Package org.opt4j.optimizers.ea.aeseh

Class EpsilonMappingAdditive

java.lang.Object

org.opt4j.optimizers.ea.aeseh.EpsilonMappingAdditive

All Implemented Interfaces:

EpsilonMapping

public class EpsilonMappingAdditive
extends Object
implements EpsilonMapping

The EpsilonMappingAdditive implements the evenly spaced adaptive ε function.

Constructor Summary

Constructors

Constructor	Description
EpsilonMappingAdditive()

Method Summary

Modifier and Type	Method	Description
Map<Objective,Double>	findObjectiveAmplitudes(Set<Individual> individuals)	Creates a map mapping the Objectives to their amplitudes (difference between maximal and minimal value).
Objectives	mapObjectives(Objectives original, double epsilon, Map<Objective,Double> objectiveAmplitudes)	Applies ε mapping by enhancing all of the given Objectives by the ε fraction of the objective amplitude.

Methods inherited from class java.lang.Object

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

Constructor Details

EpsilonMappingAdditive

public EpsilonMappingAdditive()

Method Details

mapObjectives

public Objectives mapObjectives(Objectives original,
 double epsilon,
 Map<Objective,Double> objectiveAmplitudes)

Applies ε mapping by enhancing all of the given Objectives by the ε fraction of the objective amplitude.

Specified by:

mapObjectives in interface EpsilonMapping

Parameters:

original - the Objectives that are enhanced by this method

epsilon - the fraction used for the enhancement

objectiveAmplitudes - the map mapping its objective onto its amplitude

Returns:

enhanced Objectives where each Objective is improved by the ε fraction of the objective's amplitude

findObjectiveAmplitudes

public Map<Objective,Double> findObjectiveAmplitudes(Set<Individual> individuals)

Description copied from interface: EpsilonMapping

Creates a map mapping the Objectives to their amplitudes (difference between maximal and minimal value). These extreme values are used during ε mapping to scale the delta according to the objective values of the Individual group under consideration.

Specified by:

findObjectiveAmplitudes in interface EpsilonMapping

Parameters:

individuals -

Returns:

map mapping each Objective onto its amplitude