Package 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.

See Also:

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

Method Summary

Modifier and Type	Method	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 Details

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