[R] robust mixed effects models

Claudia Tebaldi tebaldi at rap.ucar.edu
Fri Jul 5 22:19:40 CEST 2002

I'd like to apply the ideas of
Pinheiro et al. (1997): "Robust Estimation in LInear Mixed Effects Models
using the Multivariate t-Distribution" and I'm wondering if the EM-based
estimation described in that paper has been implemented by somebody in R
already (I'm assuming it's not yet available within the package nlme --
whose subtitle is "Fit and compare ==>Gaussian<== linear and nonlinear
mixed-effects models")
Before venturing in EM-programming territory I thought I ask...

thank you


(I'm using R-1.4.1) 

claudia tebaldi                                  NCAR  RAP
project scientist                                P.O. Box 3000
M-W-Th @FL (303) 497-2830                        Boulder, CO 80307
Tu-F   @ML (303) 497-1621                        tebaldi at ucar.edu

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