Message-ID: <16026.32841.875472.558024@gargle.gargle.HOWL>
Date: 2003-04-14T09:32:57Z
From: Martin Maechler
Subject: rpart vs. randomForest
In-Reply-To: <200304122141.h3CLf0fB025857@mailserver2.hushmail.com>
>>>>> "Anonymous" == <chumpmonkey at hushmail.com>
>>>>> on Sat, 12 Apr 2003 14:41:00 -0700 writes:
Anonymous> Greetings. I'm trying to determine whether to use
Anonymous> rpart or randomForest for a classification
Anonymous> tree. Has anybody tested efficacy formally? I've
Anonymous> run both and the confusion matrix for rf beats
Anonymous> rpart. I've looking at the rf help page and am
Anonymous> unable to figure out how to extract the tree.
Anonymous> But more than that I'm looking for a more
Anonymous> comprehensive user's guide for randomForest
Anonymous> including the benefits on using it with MDS. Can
Anonymous> anybody suggest a general guide? I've been
Anonymous> finding a lot of broken links and cs-type of web
Anonymous> pages rather than an end-user's guide. Also
Anonymous> people's experience on adjusting the mtry param
Anonymous> would be useful. Breiman says that it isn't too
Anonymous> sensitive but I'm curious if anybody has had a
Anonymous> different experience with it. Thanks in advance
Anonymous> and apologies if this is too general.
If you really read Breiman, or alternatively, remember English,
you'll know that a forest has many trees...
Regards,
Martin Maechler <maechler at stat.math.ethz.ch> http://stat.ethz.ch/~maechler/