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AbsoluteDiscountDocModel Class Reference

Absolute discout smoothing. More...

#include <SimpleKLDocModel.hpp>

Inheritance diagram for AbsoluteDiscountDocModel:

SimpleKLDocModel DocumentRep List of all members.

Public Methods

 AbsoluteDiscountDocModel (int docID, int dl, const UnigramLM &collectLM, const double *docProbMass, int *uniqueTermCount, double discount, SimpleKLParameter::SmoothStrategy smthStrategy=SimpleKLParameter::INTERPOLATE)
virtual ~AbsoluteDiscountDocModel ()
virtual double unseenCoeff () const
 a(d)

virtual double seenProb (double termFreq, int termID) const
 p(w|d), w seen

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|

Constructor & Destructor Documentation

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

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

Member Function Documentation

virtual double AbsoluteDiscountDocModel::seenProb (  double    termFreq,
int    termID
)  const [inline, virtual]
 

p(w|d), w seen

Implements SimpleKLDocModel.

virtual double AbsoluteDiscountDocModel::unseenCoeff (    )  [inline, virtual]
 

a(d)

Implements SimpleKLDocModel.

The documentation for this class was generated from the following file:
Generated on Fri Jul 2 16:25:40 2004 for Lemur Toolkit by doxygen1.2.18