Catalano.Statistics.Kernels

Class Circular

java.lang.Object

Catalano.Statistics.Kernels.Circular

All Implemented Interfaces:

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

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

Circular Kernel. The circular kernel comes from a statistics perspective. It is an example of an isotropic stationary kernel and is positive definite in R^2.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Circular(double sigma) Constructs a new Circular Kernel.

Method Summary

Modifier and Type	Method and Description
double	Function(double[] x, double[] y) The kernel function.
double	getSigma() Gets the kernel's sigma value.
void	setSigma(double sigma) Sets the kernel's sigma value.

Methods inherited from class java.lang.Object

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

Constructor Detail

Circular

public Circular(double sigma)

Constructs a new Circular Kernel.

Parameters:

sigma - Value for sigma.

Method Detail

getSigma

public double getSigma()

Gets the kernel's sigma value.

Returns:

Sigma value.

setSigma

public void setSigma(double sigma)

Sets the kernel's sigma value.

Parameters:

sigma - Sigma value.

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.