ec.app.ecsuite
Class ECSuite

java.lang.Object
  ec.Problem
      ec.app.ecsuite.ECSuite

All Implemented Interfaces:

Prototype, Setup, SimpleProblemForm, java.io.Serializable, java.lang.Cloneable

public class ECSuite
extends Problem
implements SimpleProblemForm

Several standard Evolutionary Computation functions are implemented: Rastrigin, De Jong's test suite F1-F4 problems (Sphere, Rosenbrock, Step, Noisy-Quartic), Booth (from [Schwefel, 1995]), and Griewangk. As the SimpleFitness is used for maximization problems, the mapping f(x) --> -f(x) is used to transform the problems into maximization ones.

Parameters

base.type String, one of: rosenbrock rastrigin sphere step noisy-quartic kdj-f1 kdj-f2 kdj-f3 kdj-f4 booth [or] griewangk/td>

(The vector problem to test against. Some of the types are synonyms: kdj-f1 = sphere, kdj-f2 = rosenbrock, kdj-f3 = step, kdj-f4 = noisy-quartic. "kdj" stands for "Ken DeJong", and the numbers are the problems in his test suite)

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Serialized Form

Field Summary

static float	A
static java.lang.String	P_BOOTH
static java.lang.String	P_F1
static java.lang.String	P_F2
static java.lang.String	P_F3
static java.lang.String	P_F4
static java.lang.String	P_GRIEWANGK
static java.lang.String	P_NOISY_QUARTIC
static java.lang.String	P_RASTRIGIN
static java.lang.String	P_ROSENBROCK
static java.lang.String	P_SPHERE
static java.lang.String	P_STEP
static java.lang.String	P_WHICH_PROBLEM
static int	PROB_BOOTH
static int	PROB_GRIEWANGK
static int	PROB_NOISY_QUARTIC
static int	PROB_RASTRIGIN
static int	PROB_ROSENBROCK
static int	PROB_SPHERE
static int	PROB_STEP
int	problemType

Fields inherited from class ec.Problem

P_PROBLEM

Constructor Summary

ECSuite()

Method Summary

void	describe(Individual ind, EvolutionState state, int threadnum, int log, int verbosity)
void	describe(Individual ind, EvolutionState state, int subpopulation, int threadnum, int log, int verbosity) "Reevaluates" an individual, for the purpose of printing out interesting facts about the individual in the context of the Problem, and logs the results.
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.
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.

Methods inherited from class ec.Problem

canEvaluate, clone, closeContacts, defaultBase, evaluate, finishEvaluating, getBase, initializeContacts, prepareToEvaluate, reinitializeContacts, setBase

Methods inherited from class java.lang.Object

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

Methods inherited from interface ec.simple.SimpleProblemForm

canEvaluate, evaluate

Field Detail

P_WHICH_PROBLEM

public static final java.lang.String P_WHICH_PROBLEM

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Constant Field Values

P_ROSENBROCK

public static final java.lang.String P_ROSENBROCK

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Constant Field Values

P_RASTRIGIN

public static final java.lang.String P_RASTRIGIN

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Constant Field Values

P_SPHERE

public static final java.lang.String P_SPHERE

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Constant Field Values

P_STEP

public static final java.lang.String P_STEP

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Constant Field Values

P_NOISY_QUARTIC

public static final java.lang.String P_NOISY_QUARTIC

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Constant Field Values

P_F1

public static final java.lang.String P_F1

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Constant Field Values

P_F2

public static final java.lang.String P_F2

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Constant Field Values

P_F3

public static final java.lang.String P_F3

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Constant Field Values

P_F4

public static final java.lang.String P_F4

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Constant Field Values

P_BOOTH

public static final java.lang.String P_BOOTH

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Constant Field Values

P_GRIEWANGK

public static final java.lang.String P_GRIEWANGK

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Constant Field Values

PROB_ROSENBROCK

public static final int PROB_ROSENBROCK

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Constant Field Values

PROB_RASTRIGIN

public static final int PROB_RASTRIGIN

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Constant Field Values

PROB_SPHERE

public static final int PROB_SPHERE

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Constant Field Values

PROB_STEP

public static final int PROB_STEP

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Constant Field Values

PROB_NOISY_QUARTIC

public static final int PROB_NOISY_QUARTIC

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Constant Field Values

PROB_BOOTH

public static final int PROB_BOOTH

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Constant Field Values

PROB_GRIEWANGK

public static final int PROB_GRIEWANGK

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Constant Field Values

problemType

public int problemType

A

public static final float A

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Constant Field Values

Constructor Detail

ECSuite

public ECSuite()

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

Overrides:

evaluate in class Problem

describe

public void describe(Individual ind,
                     EvolutionState state,
                     int threadnum,
                     int log,
                     int verbosity)

Specified by:

describe in interface SimpleProblemForm

Overrides:

describe in class Problem

describe

public void describe(Individual ind,
                     EvolutionState state,
                     int subpopulation,
                     int threadnum,
                     int log,
                     int verbosity)

Description copied from interface: SimpleProblemForm

"Reevaluates" an individual, for the purpose of printing out interesting facts about the individual in the context of the Problem, and logs the results. This might be called to print out facts about the best individual in the population, for example.

Specified by:

describe in interface SimpleProblemForm

Overrides:

describe in class Problem