org.encog.neural.neat.training.opp

Class NEATMutateAddLink

java.lang.Object

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

org.encog.neural.neat.training.opp.NEATMutateAddLink

All Implemented Interfaces:

java.io.Serializable, EvolutionaryOperator

public class NEATMutateAddLink
extends NEATMutation
implements java.io.Serializable

Mutates a NEAT genome by adding a link. To add a link, two random neurons are chosen and a new random link is created between them. There are severals rules. Bias and input neurons can never be the target of a link. We also do not create double links. Two neurons cannot have more than one link going in the same direction. A neuron can have a single link to itself. If the network is only one cycle, then output neurons cannot be a target. ----------------------------------------------------------------------------- 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

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
NEATMutateAddLink()

Method Summary

Modifier and Type	Method and Description
void	performOperation(java.util.Random rnd, Genome[] parents, int parentIndex, Genome[] offspring, int offspringIndex) Perform the evolutionary operation.

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

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

Constructor Detail

NEATMutateAddLink

public NEATMutateAddLink()

Method Detail

performOperation

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

Perform the evolutionary operation.

Specified by:

performOperation in interface EvolutionaryOperator

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.