Message-ID: <cdf817830612281318h505c730cy288f00be7e5d747c@mail.gmail.com>
Date: 2006-12-28T21:18:45Z
From: Weiwei Shi
Subject: CV by rpart/mvpart
In-Reply-To: <20061228194728.36652.qmail@web27511.mail.ukl.yahoo.com>
n-fold cv is easy to be implemented in R by yourself. you can create
10 folds' samples by yourself and disable cv in rpart. Then you can
use the same sample sets to compare different methods.
HTH
weiwei
On 12/28/06, Pedro Ramirez <palmar379 at yahoo.es> wrote:
> Dear R-list,
>
> I am using the rpart/mvpart-package for selecting a right-sized regression tree by 10-fold cross-validation. My question: Is there a possibility to find out for every observation in which of the ten folds it is lying? I want to use the same folds for validating another regression method (moving averages) in order to choose the better one.
>
> Thanks a lot,
> Pedro
>
>
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--
Weiwei Shi, Ph.D
Research Scientist
GeneGO, Inc.
"Did you always know?"
"No, I did not. But I believed..."
---Matrix III