Package net.bmahe.genetics4j.moo.spea2.replacement

Class SPEA2ReplacementStrategyImplementor<T extends Comparable<T>>

java.lang.Object

net.bmahe.genetics4j.moo.spea2.replacement.SPEA2ReplacementStrategyImplementor<T>

All Implemented Interfaces:

ReplacementStrategyImplementor<T>

public class SPEA2ReplacementStrategyImplementor<T extends Comparable<T>>
extends Object
implements ReplacementStrategyImplementor<T>

Field Summary

Fields

Modifier and Type	Field	Description
static final org.apache.logging.log4j.Logger	logger
private final SPEA2Replacement<T>	spea2Replacement

Constructor Summary

Constructors

Constructor	Description
SPEA2ReplacementStrategyImplementor(SPEA2Replacement<T> _spea2Replacement)

Method Summary

Modifier and Type	Method	Description
protected List<Integer>	computeAdditionalIndividuals(Set<Integer> selectedIndex, double[] rawFitness, Population<T> population, int numIndividuals)
protected double[]	computeDensity(List<List<org.apache.commons.lang3.tuple.Pair<Integer,Double>>> distances, int k, Population<T> population)
protected double[]	computeFinalFitness(double[] rawFitness, double[] density, Population<T> population)
protected double[][]	computeObjectiveDistances(BiFunction<T,T,Double> distance, Population<T> population)
protected double[]	computeRawFitness(Comparator<T> dominance, double[] strengths, Population<T> population)
protected List<List<org.apache.commons.lang3.tuple.Pair<Integer,Double>>>	computeSortedDistances(double[][] distanceObjectives, Population<T> population)
protected double[]	computeStrength(Comparator<T> dominance, Population<T> population)
protected Set<Integer>	environmentalSelection(List<List<org.apache.commons.lang3.tuple.Pair<Integer,Double>>> distances, double[] rawFitness, double[] finalFitness, Population<T> population, int numIndividuals)
Population<T>	select(AbstractEAConfiguration<T> eaConfiguration, int numIndividuals, List<Genotype> population, List<T> populationScores, List<Genotype> offsprings, List<T> offspringScores)
protected int	skipNull(List<org.apache.commons.lang3.tuple.Pair<Integer,Double>> distances, int i)
protected void	truncatePopulation(List<List<org.apache.commons.lang3.tuple.Pair<Integer,Double>>> distances, Population<T> population, int numIndividuals, Set<Integer> selectedIndex)

Methods inherited from class java.lang.Object

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

Field Details

logger

public static final org.apache.logging.log4j.Logger logger

spea2Replacement

private final SPEA2Replacement<T extends Comparable<T>> spea2Replacement

Constructor Details

SPEA2ReplacementStrategyImplementor

public SPEA2ReplacementStrategyImplementor(SPEA2Replacement<T> _spea2Replacement)

Method Details

computeStrength

protected double[] computeStrength(Comparator<T> dominance,
 Population<T> population)

computeObjectiveDistances

protected double[][] computeObjectiveDistances(BiFunction<T,T,Double> distance,
 Population<T> population)

computeRawFitness

protected double[] computeRawFitness(Comparator<T> dominance,
 double[] strengths,
 Population<T> population)

computeSortedDistances

protected List<List<org.apache.commons.lang3.tuple.Pair<Integer,Double>>> computeSortedDistances(double[][] distanceObjectives,
 Population<T> population)

computeDensity

protected double[] computeDensity(List<List<org.apache.commons.lang3.tuple.Pair<Integer,Double>>> distances,
 int k,
 Population<T> population)

computeFinalFitness

protected double[] computeFinalFitness(double[] rawFitness,
 double[] density,
 Population<T> population)

skipNull

protected int skipNull(List<org.apache.commons.lang3.tuple.Pair<Integer,Double>> distances,
 int i)

computeAdditionalIndividuals

protected List<Integer> computeAdditionalIndividuals(Set<Integer> selectedIndex,
 double[] rawFitness,
 Population<T> population,
 int numIndividuals)

truncatePopulation

protected void truncatePopulation(List<List<org.apache.commons.lang3.tuple.Pair<Integer,Double>>> distances,
 Population<T> population,
 int numIndividuals,
 Set<Integer> selectedIndex)

environmentalSelection

protected Set<Integer> environmentalSelection(List<List<org.apache.commons.lang3.tuple.Pair<Integer,Double>>> distances,
 double[] rawFitness,
 double[] finalFitness,
 Population<T> population,
 int numIndividuals)

select

public Population<T> select(AbstractEAConfiguration<T> eaConfiguration,
 int numIndividuals,
 List<Genotype> population,
 List<T> populationScores,
 List<Genotype> offsprings,
 List<T> offspringScores)

Specified by:

select in interface ReplacementStrategyImplementor<T extends Comparable<T>>