[R-sig-ME] glmm AIC/LogLik reliability
D O S Gillespie
D.Gillespie at sheffield.ac.uk
Wed Jan 28 14:31:13 CET 2009
Dear R-Sig-ME -
Lets assume that I am going to use a model averaging AIC based
approach to evaluate nested glmm's.
I would like to assume that the estimation of AIC and LogLik in the
glmm's of lmer are consistent enough (precise, if not accurate) to use
in this framework. I realize that we don't trust anova(m1, m2), mainly
due to df and tests statistics issues.
I realise that some of you may suggest that this is not the correct
framework. If so, can you distinguish arguments about the philosophy
of AIC model averaging from the practical implementation - i.e. is the
output consistent enough to use if, even if you don't believe the
answer. Perhaps they are too intertwined.
Thanks,
Duncan Gillespie
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