Catalano.Statistics.Kernels

Class Bessel

java.lang.Object

Catalano.Statistics.Kernels.Bessel

All Implemented Interfaces:

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

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

Bessel Kernel. The Bessel kernel is well known in the theory of function spaces of fractional smoothness.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Bessel(int order, double sigma) Constructs a new Bessel Kernel.

Method Summary

Modifier and Type	Method and Description
double	Function(double[] x, double[] y) The kernel function.
int	getOrder() Gets the order of the Bessel function.
double	getSigma() Gets the sigma constant for this kernel.
void	setOrder(int order) Sets the order of the Bessel function.
void	setSigma(double sigma) Sets the sigma constant for this kernel.

Methods inherited from class java.lang.Object

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

Constructor Detail

Bessel

public Bessel(int order,
              double sigma)

Constructs a new Bessel Kernel.

Parameters:

order - The order for the Bessel function.

sigma - The value for sigma.

Method Detail

getOrder

public int getOrder()

Gets the order of the Bessel function.

Returns:

Order of the bessel function.

setOrder

public void setOrder(int order)

Sets the order of the Bessel function.

Parameters:

order - Order of the bessel function.

getSigma

public double getSigma()

Gets the sigma constant for this kernel.

Returns:

Sigma.

setSigma

public void setSigma(double sigma)

Sets the sigma constant for this kernel.

Parameters:

sigma - Sigma.

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.