pl.edu.agh.age.compute.stream.emas

Class EmasStep<S extends Solution<?>>

java.lang.Object

pl.edu.agh.age.compute.stream.emas.EmasStep<S>

Type Parameters:

S - the problem solution class

All Implemented Interfaces:

Step<EmasAgent>

public final class EmasStep<S extends Solution<?>>
extends java.lang.Object
implements Step<EmasAgent>

The class EmasStep implementing a default step for EMAS Agents based problems. The following operators are required:

• Recombination
• Energy Transfer
• PopulationEvaluator

The following operators are optional:

• Mutation

Field Summary

Fields

Modifier and Type	Field and Description
private AsexualReproduction	asexualReproduction
private AsexualEnergyTransfer	asexualReproductionTransfer
private java.util.function.Predicate<EmasAgent>	deathPredicate
private Fight	fight
private java.util.Comparator<EmasAgent>	fightAgentComparator
private FightEnergyTransfer	fightEnergyTransfer
private MigrationParameters	migrationParameters
private @Nullable Mutation<S>	mutation
private PopulationEvaluator<EmasAgent>	populationEvaluator
private Recombination<S>	recombination
private java.util.function.Predicate<EmasAgent>	reproductionPredicate
private SexualReproduction	sexualReproduction
private EnergyTransfer	sexualReproductionTransfer

Constructor Summary

Constructors

Constructor and Description

EmasStep(java.util.Comparator<EmasAgent> fightAgentComparator, FightEnergyTransfer fightEnergyTransfer, Recombination<S> recombination, @Nullable Mutation<S> mutation, PopulationEvaluator<EmasAgent> populationEvaluator, java.util.function.Predicate<EmasAgent> deathPredicate, java.util.function.Predicate<EmasAgent> reproductionPredicate, EnergyTransfer sexualReproductionTransfer, AsexualEnergyTransfer asexualReproductionTransfer, MigrationParameters migrationParameters)

Method Summary

Modifier and Type	Method and Description
private Pipeline	migrateIfNecessary(Pipeline population, long stepNumber, Environment environment)
private AsexualReproduction	resolveAsexualReproduction()
private Fight	resolveFight()
private java.util.function.Predicate<EmasAgent>	resolveMigrationPredicate(Pipeline population)
private SexualReproduction	resolveSexualReproduction()
private boolean	shouldMigrate(long currentStepNumber)
io.vavr.collection.List<EmasAgent>	stepOn(long stepNumber, io.vavr.collection.List<EmasAgent> population, Environment environment) Method invoked during each iteration.

Methods inherited from class java.lang.Object

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

Field Detail

fightAgentComparator

private final java.util.Comparator<EmasAgent> fightAgentComparator

fightEnergyTransfer

private final FightEnergyTransfer fightEnergyTransfer

fight

private final Fight fight

recombination

private final Recombination<S extends Solution<?>> recombination

mutation

private final @Nullable Mutation<S extends Solution<?>> mutation

populationEvaluator

private final PopulationEvaluator<EmasAgent> populationEvaluator

deathPredicate

private final java.util.function.Predicate<EmasAgent> deathPredicate

reproductionPredicate

private final java.util.function.Predicate<EmasAgent> reproductionPredicate

sexualReproductionTransfer

private final EnergyTransfer sexualReproductionTransfer

sexualReproduction

private final SexualReproduction sexualReproduction

asexualReproductionTransfer

private final AsexualEnergyTransfer asexualReproductionTransfer

asexualReproduction

private final AsexualReproduction asexualReproduction

migrationParameters

private final MigrationParameters migrationParameters

Constructor Detail

EmasStep

public EmasStep(java.util.Comparator<EmasAgent> fightAgentComparator,
                FightEnergyTransfer fightEnergyTransfer,
                Recombination<S> recombination,
                @Nullable Mutation<S> mutation,
                PopulationEvaluator<EmasAgent> populationEvaluator,
                java.util.function.Predicate<EmasAgent> deathPredicate,
                java.util.function.Predicate<EmasAgent> reproductionPredicate,
                EnergyTransfer sexualReproductionTransfer,
                AsexualEnergyTransfer asexualReproductionTransfer,
                MigrationParameters migrationParameters)

Method Detail

stepOn

public io.vavr.collection.List<EmasAgent> stepOn(long stepNumber,
                                                 io.vavr.collection.List<EmasAgent> population,
                                                 Environment environment)

Description copied from interface: Step

Method invoked during each iteration. Make sure that a minimum number of operations is executed here.

Specified by:

stepOn in interface Step<EmasAgent>

Parameters:

stepNumber - the current step number

population - the current population

environment - the environment

Returns:

the new population - a result of step iteration calculations

resolveFight

private Fight resolveFight()

resolveSexualReproduction

private SexualReproduction resolveSexualReproduction()

resolveAsexualReproduction

private AsexualReproduction resolveAsexualReproduction()

migrateIfNecessary

private Pipeline migrateIfNecessary(Pipeline population,
                                    long stepNumber,
                                    Environment environment)

shouldMigrate

private boolean shouldMigrate(long currentStepNumber)

resolveMigrationPredicate

private java.util.function.Predicate<EmasAgent> resolveMigrationPredicate(Pipeline population)