de.jstacs.algorithms.optimization

Class NegativeFunction

java.lang.Object

de.jstacs.algorithms.optimization.NegativeFunction

All Implemented Interfaces:

Function

public class NegativeFunction
extends Object
implements Function

The negative function -f for a given Function f.

Author:

Jens Keilwagen

Constructor Summary

Constructors

Constructor and Description
NegativeFunction(Function f) Creates the Function f for which -f should be calculated.

Method Summary

Modifier and Type	Method and Description
double	evaluateFunction(double[] x) Evaluates the function at a certain vector (in mathematical sense) x.
int	getDimensionOfScope() Returns the dimension of the scope of the Function.

Methods inherited from class java.lang.Object

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

Constructor Detail

NegativeFunction

public NegativeFunction(Function f)

Creates the Function f for which -f should be calculated.

Parameters:

f - the Function

Method Detail

evaluateFunction

public double evaluateFunction(double[] x)
                        throws DimensionException,
                               EvaluationException

Description copied from interface: Function

Evaluates the function at a certain vector (in mathematical sense) x.

Specified by:

evaluateFunction in interface Function

Parameters:

x - the current vector

Returns:

the evaluation of the function

Throws:

DimensionException - if dim(x) != n, with

EvaluationException - if there was something wrong during the evaluation of the function

getDimensionOfScope

public int getDimensionOfScope()

Description copied from interface: Function

Returns the dimension of the scope of the Function.

Specified by:

getDimensionOfScope in interface Function

Returns:

the dimension of the scope: n with