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TFIDFRetMethod Class Reference

The TFIDF retrieval method with a few TF formula options. More...

#include <TFIDFRetMethod.hpp>

Inheritance diagram for TFIDFRetMethod:

List of all members.

Public Methods
	TFIDFRetMethod (Index &dbIndex,ScoreAccumulator &accumulator)
virtual	~TFIDFRetMethod ()
virtual TextQueryRep*	computeTextQueryRep (TextQuery &qry)
	compute the query representation for a text query (caller responsible for deleting the memory of the generated new instance).
virtual DocumentRep*	computeDocRep (int docID)
	compute the doc representation (caller responsible for deleting the memory of the generated new instance).
virtual ScoreFunction*	scoreFunc ()
	return the scoring function pointer.
virtual void	updateTextQuery (TextQueryRep &qryRep,DocIDSet &relDocs)
	Modify/update the query representation based on a set (presumably) relevant documents.
void	setDocTFParam (TFIDFParameter::WeightParam &docTFWeightParam)
void	setQueryTFParam (TFIDFParameter::WeightParam &queryTFWeightParam)
void	setFeedbackParam (TFIDFParameter::FeedbackParam &feedbackParam)
Static Public Methods
double	BM25TF (const double rawTF,const double k1,const double b,const double docLen,const double avgDocLen)
Protected Attributes
double*	idfV
ScoreFunction*	scFunc
Parameters
TFIDFParameter::WeightParam	qryTFParam
TFIDFParameter::WeightParam	docTFParam
TFIDFParameter::FeedbackParam	fbParam

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Detailed Description

The TFIDF retrieval method with a few TF formula options.

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Constructor & Destructor Documentation

TFIDFRetMethod::TFIDFRetMethod ( Index & dbIndex, ScoreAccumulator & accumulator )

TFIDFRetMethod::~TFIDFRetMethod ( ) [inline, virtual]

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Member Function Documentation

double TFIDFRetMethod::BM25TF ( const double rawTF, const double k1, const double b, const double docLen, const double avgDocLen ) [inline, static]

DocumentRep * TFIDFRetMethod::computeDocRep ( int docID ) [inline, virtual]

compute the doc representation (caller responsible for deleting the memory of the generated new instance). Reimplemented from TextQueryRetMethod.

TextQueryRep * TFIDFRetMethod::computeTextQueryRep ( TextQuery & qry ) [inline, virtual]

compute the query representation for a text query (caller responsible for deleting the memory of the generated new instance). Reimplemented from TextQueryRetMethod.

ScoreFunction * TFIDFRetMethod::scoreFunc ( ) [inline, virtual]

return the scoring function pointer. Reimplemented from TextQueryRetMethod.

void TFIDFRetMethod::setDocTFParam ( TFIDFParameter::WeightParam & docTFWeightParam ) [inline]

void TFIDFRetMethod::setFeedbackParam ( TFIDFParameter::FeedbackParam & feedbackParam ) [inline]

void TFIDFRetMethod::setQueryTFParam ( TFIDFParameter::WeightParam & queryTFWeightParam ) [inline]

void TFIDFRetMethod::updateTextQuery ( TextQueryRep & qryRep, DocIDSet & relDocs ) [virtual]

Modify/update the query representation based on a set (presumably) relevant documents. Reimplemented from TextQueryRetMethod.

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Member Data Documentation

TFIDFParameter::WeightParam TFIDFRetMethod::docTFParam [protected]

TFIDFParameter::FeedbackParam TFIDFRetMethod::fbParam [protected]

double * TFIDFRetMethod::idfV [protected]

TFIDFParameter::WeightParam TFIDFRetMethod::qryTFParam [protected]

ScoreFunction * TFIDFRetMethod::scFunc [protected]

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

• TFIDFRetMethod.hpp
• TFIDFRetMethod.cpp

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