Changes in Version 0.1-2
o Functions glmertree() and lmertree() now take offset arguments.
o Argument ranefstart of functions glmertree() and lmertree() can now be
set to TRUE. As a result, the random effects will be estimated
before fitting the tree in the first iteration. This may yield better
results when random effects are expected to be substantial.
o Functions glmertree() and lmertree() now take cluster argument, an optional
vector with cluster IDs to be employed for clustered covariances in the parameter
stability tests.
o Bugs fixed: Argument dfsplit is now passed correctly to tree fitting functions,
additional arguments are now passed correctly to (g)lmer(). .
o Arguments "lmer.control" in lmertree() and "glmer.control" in glmertree()
are now actually passed to lmer() and glmer() internally.
Changes in Version 0.1-1
o First CRAN release of the "glmertree" package for fitting generalized linear
mixed-effects model trees in R. For an introduction to the underlying methods see
Fokkema, Smits, Zeileis, Hothorn, Kelderman (2015). Detecting
Treatment-Subgroup Interactions in Clustered Data with Generalized
Linear Mixed-Effects Model Trees. Working Paper 2015-10. Working Papers
in Economics and Statistics, Research Platform Empirical and Experimental
Economics, Universitaet Innsbruck.
URL http://EconPapers.RePEc.org/RePEc:inn:wpaper:2015-10
The package is under development on R-Forge at
https://R-Forge.R-project.org/projects/partykit/