Hello,

I've come across a strange error...


Here is what happens:

model <- svm(traindata,trainlabels, type="C-classification", 
kernel="radial", cost=10,  class.weights=c("win"=3,"lose"=1), 
scale=FALSE, probability = TRUE)
predictions <- predict(model, traindata)
pred <- prediction(predictions, trainlabels)


This returns an error:
Error in prediction(predictions, trainlabels) :
   Format of predictions is invalid.

Yet my predictions is just a matrix of predicted labels.  Nothing 
fancy.  (In fact, my step follow the exact example on the ROCR homepage.)

A search through google for "Format of predictions is invalid" returns 
zero results.

Can anyone suggest how I might fix this problem?

Thank You,





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