Hello, I searched for a validation method for GLM/GAM inside R. So far I only found cv.glm() a k-fold cross-validation for GLM. But I wonder if there is something like ROC/AUC validation method for a GLM/ GAM model available?. Perhaps with bootsrapping afterwards to get confid. intervals, but not necessary. any advice in which package I can find such a tool? BTW I tried to install the ROC packages, but R prompts that this package is not available on cran. Thanks, Martin