[R] anyway to force rpart() to include a specific predictor

[Weiwei Shi]

just my2cent:

could you make a derived feature by including the desired predictor in
each of features you use to present to rpart?

(by the way, if I can understand your question right, I assume rpart
picks only one predictor each time at each node)

Best,

Weiwei

On 11/26/07, Wensui Liu <liuwensui at gmail.com> wrote:
> If I understand correctly, rpart() will pick predictor at each node
> automatically. I am wondering if there is a way to force rpart()
> including a specific predictor. The reason I am asking is that I'd
> like to use rpart() to detect interaction terms for some variables.
>
> Thanks.
>
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-- 
Weiwei Shi, Ph.D
Research Scientist
GeneGO, Inc.

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