com.wcohen.secondstring
Class JelinekMercerJS

java.lang.Object
  |
  +--com.wcohen.secondstring.AbstractStringDistance
        |
        +--com.wcohen.secondstring.JensenShannonDistance
              |
              +--com.wcohen.secondstring.JelinekMercerJS

All Implemented Interfaces:

StringDistance

public class JelinekMercerJS

extends JensenShannonDistance

Jensen-Shannon distance of two unigram language models, smoothed using Jelinek-Mercer mixture model.

Constructor Summary

JelinekMercerJS()

JelinekMercerJS(Tokenizer tokenizer, double lambda)

Method Summary

double	getLambda()
static void	main(java.lang.String[] argv)
void	setLambda(double lambda)
void	setLambda(java.lang.Double lambda)
protected double	smoothedProbability(Token tok, double freq, double totalWeight) smoothed probability of the token
java.lang.String	toString()

Methods inherited from class com.wcohen.secondstring.JensenShannonDistance

accumulateStatistics, backgroundProb, explainScore, prepare, score

Methods inherited from class com.wcohen.secondstring.AbstractStringDistance

doMain, explainScore, score

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

JelinekMercerJS

public JelinekMercerJS(Tokenizer tokenizer,
                       double lambda)

JelinekMercerJS

public JelinekMercerJS()

Method Detail

getLambda

public double getLambda()

setLambda

public void setLambda(double lambda)

setLambda

public void setLambda(java.lang.Double lambda)

smoothedProbability

protected double smoothedProbability(Token tok,
                                     double freq,
                                     double totalWeight)

smoothed probability of the token

Specified by:

smoothedProbability in class JensenShannonDistance

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

main

public static void main(java.lang.String[] argv)