FitnessEvaluation.RoyalTree
Class RoyalTree

java.lang.Object
  FitnessEvaluation.RoyalTree.RoyalTree

All Implemented Interfaces:

FitnessFunction, ParameterI

public class RoyalTree
extends java.lang.Object
implements FitnessFunction

Constructor Summary

RoyalTree()
Creates a new instance of RoyalTree

Method Summary

boolean	canCache() Return true if it is ok to cache the results of the fitness function
double	evaluate(java.lang.String s) Given a string, calculate its fitness.
double	evaluateString(Phenotype p) The phenotype will be a tree in lisp-syntax.
void	getFitness(Individual i) Creates a new instance of FitnessEvaluator
static void	main(java.lang.String[] args)
void	setProperties(java.util.Properties p) Set properties

Methods inherited from class java.lang.Object

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

Constructor Detail

RoyalTree

public RoyalTree()

Creates a new instance of RoyalTree

Method Detail

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

evaluateString

public double evaluateString(Phenotype p)

The phenotype will be a tree in lisp-syntax. Its nonterminals will be A, B, C, etc (of increasing arity), and its only terminal is x. eg: ( C ( A x ) ( A x ) ( B ( A x ) x ) ).

Parameters:

p - The candidate phenotype

Returns:

double fitness

evaluate

public double evaluate(java.lang.String s)

Given a string, calculate its fitness. It's useful to have a method which takes a String (rather than a Phenotype) for testing porpoises.

Parameters:

s - string describing the candidate tree.

Returns:

fitness (in classical royal-tree maximising format)

getFitness

public void getFitness(Individual i)

Description copied from interface: FitnessFunction

Creates a new instance of FitnessEvaluator

Specified by:

getFitness in interface FitnessFunction

Parameters:

i - Evaluated individual

canCache

public boolean canCache()

Description copied from interface: FitnessFunction

Return true if it is ok to cache the results of the fitness function

Specified by:

canCache in interface FitnessFunction

main

public static void main(java.lang.String[] args)