ivory.ffg.score

Interface ScoringFunction

All Known Implementing Classes:

BM25ScoringFunction, DirichletScoringFunction, TfIdfScoringFunction, TfScoringFunction

public interface ScoringFunction

Abstract scoring function.

Author:

Nima Asadi

Method Summary

Methods

Modifier and Type	Method and Description
float	computePhraseScore(int dl, int tf, GlobalStats stats) Computes phrase feature value.
float	computeTermScore(int term, int dl, int tf, GlobalStats stats) Computes term feature value.

Method Detail

computePhraseScore

float computePhraseScore(int dl,
                       int tf,
                       GlobalStats stats)

Computes phrase feature value.

Parameters:

dl - Document length

tf - Phrase frequency

stats - Global statistics

Returns:

Feature value

computeTermScore

float computeTermScore(int term,
                     int dl,
                     int tf,
                     GlobalStats stats)

Computes term feature value.

Parameters:

dl - Document length

tf - Term frequency

stats - Global statistics

Returns:

Feature value