lti::sigmoidKernel Class Reference

This class defines a "sigmoid" kernel functor. More...

#include <ltiSigmoidKernel.h>

Inheritance diagram for lti::sigmoidKernel:

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List of all members.

Classes
class	parameters
	the parameters for the class distanceFunctor More...
Public Member Functions
	sigmoidKernel ()
	sigmoidKernel (const sigmoidKernel &other)
virtual const char *	getTypeName () const
virtual double	apply (const vector< double > &a, const vector< double > &b) const
virtual functor *	clone () const
const parameters &	getParameters () const

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Detailed Description

This class defines a "sigmoid" kernel functor.

It is used in Support Vector Machines (lti::svm) to simulate a multilayer perceptron.

Here is . The terms (kappa) and (theta) are given through the parameters object, and only some of values satisfy the Mercer's theorem.

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Constructor & Destructor Documentation

lti::sigmoidKernel::sigmoidKernel

(

)

default constructor

lti::sigmoidKernel::sigmoidKernel

(

const sigmoidKernel &

other

)

copy constructor

Parameters:

other

the object to be copied

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Member Function Documentation

virtual double lti::sigmoidKernel::apply	(	const vector< double > &	a,
		const vector< double > &	b
	)			const [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

Implements lti::kernelFunctor< double >.

virtual functor* lti::sigmoidKernel::clone

(

)

const [virtual]

returns a pointer to a clone of this functor.

Reimplemented from lti::kernelFunctor< double >.

const parameters& lti::sigmoidKernel::getParameters

(

)

const

returns used parameters

Reimplemented from lti::kernelFunctor< double >.

virtual const char* lti::sigmoidKernel::getTypeName

(

)

const [virtual]

returns the name of this type ("sigmoidKernel")

Reimplemented from lti::kernelFunctor< double >.

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

• ltiSigmoidKernel.h