tml.utils
Class DistanceLib

java.lang.Object
  tml.utils.DistanceLib

public class DistanceLib
extends java.lang.Object

A library for calculating the semantic distance between instances.

Author:

Stephen O'Rourke

Nested Class Summary

static class

DistanceLib.DistanceMeasure

Constructor Summary

DistanceLib()

Method Summary

static double	cosine(weka.core.Instance inst1, weka.core.Instance inst2)
static double	distance(DistanceLib.DistanceMeasure distanceMeasure, weka.core.Instance inst1, weka.core.Instance inst2)
static double	euclidean(weka.core.Instance inst1, weka.core.Instance inst2)
static double	jaccard(weka.core.Instance inst1, weka.core.Instance inst2)
static double	jensenShannon(weka.core.Instance inst1, weka.core.Instance inst2)
static double	kullbackLeibler(weka.core.Instance inst1, weka.core.Instance inst2)

Methods inherited from class java.lang.Object

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

Constructor Detail

DistanceLib

public DistanceLib()

Method Detail

distance

public static double distance(DistanceLib.DistanceMeasure distanceMeasure,
                              weka.core.Instance inst1,
                              weka.core.Instance inst2)

euclidean

public static double euclidean(weka.core.Instance inst1,
                               weka.core.Instance inst2)

cosine

public static double cosine(weka.core.Instance inst1,
                            weka.core.Instance inst2)

jaccard

public static double jaccard(weka.core.Instance inst1,
                             weka.core.Instance inst2)

kullbackLeibler

public static double kullbackLeibler(weka.core.Instance inst1,
                                     weka.core.Instance inst2)

jensenShannon

public static double jensenShannon(weka.core.Instance inst1,
                                   weka.core.Instance inst2)