edu.udo.cs.yale.operator.features.construction
Class FourierGeneratingMutation

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

All Implemented Interfaces:

PopulationOperator

public class FourierGeneratingMutation
extends IndividualOperator

The mutation operator for FourierGGA. This operator adds single attributes from the original set, creates new ones and deselect single attributes. For each freshly added attribute a fourier generation will will be performed.

Version:

$Id: FourierGeneratingMutation.java,v 1.1 2006/04/14 07:47:17 ingomierswa Exp $

Author:

Ingo Mierswa

See Also:

FourierGGA

Field Summary

private SinusFactory	factory
private java.util.List<FeatureGenerator>	generators
private int	maxDepth
private int	numberOfConstructed
private int	numberOfOriginal
private java.util.List<Attribute>	originalAttributes
private double	p
private RandomGenerator	random
private java.lang.String[]	unusableFunctions

Constructor Summary

FourierGeneratingMutation(java.util.List<Attribute> originalAttributes, double p, java.util.List<FeatureGenerator> generators, int numberOfConstructed, int numberOfOriginal, int maxPeaks, int adaptionType, int attributesPerPeak, double epsilon, int maxDepth, java.lang.String[] unusableFunctions, RandomGenerator random)

Method Summary

private int	addGeneratedAttribute(AttributeWeightedExampleSet exampleSet) Adds a new attribute.
private int	addOriginalAttribute(AttributeWeightedExampleSet exampleSet)
private void	deselect(AttributeWeightedExampleSet exampleSet, int m)
java.util.List<Individual>	operate(Individual individual) Performs one of the following three mutations: add a newly generated attribute add an original attribute remove an attribute

Methods inherited from class edu.udo.cs.yale.operator.features.IndividualOperator

operate, performOperation

Methods inherited from class java.lang.Object

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

Field Detail

generators

private java.util.List<FeatureGenerator> generators

originalAttributes

private java.util.List<Attribute> originalAttributes

p

private double p

numberOfConstructed

private int numberOfConstructed

numberOfOriginal

private int numberOfOriginal

factory

private SinusFactory factory

maxDepth

private int maxDepth

unusableFunctions

private java.lang.String[] unusableFunctions

random

private RandomGenerator random

Constructor Detail

FourierGeneratingMutation

public FourierGeneratingMutation(java.util.List<Attribute> originalAttributes,
                                 double p,
                                 java.util.List<FeatureGenerator> generators,
                                 int numberOfConstructed,
                                 int numberOfOriginal,
                                 int maxPeaks,
                                 int adaptionType,
                                 int attributesPerPeak,
                                 double epsilon,
                                 int maxDepth,
                                 java.lang.String[] unusableFunctions,
                                 RandomGenerator random)

Method Detail

operate

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

Performs one of the following three mutations:

• add a newly generated attribute
• add an original attribute
• remove an attribute

Specified by:

operate in class IndividualOperator

Throws:

java.lang.Exception

addGeneratedAttribute

private int addGeneratedAttribute(AttributeWeightedExampleSet exampleSet)
                           throws OperatorException

Adds a new attribute. Returns true, if generation was possible.

Throws:

OperatorException

addOriginalAttribute

private int addOriginalAttribute(AttributeWeightedExampleSet exampleSet)
                          throws GenerationException,
                                 OperatorException

Throws:

GenerationException

OperatorException

deselect

private void deselect(AttributeWeightedExampleSet exampleSet,
                      int m)