edu.udo.cs.yale.operator.features
Class IndividualOperator

java.lang.Object
  edu.udo.cs.yale.operator.features.IndividualOperator

All Implemented Interfaces:

PopulationOperator

Direct Known Subclasses:

AttributeGenerator, BackwardElimination, ConstantGeneration, DirectedGeneratingMutation, EquivalentAttributeRemoval, ForwardSelection, FourierGeneratingMutation, FourierGenerator, GeneratingMutation, RemoveUselessAttributes, SelectionMutation, SimpleWeighting, SwitchingForwardSelection, WeightingMutation

public abstract class IndividualOperator
extends java.lang.Object
implements PopulationOperator

A PopulationOperator that modifies a population by modifying all individuals independently. The modifications can be made each per attribute block or for single attributes.

Version:

$Id: IndividualOperator.java,v 2.17 2006/03/27 13:21:58 ingomierswa Exp $

Author:

Simon Fischer, Ingo Mierswa

Constructor Summary

IndividualOperator()

Method Summary

abstract java.util.List<Individual>	operate(Individual individual) Subclasses must implement this method providing a list of new individuals.
void	operate(Population pop) Operates on all individuals, removes the original individuals and adds the new ones.
boolean	performOperation(int generation) The default implementation returns true for every generation.

Methods inherited from class java.lang.Object

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

Constructor Detail

IndividualOperator

public IndividualOperator()

Method Detail

operate

public abstract java.util.List<Individual> operate(Individual individual)
                                            throws java.lang.Exception

Subclasses must implement this method providing a list of new individuals. individual will be removed from the population so it might be useful to return a list of size 1 containing only the modified individual. If the original individual should also be part of the new population it must also be added to the result list.

Throws:

java.lang.Exception

operate

public void operate(Population pop)
             throws java.lang.Exception

Operates on all individuals, removes the original individuals and adds the new ones.

Specified by:

operate in interface PopulationOperator

Throws:

java.lang.Exception

performOperation

public boolean performOperation(int generation)

The default implementation returns true for every generation.

Specified by:

performOperation in interface PopulationOperator