search for: interesested

Dear R users, I have been using the rpart procedure to predict the occurrence of depression in a large data file. Since the prevalence is very low (5%), I have been using classification trees with a loss matrix that penalized false negatives more than false positives. I have become interesested in bagging these (successful!) classification trees, and have been using the ipred package for this. However, the ipred algorithm does not seem to do anything with the loss matrix I specify in control=rpart.control(method="class",cp=0,xval=0,parms=list(loss=matrix(c(0,1,10,0))) Am I...