org.uma.jmetal.operator.impl.localsearch

Class ArchiveMutationLocalSearch<S extends Solution<?>>

java.lang.Object

org.uma.jmetal.operator.impl.localsearch.ArchiveMutationLocalSearch<S>

All Implemented Interfaces:

LocalSearchOperator<S>, Operator<S,S>

public class ArchiveMutationLocalSearch<S extends Solution<?>>
extends Object
implements LocalSearchOperator<S>

This class implements a local search operator based in the use of a mutation operator. An archive is used to store the non-dominated solutions found during the search.

Author:

Antonio J. Nebro

Constructor Summary

Constructors

Constructor and Description
ArchiveMutationLocalSearch(int improvementRounds, MutationOperator<S> mutationOperator, Archive<S> archive, Problem<S> problem) Constructor.

Method Summary

Modifier and Type	Method and Description
S	execute(S solution) Executes the local search.
int	getEvaluations() Returns the number of evaluations
int	getNumberOfImprovements()
int	getNumberOfNonComparableSolutions()

Methods inherited from class java.lang.Object

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

Constructor Detail

ArchiveMutationLocalSearch

public ArchiveMutationLocalSearch(int improvementRounds,
                                  MutationOperator<S> mutationOperator,
                                  Archive<S> archive,
                                  Problem<S> problem)

Constructor. Creates a new local search object.

Parameters:

improvementRounds - number of iterations

mutationOperator - mutation operator

archive - archive to store non-dominated solution

problem - problem to resolve

Method Detail

execute

public S execute(S solution)

Executes the local search.

Specified by:

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

Parameters:

solution - The solution to improve

Returns:

The improved solution

getEvaluations

public int getEvaluations()

Returns the number of evaluations

Specified by:

getEvaluations in interface LocalSearchOperator<S extends Solution<?>>

getNumberOfImprovements

public int getNumberOfImprovements()

Specified by:

getNumberOfImprovements in interface LocalSearchOperator<S extends Solution<?>>

getNumberOfNonComparableSolutions

public int getNumberOfNonComparableSolutions()

Specified by:

getNumberOfNonComparableSolutions in interface LocalSearchOperator<S extends Solution<?>>