R help - Jun 2011 - Decision Trees /Decision Analysis with R?

Hello,

this question is a bit out of the blue.

I am a big R fan and user and in my new job I do some decision
modeling (mostly health economics). For that decision trees are often
used (I guess the most classic example is the investment decision A,
B, and C with different probabilities, what is the expected payoff).
We use a specialized software called TreeAge that some might know.
The basic setup of such simulations is actually very simple and I
guess useful in many fields. So I was wondering whether there is
already a package out there in R that is doing such a thing?

Thanks for any hints!
Best,
Stefan

PS
(By decision tree I don't mean cluster-like analysis of a data set
splitting by identifying decision nods, but the other way around: I
have decision nodes, what is my expected outcome.)

See packages rpart, randomForest, party.

Also, typing "R Decision Trees" produced good google results.

http://www.google.com/search?aq=f&sourceid=chrome&ie=UTF-8&q=R+Decision+Trees

On Wed, Jun 8, 2011 at 7:02 AM, stefan.duke at gmail.com
<stefan.duke at gmail.com> wrote:
> Hello,
>
> this question is a bit out of the blue.
>
> I am a big R fan and user and in my new job I do some decision
> modeling (mostly health economics). For that decision trees are often
> used (I guess the most classic example is the investment decision A,
> B, and C with different probabilities, what is the expected payoff).
> We use a specialized software called TreeAge that some might know.
> The basic setup of such simulations is actually very simple and I
> guess useful in many fields. So I was wondering whether there is
> already a package out there in R that is doing such a thing?
>
> Thanks for any hints!
> Best,
> Stefan
>
> PS
> (By decision tree I don't mean cluster-like analysis of a data set
> splitting by identifying decision nods, but the other way around: I
> have decision nodes, what is my expected outcome.)
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
==============================================Jon Daily
Technician
==============================================#!/usr/bin/env outside
# It's great, trust me.

Hi,

Unfortunately I do not have an answer to this question yet, but it is
something I'm currently examining. We're hoping to construct a template
for
health economic evaluation using decision tree (eventually working up to
more complex modelling methodologies). I'll keep you posted on our progress.

Ian

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