[R-sig-ME] A nAGQ=0 question for glmer()
bbo|ker @end|ng |rom gm@||@com
Wed Sep 8 19:13:15 CEST 2021
On 9/8/21 12:24 PM, Hedyeh Ahmadi wrote:
> Hello all,
> I have the following two questions:
> 1. If one is using a glmer() model with the nAGQ=0 option, I was wondering if there is a way to see if the model has actually converged?
> 2. If the mentioned model runs with no error/warning , does that mean the model has converged?
The convergence diagnostics and messages don't differ between nAGQ=0
and nAGQ>0 (so, the answer to #2 is 'yes').
For a fitted model gm1, any problems with convergence will be
recorded in gm1 using modelinfo; specifically, see the $conv, $warnings, and
$message components ($conv has two elements, $opt (optimizer convergence
code) and $lme4 (warnings/non-convergence warnings from lme4).
$conv$opt should be 0, $conv$lme4 and $warnings should be length-zero.
For what it's worth, the best description of the
assumption/approximation that nAGQ=0 makes is in the TMB (!)
> Any help would be appreciated.
> Hedyeh Ahmadi, Ph.D.
> Keck School of Medicine
> Department of Preventive Medicine
> University of Southern California
> [[alternative HTML version deleted]]
> R-sig-mixed-models using r-project.org mailing list
Dr. Benjamin Bolker
Professor, Mathematics & Statistics and Biology, McMaster University
Director, School of Computational Science and Engineering
Graduate chair, Mathematics & Statistics
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