Re: [R] How to know if a classification tree is predicitve or not?

From: ward schrooten <wardschrooten_at_yahoo.com>
Date: Sun 24 Apr 2005 - 20:38:08 EST


Hello,
I was just thinking about the same question. The output in CART shows an overal sensitivity and specificity of the tree built, plus cross-validation result of overall sens and spec. I find this very useful for interpretation of the value of a tree. I didn't find this in the R output?

Greetings,
Ward Schrooten

Message: 5
Date: Fri, 22 Apr 2005 13:04:44 +0200
From: Uwe Ligges <ligges@statistik.uni-dortmund.de> Subject: Re: [R] How to know if a classification tree is predicitve or

        not?
To: Laure Maton <maton@toulouse.inra.fr> Cc: r-help@stat.math.ethz.ch
Message-ID:
<4268DA4C.4070701@statistik.uni-dortmund.de> Content-Type: text/plain; charset=us-ascii; format=flowed

Laure Maton wrote:

> Hello,
> I would like to know how to know if a classification
tree is
predictive
> or not ?
> Is it sufficient to analyse results of cross
validation?

Depends on your interpretation of "predictive", maybe you want to look
at stuff like sensitivity and specificity as well.

Uwe Ligges

> Thanks for your help
> Laure Maton
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sun Apr 24 20:43:04 2005

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