net.sourceforge.cilib.functions.continuous.unconstrained
Class Easom

java.lang.Object
  net.sourceforge.cilib.functions.Function
      net.sourceforge.cilib.functions.ContinuousFunction
          net.sourceforge.cilib.functions.continuous.unconstrained.Easom

All Implemented Interfaces:

Serializable, Cloneable

public class Easom
extends ContinuousFunction

Easom function as taken from www-optima.amp.i.kyoto-u.ac.jp/member/student/hedar/Hedar_files/TestGO_files

Characteristics:

• Multimodal
• Not separable
• Regular

f(x) = -1.0; x = (Pi, Pi);

Author:

engel

See Also:

Serialized Form

Constructor Summary

Easom()
Create an instance of Easom.

Method Summary

double	evaluate(Vector x) Evaluate the function with the given Vector as input.
Easom	getClone() Create a cloned copy of the current object and return it.
Object	getMinimum() Get the minimum of the function.

Methods inherited from class net.sourceforge.cilib.functions.ContinuousFunction

evaluate, getMaximum

Methods inherited from class net.sourceforge.cilib.functions.Function

getBehavioralDomainRegistry, getDimension, getDomain, getDomainRegistry, setBehavioralDomain, setBehaviouralDomainRegistry, setDomain

Methods inherited from class java.lang.Object

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

Constructor Detail

Easom

public Easom()

Create an instance of Easom. Domain is defaulted to R(-100, 100)^2.

Method Detail

getClone

public Easom getClone()

Create a cloned copy of the current object and return it. In general the created copy will be a deep copy of the provided instance. As a result this operation an be quite expensive if used incorrectly.

Specified by:

getClone in interface Cloneable

Specified by:

getClone in class ContinuousFunction

Returns:

An exact clone of the current object instance.

See Also:

Object.clone()

getMinimum

public Object getMinimum()

Get the minimum of the function. It is defined to be a value of -1.0.

Overrides:

getMinimum in class ContinuousFunction

Returns:

The minimum function value.

evaluate

public double evaluate(Vector x)

Evaluate the function with the given Vector as input.

Specified by:

evaluate in class ContinuousFunction

Parameters:

x - The input Vector.

Returns:

The value of the evaluation.