it.uniroma2.sag.kelp.kernel.pairs

Class KernelOnPairs

java.lang.Object

it.uniroma2.sag.kelp.kernel.Kernel

it.uniroma2.sag.kelp.kernel.KernelComposition

it.uniroma2.sag.kelp.kernel.pairs.KernelOnPairs

Direct Known Subclasses:

BestPairwiseAlignmentKernel, PairwiseProductKernel, PairwiseSumKernel, PreferenceKernel, UncrossedPairwiseProductKernel, UncrossedPairwiseSumKernel

public abstract class KernelOnPairs
extends KernelComposition

It is a kernel operating on ExamplePairs applying a simpler kernel to the pair elements

Author:

Simone Filice

Field Summary

Fields inherited from class it.uniroma2.sag.kelp.kernel.KernelComposition

baseKernel

Constructor Summary

Constructors

Constructor and Description
KernelOnPairs()

Method Summary

Methods

Modifier and Type	Method and Description
protected float	kernelComputation(Example exA, Example exB) Returns the kernel similarity between the given examples.
abstract float	kernelComputationOverPairs(Example exA1, Example exA2, Example exB1, Example exB2) Returns the kernel computation

Methods inherited from class it.uniroma2.sag.kelp.kernel.KernelComposition

getBaseKernel, setBaseKernel

Methods inherited from class it.uniroma2.sag.kelp.kernel.Kernel

disableCache, getKernelCache, getKernelComputations, getNumberOfHits, getNumberOfMisses, getSquaredNormCache, innerProduct, load, reset, save, setKernelCache, setSquaredNormCache, squaredNorm, squaredNormOfTheDifference

Methods inherited from class java.lang.Object

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

Constructor Detail

KernelOnPairs

public KernelOnPairs()

Method Detail

kernelComputation

protected float kernelComputation(Example exA,
                      Example exB)

Description copied from class: Kernel

Returns the kernel similarity between the given examples. This corresponds to the inner product in the implicit Reproducing Kernel Hilbert Space (RKHS)

Specified by:

kernelComputation in class Kernel

Parameters:

exA - the first example

exB - the second example

Returns:

the kernel operation between exA and exB

kernelComputationOverPairs

public abstract float kernelComputationOverPairs(Example exA1,
                               Example exA2,
                               Example exB1,
                               Example exB2)

Returns the kernel computation

Parameters:

exA1 - the first element of the first pair

exA2 - the second element of the first pair

exB1 - the first element of the second pair

exB2 - the second element of the second pair

Returns:

the result of the kernel computation