latest version v1.9 - last update 24 Nov 2005

lti::costFunction Class Reference

Base class for all cost functions. More...

#include <ltiCostFunction.h>

Inheritance diagram for lti::costFunction:

[legend]Collaboration diagram for lti::costFunction:

[legend]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

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

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

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