st: Package "rel_clust" available on SSC

[Dirk Enzmann <dirk.enzmann@uni-hamburg.de>]

Thanks (again) to Kit Baum, the new package "rel_clust" is available on SSC.

-rel_clust- computes indices of relative clusterability of a set of 
variables according to Steinley and Brusco (2008) and implements their 
variance-to-range ratio weighting procedure for use in cluster analysis.

-rel_clust- can be used to transform a set of variables by 
z-standardization, by standardization by range, or by variance-to-range 
(VR) ratio weighting. The VR ratio weighting procedure was designed 
specifically for cluster analysis: It reflects the degree of 
"clusterability" of the set of variables used. According to Steinley and 
Brusco (2008), VR ratio weighting of variables together with their 
proposed variable selection procedure increases the ability of K-means 
cluster analysis to accurately recover the true cluster structure.

Reference:

Steinley, D. & Brusco, M. J. (2008). A new variable weighting and 
selection procedure for K-means cluster analysis. Multivariate 
Behavioral Research, 43, 77-108. [ 
http://www.tandfonline.com/doi/abs/10.1080/00273170701836695 ]

Dirk

========================================
Dr. Dirk Enzmann
Institute of Criminal Sciences
Dept. of Criminology
Rothenbaumchaussee 33
D-20148 Hamburg
Germany

phone: +49-(0)40-42838.7498 (office)
       +49-(0)40-42838.4591 (Mrs Billon)
fax:   +49-(0)40-42838.2344
email: dirk.enzmann@uni-hamburg.de
http://www2.jura.uni-hamburg.de/instkrim/kriminologie/Mitarbeiter/Enzmann/Enzmann.html
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