lti::costFunction Class Reference

Base class for all cost functions. More...

#include <ltiCostFunction.h>

Inheritance diagram for lti::costFunction:

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Collaboration diagram for lti::costFunction:

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List of all members.

Public Member Functions
	costFunction ()
	costFunction (const costFunction &other)
virtual	~costFunction ()
virtual const char *	getTypeName () const
costFunction &	copy (const costFunction &other)
costFunction &	operator= (const costFunction &other)
virtual void	setSrc (const dmatrix &src, const ivector &srcIds)
virtual bool	apply (const ivector &in, double &dist)
virtual double	apply (const ivector &in)
virtual double	apply (const std::list< int > &in)
virtual bool	apply (const std::list< int > &in, double &value)=0
Protected Attributes
dmatrix	pSrc
ivector	pSrcIds

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Detailed Description

Base class for all cost functions.

The cost functions are used to evaluate feature subsets of data sets. These cost functions are used by the feature selectors.

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Constructor & Destructor Documentation

lti::costFunction::costFunction

(

)

default constructor

lti::costFunction::costFunction

(

const costFunction &

other

)

copy constructor

Parameters:

other

the object to be copied

virtual lti::costFunction::~costFunction

(

)

[virtual]

destructor

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Member Function Documentation

virtual bool lti::costFunction::apply	(	const std::list< int > &	in,
		double &	value
	)			[pure virtual]

computes the cost function with the given subset of features

Parameters:

	in	std::list with the features that should be inclueded for computing the function
	value	the result of the cost function

Returns:

true if apply successful or false otherwise.

Implemented in lti::bhattacharyyaDistOfSubset, lti::mahalanobisDistOfSubset, and lti::recognitionRateOfSubset.

virtual double lti::costFunction::apply

(

const std::list< int > &

in

)

[virtual]

computes the cost function with the given subset of features

Parameters:

in

std::list with the features that should be inclueded for computing the function

Returns:

the result of the cost function

virtual double lti::costFunction::apply

(

const ivector &

in

)

[virtual]

computes the cost function with the given subset of features

Parameters:

in

ivector with the features that should be included for computing the function

Returns:

the result of the cost function

virtual bool lti::costFunction::apply	(	const ivector &	in,
		double &	dist
	)			[virtual]

computes the cost function with the given subset of features

Parameters:

	in	ivector with the features that should be included.
	dist	the result of the cost function.

Returns:

true if apply successful or false otherwise.

costFunction& lti::costFunction::copy

(

const costFunction &

other

)

copy data of "other" functor.

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

Reimplemented from lti::functor.

Reimplemented in lti::bhattacharyyaDistOfSubset, lti::mahalanobisDistOfSubset, and lti::recognitionRateOfSubset.

virtual const char* lti::costFunction::getTypeName

(

)

const [virtual]

returns the name of this type ("costFunction")

Reimplemented from lti::functor.

Reimplemented in lti::bhattacharyyaDistOfSubset, lti::mahalanobisDistOfSubset, and lti::recognitionRateOfSubset.

costFunction& lti::costFunction::operator=

(

const costFunction &

other

)

alias for copy member

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

Reimplemented from lti::functor.

Reimplemented in lti::bhattacharyyaDistOfSubset, lti::mahalanobisDistOfSubset, and lti::recognitionRateOfSubset.

virtual void lti::costFunction::setSrc	(	const dmatrix &	src,
		const ivector &	srcIds
	)			[virtual]

Set the src data points and ids used for computation of the cost function.

Reimplemented in lti::bhattacharyyaDistOfSubset, lti::mahalanobisDistOfSubset, and lti::recognitionRateOfSubset.

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Member Data Documentation

dmatrix lti::costFunction::pSrc [protected]

the source data points

ivector lti::costFunction::pSrcIds [protected]

the src ids corresponding to the data points

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

• ltiCostFunction.h