Respected Sir, I am Regina M.Verghis, Final Year PG in Biostatistics. My thesis is based on a count data. I am trying to fit the data using HMM. I have the count of new infectives each month. I am not considering any other covariates. I am using the 'chidden(repeated package)'. Can you explain about the estimation of the parameters. And how to estimate the initial values of 'mu' and 'pgamma'. I will be grateful to you for the help. Thanking You, Yours Faithfuly Regina M.Verghis -- regina.verghis@gmail.com [[alternative HTML version deleted]]