[R] probabilities in svm output in e1071 package
David Meyer
david.meyer at wu.ac.at
Thu May 6 00:53:17 CEST 2010
Dear Changbin,
that looks odd indeed - can you cast your example in a reproducible one
so I can track this down (or at least send me the data offline?)
Thanks
David
Changbin Du wrote:
> svm.fit<-svm(as.factor(out) ~ ., data=all_h, method="C-classification",
> kernel="radial", cost=bestc, gamma=bestg, cross=10) # model fitting
>
> svm.pred<-predict(svm.fit, hh, decision.values = TRUE, probability =
> TRUE) # find the probability, but can not find.
>
> attr(svm.pred, "probabilities")
>
> > attr(svm.pred, "probabilities")
> 1 0
> 1 0 0
> 2 0 0
> 3 0 0
> 5 0 0
> 6 0 0
> 7 0 0
> 8 0 0
> 9 0 0
>
> Hi, Dear R community,
>
> IN my data, the out variable is the target variable (0, and 1), hh is
> the new data set does not contain the out variable. I trained the model
> svm.fit in training data. And want to predict the out in the new data
> set hh.
>
> WHy the probabilities are both 0 in 1 and 0 class?
>
>
>
>
>
>
> --
> Sincerely,
> Changbin
> --
>
> Changbin Du
> DOE Joint Genome Institute
> Bldg 400 Rm 457
> 2800 Mitchell Dr
> Walnut Creet, CA 94598
> Phone: 925-927-2856
>
>
--
Priv.-Doz. Dr. David Meyer
Department of Information Systems and Operations
WU
Wirtschaftsuniversität Wien
Vienna University of Economics and Business
Augasse 2-6, 1090 Vienna, Austria
Tel: +43-1-313-36-4393
Fax: +43-1-313-36-90-4393
HP: http://ec.wu.ac.at/~meyer
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