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...: The specified password is invalid. When prompted for the old smbpasswd I just hit enter because there is nosmb passwd yet. Do you have any suggestions for this situation.... Thanks <><><><><><><><><><><> Dave Hunter mailto:dhunter@saultc.on.ca <><><><><><><><><><><>

Dear all, I am attempting to model some one-dimensional data using a mixture model of non-central Student's t distributions. However, I haven't been able to find any R package that provides this functionality. Could there be a way to "manipulate" the EM algorithms from the mixdist or mixtools package to fit the model, or do you have any other suggestions? If anyone could help

...principle too difficult to write code to implement an EM > > algorithm to search for a maximum likelihood estimator in a finite > > mixture model. Check out a reference on finite mixture models that > > discusses EM algorithms (e.g., Section 2.2 of > http://www.stat.psu.edu/~dhunter/papers/mixtools.pdf > > although there are undoubtedly better references out there for this > > purpose). > > > > In the case of components that are assumed to be noncentral Student > > t distributions, you may have a bit of trouble since if I remember > > corre...

Hello. The sentence in extractAIC's help <http://www.stat.psu.edu/~dhunter/R/html/stats/html/extractAIC.html> which discusses AIC's estimate of -2logL from RSS reads: "AIC only handles unknown scale and uses the formula n log (RSS/n) - n + n log 2pi - sum(log w) where w are the weights. Further AIC counts the scale estimation as a parameter in the edf and extr...

Does anyone know if R have any problems with the exponential random number generation (function rexp)? I comment it because I executed data<-sort(rexp(100)) plot(data,dexp(data)/(1-pexp(data)),type="l") and the graphic isn't constant. (Note: exponential distribution have a constant hazard failure rate). Thank you, Juan

...ly don't > even have enough data to support one covariate. The study, presuming > an 'a priori' design, is way underpowered for what you are > attempting to do. > > HTH, > > Marc Schwartz > > > > > > > > > > From: David Hunter <dhunter@stat.psu.edu> > Date: 16 June 2009 1:12:54 AM > To: r-help@r-project.org > Subject: Re: [R] Fitting Mixture of Non-Central Student's t > Distributions > > > Hi Susanne. The mixtools package does not do this automatically and > I would be surprised if there were a...