See http://finzi.psych.upenn.edu/R/Rhelp02a/archive/40898.html
On 10/27/05, David L. Van Brunt, Ph.D. <[EMAIL PROTECTED]> wrote: > Sorry for the repost, but I've really been looking, and can't find any > syntax direction on this issue... > > Just browsing the documentation, and searching the list came up short... I > have some unbalanced data and was wondering if, in a "0" v "1" > classification forest, some combo of these options might yield better > predictions when the proportion of one class is low (less than 10% in a > sample of 2,000 observations). > > Not sure how to specify these terms... from the docs, we have: > > classwt: Priors of the classes. Need not add up to one. Ignored for > regression. > > So is this something like "... classwt=c(.90,.10)" ? I didn't see the syntax > demonstrated. Similar for "strata" and "sampsize" though there is a default > for sampsize that makes sense... not sure how you would make "a vector of > the length the number of strata", however.... > > Pointers? > > -- > --------------------------------------- > David L. Van Brunt, Ph.D. > mailto:[EMAIL PROTECTED] > > -- > --------------------------------------- > David L. Van Brunt, Ph.D. > mailto:[EMAIL PROTECTED] > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html