I am trying to apply NML (Normalized Maximum Likelihood) information criterion using R, but I couldn't find the appropriate package.
For Mixed Effects modelling with R, I would suggest the "lme4" package [1].
Also, there is a nice tutorial, please have a look in the following pdf [2] which I also attach.
[1] http://cran.r-project.org/web/packages/lme4/index.html
[2] http://lme4.r-forge.r-project.org/lMMwR/lrgprt.pdf
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