, indexWorst, iterator, printFeasibleFUN, printFeasibleVAR, printObjectives, printObjectivesToFile, printVariablesToFile, remove, replace, setCapacity, size, sort, union, worst, writeObjectivesToMatrix

Methods inherited from class java.lang.Object

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

Constructor Detail

SPEA2DensityArchive

public SPEA2DensityArchive(int maxSize)

Constructor.

Parameters:

maxSize - The maximum size of the archive.

Method Detail

add

public boolean add(Solution solution)

Adds a Solution to the archive. If the Solution is dominated by any member of the archive then it is discarded. If the Solution dominates some members of the archive, these are removed. If the archive is full and the Solution has to be inserted, all the solutions are ordered by his strengthRawFitness value and the one having the worst value is removed.

Overrides:

add in class SolutionSet

Parameters:

solution - The Solution

Returns:

true if the Solution has been inserted, false otherwise.