Hello, I'm using mvpart option xv="1se" to compute a regression tree of good size with the 1-SE rule. To better understand 1-SE rule, I took a look on its coding in mvpart, which is :
Let z be a rpart object , xerror <- z$cptable[, 4] xstd <- z$cptable[, 5] splt <- min(seq(along = xerror)[xerror <= min(xerror) + xvse * xstd]) I interprete this as following: the simplest tree with xerror under min(xerror) + its own xstd Neverthless, in some article I read the following rule: the simplest tree with xerror under min(xerror) + xstd corresponding to the min(xerror) Is this a mistake or any variant of 1-SE rule ? -- View this message in context: http://www.nabble.com/1-SE-rule-in-mvpart-tp19508242p19508242.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.
