This might help: http://www.jstatsoft.org/v28/i05/paper
Max On Sun, Apr 18, 2010 at 1:24 PM, kevinzy <kevin.nuem...@googlemail.com> wrote: > > Hi,guys. i got a few questions about the R code during my self study of this > language. plz help me ^_^ > > for example,use the dataset Vanveer.4000 in library(MASS), > > 1.if i used the first 300 genes, how to find the single trees and random > forests by using R? And how to see their classification performance? > > 2.how to compute the error rate by using 10-fold cross validation? and how > to produce a ROC curve? > > 3.how to find the numbers of "good" outcome are misclassified? > > Thank you very much for your help. > > > -- > View this message in context: > http://n4.nabble.com/About-Random-Forests-ROC-Misclassified-tp2014981p2014981.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. > -- 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.
