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Re: st: Model-based Clustering


From   "Stas Kolenikov" <skolenik@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Model-based Clustering
Date   Sat, 25 Aug 2007 23:31:40 -0500

There were some commands to do normal mixtures (which you could try to
-findit-), but Fraley & Raftery's approach is deeply Bayesian, which
does not mesh up terribly well with Stata's concepts. I would guess
they had their implementation in Splus, as there were no R around back
in 1990s, but they may have ported in to R since then.

On 8/24/07, Lina Jonsson <lina.jonsson@vti.se> wrote:
> Hello.
>
> I know that there exist a function called mclust that works with S-PLUS for Model-based Cluster Analysis according to an article by Fraley and Raftery from 1998. Sense I´m no expert when it comes to clustering, it´s hard for me to be more specific. But in the article model-based cluster analysis is described as "In model-based cluster analysis data are represented by a mixture model in which each component corresponds to a different cluster. Models with varying geomteric properties are obtained through Gaussian compnents with different parameterixations and cross-cluster constraints..." I hope this gives you a clue to what I`m after. I appreciate all the help and suggestions I can get.
>
> Best Regards
>
> Lina Jonsson
>
>
>
>
>
> > -----Ursprungligt meddelande-----
> > Från: owner-statalist@hsphsun2.harvard.edu
> > [mailto:owner-statalist@hsphsun2.harvard.edu] För Marcello Pagano
> > Skickat: den 24 augusti 2007 14:25
> > Till: statalist@hsphsun2.harvard.edu
> > Ämne: Re: st: Model-based Clustering
> >
> > Can you be a little more specific please, Lina?
> > Clustering can have about three different meanings in a
> > statistical context, and that's just off the top of my head,
> > that are quite different.
> >
> > m.p.
> >
> > Lina Jonsson wrote:
> > > Hello.
> > >
> > > I would like to do model-based clustering so I wonder if
> > there are any
> > > commands for doing this i Stata.
> > >
> > >
> > > Best Regards
> > >
> > > Lina Jonsson
> > >
> > > *
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> > >
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> >
>
> *
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>


-- 
Stas Kolenikov, also found at http://stas.kolenikov.name

Small print: Please do not reply to my Gmail address as I don't check
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