Catalano.Statistics.Kernels

Class InverseMultiquadric

java.lang.Object

Catalano.Statistics.Kernels.InverseMultiquadric

All Implemented Interfaces:

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

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

Inverse Multiquadric Kernel. The inverse multiquadric kernel is only conditionally positive definite.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
InverseMultiquadric() Constructs a new Inverse Multiquadric Kernel.
InverseMultiquadric(double constant) Constructs a new Inverse Multiquadric Kernel.

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

InverseMultiquadric

public InverseMultiquadric()

Constructs a new Inverse Multiquadric Kernel.

InverseMultiquadric

public InverseMultiquadric(double constant)

Constructs a new Inverse Multiquadric Kernel.

Parameters:

constant - The constant term theta.

Method Detail

getConstant

public double getConstant()

Gets the kernel's constant value.

Returns:

Constant value.

setConstant

public void setConstant(double constant)

Sets the kernel's constant value.

Parameters:

constant - Constant 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.