[R] mixture of 2 normals - starting values

Xiaohui chenxh007 at gmail.com
Fri Feb 23 06:14:06 CET 2007


Hi,

Try MCLUST package. You can use the hierarchical clustering to find the 
starting values of your EM.

Xiaohui

apjaworski at mmm.com wrote:
> Hi,
>
> I have a problem of estimating a mixture of two normal distributions.  I
> need to find the starting points automatically, since this is a part of a
> larger piece of image processing code.
>
> I found the mix2normal1 function in VGAM package that mentions a method of
> finding starting values for mu1 and mu2 but refers the reader to a book by
> Everitt and Hand.  Unfortunately, I do not have an easy access to this
> book.  Could anybody point me to a description of the method that I could
> use?
>
> Any help will be appreciated.  Thanks in advance,
>
> Andy
>
> __________________________________
> Andy Jaworski
> 518-1-01
> Process Laboratory
> 3M Corporate Research Laboratory
> -----
> E-mail: apjaworski at mmm.com
> Tel:  (651) 733-6092
> Fax:  (651) 736-3122
>
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