Re: EM algoritm & probability distribution

On 6/7/09 9:19 AM, Alessandro Di Florio wrote:
> Hi all,
> I'm a starting to use weka for cluster analysis and i'd like to have
> some informations about EM algorithm. I have a dataset composed both
> quantitative (Real and Integer) and qualitative variables (binary and
> others). Which kinds of probability distribution (Poisson, Bernouilli,
> Gauss) the alghorithm uses to built the clusters?

EM only has Gaussian estimators for numeric variables and discrete estimators
for nominal variables. Making estimators pluggable in EM is on the list of
things to do at some stage.

Cheers,
Mark.


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Mark Hall
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