Thank you David and Andy. Now, everything is clear.
For others, the problem is the one said in the subject, and the answer
is the one excerpted from reply from David.
TH.
On Jul 13, 2004, at 1:54 PM, David Meyer wrote:
Tae-Hoon:
When we run tune.* for parameter tuning, we get performance value.
Can you tell me what the definition of it is?
The values returned by tune() are Mean Squared Errors in case of
regression, and simple rates (*no* percentages) in case of
classification. As Andy already suggested, you might want to check if
your target variable is indeed a factor. In case it is and you still
get
values greater than 1, drop me a mail with a piece of code (and data)
enabling me to reproduce the phenomenon.
Best,
David
--
Dr. David Meyer
Department of Information Systems
Vienna University of Economics and Business Administration
Augasse 2-6, A-1090 Wien, Austria, Europe
Fax: +43-1-313 36x746
Tel: +43-1-313 36x4393
HP: http://wi.wu-wien.ac.at/Wer_sind_wir/meyer/
Tae-Hoon Chung, Ph.D
Post-doctoral Research Fellow
Molecular Diagnostics and Target Validation Division
Translational Genomics Research Institute
1275 W Washington St, Tempe AZ 85281 USA
Phone: 602-343-8724
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