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arimamodel
2006 Nov 24
1
How to find AUC in SVM (kernlab package)
...ing Area Under Curve (AUC). I know ROCR
package can do this job but I found all example in ROCR package have
include prediction, for example, ROCR.hiv {ROCR}. My problem is how to
produce prediction in SVM and to find AUC.
Here is a simple example:
library(MASS)
library(kernlab)
library(ROCR)
pimamodel <- ksvm(type ~ .,data=Pima.tr,type="C-svc",C=10,prob.model=TRUE)
pimamodel
fitted(pimamodel)
pima.pred <- predict(pimamodel, Pima.te[,-8], type="probabilities")
pima.pred
# try to find AUC
#predid.no <- prediction(pima.pred[,1], Pima.te[,8])
#predid.yes <- predict...