Catalano.Statistics.Kernels

Class Multiquadric

java.lang.Object

Catalano.Statistics.Kernels.Multiquadric

All Implemented Interfaces:

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

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

Multiquadric Kernel. The multiquadric kernel is only conditionally positive-definite.

See Also:

Serialized Form

Constructor Summary

Constructors

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

Multiquadric

public Multiquadric()

Constructs a new Multiquadric Kernel.

Multiquadric

public Multiquadric(double constant)

Constructs a new Multiquadric Kernel.

Parameters:

constant - The constant kernel 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.