Catalano.Statistics.Kernels

Class Pearson

java.lang.Object

Catalano.Statistics.Kernels.Pearson

All Implemented Interfaces:

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

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

Pearson VII universal kernel (PUK).

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Pearson() Constructs a new Pearson VII universal kernel.
Pearson(double omega, double sigma) Constructs a new Pearson VII universal kernel.

Method Summary

Modifier and Type	Method and Description
double	Function(double[] x, double[] y) The kernel function.
double	getOmega() Get the omega parameter.
double	getSigma() Get the sigma parameter.
void	setOmega(double omega) Set the omega parameter.
void	setSigma(double sigma) Set the sigma parameter.

Methods inherited from class java.lang.Object

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

Constructor Detail

Pearson

public Pearson()

Constructs a new Pearson VII universal kernel.

Pearson

public Pearson(double omega,
               double sigma)

Constructs a new Pearson VII universal kernel.

Parameters:

omega - The Pearson's omega parameter w. Default is 1.

sigma - The Pearson's sigma parameter s. Default is 1.

Method Detail

getOmega

public double getOmega()

Get the omega parameter.

Returns:

Omega parameter.

setOmega

public void setOmega(double omega)

Set the omega parameter.

Parameters:

omega - Omega parameter.

getSigma

public double getSigma()

Get the sigma parameter.

Returns:

Sigma parameter.

setSigma

public void setSigma(double sigma)

Set the sigma parameter.

Parameters:

sigma - Sigma parameter.

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.