Ranking function that returns the TF score - used for term frequency scaling into the quantized range. More...

Public Member Functions
	ranking_function_none ()
	Constructor.

	~ranking_function_none ()
	Destructor.

forceinline void	compute_idf_component (compress_integer::integer document_frequency, compress_integer::integer documents_in_collection)
	Called once per term (per query). Computes the IDF component of the ranking function and stores it internally. More...

forceinline void	compute_tf_component (index_postings_impact::impact_type term_frequency)
	Compute and store internally the term-frequency based component of the ranking function (useful when postings lists are impact ordered) More...

forceinline double	compute_score (compress_integer::integer document_id, index_postings_impact::impact_type term_frequency)
	Return the term frequency. More...

Detailed Description

Ranking function that returns the TF score - used for term frequency scaling into the quantized range.

Member Function Documentation

forceinline void JASS::ranking_function_none::compute_idf_component	(	compress_integer::integer	document_frequency,
		compress_integer::integer	documents_in_collection
	)

inline

Called once per term (per query). Computes the IDF component of the ranking function and stores it internally.

Parameters

document_frequency	[in] the number of documents that contain this term.
documents_in_collection	[in] the number of documents in the collection.

forceinline double JASS::ranking_function_none::compute_score	(	compress_integer::integer	document_id,
		index_postings_impact::impact_type	term_frequency
	)

inline

Return the term frequency.

Parameters

document_id	[in] The ID of the document
term_frequency	[in] The number of times the term occurs in the document.

forceinline void JASS::ranking_function_none::compute_tf_component ( index_postings_impact::impact_type term_frequency )

inline

Compute and store internally the term-frequency based component of the ranking function (useful when postings lists are impact ordered)

Parameters

term_frequency [in] The number of times the term occurs in the document.

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