[R] e1071::SVM calculate distance to separating hyperplane

From: David Meyer <david.meyer_at_wu-wien.ac.at>
Date: Thu 29 Dec 2005 - 11:54:42 EST

predict.svm() can give you the decision values which are the distances you are looking for (up to a scaling constant).


>I know this question has been posed before, but I didnt find the answer in
>the R-help archive, so please accept my sincere apologies for being
>How can one (elegantly) calculate the distance between data points (in the
>transformed space, I suppose) and the hyperplane that separates the 2
>categories when using svm() from the e1071 library?

>thanks a lot,

Dr. David Meyer
Department of Information Systems and Operations

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/~meyer/

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Received on Fri Jan 06 01:42:42 2006

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