Operator.Operations
Class GrowInitialiser

java.lang.Object
  Operator.Operations.GrowInitialiser

All Implemented Interfaces:

CreationOperation, Operation, ParameterI, Stochastic

Direct Known Subclasses:

FullInitialiser

public class GrowInitialiser
extends java.lang.Object
implements CreationOperation, Stochastic

Class for growing individuals to the maximum derrivationTree size of maxDepth

Author:

erikhemberg

Field Summary

protected GEChromosome	chromosome
protected Genotype	genotype
protected GEGrammar	grammar
protected int	initChromSize
protected int	maxDepth
protected int	minDepth
protected RandomNumberGenerator	rng

Constructor Summary

GrowInitialiser(RandomNumberGenerator rng, GEGrammar gegrammar, int maxDepth)
New instance

GrowInitialiser(RandomNumberGenerator rng, GEGrammar gegrammar, java.util.Properties p)
New instance

Method Summary

protected boolean	checkGECodonValue(NimbleTree<Symbol> dt) Check if it is a GECodonValue.
Individual	createIndividual() Creates an Individuals
void	doOperation(Individual operand) Performs the operation on an operand
void	doOperation(java.util.List<Individual> operands) Performs the operation on the list passed
Genotype	getGenotype(int maxLength) Creates a genotype by building a tree to the most maxDepth for one branch.
int	getMaxDepth() Get max depth of tree
int	getMinDepth() Get minimum depth of tree
java.util.ArrayList<java.lang.Integer>	getPossibleRules(NimbleTree<Symbol> dt, Rule rule)
RandomNumberGenerator	getRNG() Get the number generator
boolean	grow(NimbleTree<Symbol> dt) Recursively builds a tree.
void	setMaxDepth(int i) Set maximum depth of tree
void	setMinDepth(int minDepth) Set minimum depth
void	setProperties(java.util.Properties p) Set properties
void	setRNG(RandomNumberGenerator m) Set the number generator

Methods inherited from class java.lang.Object

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

Field Detail

genotype

protected Genotype genotype

chromosome

protected GEChromosome chromosome

rng

protected RandomNumberGenerator rng

maxDepth

protected int maxDepth

minDepth

protected int minDepth

grammar

protected GEGrammar grammar

initChromSize

protected int initChromSize

Constructor Detail

GrowInitialiser

public GrowInitialiser(RandomNumberGenerator rng,
                       GEGrammar gegrammar,
                       int maxDepth)

New instance

Parameters:

rng - random number generator

gegrammar - grammatical evolution grammar

maxDepth - max growth depth of tree

GrowInitialiser

public GrowInitialiser(RandomNumberGenerator rng,
                       GEGrammar gegrammar,
                       java.util.Properties p)

New instance

Parameters:

rng - random number generator

gegrammar - grammatical evolution grammar

p - properties

Method Detail

setRNG

public void setRNG(RandomNumberGenerator m)

Description copied from interface: Stochastic

Set the number generator

Specified by:

setRNG in interface Stochastic

Parameters:

m - number generator

getRNG

public RandomNumberGenerator getRNG()

Description copied from interface: Stochastic

Get the number generator

Specified by:

getRNG in interface Stochastic

Returns:

number generator

setProperties

public void setProperties(java.util.Properties p)

Description copied from interface: ParameterI

Set properties

Specified by:

setProperties in interface ParameterI

Parameters:

p - object containing properties

createIndividual

public Individual createIndividual()

Creates an Individuals

Specified by:

createIndividual in interface CreationOperation

Returns:

created individual

getMinDepth

public int getMinDepth()

Get minimum depth of tree

Returns:

minimum depth

setMinDepth

public void setMinDepth(int minDepth)

Set minimum depth

Parameters:

minDepth - minumum depth

setMaxDepth

public void setMaxDepth(int i)

Set maximum depth of tree

Parameters:

i - max depth

getMaxDepth

public int getMaxDepth()

Get max depth of tree

Returns:

max depth

doOperation

public void doOperation(Individual operand)

Description copied from interface: Operation

Performs the operation on an operand

Specified by:

doOperation in interface Operation

Parameters:

operand - operand to perform operation on

doOperation

public void doOperation(java.util.List<Individual> operands)

Description copied from interface: Operation

Performs the operation on the list passed

Specified by:

doOperation in interface Operation

Parameters:

operands - operands to be operated on

getGenotype

public Genotype getGenotype(int maxLength)

Creates a genotype by building a tree to the most maxDepth for one branch. WHAT TO DO IF SIZE IS LARGER THAN MAX_LENGTH*WRAPS??

Returns:

A valid Genotype

grow

public boolean grow(NimbleTree<Symbol> dt)

Recursively builds a tree.

Parameters:

dt - Tree to grow on

Returns:

If the tree is valid

getPossibleRules

public java.util.ArrayList<java.lang.Integer> getPossibleRules(NimbleTree<Symbol> dt,
                                                               Rule rule)

checkGECodonValue

protected boolean checkGECodonValue(NimbleTree<Symbol> dt)

Check if it is a GECodonValue. Sapecific construct for inserting informatino into the grammar

Parameters:

dt - tree

Returns:

if it is a GECodonValue