Package org.opt4j.optimizer.mopso

Class MutateDoubleNonUniform

java.lang.Object

org.opt4j.operator.mutate.MutateDouble

org.opt4j.operator.mutate.MutateDoubleElementwise

org.opt4j.optimizer.mopso.MutateDoubleUniform

org.opt4j.optimizer.mopso.MutateDoubleNonUniform

All Implemented Interfaces:

Operator<DoubleGenotype>, Mutate<DoubleGenotype>

public class MutateDoubleNonUniform
extends MutateDoubleUniform

The MutateDoubleNonUniform non-uniformly mutates a DoubleGenotype elementwise.

Field Summary

Fields

Modifier and Type	Field	Description
protected final Iteration	iteration

Fields inherited from class org.opt4j.optimizer.mopso.MutateDoubleUniform

perturbation

Fields inherited from class org.opt4j.operator.mutate.MutateDouble

normalize, random

Constructor Summary

Constructors

Constructor	Description
MutateDoubleNonUniform(Rand random, NormalizeDouble normalize, Iteration iteration, double perturbation)	Constructs a MutateDoubleNonUniform.

Method Summary

Modifier and Type	Method	Description
protected double	delta(double perturbation)	Calculates the delta value for the non-uniform mutation.
protected double	mutateElement(double x, double lb, double ub, double p)	Mutate one element of the list.

Methods inherited from class org.opt4j.operator.mutate.MutateDoubleElementwise

mutateList

Methods inherited from class org.opt4j.operator.mutate.MutateDouble

mutate

Methods inherited from class java.lang.Object

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

Field Details

iteration

protected final Iteration iteration

Constructor Details

MutateDoubleNonUniform

@Inject
public MutateDoubleNonUniform(Rand random,
 NormalizeDouble normalize,
 Iteration iteration,
 double perturbation)

Constructs a MutateDoubleNonUniform.

Parameters:

random - the random number generator

normalize - the normalize operator

iteration - the iteration counter

perturbation - the perturbation index

Method Details

mutateElement

protected double mutateElement(double x,
 double lb,
 double ub,
 double p)

Description copied from class: MutateDoubleElementwise

Mutate one element of the list.

Overrides:

mutateElement in class MutateDoubleUniform

Parameters:

x - the element

lb - the lower bound

ub - the upper bound

p - the mutation rate

Returns:

the mutated element

delta

protected double delta(double perturbation)

Calculates the delta value for the non-uniform mutation.

Parameters:

perturbation - the perturbation value

Returns:

the delta value