On Wed, 26 Mar 2014 18:35:34 +0000 "Tomassini, Letizia" <tomass...@vetmed.wsu.edu> wrote:
> > Hello > I need to ask questions about the k-means clustering function. Mainly I would > like to know why, with the use of nstart=enough number of times, kmeans > always finds the same clustering arrangements; and this happens even when the > input dataset is sorted in different ways or I take out few observations. I > cannot seem to be able to recreate that when using SAS. Do you understand what kmeans does? Why would you expect otherwise? Besides, why does the function ahve to match SAS's output? (Do you know how it goes about initializing the function in SAS?) In any case, should it not be that it should provide the correct (best global minima, if possible) answer? Ranjan ____________________________________________________________ FREE 3D EARTH SCREENSAVER - Watch the Earth right on your desktop! ______________________________________________ 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.
