lti::sequentialBackwardSearch Class Reference

This class implements the sequential backward search algorithm for feature selection. More...

#include <ltiSequentialBackwardSearch.h>

Inheritance diagram for lti::sequentialBackwardSearch:

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Collaboration diagram for lti::sequentialBackwardSearch:

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List of all members.

Public Member Functions
	sequentialBackwardSearch ()
	sequentialBackwardSearch (const sequentialBackwardSearch &other)
virtual	~sequentialBackwardSearch ()
virtual const char *	getTypeName () const
bool	apply (const dmatrix &src, const ivector &srcIds, dmatrix &dest)
sequentialBackwardSearch &	copy (const sequentialBackwardSearch &other)
sequentialBackwardSearch &	operator= (const sequentialBackwardSearch &other)
virtual functor *	clone () const
const parameters &	getParameters () const

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Detailed Description

This class implements the sequential backward search algorithm for feature selection.

It is based on the PlusRTakeAwayR algorithm with parameters r=1 and l=0. It starts with all features from the source data an in each iteration the least significant feature is deleted from the destination matrix until the predetermined number of features is reached.

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Constructor & Destructor Documentation

lti::sequentialBackwardSearch::sequentialBackwardSearch

(

)

default constructor

lti::sequentialBackwardSearch::sequentialBackwardSearch

(

const sequentialBackwardSearch &

other

)

copy constructor

Parameters:

other

the object to be copied

virtual lti::sequentialBackwardSearch::~sequentialBackwardSearch

(

)

[virtual]

destructor

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Member Function Documentation

bool lti::sequentialBackwardSearch::apply	(	const dmatrix &	src,
		const ivector &	srcIds,
		dmatrix &	dest
	)

selects the nbFeatures best features from src and puts them leave them in dest.

Parameters:

	src	dmatrix with the source data.
	srcIds	ivector with the ids corresponding to the point in src
	dest	dmatrix where the result will be left.

Returns:

true if apply successful or false otherwise.

virtual functor* lti::sequentialBackwardSearch::clone

(

)

const [virtual]

returns a pointer to a clone of this functor.

Reimplemented from lti::plusLTakeAwayR.

sequentialBackwardSearch& lti::sequentialBackwardSearch::copy

(

const sequentialBackwardSearch &

other

)

copy data of "other" functor.

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

Reimplemented from lti::plusLTakeAwayR.

const parameters& lti::sequentialBackwardSearch::getParameters

(

)

const

returns used parameters

Reimplemented from lti::plusLTakeAwayR.

virtual const char* lti::sequentialBackwardSearch::getTypeName

(

)

const [virtual]

returns the name of this type ("sequentialBackwardSearch")

Reimplemented from lti::plusLTakeAwayR.

sequentialBackwardSearch& lti::sequentialBackwardSearch::operator=

(

const sequentialBackwardSearch &

other

)

alias for copy member

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

Reimplemented from lti::plusLTakeAwayR.

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

• ltiSequentialBackwardSearch.h