Package org.opt4j.optimizer.ea

Provides the classes for a (Multi-Objective) Evolutionary Algorithm (MOEA).

Interface Summary

Interface	Description
Coupler	The Coupler determines couples that are used to create the offspring for a given set of possible parents.
CrossoverRate	The CrossoverRate is an interface for the crossover rate which is the probability of two individuals undergoing crossover.
FrontDensityIndicator	The FrontDensityIndicator is an interface for the determination of density values of a front of Individuals.
Mating	The Mating interface is used to create offspring from a given set of parents.
Selector	The interface Selector is used to select a certain subset of Individuals from a Population by respecting certain metrics like their fitness.

Class Summary

Class	Description
AlternativeNsga2	Deprecated. Previous implementation as of Opt4J version 2.2.
BasicMatingModule	The BasicMatingModule is the basic property module for the Mating and Coupler.
ConstantCrossoverRate	The ConstantCrossoverRate represents a crossover rate that is constant during the whole optimization.
CouplerDefault	The CouplerDefault uses the pairs based on their index in the list: p0+p1,p2+p3,etc..
CouplerRandom	The CouplerRandom uses the set of parents and creates couples randomly from this set.
CouplerUnique	The CouplerUnique uses the set of parents and creates couples randomly from this set.
Crowding	The Crowding calculates the crowding distance of Individuals as used for instance in the the Nsga2 algorithm.
ElitismSelector	The ElitismSelector is a single objective elitism select.
ElitismSelectorModule	The ElitismSelectorModule is the module that binds the ElitismSelector.
EvolutionaryAlgorithm	The EvolutionaryAlgorithm is an implementation of an Evolutionary Algorithm based on the operators Crossover and Mutate.
EvolutionaryAlgorithmModule	The EvolutionaryAlgorithmModule configures the EvolutionaryAlgorithm.
Hypervolume	The Hypervolume is a FrontDensityIndicator based on determination of the hypervolume contribution.
MatingCrossoverMutate	The MatingCrossoverMutate creates offspring from a given set of parents by using Crossover and Mutate.
MatingModule	Abstract module class for the Mating and Couplers.
Normalizer	The Normalizer can be used to normalize Objectives.
NormalizerModule	Adds the Normalizer to the IndividualStateListeners.
Nsga2	The Nsga2 Selector.
Nsga2Module	Module for the Nsga2 Selector.
Pair<A>	The Pair groups two objects of the same type in a given order.
ScalingNsga2	Latest version of NSGA-II with the dimensions scaled on the basis of the individual ranges when calculating the crowding distance as described in K.
ScalingNsga2Module	Module for the ScalingNsga2 Selector.
SelectorDefault	The default selector is the Nsga2 selector with the tournament value 0.
SelectorModule	Abstract module class for the Selector.
SMSModule	Module for the S-Metric Selection (Selector) based on the Hypervolume contribution.
Spea2	The Spea2-Selector is a Java implementation of the SPEA2-MOEA.
Spea2Module	The Spea2Module configures the Spea2 selector.

Enum Summary

Enum	Description
BasicMatingModule.CouplerType	The BasicMatingModule.CouplerType determines the coupler operator to use.
EvolutionaryAlgorithmModule.CrossoverRateType	The EvolutionaryAlgorithmModule.CrossoverRateType allows to choose between different types of crossover rates.