[R] Decision values from KSVM

Noah Silverman noah at smartmediacorp.com
Fri Jun 11 23:27:57 CEST 2010


Hi,

I'm working on a project using the kernlab library.

For one phase, I want the "decision values" from the SVM prediction, not
the class label. the e1071 library has this function, but I can't find
the equivalent in ksvm.

In general, when an SVM is used for classification, the label of an
unknown test-case is decided by the "sign" of its resulting value as
calculated from the SVM {-,+}
I want the actual values as a proximal representation of the "strength"
of the decision. (Further from the hyperplane indicates more confidence)

Any suggestions?



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