WeightBM25< T > Class Template Reference

The Weight class for BM25. More...

Inheritance diagram for WeightBM25< T >:

List of all members.

Public Member Functions
	WeightBM25 (ElementList< Word > *wordList, DocumentList *documentList)
	Initialise the class with the word and document statistics.
	WeightBM25 (void)
	Create an uninitialised class.
void	assignLists (ElementList< Word > *wordList, DocumentList *documentList)
	Provide the class with a new set of word and document statistics.
virtual void	documentWeightValue (T *triple, Word *word)
	Compute the document weight, given the triple and word.
void	termWeightValue (T *triple, Word *word)
	Compute the term weight of the triple.
void	assignTermWeightCW (Word *word)
	Compute the simple term weight and assign it to word.
void	assignRelevanceTermWeight (Word *word, int inRel, int totalRel)
	Compute the term weight given relevance feedback information.
void	noWeightValue (T *triple)
	Store the triple values, without weighting.
void	noWeightValue (float frequency, int position)
	Store the given values without weighting (used if we have no triple).
void	assignTermWeight (Word *word)
	Compute the term weight and assign it to word.
bool	operator< (WeightBM25 &triple)
	Compare frequencies of WeightBM25 classes.
void	operator*= (float mult)
	Multiply frequency by mult.
void	operator= (WeightBM25< T > &element)
	Assign the values from element to this object.
int	position (void)
	Return the position value.
float	value (void)
	Return the value value.
int	index (void)
	Return the index value.
Protected Member Functions
float	documentTermWeight (T *triple)
	Compute the document weight for the given triple.
Protected Attributes
ElementList< Word > *	_wordList
	The precomputed wordList containing word statistics.
DocumentList *	_documentList
	The precomputed documentList containing document statistics.
float	_frequency
	The weighted frequency.
int	_position
	The triple position.
int	_index
	The triple index.

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Detailed Description

template<typename T>
class WeightBM25< T >

The Weight class for BM25.

This class defines the operations needed to perform BM25 weighting when computing document scores for a given query.

Author

lapark

Revision

1.8.2.1

Date

2009/11/02 14:47:56

Id

WeightBM25.tcc,v 1.8.2.1 2009/11/02 14:47:56 lapark Exp

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

• src/WeightBM25.tcc