[R] tune(): how to specify a kernel ?

ryszard.czerminski@pharma.novartis.com ryszard.czerminski at pharma.novartis.com
Mon Jan 12 15:15:12 CET 2004

I would like to use tune() for tuning parameters for svm method, but it is 
not clear
to me how to specify a kernel.

I am trying to use something like this:

> obj <- tune(svm, Species~., data = iris, ranges = list(kernel = 
c('radial', 'linear')))
Error in pmatch(x, table, duplicates.ok) :
        argument is not of mode character

but it generates an error.


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