On 02/12/10 17:49:37, Andrew Agrimson wrote: > I've been comparing results from kmeans() in R to PROC FASTCLUS in SAS > and I'm getting drastically different results with a real life data set. > [...] Has anybody looked into the differences in the implementations or > have any thoughts on the matter?
Hi Andrew, as per the website below, it looks as if PROC FASTCLUS is implementing a certain flavor of k-Means: http://www.technion.ac.il/docs/sas/stat/chap27/sect2.htm As per the manpage ?kmeans, the R implementation of k-Means has the option to set one of the algorithms explicitly: algorithm = c("Hartigan-Wong", "Lloyd", "Forgy", "MacQueen")) I don't know whether you've tried that, but you may start by setting these algorithm variants explicitly and see what the outcome is. Regards, Georg. -- Research Assistant Otto-von-Guericke-Universität Magdeburg resea...@georgruss.de http://research.georgruss.de ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
