org.oakgp.evolve.mutate

Class PointMutation

java.lang.Object

org.oakgp.evolve.mutate.PointMutation

All Implemented Interfaces:

GeneticOperator

public final class PointMutation
extends Object
implements GeneticOperator

Randomly changes a point (node) in the parent.

A node in the parent is selected at random and replaced with another primitive of the same type and arity.

Also known as node replacement mutation.

Constructor Summary

Constructors

Constructor and Description
PointMutation(Random random, PrimitiveSet primitiveSet) Creates a PointMutation that uses the given Random to select nodes to mutate.

Method Summary

Modifier and Type	Method and Description
Node	evolve(NodeSelector selector) Returns a new Node evolved from existing instances.

Methods inherited from class java.lang.Object

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

Constructor Detail

PointMutation

public PointMutation(Random random,
                     PrimitiveSet primitiveSet)

Creates a PointMutation that uses the given Random to select nodes to mutate.

Parameters:

random - used to randomly select nodes to mutate

primitiveSet - used to select replacements for nodes selected for mutation

Method Detail

evolve

public Node evolve(NodeSelector selector)

Description copied from interface: GeneticOperator

Returns a new Node evolved from existing instances.

Specified by:

evolve in interface GeneticOperator

Parameters:

selector - used to select the existing instances to use as a basis for evolving a new instance

Returns:

a new Node evolved from existing instances obtained from selector