org.oakgp.evolve.mutate

Class SubTreeMutation

java.lang.Object

org.oakgp.evolve.mutate.SubTreeMutation

All Implemented Interfaces:

GeneticOperator

public final class SubTreeMutation
extends Object
implements GeneticOperator

Randomly replaces a subtree of the parent with a newly generated subtree.

Constructor Summary

Constructors

Constructor and Description
SubTreeMutation(Random random, TreeGenerator treeGenerator) Creates a SubTreeMutation that uses the given TreeGenerator to generate new subtrees to replace existing subtrees.

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

SubTreeMutation

public SubTreeMutation(Random random,
                       TreeGenerator treeGenerator)

Creates a SubTreeMutation that uses the given TreeGenerator to generate new subtrees to replace existing subtrees.

Parameters:

random - used to randomly select nodes to mutate

treeGenerator - used to generate new subtrees to replace 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