lemur::retrieval::AbsoluteDiscountDocModel Class Reference

Absolute discout smoothing. More...

#include <SimpleKLDocModel.hpp>

Inheritance diagram for lemur::retrieval::AbsoluteDiscountDocModel:

List of all members.

Public Member Functions
	AbsoluteDiscountDocModel (lemur::api::DOCID_T docID, int dl, const lemur::langmod::UnigramLM &collectLM, const double *docProbMass, lemur::api::COUNT_T *uniqueTermCount, double discount, SimpleKLParameter::SmoothStrategy smthStrategy=SimpleKLParameter::INTERPOLATE)
virtual	~AbsoluteDiscountDocModel ()
virtual double	unseenCoeff () const
	a(d)
virtual double	seenProb (double termFreq, lemur::api::TERMID_T termID) const
	p(w|d), w seen
Private Attributes
double *	collectPr
lemur::api::COUNT_T *	uniqDocLen
double	delta

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Detailed Description

Absolute discout smoothing.

P(w|d) = (termFreq - delta)/|d|+ lambda*Pc(w) if seen or = lambda*Pc(w) if unseen where, lambda = unique-term-count-in-d*delta/|d|

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Constructor & Destructor Documentation

lemur::retrieval::AbsoluteDiscountDocModel::AbsoluteDiscountDocModel (  lemur::api::DOCID_T  docID, int  dl, const lemur::langmod::UnigramLM &  collectLM, const double *  docProbMass, lemur::api::COUNT_T *  uniqueTermCount, double  discount, SimpleKLParameter::SmoothStrategy  smthStrategy = SimpleKLParameter::INTERPOLATE )  [inline]

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

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Member Function Documentation

virtual double lemur::retrieval::AbsoluteDiscountDocModel::seenProb (  double  termFreq, lemur::api::TERMID_T  termID )  const [inline, virtual]

p(w|d), w seen Implements lemur::retrieval::SimpleKLDocModel.

virtual double lemur::retrieval::AbsoluteDiscountDocModel::unseenCoeff (   )  const [inline, virtual]

a(d) Implements lemur::retrieval::SimpleKLDocModel.

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Member Data Documentation

double* lemur::retrieval::AbsoluteDiscountDocModel::collectPr [private]

double lemur::retrieval::AbsoluteDiscountDocModel::delta [private]

lemur::api::COUNT_T* lemur::retrieval::AbsoluteDiscountDocModel::uniqDocLen [private]

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

• SimpleKLDocModel.hpp

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