dragon.ir.clustering.docdistance

Class CosineDocDistance

java.lang.Object

dragon.ir.clustering.docdistance.AbstractDocDistance

dragon.ir.clustering.docdistance.CosineDocDistance

All Implemented Interfaces:

DocDistance

public class CosineDocDistance
extends AbstractDocDistance

Cosine document similarity/distance measure

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

Fields inherited from class dragon.ir.clustering.docdistance.AbstractDocDistance

featureFilter, matrix

Constructor Summary

Constructors

Constructor and Description
CosineDocDistance(SparseMatrix doctermMatrix)

Method Summary

Modifier and Type	Method and Description
double	getDistance(IRDoc first, IRDoc second)

Methods inherited from class dragon.ir.clustering.docdistance.AbstractDocDistance

getFeatureFilter, setFeatureFilter

Methods inherited from class java.lang.Object

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

Constructor Detail

CosineDocDistance

public CosineDocDistance(SparseMatrix doctermMatrix)

Method Detail

getDistance

public double getDistance(IRDoc first,
                          IRDoc second)

Parameters:

first - the first document

second - the second document

Returns:

the distance of the given document pair