de.lmu.ifi.dbs.elki.algorithm.clustering.hierarchical

Class SingleLinkageMethod

java.lang.Object

de.lmu.ifi.dbs.elki.algorithm.clustering.hierarchical.SingleLinkageMethod

All Implemented Interfaces:

LinkageMethod

@Reference(authors="K. Florek and J. \u0141ukaszewicz and J. Perkal and H. Steinhaus and S. Zubrzycki",
           title="Sur la liaison et la division des points d\'un ensemble fini",
           booktitle="Colloquium Mathematicae (Vol. 2, No. 3-4)")
@Alias(value={"single-link","single","slink","nearest","nearest-neighbor"})
public class SingleLinkageMethod
extends Object
implements LinkageMethod

Single-linkage clustering method. Reference:

K. Florek and J. Łukaszewicz and J. Perkal and H. Steinhaus and S. Zubrzycki
Sur la liaison et la division des points d'un ensemble fini
In Colloquium Mathematicae (Vol. 2, No. 3-4)

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SingleLinkageMethod.Parameterizer Class parameterizer.

Field Summary

Fields

Modifier and Type	Field and Description
static SingleLinkageMethod	STATIC Static instance of class.

Constructor Summary

Constructors

Constructor and Description
SingleLinkageMethod() Deprecated. use the static instance STATIC instead.

Method Summary

Methods

Modifier and Type	Method and Description
double	combine(int sizex, double dx, int sizey, double dy, int sizej, double dxy) Compute combined linkage for two clusters.

Methods inherited from class java.lang.Object

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

Field Detail

STATIC

public static final SingleLinkageMethod STATIC

Static instance of class.

Constructor Detail

SingleLinkageMethod

@Deprecated
public SingleLinkageMethod()

Deprecated. use the static instance STATIC instead.

Constructor.

Method Detail

combine

public double combine(int sizex,
             double dx,
             int sizey,
             double dy,
             int sizej,
             double dxy)

Description copied from interface: LinkageMethod

Compute combined linkage for two clusters.

Specified by:

combine in interface LinkageMethod

Parameters:

sizex - Size of first cluster x before merging

dx - Distance of cluster x to j before merging

sizey - Size of second cluster y before merging

dy - Distance of cluster y to j before merging

sizej - Size of candidate cluster j

dxy - Distance between clusters x and y before merging

Returns:

Combined distance