Dear all,
I want to directly write the loglike function of poisson- lognormal regression
and then estimate the parameters. the response (Y)is count and I have two
explanatory variable (x1:nominal) and (x2:continiuouse). which package in R can
be used ?.How can input the data and write the loglike function and then
optimize.
regards
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> Dear all, > I want to directly?write the loglike function of poisson- lognormal > regression and then estimate the parameters. the response (Y)is count > and?I have two explanatory variable (x1:nominal) and (x2:continiuouse). > which package in R can be used ?.How?can?input the data and write the > loglike function and then optimize. > regards??I suggest you define a function with the process model and the likelihood and then use nlm to minimiza the negative log-likelihood. See the examples at the end of the nlm help. HTH Ruben