Hi,
Can someone suggest how I can fit a mixture of 3
normals in S-Plus? I have used the code from Venables
and Ripley, page 292 to fit a mixture of 2 normals. In
this case, I could specify that the mixing proportion,
p, ranges from 0 to 1. However, in the case of 3
normals, I would have to specify that p1+p2+p3 = 1,
and that each pi ranges between 0 & 1. Is it possible
for me to specify this additional constraint while
using the ?nlminb? function to estimate the parameters
/ proportions?
Thanks
Sumithra
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