org.apache.mahout.math.hadoop.similarity.cooccurrence.measures

Class LoglikelihoodSimilarity

java.lang.Object

org.apache.mahout.math.hadoop.similarity.cooccurrence.measures.CountbasedMeasure

org.apache.mahout.math.hadoop.similarity.cooccurrence.measures.LoglikelihoodSimilarity

All Implemented Interfaces:

VectorSimilarityMeasure

public class LoglikelihoodSimilarity
extends CountbasedMeasure

Field Summary

Fields inherited from interface org.apache.mahout.math.hadoop.similarity.cooccurrence.measures.VectorSimilarityMeasure

NO_NORM

Constructor Summary

Constructors

Constructor and Description
LoglikelihoodSimilarity()

Method Summary

Modifier and Type	Method and Description
double	similarity(double summedAggregations, double normA, double normB, int numberOfColumns)

Methods inherited from class org.apache.mahout.math.hadoop.similarity.cooccurrence.measures.CountbasedMeasure

aggregate, consider, norm, normalize

Methods inherited from class java.lang.Object

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

Constructor Detail

LoglikelihoodSimilarity

public LoglikelihoodSimilarity()

Method Detail

similarity

public double similarity(double summedAggregations,
                         double normA,
                         double normB,
                         int numberOfColumns)