On Wed, 16 Feb 2005, Brian Aukema wrote:
At present, can generalized linear mixed models with negative binomial distribution and estimating the shape parameter be fit using R? I am aware of glm.nb but am wondering about incorporation of mixed effects.
I am not aware of anyone who knows how to do that reasonably robustly. If the model were simple enough you might be able to do numerical integration well enough to get a likelihood to maximize, but we usually have enough trouble with a Poisson model (and our experiments seem to show that other people's software has much more trouble).
-- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595
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