R help - Apr 2008 - How to ask for *fixed* number of distributions under parameterized Gaussian mixture model.

Dear R users:
I am wondering how to ask for *fixed* number of distributions under
parameterized Gaussian mixture model.

I know that em() and some related functions can predict the
parameterized Gaussian mixture model. However, there seems no
parameter to decide number of distributions to be mixed (if we known
the value in advance).

That is, assume I know the (mixed)data is from 3 different
distributions. The output, however, may indicate that number of
distributions that form the data is 4. How can I assign number of
distributions is 3 in advance?

Thanks a lot for your help.

Hi, Chen,
I don't know how you are doing it.
however, per my limited knowledge, it is easy with flexmix package.



On Thu, Apr 3, 2008 at 6:26 AM, Hung-Hsuan Chen (Sean)
<sandwichc at gmail.com> wrote:
> Dear R users:
>  I am wondering how to ask for *fixed* number of distributions under
>  parameterized Gaussian mixture model.
>
>  I know that em() and some related functions can predict the
>  parameterized Gaussian mixture model. However, there seems no
>  parameter to decide number of distributions to be mixed (if we known
>  the value in advance).
>
>  That is, assume I know the (mixed)data is from 3 different
>  distributions. The output, however, may indicate that number of
>  distributions that form the data is 4. How can I assign number of
>  distributions is 3 in advance?
>
>  Thanks a lot for your help.
>
>  ______________________________________________
>  R-help at r-project.org mailing list
>  https://stat.ethz.ch/mailman/listinfo/r-help
>  PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
>  and provide commented, minimal, self-contained, reproducible code.
>


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