jenes.stage

Class AlgorithmStage<T extends Chromosome>

java.lang.Object

jenes.stage.AbstractStage<T>

jenes.stage.AlgorithmStage<T>

Type Parameters:

T - The class chromosomes flowing across the stage.

public class AlgorithmStage<T extends Chromosome>
extends AbstractStage<T>

A stage wrapping an algoithm in order to make it part of a wider algorithm.

Since:

1.3

Version:

2.0

Field Summary

Fields inherited from class jenes.stage.AbstractStage

biggerIsBetter, fitness, ga

Constructor Summary

Constructors

Constructor and Description
AlgorithmStage(GeneticAlgorithm<T> algorithm) Builds a wrapper stage for the specified algorithm.

Method Summary

Methods

Modifier and Type	Method and Description
GeneticAlgorithm<T>	getAlgorithm() Returns the wrapped algorithm
void	process(Population<T> in, Population<T> out) Processes the input population and tranforms it into the output population.
void	setBiggerIsBetter(boolean flag, boolean recursively) Deprecated.
void	setFitness(Fitness fit, boolean recursively) Change the Fitness to this stage propagating the change recursively according to the flag given as parameter

Methods inherited from class jenes.stage.AbstractStage

dispose, getFitness, init, isBiggerBetter, isFitnessChanged, setBiggerIsBetter, setFitness

Methods inherited from class java.lang.Object

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

Constructor Detail

AlgorithmStage

public AlgorithmStage(GeneticAlgorithm<T> algorithm)

Builds a wrapper stage for the specified algorithm.

Parameters:

algorithm - the algorithm to wrap.

Method Detail

getAlgorithm

public final GeneticAlgorithm<T> getAlgorithm()

Returns the wrapped algorithm

Returns:

the algorithm

setBiggerIsBetter

@Deprecated
public void setBiggerIsBetter(boolean flag,
                                boolean recursively)

Deprecated.

Overrides:

setBiggerIsBetter in class AbstractStage<T extends Chromosome>

Parameters:

flag - true, if the best individual has the higher fitness

recursively - true, to propagate this setting down, otherwise false.

setFitness

public void setFitness(Fitness fit,
              boolean recursively)

Description copied from class: AbstractStage

Change the Fitness to this stage propagating the change recursively according to the flag given as parameter

Overrides:

setFitness in class AbstractStage<T extends Chromosome>

process

public void process(Population<T> in,
           Population<T> out)
             throws StageException

Description copied from class: AbstractStage

Processes the input population and tranforms it into the output population. Note: - Out population is made of recicled individuals. There is a need of new individuals to add only when there is a need to increase the population size. For pre-initalized individual just use setAs method. This is done for an efficient memory management. - A stage can modify the input population. So input passed to process method can be mutated when the process method ends.

Specified by:

process in class AbstractStage<T extends Chromosome>

Parameters:

in - the input population

out - the output population

Throws:

StageException