[ADMB Users] Examples of multilevel multiprocess model

H. Skaug hskaug at gmail.com
Mon Jun 1 08:10:16 PDT 2009


multivariate log-normal for the unobserved hetegeineity is OK, but you
need to give us a brief summary of your model, including the number of
"individuals", if you want more detailed feedback

The largest collection of latent variable models in ADMB is found here:



On Sun, May 31, 2009 at 12:50 AM, Shige Song <shigesong at gmail.com> wrote:
> Dear All,
> I am trying to port an analysis from aML to ADMB. This is a multilevel
> multiprocess model (some people call it multivariate multilevel model) of
> child mortality. I am jointly modeling infant mortality (death before age
> one), mortality between age 1-10, and mortality between age 11-20. Because
> aML assumes a multivariate normal distribution for the unobserved
> heterogeneity terms, some reviwers think my results are minly driven by this
> distributional assumption. I would like to try alternative distribution
> assumption for these unobserved hetegeineity terms such as multivariate
> log-normal or multivariate t. ADMB seems to be the only softare choice for
> this.
> It will be really great if there is an example of multilevel multiprocess
> model using ADMB so that I can tailor it to suite my own research needs. Can
> anybody help me with this?
> Many thanks.
> Best,
> Shige
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