Package org.hipparchus.clustering.distance

Class CanberraDistance

java.lang.Object

org.hipparchus.clustering.distance.CanberraDistance

All Implemented Interfaces:

Serializable, DistanceMeasure

public class CanberraDistance
extends Object
implements DistanceMeasure

Calculates the Canberra distance between two points.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
CanberraDistance()

Method Summary

Modifier and Type	Method	Description
double	compute(double[] a, double[] b)	Compute the distance between two n-dimensional vectors.

Methods inherited from class java.lang.Object

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

Constructor Detail

CanberraDistance

public CanberraDistance()

Method Detail

compute

public double compute(double[] a,
                      double[] b)
               throws MathIllegalArgumentException

Compute the distance between two n-dimensional vectors.

The two vectors are required to have the same dimension.

Specified by:

compute in interface DistanceMeasure

Parameters:

a - the first vector

b - the second vector

Returns:

the distance between the two vectors

Throws:

MathIllegalArgumentException - if the array lengths differ.