[R] self organizing map advice for categorical data

Thomas Petzoldt thpe at simecol.de
Tue May 5 23:27:54 CEST 2009

George Chen schrieb:
> Hello,
> Could anybody offer any advice about implementing a Kohonen self organizing map for categorical data?  Specifically I am wondering if there are any pre-existent packages that can deal with categorical data and/or how one would compare the input vector of categoricals with the self organizing map nodes.
> Thanks in advance.
> George Chen

Yes, there is a very nice one with excellent graphics, see article:

Ron Wehrens, Lutgarde M. C. Buydens (2007) Self- and Super-organizing 
Maps in R: The kohonen Package. Journal of Statistical Software	21(5). 

Hope it helps

Thomas Petzoldt

More information about the R-help mailing list