Hello, I was wondering whether a Poisson mixture modeler/cluster analysis package is available for R. I scanned CRAN packages and couldn't find anything but I thought I'd ask. If not could anyone recommend a non-R open source package. I have found 'snob' but this program seems a bit hard to use in an automated, non interactive fashion. regards, Murad -- Murad Nayal M.D. Ph.D. Department of Biochemistry and Molecular Biophysics College of Physicians and Surgeons of Columbia University 630 West 168th Street. New York, NY 10032 Tel: 212-305-6884 Fax: 212-305-6926
The list could probably be more useful if you gave more details about your data and the problem. I have written a bit of R code myself for fitting a finite mixture of univariate Poissons by EM and found it very simple to program in R. I suspect that your problem is multivariate, but that should not present any difficulties. The Snob program employs a fairly sophisticated model search strategy based on the Minimum Message Length criterion. If you do not know much about the solution that you are seeking it might be a good way to go. I appreciate that Snob can be rather complex to set up and get going but I think that you should be able to get quite a bit of help from the Monash University people behind the program. They are usually quite keen to encourage new users of Snob. Murray Jorgensen> > Hello, > > I was wondering whether a Poisson mixture modeler/cluster analysis > package is available for R. I scanned CRAN packages and couldn't find > anything but I thought I'd ask. If not could anyone recommend a non-R > open source package. I have found 'snob' but this program seems a bit > hard to use in an automated, non interactive fashion. > > regards, > Murad > > > -- > Murad Nayal M.D. Ph.D. > Department of Biochemistry and Molecular Biophysics > College of Physicians and Surgeons of Columbia University > 630 West 168th Street. New York, NY 10032 > Tel: 212-305-6884 Fax: 212-305-6926 > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > R-project.org/posting-guide.html > >