cc.mallet.types

Class Minkowski

java.lang.Object

cc.mallet.types.Minkowski

All Implemented Interfaces:

Metric

public class Minkowski
extends java.lang.Object
implements Metric

Constructor Summary

Constructors

Constructor and Description
Minkowski(double q) Constructor for Minkowski metric.

Method Summary

Modifier and Type	Method and Description
double	distance(SparseVector a, SparseVector b) Gives the Minkowski distance between two vectors.
static Metric	getMetric(double q)

Methods inherited from class java.lang.Object

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

Constructor Detail

Minkowski

public Minkowski(double q)

Constructor for Minkowski metric.

Parameters:

q - Power of component wise absolute difference; must be at least 1

Method Detail

getMetric

public static Metric getMetric(double q)

distance

public double distance(SparseVector a,
                       SparseVector b)

Gives the Minkowski distance between two vectors. distance(x,y) := \left( \Sum_i=0^d-1 \left| x_i - y_i \right|^q \right)^\frac{1}{q}

Specified by:

distance in interface Metric