lemur::retrieval::DirichletPriorDocModel Class Reference

Bayesian smoothing with Dirichlet prior. More...

#include <SimpleKLDocModel.hpp>

Inheritance diagram for lemur::retrieval::DirichletPriorDocModel:

List of all members.

Public Member Functions
	DirichletPriorDocModel (lemur::api::DOCID_T docID, int dl, const lemur::langmod::UnigramLM &collectLM, const double *docProbMass, double priorWordCount, SimpleKLParameter::SmoothStrategy smthStrategy=SimpleKLParameter::INTERPOLATE)
virtual	~DirichletPriorDocModel ()
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	mu

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Detailed Description

Bayesian smoothing with Dirichlet prior.

      P(w|d) = (c(w;d)+mu*Pc(w))/(|d|+mu)
      

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Constructor & Destructor Documentation

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

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

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Member Function Documentation

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

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

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

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

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Member Data Documentation

double lemur::retrieval::DirichletPriorDocModel::mu [private]

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

• SimpleKLDocModel.hpp

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