> From: Rolf Turner > > Anne Piotet wrote: > > > What R functionnalities are there to do missing values imputation > > (substantial proportion of missing data)? I would prefer to use > > maximum likelihood methods ; is the EM algorithm implemented? in > > which package? > > The so-called ``EM algorithm'' is ***NOT*** an > algorithm. It is a methodology or a unifying concept. > It would be impossible to ``implement'' it. (Except > possibly by means of some extremely advanced and > sophisticated Artificial Intelligence software.)
Yes, but EM for missing value imputation is a bit narrower, I guess. At least the `norm' package on CRAN has em.norm() for multivariate gaussian... Andy > cheers, > > Rolf Turner > [EMAIL PROTECTED] > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
