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randomForest get tree

2 messages · helen.mills at yale.edu, Liaw, Andy

#
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
#
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
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