I think it's important to say why you're unhappy with your current measures? Are they not capturing aspects of the data you understand?
I typically use several residual measures in conjunction, each has it's benefits/drawbacks. I just throw them all in a table. -- View this message in context: http://www.nabble.com/goodness-of-%22prediction%22-using-a-model-%28lm%2C-glm%2C-gam%2C-brt%2C-regression-tree-....-%29-tp25270261p25408808.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.