org.eclipse.viatra.dse.evolutionary

Class EvolutionaryStrategy

java.lang.Object

org.eclipse.viatra.dse.evolutionary.EvolutionaryStrategy

All Implemented Interfaces:

IStrategy

public class EvolutionaryStrategy
extends java.lang.Object
implements IStrategy

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EvolutionaryStrategy.EvolutionaryStrategySharedObject

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.List<IEvolutionaryStrategyAdapter>	adapters
protected ThreadContext	context
protected java.util.List<ICrossover>	crossovers
protected DesignSpaceManager	dsm
protected boolean	isFirstThread
protected java.util.concurrent.atomic.AtomicBoolean	isInterrupted
protected IParentSelectionStrategy	localParentSelector
protected org.apache.log4j.Logger	logger
protected java.util.List<IMutation>	mutations
protected java.util.Random	random
protected EvolutionaryStrategy.EvolutionaryStrategySharedObject	so

Constructor Summary

Constructors

Constructor and Description
EvolutionaryStrategy()

Method Summary

Modifier and Type	Method and Description
protected boolean	addToChildren(TrajectoryFitness child)
void	explore() This method explores the design space as the implementation specifies.
protected void	generateChildren()
void	initStrategy(ThreadContext context) Initializes the strategy with a specific ThreadContext.
void	interruptStrategy() The implementation of this interface should be ready to be interrupted.
protected void	mainThread()
protected void	savePopulationsAsSolutions(java.util.List<TrajectoryFitness> survivedPopulation)
protected void	startThreads()

Methods inherited from class java.lang.Object

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

Field Detail

so

protected EvolutionaryStrategy.EvolutionaryStrategySharedObject so

crossovers

protected java.util.List<ICrossover> crossovers

mutations

protected java.util.List<IMutation> mutations

adapters

protected java.util.List<IEvolutionaryStrategyAdapter> adapters

context

protected ThreadContext context

dsm

protected DesignSpaceManager dsm

isInterrupted

protected java.util.concurrent.atomic.AtomicBoolean isInterrupted

random

protected java.util.Random random

localParentSelector

protected IParentSelectionStrategy localParentSelector

isFirstThread

protected boolean isFirstThread

logger

protected org.apache.log4j.Logger logger

Constructor Detail

EvolutionaryStrategy

public EvolutionaryStrategy()

Method Detail

initStrategy

public void initStrategy(ThreadContext context)

Description copied from interface: IStrategy

Initializes the strategy with a specific ThreadContext.

Specified by:

initStrategy in interface IStrategy

Parameters:

context - The context.

explore

public void explore()

Description copied from interface: IStrategy

This method explores the design space as the implementation specifies. It will be called only once, hence the exploration loop is run by the implementation. The termination condition is also specified by the implementation and when it returns the exploration thread will be disposed.

Specified by:

explore in interface IStrategy

mainThread

protected void mainThread()
                   throws java.lang.InterruptedException,
                          java.util.concurrent.BrokenBarrierException

Throws:

java.lang.InterruptedException

java.util.concurrent.BrokenBarrierException

startThreads

protected void startThreads()

generateChildren

protected void generateChildren()

addToChildren

protected boolean addToChildren(TrajectoryFitness child)

Parameters:

child -

Returns:

True, if children population is full.

savePopulationsAsSolutions

protected void savePopulationsAsSolutions(java.util.List<TrajectoryFitness> survivedPopulation)

interruptStrategy

public void interruptStrategy()

Description copied from interface: IStrategy

The implementation of this interface should be ready to be interrupted. If this method is called, the IStrategy.explore() method should return ASAP. This method is also called by the SolutionStore class if enough solutions are found.

Specified by:

interruptStrategy in interface IStrategy