Class for polynomial kernel calculations. More...

#include <yat/classifier/PolynomialKernelFunction.h>

Inheritance diagram for theplu::yat::classifier::PolynomialKernelFunction:

Public Member Functions
	PolynomialKernelFunction (int=1)

virtual	~PolynomialKernelFunction (void)

double	operator() (const DataLookup1D &a1, const DataLookup1D &a2) const

double	operator() (const DataLookup1D &x, const DataLookupWeighted1D &y) const

double	operator() (const DataLookupWeighted1D &x, const DataLookupWeighted1D &y) const

double	operator() (const DataLookupWeighted1D &vec_w, const DataLookup1D &vec) const

Detailed Description

Class for polynomial kernel calculations.

Constructor & Destructor Documentation

theplu::yat::classifier::PolynomialKernelFunction::PolynomialKernelFunction ( int = 1 )

Constructor taking the order of the polynomial as input. Default is order=1 yielding the linear kernel function.

virtual theplu::yat::classifier::PolynomialKernelFunction::~PolynomialKernelFunction ( void )

inlinevirtual

Destructor

Member Function Documentation

double theplu::yat::classifier::PolynomialKernelFunction::operator()	(	const DataLookup1D &	a1,
		const DataLookup1D &	a2
	)		const

virtual

returning the scalar product of two vectors in feature space using the polynomial kernel.

Returns: If order is larger than one: $(1+x \cdot y)^{order}$
If order is one (linear): $x \cdot y$

Implements theplu::yat::classifier::KernelFunction.

double theplu::yat::classifier::KernelFunction::operator()	(	const DataLookupWeighted1D &	vec_w,
		const DataLookup1D &	vec
	)		const

inlineinherited

Returns: scalar product of two vector in feature space.

double theplu::yat::classifier::PolynomialKernelFunction::operator()	(	const DataLookup1D &	x,
		const DataLookupWeighted1D &	y
	)		const

virtual

Returns: If order is larger than one: $(1+x \cdot y)^{order}$
If order is one (linear): $\sum w_yxy$

Implements theplu::yat::classifier::KernelFunction.

double theplu::yat::classifier::PolynomialKernelFunction::operator()	(	const DataLookupWeighted1D &	x,
		const DataLookupWeighted1D &	y
	)		const

virtual

returning the scalar product of two vectors in feature space using the polynomial kernel with weights. Having all weights equal to unity yields the same as non-weighted version.

Returns: If order is larger than one: $(1+x \cdot y)^{order}$
If order is one (linear): $\sum w_xw_yxy$

Implements theplu::yat::classifier::KernelFunction.

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

yat/classifier/PolynomialKernelFunction.h

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation