lti::bhattacharyyaDistance Class Reference

Computes the bhattacharyya distance of two distributions. More...

#include <ltiBhattacharyyaDistance.h>

Inheritance diagram for lti::bhattacharyyaDistance:

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Collaboration diagram for lti::bhattacharyyaDistance:

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List of all members.

Public Member Functions
	bhattacharyyaDistance ()
	bhattacharyyaDistance (const bhattacharyyaDistance &other)
virtual	~bhattacharyyaDistance ()
virtual const char *	getTypeName () const
double	apply (const dmatrix &cluster1, const dmatrix &cluster2) const
bool	apply (const dmatrix &cluster1, const dmatrix &cluster2, double &distance) const
double	apply (const dvector &centroid1, const dmatrix &cov1, const dvector &centroid2, const dmatrix &cov2) const
bool	apply (const dvector &centroid1, const dmatrix &cov1, const dvector &centroid2, const dmatrix &cov2, double &distance) const
bhattacharyyaDistance &	copy (const bhattacharyyaDistance &other)
bhattacharyyaDistance &	operator= (const bhattacharyyaDistance &other)
virtual functor *	clone () const
const parameters &	getParameters () const

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Detailed Description

Computes the bhattacharyya distance of two distributions.

Either two matrices with the distributions, with each row representing a data point, or the means and the covarianz matrices of both distributions are given the the functor.

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Constructor & Destructor Documentation

lti::bhattacharyyaDistance::bhattacharyyaDistance

(

)

default constructor

lti::bhattacharyyaDistance::bhattacharyyaDistance

(

const bhattacharyyaDistance &

other

)

copy constructor

Parameters:

other

the object to be copied

virtual lti::bhattacharyyaDistance::~bhattacharyyaDistance

(

)

[virtual]

destructor

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Member Function Documentation

bool lti::bhattacharyyaDistance::apply	(	const dvector &	centroid1,
		const dmatrix &	cov1,
		const dvector &	centroid2,
		const dmatrix &	cov2,
		double &	distance
	)			const

compute the distance between the two distributions

Parameters:

	centroid1	dvector with the first centroid
	cov1	dmatrix with the covariance matrix of distribution 1
	centroid2	dvector with the second centroid
	cov2	dmatrix with the covariance matrix of distribution 2
	distance	the result will be left here

Returns:

true if apply successful or false otherwise.

double lti::bhattacharyyaDistance::apply	(	const dvector &	centroid1,
		const dmatrix &	cov1,
		const dvector &	centroid2,
		const dmatrix &	cov2
	)			const

compute the distance between the two distributions

Parameters:

	centroid1	dvector with the first centroid
	cov1	dmatrix with the covariance matrix of distribution 1
	centroid2	dvector with the second centroid
	cov2	dmatrix with the covariance matrix of distribution 2

Returns:

the distance

bool lti::bhattacharyyaDistance::apply	(	const dmatrix &	cluster1,
		const dmatrix &	cluster2,
		double &	distance
	)			const

compute the distance between the two distributions

Parameters:

	cluster1	dmatrix with the first distribution
	cluster2	dmatrix with the second one
	distance	the result will be left here

Returns:

true if apply successful or false otherwise.

double lti::bhattacharyyaDistance::apply	(	const dmatrix &	cluster1,
		const dmatrix &	cluster2
	)			const

compute the distance between the two distributions

Parameters:

	cluster1	dmatrix with the first distribution
	cluster2	dmatrix with the second one

Returns:

the distance

virtual functor* lti::bhattacharyyaDistance::clone

(

)

const [virtual]

returns a pointer to a clone of this functor.

Implements lti::functor.

bhattacharyyaDistance& lti::bhattacharyyaDistance::copy

(

const bhattacharyyaDistance &

other

)

copy data of "other" functor.

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

Reimplemented from lti::functor.

const parameters& lti::bhattacharyyaDistance::getParameters

(

)

const

returns used parameters

Reimplemented from lti::functor.

virtual const char* lti::bhattacharyyaDistance::getTypeName

(

)

const [virtual]

returns the name of this type ("bhattacharyyaDistance")

Reimplemented from lti::linearAlgebraFunctor.

bhattacharyyaDistance& lti::bhattacharyyaDistance::operator=

(

const bhattacharyyaDistance &

other

)

alias for copy member

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

Reimplemented from lti::functor.

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

• ltiBhattacharyyaDistance.h