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How can I change the sigma value in Rattle for the rbfdot kernel in SVM model? I can change the cost function using eg: 'C-svc', 10

I use the options box to change these, if I type: 'C-svc','automatic', 10
I assume this means sigma is automatic however I cannot find a variation to set it to a value. Any help appreciated!

lindseym
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1 Answers1

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From the R console, type

> ?ksvm

You will then see the manual page for the ksvm() function. The various parameters are listed there. Then in rattle you can provide those Options like:

type="C-svc", kpar=list(sigma=0.05)
Graham Williams
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