> Do you know about any good reference that discusses kappa for classification > and maybe CI for kappa???
I don't, but googling on kappa and confusion matrix etc should get you there. Kappa works very well when the true classes are skewed. For example, if 10% of you samples are class A and 90% class B, you can optimize accuracy by calling everything B. Max ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
