Package net.bmahe.genetics4j.core

Class EASystem<T extends Comparable<T>>

java.lang.Object

net.bmahe.genetics4j.core.EASystem<T>

Type Parameters:

T -

public class EASystem<T extends Comparable<T>>
extends Object

Main class used to manage and execute the evolution process

Field Summary

Fields

Modifier and Type	Field	Description
private final List<ChromosomeCombinator<T>>	chromosomeCombinators
private final ChromosomeFactoryProvider	chromosomeFactoryProvider
private final AbstractEAConfiguration<T>	eaConfiguration
private final AbstractEAExecutionContext<T>	eaExecutionContext
private final FitnessEvaluator<T>	fitnessEvaluator
private final GenotypeGenerator<T>	genotypeGenerator
static final org.apache.logging.log4j.Logger	logger
private final List<Mutator>	mutators
private final double	offspringRatio
private Selector<T>	parentSelector
private final int	populationSize
private final ReplacementStrategyImplementor<T>	replacementStrategyImplementor

Constructor Summary

Constructors

Constructor	Description
EASystem(AbstractEAConfiguration<T> _eaConfiguration, long _populationSize, List<ChromosomeCombinator<T>> _chromosomeCombinators, double _offspringRatio, Selector<T> _parentSelectionPolicyHandler, List<Mutator> _mutators, ReplacementStrategyImplementor<T> _replacementStrategyImplementor, AbstractEAExecutionContext<T> _eaExecutionContext, FitnessEvaluator<T> _fitnessEvaluator)

Method Summary

Modifier and Type	Method	Description
private List<Genotype>	combineParents(Population<T> parents, GenotypeCombinator genotypeCombinator)
private List<Genotype>	createBasicOffsprings(Population<T> population, int offspringsNeeded)	Create offsprings without mutation
List<Genotype>	createOffsprings(Population<T> population, int offspringsNeeded)
private List<T>	evaluate(long generation, List<Genotype> population)
List<T>	evaluateOnce(long generation, List<Genotype> genotypes)
EvolutionResult<T>	evolve()	Triggers the evolutionary process
AbstractEAConfiguration<T>	getEAConfiguration()
long	getPopulationSize()
private List<Genotype>	initializePopulation()
private List<Genotype>	mutateGenotypes(List<Genotype> genotypes)

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

genotypeGenerator

private final GenotypeGenerator<T extends Comparable<T>> genotypeGenerator

fitnessEvaluator

private final FitnessEvaluator<T extends Comparable<T>> fitnessEvaluator

eaConfiguration

private final AbstractEAConfiguration<T extends Comparable<T>> eaConfiguration

eaExecutionContext

private final AbstractEAExecutionContext<T extends Comparable<T>> eaExecutionContext

populationSize

private final int populationSize

chromosomeCombinators

private final List<ChromosomeCombinator<T extends Comparable<T>>> chromosomeCombinators

chromosomeFactoryProvider

private final ChromosomeFactoryProvider chromosomeFactoryProvider

replacementStrategyImplementor

private final ReplacementStrategyImplementor<T extends Comparable<T>> replacementStrategyImplementor

mutators

private final List<Mutator> mutators

offspringRatio

private final double offspringRatio

parentSelector

private Selector<T extends Comparable<T>> parentSelector

Constructor Details

EASystem

public EASystem(AbstractEAConfiguration<T> _eaConfiguration,
 long _populationSize,
 List<ChromosomeCombinator<T>> _chromosomeCombinators,
 double _offspringRatio,
 Selector<T> _parentSelectionPolicyHandler,
 List<Mutator> _mutators,
 ReplacementStrategyImplementor<T> _replacementStrategyImplementor,
 AbstractEAExecutionContext<T> _eaExecutionContext,
 FitnessEvaluator<T> _fitnessEvaluator)

Method Details

evaluate

private List<T> evaluate(long generation,
 List<Genotype> population)

initializePopulation

private List<Genotype> initializePopulation()

mutateGenotypes

private List<Genotype> mutateGenotypes(List<Genotype> genotypes)

combineParents

private List<Genotype> combineParents(Population<T> parents,
 GenotypeCombinator genotypeCombinator)

createBasicOffsprings

private List<Genotype> createBasicOffsprings(Population<T> population,
 int offspringsNeeded)

Create offsprings without mutation

Parameters:

population -

offspringsNeeded -

Returns:

getEAConfiguration

public AbstractEAConfiguration<T> getEAConfiguration()

getPopulationSize

public long getPopulationSize()

createOffsprings

public List<Genotype> createOffsprings(Population<T> population,
 int offspringsNeeded)

evolve

public EvolutionResult<T> evolve()

Triggers the evolutionary process

Returns:

evaluateOnce

public List<T> evaluateOnce(long generation,
 List<Genotype> genotypes)