org.opt4j.core.domination

Class ConstraintDomination

java.lang.Object

org.opt4j.core.domination.ConstraintDomination

All Implemented Interfaces:

DominationStrategy

public class ConstraintDomination
extends Object
implements DominationStrategy

This class implements DominationStrategy. The dominance relation is constraint-domination as described in K. Deb, A. Pratap, S. Agarwal, and T. Meyarivan, "A fast and elitist multiobjective genetic algorithm : Nsga-ii," Evolutionary Computation, IEEETransactions on, vol. 6, no. 2, pp. 182-197, August 2002.

It needs a ConstraintChecker that checks infeasibility and/or satisfaction constraints.

Author:

noorshams

See Also:

DominationStrategy, ConstraintDomination

Constructor Summary

Constructors

Constructor and Description
ConstraintDomination(ConstraintChecker checker, DominationStrategy feasibleStrategy)

Method Summary

Modifier and Type	Method and Description
boolean	dominates(Objectives o1, Objectives o2) Checks two Objectives for domination.
boolean	weaklyDominates(Objectives o1, Objectives o2) Checks two Objectives for weak domination.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstraintDomination

@Inject
public ConstraintDomination(ConstraintChecker checker,
                                    DominationStrategy feasibleStrategy)

Method Detail

dominates

public boolean dominates(Objectives o1,
                         Objectives o2)

Checks two Objectives for domination. The dominance relation is Constraint-Domination.

Specified by:

dominates in interface DominationStrategy

Parameters:

o1 - the objectives to check

o2 - the objectives to compare with

Returns:

true, if o1 dominates o2
false, otherwise

weaklyDominates

public boolean weaklyDominates(Objectives o1,
                               Objectives o2)

Checks two Objectives for weak domination. The dominance relation is Constraint-Domination.

Specified by:

weaklyDominates in interface DominationStrategy

Parameters:

o1 - the objectives to check

o2 - the objectives to compare with

Returns:

true, if o1 weakly dominates o2
false, otherwise