net.sourceforge.cilib.functions.continuous
Class Schaffer6

java.lang.Object
  net.sourceforge.cilib.functions.Function
      net.sourceforge.cilib.functions.ContinuousFunction
          net.sourceforge.cilib.functions.continuous.Schaffer6

All Implemented Interfaces:

Serializable, Cloneable

public class Schaffer6
extends ContinuousFunction

The Schaffer F6 function. Minimum: f(x,y) = 0; (x,y) = (0,0);

Characteristics:

• Need to complete

LaTeX function code:
\textbf{Schaffer F6:} $f(x) = 0.5 + \frac{(sin^{2} \sqrt{x^2 + y^2}) - 0.5}{(1.0 + 0.001(x^2 + y^2))^2}$

Author:

Gary Pampara

See Also:

Serialized Form

Constructor Summary

Schaffer6()
Constructor.

Method Summary

double	evaluate(Vector input) Evaluate the function and return the evaluation.
Schaffer6	getClone() Create a cloned copy of the current object and return it.
Object	getMinimum() Initialise the function minimum value.

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

Schaffer6

public Schaffer6()

Constructor. Initialise the function to the initial domain of R(-100.0,100.0)^2

Method Detail

getClone

public Schaffer6 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()

Initialise the function minimum value.

Overrides:

getMinimum in class ContinuousFunction

Returns:

The minimum value as a Double object with value of 0.0

evaluate

public double evaluate(Vector input)

Evaluate the function and return the evaluation.

Specified by:

evaluate in class ContinuousFunction

Parameters:

x - The input vector to the function

Returns:

A double value representing the function evaluation