[R] svm

[Christian Hennig]

Hello list,

I want to apply svm from library e1071, and I want to supply class weights.
I do not really understand the help entry (and there is no example)

class.weights: a named vector of weights for the different classes,
          used for asymetric class sizes. Not all factor levels have to
          be supplied (default weight: 1). All components have to be
          named.

I have two classes, factor levels are 1 (2000 cases, say) and 2 (1000
cases). How has the entry for class.weights to look like? (I'm more
interested in the syntax than what the weight should be, but if you know,
please tell me...)

Best,
Christian


-- 
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Christian Hennig
Seminar fuer Statistik, ETH-Zentrum (LEO), CH-8092 Zuerich (currently)
and Fachbereich Mathematik-SPST/ZMS, Universitaet Hamburg
hennig at stat.math.ethz.ch, http://stat.ethz.ch/~hennig/
hennig at math.uni-hamburg.de, http://www.math.uni-hamburg.de/home/hennig/
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