lti::kernelFunctor< T > Class Template Reference

This class defines a kernel functor. More...

#include <ltiKernelFunctor.h>

Inheritance diagram for lti::kernelFunctor< T >:

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Collaboration diagram for lti::kernelFunctor< T >:

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List of all members.

Classes
class	parameters
	the parameters for the class distanceFunctor More...
Public Member Functions
	kernelFunctor ()
	kernelFunctor (const kernelFunctor< T > &other)
virtual	~kernelFunctor ()
virtual const char *	getTypeName () const
virtual T	apply (const vector< T > &a, const vector< T > &b) const =0
kernelFunctor< T > &	copy (const kernelFunctor< T > &other)
virtual functor *	clone () const
const parameters &	getParameters () const

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Detailed Description

template<class T>
class lti::kernelFunctor< T >

This class defines a kernel functor.

A kernel is sort of an inner product, but needs not be linear. It takes two vectors and returns a scalar. The most simple kernel is the canonical scalar product.

See also:

linearKernel, sigmoidKernel, radialKernel, polynomialKernel

For more information on kernel machines see here.

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Constructor & Destructor Documentation

template<class T>

lti::kernelFunctor< T >::kernelFunctor

(

)

default constructor

template<class T>

lti::kernelFunctor< T >::kernelFunctor

(

const kernelFunctor< T > &

other

)

copy constructor

Parameters:

other

the object to be copied

template<class T>

virtual lti::kernelFunctor< T >::~kernelFunctor

(

)

[virtual]

destructor

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Member Function Documentation

template<class T>

virtual T lti::kernelFunctor< T >::apply	(	const vector< T > &	a,
		const vector< T > &	b
	)			const [pure virtual]

calculate the distance between the vectors a and b

Parameters:

	a	the first vector<T>
	b	the second vector<T>

Returns:

the kernel function value of the vectors

Implemented in lti::linearKernel, lti::polynomialKernel, lti::radialKernel, and lti::sigmoidKernel.

template<class T>

virtual functor* lti::kernelFunctor< T >::clone

(

)

const [virtual]

returns a pointer to a clone of this functor.

Implements lti::functor.

Reimplemented in lti::linearKernel, lti::polynomialKernel, lti::radialKernel, and lti::sigmoidKernel.

template<class T>

kernelFunctor<T>& lti::kernelFunctor< T >::copy

(

const kernelFunctor< T > &

other

)

copy data of "other" functor.

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

Reimplemented from lti::functor.

template<class T>

const parameters& lti::kernelFunctor< T >::getParameters

(

)

const

returns used parameters

Reimplemented from lti::functor.

Reimplemented in lti::linearKernel, lti::polynomialKernel, lti::radialKernel, and lti::sigmoidKernel.

template<class T>

virtual const char* lti::kernelFunctor< T >::getTypeName

(

)

const [virtual]

returns the name of this type ("kernelFunctor")

Reimplemented from lti::functor.

Reimplemented in lti::linearKernel, lti::polynomialKernel, lti::radialKernel, and lti::sigmoidKernel.

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The documentation for this class was generated from the following file:

• ltiKernelFunctor.h