I just saw in the prelimenary program for JSM '03, there will be (at least) 5 talks on random forest (one from our group), two of which will address the issue of tuning mtry, judging form the abstracts. If I may do a bit of advertising: I was asked to organized a roundtable luncheon at the JSM on multiple trees. I'd welcome anyone interested in this area to come. Cheers, Andy
-----Original Message----- From: Wiener, Matthew [mailto:matthew_wiener at merck.com] Sent: Tuesday, April 15, 2003 10:00 AM To: r-help at stat.math.ethz.ch Subject: RE: [R] rpart vs. randomForest I can echo that in data I've worked with (separate from the data Andy Liaw has worked with), fiddling with mtry doesn't make a whole lot of difference. To the extent it makes any difference at all, the default value tends to be near the optimum. Matt Wiener -------------------------------------------------------------- ----------------
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