org.apache.commons.math3.ml.distance

Class EuclideanDistance

java.lang.Object

org.apache.commons.math3.ml.distance.EuclideanDistance

All Implemented Interfaces:

java.io.Serializable, DistanceMeasure

public class EuclideanDistance
extends java.lang.Object
implements DistanceMeasure

Calculates the L₂ (Euclidean) distance between two points.

Since:

3.2

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private static long	serialVersionUID Serializable version identifier.

Constructor Summary

Constructors

Constructor and Description
EuclideanDistance()

Method Summary

Methods

Modifier and Type	Method and 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

Field Detail

serialVersionUID

private static final long serialVersionUID

Serializable version identifier.

See Also:

Constant Field Values

Constructor Detail

EuclideanDistance

public EuclideanDistance()

Method Detail

compute

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

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