fr.lip6.kernel
Class CMKernel<T>

java.lang.Object
  fr.lip6.kernel.Kernel<T>
      fr.lip6.kernel.CMKernel<T>

Type Parameters:

T -

All Implemented Interfaces:

java.io.Serializable

public class CMKernel<T>
extends Kernel<T>

Generic kernel with a matrix based cache policy.
The Gram matrix associated with an list of TrainingSample is cached for future requests.

Author:

dpicard

See Also:

Serialized Form

Field Summary

Fields inherited from class fr.lip6.kernel.Kernel

name

Constructor Summary

CMKernel(Kernel<T> k)
Default constructor

Method Summary

double[][]	getKernelMatrix(java.util.ArrayList<TrainingSample<T>> e) return the Gram Matrix of this kernel computed on given samples
double	valueOf(T t1) kernel similarity to zero
double	valueOf(T t1, T t2) compute the kernel similarity between two element of input space

Methods inherited from class fr.lip6.kernel.Kernel

getNormalizedKernelMatrix, normalizedValueOf, setName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CMKernel

public CMKernel(Kernel<T> k)

Default constructor

Parameters:

k - the kernel to cache

Method Detail

getKernelMatrix

public double[][] getKernelMatrix(java.util.ArrayList<TrainingSample<T>> e)

Description copied from class: Kernel

return the Gram Matrix of this kernel computed on given samples

Overrides:

getKernelMatrix in class Kernel<T>

Returns:

double[][] containing similarities in the order of the e.

valueOf

public double valueOf(T t1,
                      T t2)

Description copied from class: Kernel

compute the kernel similarity between two element of input space

Specified by:

valueOf in class Kernel<T>

Parameters:

t1 - first element

t2 - second element

Returns:

the kernel value

valueOf

public double valueOf(T t1)

Description copied from class: Kernel

kernel similarity to zero

Specified by:

valueOf in class Kernel<T>

Parameters:

t1 - the element to compute the similarity to zero