[R] Weighted Clustering

[Christian Hennig]

Hi,

the target functions of k-means clusterung and of normal mixture model
clustering (in library mclust) should work with weighted data points as
well. This is, however, only a theoretical suggestion, because as far as I
know, it is not implemented in R, and the R-functions for kmeans and 
model based clustering call C and fortran code, which I think is
not too easy to adapt to your problem.
If I would be in your situation, I would presumably write new code for a
k-means algorithm (there are some, which are very easy to implement) with
weighted data.

Best,
Christian

On Wed, 22 Oct 2003, vishal goyal wrote:

> Hi,
> 
> I have a data set(say 2-d demands of a product (say flow-rate vs
> concentration)) and with each demand is the weightage (like a probability)
> of that demand occuring. Is there a way to cluster this demand-data
> (deterministic or probabilistic(if possible)) which also incorporates the
> weights (just multiplying distances with weights gives poor and mixed
> clusters) while clustering (Something like a Facility Location problem).
> I would appreciate any advice.
> 
> Regards
> Vishal Goyal
> 
> 
> 
> 
> 
> 
> 
> 
> --------------------------------------------------------------------------
> "Simplicity is the ultimate sophistication"
> ---------------------------------------------------------------------------
> 
> Vishal Goyal, Graduate Student
> Department of Chemical and Biochemical Engineering
> Rutgers - The State University of New Jersey
> 98 Brett Road, Piscataway, NJ 08854
> tel: 732-445-7061 (O)
> email: vigoyal at eden.rutgers.edu
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> 

***********************************************************************
Christian Hennig
Fachbereich Mathematik-SPST/ZMS, Universitaet Hamburg
hennig at math.uni-hamburg.de, http://www.math.uni-hamburg.de/home/hennig/
#######################################################################
ich empfehle www.boag-online.de