edu.udo.cs.yale.operator.features.aggregation
Class AggregationMutation

java.lang.Object
  edu.udo.cs.yale.operator.features.aggregation.AggregationMutation

public class AggregationMutation
extends java.lang.Object

Performs an aggregation mutation on integer arrays. Each feature value is mutated with probability 1/n. Mutation is done by randomly selecting a new value between -1 and max(values).

Version:

$Id: AggregationMutation.java,v 1.4 2006/04/05 08:57:23 ingomierswa Exp $

Author:

Ingo Mierswa

Field Summary

private RandomGenerator

random

Constructor Summary

AggregationMutation(RandomGenerator random)

Method Summary

private boolean	isValid(int[] individual) Checks if at least one feature was selected.
private void	mutate(int[] individual) Changes the individual (each gene with probability 1 / n).
void	mutate(java.util.List<AggregationIndividual> population) Invokes the method mutate(int[]) for each individual.

Methods inherited from class java.lang.Object

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

Field Detail

random

private RandomGenerator random

Constructor Detail

AggregationMutation

public AggregationMutation(RandomGenerator random)

Method Detail

isValid

private boolean isValid(int[] individual)

Checks if at least one feature was selected.

mutate

public void mutate(java.util.List<AggregationIndividual> population)

Invokes the method mutate(int[]) for each individual. The parents are kept.

mutate

private void mutate(int[] individual)

Changes the individual (each gene with probability 1 / n). Make clone if original individual should be kept.