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ScoreFunction Class Reference

Abstract interface for retrieval function with a default implementation (dot product). More...

#include <ScoreFunction.hpp>

Inheritance diagram for ScoreFunction:

List of all members.

Public Methods
virtual double	matchedTermWeight (QueryTerm *qTerm,TextQueryRep *qRep,DocInfo *info,DocumentRep *dRep)
	compute the score contribution of a matched term.
virtual double	adjustedScore (double origScore,TextQueryRep *qRep,DocumentRep *dRep)
	score adjustment (e.g., appropriate length normalization).

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Detailed Description

Abstract interface for retrieval function with a default implementation (dot product).

This is an abstract interface for a retrieval function that can be written as involving a sum over all the matched terms between a query and a document. Many retrieval functions can be rewritten in this form. Please see the API documentation on the Lemur web site for more information about the generic scoring function form.

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Member Function Documentation

double ScoreFunction::adjustedScore ( double origScore, TextQueryRep * qRep, DocumentRep * dRep ) [inline, virtual]

score adjustment (e.g., appropriate length normalization). Reimplemented in SimpleKLScoreFunc.

double ScoreFunction::matchedTermWeight ( QueryTerm * qTerm, TextQueryRep * qRep, DocInfo * info, DocumentRep * dRep ) [inline, virtual]

compute the score contribution of a matched term. Reimplemented in OkapiScoreFunc, and SimpleKLScoreFunc.

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

• ScoreFunction.hpp

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