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

Class PearsonCorrelationSimilarity

java.lang.Object

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

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

All Implemented Interfaces:

VectorSimilarityMeasure

public class PearsonCorrelationSimilarity
extends CosineSimilarity

Field Summary

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

NO_NORM

Constructor Summary

Constructors

Constructor and Description
PearsonCorrelationSimilarity()

Method Summary

Modifier and Type	Method and Description
Vector	normalize(Vector vector)

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

aggregate, consider, norm, similarity

Methods inherited from class java.lang.Object

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

Constructor Detail

PearsonCorrelationSimilarity

public PearsonCorrelationSimilarity()

Method Detail

normalize

public Vector normalize(Vector vector)

Specified by:

normalize in interface VectorSimilarityMeasure

Overrides:

normalize in class CosineSimilarity