lemur::retrieval::InQueryRetMethod Class Reference

The InQuery retrieval method for structured queries. More...

#include <InQueryRetMethod.hpp>

Inheritance diagram for lemur::retrieval::InQueryRetMethod:

List of all members.

Public Member Functions
	InQueryRetMethod (const lemur::api::Index &dbIndex, double belief, int fbTerms, double fbCoef, bool cacheIDF)
virtual	~InQueryRetMethod ()
virtual StructQueryRep *	computeStructQueryRep (const lemur::api::TermQuery &qry)
virtual lemur::api::DocumentRep *	computeDocRep (lemur::api::DOCID_T docID)
virtual lemur::api::ScoreFunction *	scoreFunc ()
	return the scoring function pointer
virtual void	updateStructQuery (StructQueryRep &qryRep, const lemur::api::DocIDSet &relDocs)
Private Attributes
double *	idfV
lemur::api::ScoreFunction *	scFunc
double	fbCoeff
int	fbTermCount
double	defaultBelief
int	docCount
double	docLengthAverage

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Detailed Description

The InQuery retrieval method for structured queries.

Implements the InQuery formulation of idf weighting and default belief value. Behavior can be modified by adjusting that value using the defaultBelief parameter. Provides feedback support in the same fashion as the LEMUR TFIDF method.

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Constructor & Destructor Documentation

lemur::retrieval::InQueryRetMethod::InQueryRetMethod (  const lemur::api::Index &  dbIndex, double  belief, int  fbTerms, double  fbCoef, bool  cacheIDF )

virtual lemur::retrieval::InQueryRetMethod::~InQueryRetMethod (   )  [inline, virtual]

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Member Function Documentation

virtual lemur::api::DocumentRep* lemur::retrieval::InQueryRetMethod::computeDocRep (  lemur::api::DOCID_T  docID  )  [inline, virtual]

compute the doc representation (caller responsible for deleting the memory of the generated new instance) Implements lemur::api::StructQueryRetMethod.

virtual StructQueryRep* lemur::retrieval::InQueryRetMethod::computeStructQueryRep (  const lemur::api::TermQuery &  qry  )  [inline, virtual]

virtual lemur::api::ScoreFunction* lemur::retrieval::InQueryRetMethod::scoreFunc (   )  [inline, virtual]

return the scoring function pointer Implements lemur::api::StructQueryRetMethod.

void lemur::retrieval::InQueryRetMethod::updateStructQuery (  StructQueryRep &  qryRep, const lemur::api::DocIDSet &  relDocs )  [virtual]

Create new structured query that is a weighted sum of the original query and the terms selected.

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Member Data Documentation

double lemur::retrieval::InQueryRetMethod::defaultBelief [private]

int lemur::retrieval::InQueryRetMethod::docCount [private]

double lemur::retrieval::InQueryRetMethod::docLengthAverage [private]

double lemur::retrieval::InQueryRetMethod::fbCoeff [private]

int lemur::retrieval::InQueryRetMethod::fbTermCount [private]

double* lemur::retrieval::InQueryRetMethod::idfV [private]

lemur::api::ScoreFunction* lemur::retrieval::InQueryRetMethod::scFunc [private]

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

• InQueryRetMethod.hpp
• InQueryRetMethod.cpp

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