Hello
I am running S-Plus 6 on a Windows machine.
I am trying to fit a classification tree with independent variables
that are ordinal. However the result does not take the ordinalaity of
the variables into account. e.g., one variable has levels A through H.
I have made this an ordinal factor in the data window. But the tree
gives splits such as
AC BDEFGH
I had thought of perhaps numericizing the scale, but this doesn't seem
ideal to me. Is there a better solution?
Thanks in advance
Peter
Peter L. Flom, PhD
Assistant Director, Statistics and Data Analysis Core
Center for Drug Use and HIV Research
National Development and Research Institutes
71 W. 23rd St
New York, NY 10010
(212) 845-4485 (voice)
(917) 438-0894 (fax)
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