com.numericalmethod.suanshu.stats.regression.linear.glm.distribution.link
Class Inverse

java.lang.Object
  com.numericalmethod.suanshu.stats.regression.linear.glm.distribution.link.Inverse

All Implemented Interfaces:

LinkFunction

public class Inverse
extends java.lang.Object
implements LinkFunction

This class represents the link function:

 g(x) = 1/x
 

See Also:

GeneralizedLinearModel

Constructor Summary

Inverse()

Method Summary

double	derivative(double x) Derivative of the link function, i.e., g'(x).
double	inverse(double x) Inverse of the link function, i.e., g-1(x).

Methods inherited from class java.lang.Object

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

Constructor Detail

Inverse

public Inverse()

Method Detail

inverse

public double inverse(double x)

Description copied from interface: LinkFunction

Inverse of the link function, i.e., g-1(x).

Specified by:

inverse in interface LinkFunction

Parameters:

x - x

Returns:

g-1(x)

derivative

public double derivative(double x)

Derivative of the link function, i.e., g'(x).

          -1
 g'(x) = ----
          x2
 

Specified by:

derivative in interface LinkFunction

Parameters:

x -

Returns:

g'(x)