org.opt4j.core.optimizer

Class AbstractOptimizer

java.lang.Object

org.opt4j.core.optimizer.AbstractOptimizer

All Implemented Interfaces:

Optimizer

Direct Known Subclasses:

OptimizationMediator

public abstract class AbstractOptimizer
extends java.lang.Object
implements Optimizer

The AbstractOptimizer is an abstract implementation of a population-based Optimizer. It provides the necessary coupling to the framework by informing all OptimizerStateListeners and OptimizerIterationListeners, calling the IndividualCompleter to decode and evaluate new Individuals and adding them to the Archive. The Control is checked regularly to allow user interaction. To implement an iteration-based Optimizer, the IterativeOptimizer interface is available.

Field Summary

Fields

Modifier and Type	Field and Description
protected Archive	archive
protected IndividualCompleter	completer
protected Control	control
protected Iteration	iteration
protected java.util.Set<OptimizerIterationListener>	iterationListeners
protected boolean	optimizing
protected Population	population
protected java.util.Set<OptimizerStateListener>	stateListeners

Constructor Summary

Constructors

Constructor and Description
AbstractOptimizer(Population population, Archive archive, IndividualCompleter completer, Control control, Iteration iteration) Constructs an AbstractOptimizer with a Population, an Archive, an IndividualFactory, and a IndividualCompleter.

Method Summary

Modifier and Type	Method and Description
void	addOptimizerIterationListener(OptimizerIterationListener listener) Adds an OptimizerIterationListener to this optimizer.
void	addOptimizerStateListener(OptimizerStateListener listener) Adds an OptimizerStateListener to this optimizer.
int	getIteration() Return the current iteration.
protected void	injectListeners(java.util.Set<OptimizerStateListener> stateListeners, java.util.Set<OptimizerIterationListener> iterationListeners)
boolean	isRunning() Returns true if the Optimizer is running.
protected void	nextIteration() Call this method if a new iteration started.
void	removeOptimizerIterationListener(OptimizerIterationListener listener) Removes an OptimizerIterationListener from this optimizer.
void	removeOptimizerStateListener(OptimizerStateListener listener) Removes an OptimizerStateListener from this optimizer.
void	startOptimization() This method is called to start the optimization process.
void	stopOptimization() This method is called once the optimization process has stopped.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.opt4j.core.optimizer.Optimizer

optimize

Field Detail

iteration

protected final Iteration iteration

population

protected final Population population

archive

protected final Archive archive

completer

protected final IndividualCompleter completer

control

protected final Control control

stateListeners

protected final java.util.Set<OptimizerStateListener> stateListeners

iterationListeners

protected final java.util.Set<OptimizerIterationListener> iterationListeners

optimizing

protected boolean optimizing

Constructor Detail

AbstractOptimizer

public AbstractOptimizer(Population population,
                         Archive archive,
                         IndividualCompleter completer,
                         Control control,
                         Iteration iteration)

Constructs an AbstractOptimizer with a Population, an Archive, an IndividualFactory, and a IndividualCompleter.

Parameters:

population - the specified population

archive - the specified archive

completer - the specified completer

control - the control

iteration - the iteration counter

Method Detail

injectListeners

@Inject
protected void injectListeners(java.util.Set<OptimizerStateListener> stateListeners,
                                        java.util.Set<OptimizerIterationListener> iterationListeners)

getIteration

public int getIteration()

Description copied from interface: Optimizer

Return the current iteration.

Specified by:

getIteration in interface Optimizer

Returns:

the current iteration

isRunning

public boolean isRunning()

Description copied from interface: Optimizer

Returns true if the Optimizer is running.

Specified by:

isRunning in interface Optimizer

Returns:

true if the optimizer is running

nextIteration

protected void nextIteration()
                      throws TerminationException,
                             StopException

Call this method if a new iteration started.

Throws:

StopException - if the optimization is stopped

TerminationException - if the optimization is terminated

startOptimization

public void startOptimization()

Description copied from interface: Optimizer

This method is called to start the optimization process.

Specified by:

startOptimization in interface Optimizer

stopOptimization

public void stopOptimization()

Description copied from interface: Optimizer

This method is called once the optimization process has stopped.

Specified by:

stopOptimization in interface Optimizer

addOptimizerIterationListener

public void addOptimizerIterationListener(OptimizerIterationListener listener)

Description copied from interface: Optimizer

Adds an OptimizerIterationListener to this optimizer.

Specified by:

addOptimizerIterationListener in interface Optimizer

Parameters:

listener - the OptimizerIterationListener to add

See Also:

Optimizer.removeOptimizerIterationListener(org.opt4j.core.optimizer.OptimizerIterationListener)

addOptimizerStateListener

public void addOptimizerStateListener(OptimizerStateListener listener)

Description copied from interface: Optimizer

Adds an OptimizerStateListener to this optimizer.

Specified by:

addOptimizerStateListener in interface Optimizer

Parameters:

listener - the OptimizerStateListener to add

See Also:

Optimizer.removeOptimizerStateListener(org.opt4j.core.optimizer.OptimizerStateListener)

removeOptimizerIterationListener

public void removeOptimizerIterationListener(OptimizerIterationListener listener)

Description copied from interface: Optimizer

Removes an OptimizerIterationListener from this optimizer.

Specified by:

removeOptimizerIterationListener in interface Optimizer

Parameters:

listener - the OptimizerIterationListener to remove

See Also:

Optimizer.addOptimizerIterationListener(org.opt4j.core.optimizer.OptimizerIterationListener)

removeOptimizerStateListener

public void removeOptimizerStateListener(OptimizerStateListener listener)

Description copied from interface: Optimizer

Removes an OptimizerStateListener from this optimizer.

Specified by:

removeOptimizerStateListener in interface Optimizer

Parameters:

listener - the OptimizerStateListener to remove

See Also:

Optimizer.addOptimizerStateListener(org.opt4j.core.optimizer.OptimizerStateListener)