self organizing map advice for categorical data
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). http://www.jstatsoft.org/v21/i05 Hope it helps Thomas Petzoldt