org.biojava.stats.svm

Class PolynomialKernel

java.lang.Object

org.biojava.stats.svm.NestedKernel

org.biojava.stats.svm.PolynomialKernel

All Implemented Interfaces:

Serializable, SVMKernel

public class PolynomialKernel
extends NestedKernel

This kernel computes all possible products of order features in feature space. This is done by computing (a.k(i,j) + c)^order for some other kernel k that defines a dot product in some feature space.

Author:

Thomas Down, Matthew Pocock

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PolynomialKernel()
PolynomialKernel(SVMKernel nested, double order, double a, double c)

Method Summary

Modifier and Type	Method and Description
double	evaluate(Object a, Object b) Return the dot product of two vectors in an arbitrary feature space.
double	getConstant()
double	getMultiplier()
double	getOrder()
void	setConstant(double c)
void	setMultiplier(double m)
void	setOrder(double o)
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

PolynomialKernel

public PolynomialKernel()

PolynomialKernel

public PolynomialKernel(SVMKernel nested,
                        double order,
                        double a,
                        double c)

Method Detail

evaluate

public double evaluate(Object a,
                       Object b)

Description copied from interface: SVMKernel

Return the dot product of two vectors in an arbitrary feature space. In this implementation, the `vectors' can actually be arbitrary objects.

getOrder

public double getOrder()

setOrder

public void setOrder(double o)

getConstant

public double getConstant()

setConstant

public void setConstant(double c)

getMultiplier

public double getMultiplier()

setMultiplier

public void setMultiplier(double m)

toString

public String toString()

Overrides:

toString in class Object