>>>>> "DylanB" == Dylan Beaudette <[EMAIL PROTECTED]> >>>>> on Sun, 9 Apr 2006 19:28:44 -0700 writes:
DylanB> Greetings, I have had good success using the clara() DylanB> function to perform a simple cluster analysis on a DylanB> large dataset (1 million+ records with 9 variables). DylanB> Since the clara function is a wrapper to pam(), DylanB> which will accept known medoid data - I am wondering DylanB> if this too is possible with clara() ... The DylanB> documentation does not suggest that this is DylanB> possible. indeed, it doesn't -- because it's not yet possible. I (as maintainer of "cluster") had added the ``known medoid'' option to pam() a while ago last June (for cluster version 1.10.0), and had left a note my TODO file to do the same for clara(). Unfortunately it's not true that clara() was a wrapper to pam() as you state above. Given your wish and clear "use case" situation, I'm more motivated to approach this particular 'TODO' item! Martin Maechler, ETH Zurich DylanB> Essentially I am trying to implement a "supervised DylanB> classification" of numerous geographic data DylanB> layers. The "unsupervised" approach using clara() DylanB> works well, but I feel the output classes would be DylanB> more meaningful if I were able to let clara() know DylanB> about the classes that I have in mind. DylanB> Is this at all feasible, or am I trying to DylanB> accomplish something that is not possible? ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html