Message-ID: <39B6DDB9048D0F4DAD42CB26AAFF0AFA0562C79F@usctmx1106.merck.com>
Date: 2008-03-12T16:55:53Z
From: Liaw, Andy
Subject: More digits in prediction using random forest object
In-Reply-To: <21da85430803111625x26dbf872p2c881e51d23b0355@mail.gmail.com>
How many trees are you growing in the forest? If you grow a 100-tree
forest, the possible predictions (for a two-class data) would simply be
{0, 0.01, 0.02, ..., 0.99, 1}
Then, of course, if you only grow three trees, the predictions can only
be
{0, 1/3, 2/3, 1}
You can ask for as many digits as R can give you, but it won't do you
any good.
Andy
From: Nagu
>
> I need to get more digits in predicting a test sample with a random
> forests object. Format or options(digits=) do nothing. Any ideas?
>
> Thank you,
> Nagu
>
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