org.biojava.stats.svm
Class DiagonalAddKernel

java.lang.Object
  org.biojava.stats.svm.NestedKernel
      org.biojava.stats.svm.DiagonalAddKernel

All Implemented Interfaces:

Serializable, SVMKernel

public class DiagonalAddKernel
extends NestedKernel

Adds a class specific constant to k(x, x).

Author:

Matthew Pocock

See Also:

Serialized Form

Constructor Summary

DiagonalAddKernel()

Method Summary

void	addNeg(Object o)
void	addPos(Object o)
double	evaluate(Object a, Object b) Return the dot product of a, b.
double	getLambda() Retrieve the scale factor.
void	setLambda(double l) Set the scale factor.
String	toString()

Methods inherited from class org.biojava.stats.svm.NestedKernel

getNestedKernel, setNestedKernel

Methods inherited from class java.lang.Object

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

Constructor Detail

DiagonalAddKernel

public DiagonalAddKernel()

Method Detail

addPos

public void addPos(Object o)

addNeg

public void addNeg(Object o)

setLambda

public void setLambda(double l)

Set the scale factor.

Parameters:

l - the new scale factor

getLambda

public double getLambda()

Retrieve the scale factor.

Returns:

the current scale factor

evaluate

public double evaluate(Object a,
                       Object b)

Return the dot product of a, b.

This is equal to k(a, b) + d(a, b) * ||class(a)|| / (||class||) where d(a, b) is zero if a != b, and 1 if a == b. class(a) is the set of all items in the same class as a. class is all items with a classification.

toString

public String toString()

Overrides:

toString in class Object