ec.app.hiff

Class HIFF

java.lang.Object

ec.Problem

ec.app.hiff.HIFF

All Implemented Interfaces:

Prototype, Setup, SimpleProblemForm, Serializable, Cloneable

public class HIFF
extends Problem
implements SimpleProblemForm

HIFF implements the Hierarchical If-And-Only-If problem developed by Watson, Hornby and Pollack. See The HIFF Generator for more information and papers.

Parameters

base.p int >= 0	(number of blocks at each level)
base.k int >= 0	(number of hierarchical levels)
base.rc double	(ratio of block contributions)

Version:

1.0

Author:

Keith Sullivan

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int	K
(package private) int	P
static String	P_K
static String	P_P
static String	P_RC
(package private) int	Rc

Fields inherited from class ec.Problem

P_PROBLEM

Constructor Summary

Constructors

Constructor and Description
HIFF()

Method Summary

Methods

Modifier and Type	Method and Description
void	evaluate(EvolutionState state, Individual ind, int subpopulation, int threadnum) Evaluates the individual in ind, if necessary (perhaps not evaluating them if their evaluated flags are true), and sets their fitness appropriately.
(package private) double	f(double b)
(package private) double	H(double[] genes)
void	setup(EvolutionState state, Parameter base) Sets up the object by reading it from the parameters stored in state, built off of the parameter base base.
(package private) double	t(double[] transform, int first)

Methods inherited from class ec.Problem

canEvaluate, clone, closeContacts, defaultBase, describe, describe, finishEvaluating, initializeContacts, prepareToEvaluate, reinitializeContacts

Methods inherited from class java.lang.Object

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

Methods inherited from interface ec.simple.SimpleProblemForm

describe

Field Detail

P_K

public static final String P_K

See Also:

Constant Field Values

P_P

public static final String P_P

See Also:

Constant Field Values

P_RC

public static final String P_RC

See Also:

Constant Field Values

K

int K

P

int P

Rc

int Rc

Constructor Detail

HIFF

public HIFF()

Method Detail

setup

public void setup(EvolutionState state,
         Parameter base)

Description copied from interface: Prototype

Sets up the object by reading it from the parameters stored in state, built off of the parameter base base. If an ancestor implements this method, be sure to call super.setup(state,base); before you do anything else.

For prototypes, setup(...) is typically called once for the prototype instance; cloned instances do not receive the setup(...) call. setup(...) may be called more than once; the only guarantee is that it will get called at least once on an instance or some "parent" object from which it was ultimately cloned.

Specified by:

setup in interface Prototype

Specified by:

setup in interface Setup

Overrides:

setup in class Problem

evaluate

public void evaluate(EvolutionState state,
            Individual ind,
            int subpopulation,
            int threadnum)

Description copied from interface: SimpleProblemForm

Evaluates the individual in ind, if necessary (perhaps not evaluating them if their evaluated flags are true), and sets their fitness appropriately.

Specified by:

evaluate in interface SimpleProblemForm

H

double H(double[] genes)

t

double t(double[] transform,
       int first)

f

double f(double b)