pledge.core.techniques

Class DistancesUtil

java.lang.Object

pledge.core.techniques.DistancesUtil

public class DistancesUtil
extends java.lang.Object

This class defines some common normalized distances to measure the distance between two products.

Constructor Summary

Constructors

Constructor and Description
DistancesUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static double	getAntiDiceDistance(Product p1, Product p2) Return the anti dice distance between two products.
static double	getDiceDistance(Product p1, Product p2) Return the dice distance between two products.
static double	getJaccardDistance(Product p1, Product p2) Return the jaccard distance between two products.

Methods inherited from class java.lang.Object

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

Constructor Detail

DistancesUtil

public DistancesUtil()

Method Detail

getJaccardDistance

public static double getJaccardDistance(Product p1,
                        Product p2)

Return the jaccard distance between two products.

Parameters:

p1 - the first product to consider.

p2 - the second product to consider.

Returns:

the resulting jaccard distance between p1 and p2

getDiceDistance

public static double getDiceDistance(Product p1,
                     Product p2)

Return the dice distance between two products.

Parameters:

p1 - the first product to consider.

p2 - the second product to consider.

Returns:

the resulting dice distance between p1 and p2

getAntiDiceDistance

public static double getAntiDiceDistance(Product p1,
                         Product p2)

Return the anti dice distance between two products.

Parameters:

p1 - the first product to consider.

p2 - the second product to consider.

Returns:

the resulting anti dice distance between p1 and p2