edu.udo.cs.yale.operator.learner.kernel.evosvm
Class EpanechnikovKernel

java.lang.Object
  edu.udo.cs.yale.operator.learner.kernel.evosvm.Kernel
      edu.udo.cs.yale.operator.learner.kernel.evosvm.EpanechnikovKernel

public class EpanechnikovKernel
extends Kernel

Returns the value of the Epanechnikov kernel of both examples.

Version:

$Id: EpanechnikovKernel.java,v 1.3 2006/08/28 12:32:58 ingomierswa Exp $

Author:

Ingo Mierswa

Field Summary

private double	degree The parameter degree of the Epanechnikov kernel.
private double	sigma The parameter sigma of the Epanechnikov kernel.

Fields inherited from class edu.udo.cs.yale.operator.learner.kernel.evosvm.Kernel

KERNEL_DOT, KERNEL_EPANECHNIKOV, KERNEL_GAUSSIAN_COMBINATION, KERNEL_MULTIQUADRIC, KERNEL_POLYNOMIAL, KERNEL_RADIAL, KERNEL_SIGMOID, KERNEL_TYPES

Constructor Summary

EpanechnikovKernel()

Method Summary

double	calculateDistance(double[] x1, double[] x2) Calculates kernel value of vectors x and y.
double	getDegree()
double	getSigma()
int	getType() Must return one out of KERNEL_DOT, KERNEL_RADIAL, KERNEL_POLYNOMIAL, or KERNEL_SIGMOID.
void	readKernelParameters(java.io.ObjectInputStream in) Reads the values from the given stream.
void	setDegree(double degree)
void	setSigma(double sigma)
void	writeKernelParameters(java.io.ObjectOutputStream out) Writes the values into the given stream.

Methods inherited from class edu.udo.cs.yale.operator.learner.kernel.evosvm.Kernel

createKernel, createKernel, getDistance, getSum, init, innerProduct, norm2, readKernelData, writeKernelData

Methods inherited from class java.lang.Object

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

Field Detail

sigma

private double sigma

The parameter sigma of the Epanechnikov kernel.

degree

private double degree

The parameter degree of the Epanechnikov kernel.

Constructor Detail

EpanechnikovKernel

public EpanechnikovKernel()

Method Detail

getType

public int getType()

Description copied from class: Kernel

Must return one out of KERNEL_DOT, KERNEL_RADIAL, KERNEL_POLYNOMIAL, or KERNEL_SIGMOID.

Specified by:

getType in class Kernel

setSigma

public void setSigma(double sigma)

getSigma

public double getSigma()

getDegree

public double getDegree()

setDegree

public void setDegree(double degree)

calculateDistance

public double calculateDistance(double[] x1,
                                double[] x2)

Calculates kernel value of vectors x and y.

Specified by:

calculateDistance in class Kernel

readKernelParameters

public void readKernelParameters(java.io.ObjectInputStream in)
                          throws java.io.IOException

Reads the values from the given stream.

Specified by:

readKernelParameters in class Kernel

Throws:

java.io.IOException

writeKernelParameters

public void writeKernelParameters(java.io.ObjectOutputStream out)
                           throws java.io.IOException

Writes the values into the given stream.

Specified by:

writeKernelParameters in class Kernel

Throws:

java.io.IOException