Message-ID: <39B6DDB9048D0F4DAD42CB26AAFF0AFA0562C2D5@usctmx1106.merck.com>
Date: 2008-03-11T18:38:10Z
From: Liaw, Andy
Subject: randomForest get tree
In-Reply-To: <20080311132215.0a8xvn9kg8osgw0k@www.mail.yale.edu>
Graphing: Not really. You might do somw work and get Rgraphviz to
produce the tree, but I'm not sure how useful that is.
Interpretation: You can read the tree just like any other decision
trees. However, remember that the splits are chosen with some
randomness, so I'm not sure how much trust I would place on any
particular tree. Breiman did not design random forests so that the
trees can be interpreted the usual way.
Andy
From: helen.mills at yale.edu
> All,
> What purpose does the getTree function have in Random Forest?
> Can you graph it
> as you can in rpart and can it be interpreted in the same way?
>
> Helen Mills Poulos
> Yale School of Forestry
>
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