org.encog.neural.neat.training.opp

Class NEATMutateWeights

java.lang.Object

org.encog.neural.neat.training.opp.NEATMutation

org.encog.neural.neat.training.opp.NEATMutateWeights

All Implemented Interfaces:

EvolutionaryOperator

public class NEATMutateWeights
extends NEATMutation

Mutate the weights of a genome. A method is select the links for mutation. Another method should also be provided for the actual mutation. ----------------------------------------------------------------------------- http://www.cs.ucf.edu/~kstanley/ Encog's NEAT implementation was drawn from the following three Journal Articles. For more complete BibTeX sources, see NEATNetwork.java. Evolving Neural Networks Through Augmenting Topologies Generating Large-Scale Neural Networks Through Discovering Geometric Regularities Automatic feature selection in neuroevolution

Constructor Summary

Constructors

Constructor and Description
NEATMutateWeights(SelectLinks theLinkSelection, MutateLinkWeight theWeightMutation) Construct a weight mutation operator.

Method Summary

Methods

Modifier and Type	Method and Description
SelectLinks	getLinkSelection()
MutateLinkWeight	getWeightMutation()
void	performOperation(Random rnd, Genome[] parents, int parentIndex, Genome[] offspring, int offspringIndex) Perform the evolutionary operation.
String	toString()

Methods inherited from class org.encog.neural.neat.training.opp.NEATMutation

chooseRandomNeuron, createLink, getElementPos, getOwner, init, isDuplicateLink, isNeuronNeeded, obtainGenome, offspringProduced, parentsNeeded, removeNeuron

Methods inherited from class java.lang.Object

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

Constructor Detail

NEATMutateWeights

public NEATMutateWeights(SelectLinks theLinkSelection,
                 MutateLinkWeight theWeightMutation)

Construct a weight mutation operator.

Parameters:

theLinkSelection - The method used to choose the links for mutation.

theWeightMutation - The method used to actually mutate the weights.

Method Detail

getLinkSelection

public SelectLinks getLinkSelection()

Returns:

The method used to select links for mutation.

getWeightMutation

public MutateLinkWeight getWeightMutation()

Returns:

The method used to mutate the weights.

performOperation

public void performOperation(Random rnd,
                    Genome[] parents,
                    int parentIndex,
                    Genome[] offspring,
                    int offspringIndex)

Perform the evolutionary operation.

Parameters:

rnd - A random number generator.

parents - The parents.

parentIndex - The index into the parents array.

offspring - The offspring.

offspringIndex - An index into the offspring array.

toString

public String toString()

Overrides:

toString in class Object