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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 (const Index &dbIndex, ScoreAccumulator &accumulator)
virtual	~TFIDFRetMethod ()
virtual TextQueryRep *	computeTextQueryRep (const TermQuery &qry)
	compute the query representation for a text query (caller responsible for deleting the memory of the generated new instance)
virtual DocumentRep *	computeDocRep (DOCID_T 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, const 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 (  const Index &    dbIndex, ScoreAccumulator &    accumulator )

virtual 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]

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

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

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

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

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

return the scoring function pointer Implements 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, const DocIDSet &    relDocs )  [virtual]

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