de.unidu.is.util
Class LogFunction

java.lang.Object
  de.unidu.is.util.Function
      de.unidu.is.util.LearnableFunction
          de.unidu.is.util.LogFunction

public class LogFunction

extends LearnableFunction

The logarithm function.

Since:

2004-10-25

Version:

$Revision: 1.4 $, $Date: 2005/02/28 22:27:55 $

Author:

Henrik Nottelmann

Field Summary

Fields inherited from class de.unidu.is.util.Function

parameters

Constructor Summary

LogFunction()

Method Summary

double	apply(double x) Apply the value x onto the function, and return the function value.
java.lang.String	getFunction() Returns the function in its textual representation.
java.lang.String[]	getParameterNames() Returns the parameter names which can be learned.

Methods inherited from class de.unidu.is.util.LearnableFunction

learn

Methods inherited from class de.unidu.is.util.Function

getParameter, getParameters, init, setParameters

Methods inherited from class java.lang.Object

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

Constructor Detail

LogFunction

public LogFunction()

Method Detail

apply

public double apply(double x)

Description copied from class: Function

Apply the value x onto the function, and return the function value.

Specified by:

apply in class Function

Parameters:

x - value to apply

Returns:

result for x

getParameterNames

public java.lang.String[] getParameterNames()

Description copied from class: LearnableFunction

Returns the parameter names which can be learned.

Specified by:

getParameterNames in class LearnableFunction

Returns:

parameter names

getFunction

public java.lang.String getFunction()

Description copied from class: LearnableFunction

Returns the function in its textual representation.

Specified by:

getFunction in class LearnableFunction

Returns:

textual representation of this function