Wuming, Have a look at the depmix package that implements the viterbi algorithm for hidden markov models (in discrete time). The function to use is posterior(...). The package includes a manual with a number of examples. Hth, Ingmar
> From: Wuming Gong <[EMAIL PROTECTED]> > Date: Wed, 22 Mar 2006 23:18:54 +0800 > To: <[email protected]> > Subject: [R] R package for computing state path using Viterbi algorithm > > Dear list, > > This question is about Hidden Markov Model. Given a transition > matrix, an emission matrix and a sequence of observed symbols > (actually, nucleotide sequences, A, T, C and G), I hope to predict the > sequence of state by Viterbi algorithm. I searched R repository for > related packages. msm package has function viterbi.msm (as well as > very good document), but it only works for continuous-time condition. > Other two HMM related packages, hmm.discnp and repeats, however, does > not have such a function (similar to "hmmviterbi()" function in > MatLab). > > Is there an R package that implements such a function? > > Thanks, > > Wuming > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
