[R] SVM parameters...

From: David Meyer <david.meyer_at_wu-wien.ac.at>
Date: Mon 27 Jun 2005 - 21:28:30 EST

Vivek,

I certainly would agree that every help page, including the one of svm(), could be improved, but I think it is not _that_ deficient. In particular, it tells you which parameters are used in the various kernels available.

Have you read the corresponding article in R News (basically contained as a vignette in the package)?

In addition, you could have a look at the documentation of libsvm, the library that is interfaced by the svm()-function in e1071.

Best,
David


hi,

i am really sorry to ask this on the list, but i havent been able to find anything on this topic.

i would like to know how the various parameters in the svm function call in library e1071 work. all the literature that i was able to find on the internet have been on the mathematics and derivation of equations of the SVM or some very specific examples that relate to biostatistics. i have been unable to find a concise description of how these parameters affect the model.
so far i have been using a brute force method, running all possible permutations and combinations , but this is taking enormous amounts of time.

i would be grateful for any help that you could provide.

thanks and regards ,
vivek.



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