Class SparseEuclideanDistance

java.lang.Object

smile.math.distance.SparseEuclideanDistance

All Implemented Interfaces:

Serializable, ToDoubleBiFunction<SparseArray, SparseArray>, Distance<SparseArray>, Metric<SparseArray>

public class SparseEuclideanDistance
extends Object
implements Metric<SparseArray>

Euclidean distance on sparse arrays.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
SparseEuclideanDistance()	Constructor.
SparseEuclideanDistance(double[] weight)	Constructor with a given weight vector.

Method Summary

Modifier and Type	Method	Description
double	d(SparseArray x, SparseArray y)	Returns the distance measure between two objects.
String	toString()

Methods inherited from class Object

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

Methods inherited from interface Distance

apply, applyAsDouble, pdist, pdist

Constructor Details

SparseEuclideanDistance

public SparseEuclideanDistance()

Constructor. Standard (unweighted) Euclidean distance.

SparseEuclideanDistance

public SparseEuclideanDistance(double[] weight)

Constructor with a given weight vector.

Parameters:

weight - the weight vector.

Method Details

toString

public String toString()

Overrides:

toString in class Object

d

public double d(SparseArray x,
 SparseArray y)

Description copied from interface: Distance

Returns the distance measure between two objects.

Specified by:

d in interface Distance<SparseArray>

Parameters:

x - an object.

y - an object.

Returns:

the distance.