Catalano.Statistics.Kernels

Class Polynomial

java.lang.Object

Catalano.Statistics.Kernels.Polynomial

All Implemented Interfaces:

IMercerKernel<double[]>, java.io.Serializable

public class Polynomial
extends java.lang.Object
implements IMercerKernel<double[]>

Polynomial Kernel.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Polynomial() Constructs a new Polynomial Kernel.
Polynomial(int degree) Constructs a new Polynomial Kernel.
Polynomial(int degree, double constant) Constructs a new Polynomial Kernel.

Method Summary

Modifier and Type	Method and Description
double	Function(double[] x, double[] y) The kernel function.
double	getConstant() Get the polynomial constant term.
int	getDegree() Get the degree of the polynomial kernel.
void	setConstant(double constant) Set the polynomial constant term.
void	setDegree(int degree) Set the degree of the polynomial kernel.

Methods inherited from class java.lang.Object

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

Constructor Detail

Polynomial

public Polynomial()

Constructs a new Polynomial Kernel.

Polynomial

public Polynomial(int degree)

Constructs a new Polynomial Kernel.

Parameters:

degree - Polynomial degree.

Polynomial

public Polynomial(int degree,
                  double constant)

Constructs a new Polynomial Kernel.

Parameters:

degree - Polynomial degree.

constant - Polynomial constant term.

Method Detail

getDegree

public int getDegree()

Get the degree of the polynomial kernel.

Returns:

Degree.

setDegree

public void setDegree(int degree)

Set the degree of the polynomial kernel.

Parameters:

degree - Degree.

getConstant

public double getConstant()

Get the polynomial constant term.

Returns:

Polynomial constant term.

setConstant

public void setConstant(double constant)

Set the polynomial constant term.

Parameters:

constant - Constant term.

Function

public double Function(double[] x,
                       double[] y)

Description copied from interface: IMercerKernel

The kernel function.

Specified by:

Function in interface IMercerKernel<double[]>

Parameters:

x - Vector x in input space.

y - Vector y in input space.

Returns:

Dot product in feature (kernel) space.