[R] cluster analysis

[Christian Hennig]

On Mon, 11 Aug 2003, HIRAOKA Yuichiro wrote:

> I'like to do cluster analysis by using mahalanobis distance.
> Could you tell me how to do?

Could you tell us more precisely what you want?

"cluster analysis by using mahalanobis distance" could mean:
1) Compute Mahalanobis distances (command mahalanobis)
   and then apply any distance based cluster method (which?)
2) Fit normal mixture with unrestricted covariance matrix: use model 
   "VVV", command EMclust (library mclust)
3) Do Mahalanobis fixed point cluster analysis with command fixmahal
   (not too well known up to now, but it's a nice method in my package fpc)
4) Something else?

Best,
Christian

-- 
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Christian Hennig
Seminar fuer Statistik, ETH-Zentrum (LEO), CH-8092 Zuerich (currently)
and Fachbereich Mathematik-SPST/ZMS, Universitaet Hamburg
hennig at stat.math.ethz.ch, http://stat.ethz.ch/~hennig/
hennig at math.uni-hamburg.de, http://www.math.uni-hamburg.de/home/hennig/
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