lme4pureR: lme4 in Pure R. R package. The penalized least squares (PLS) and penalized iteratively reweighted least squares (PIRLS) algorithms from lme4, but written entirely in pure R. The purposes of this package are: clarify how PLS and PIRLS work without having to read through C++ code, as a sandbox for trying out modified versions of PLS and PIRLS, as a companion to manuscripts describing the lmer and glmer functions.

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References in zbMATH (referenced in 1 article )

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  1. Douglas Bates; Martin M├Ąchler; Ben Bolker; Steve Walker: Fitting Linear Mixed-Effects Models Using lme4 (2015) not zbMATH