com.chemaxon.clustering.wards

Interface LanceWilliamsMerge

All Known Implementing Classes:

LanceWilliamsMerges.AverageLinkage, LanceWilliamsMerges.CompleteLinkage, LanceWilliamsMerges.SingleLinkage, LanceWilliamsMerges.Wards

@Beta
 @PublicAPI
public interface LanceWilliamsMerge

Instances represent a cluster distance update for agglomerative clusterings.

Please note that this interface is marked with Beta annotation, so it can be subject of incompatible changes or removal in later releases.

Author:

Gabor Imre

See Also:

LanceWilliamsAlgorithm, http://en.wikipedia.org/wiki/Ward%27s_method#Lance.E2.80.93Williams_algorithms

Method Summary

Modifier and Type	Method and Description
double	dijk(int ni, int nj, int nk, double dij, double dik, double djk) Returns the distance of cluster k and the cluster resulted from merging cluster i and j.

Method Detail

dijk

double dijk(int ni,
            int nj,
            int nk,
            double dij,
            double dik,
            double djk)

Returns the distance of cluster k and the cluster resulted from merging cluster i and j.

Parameters:

ni - Size of cluster i to be merged

nj - Size of cluster j to be merged

nk - Size of cluster k

dij - Distance of clusters i and j

dik - Distance of clusters i and k

djk - Distance of clusters j and k

Returns:

Distance of cluster k and cluster i-j merged