> Is there a way to do this modification in rpart or is there any other
> function I could use that would consider interdependence in the
> response variable?
This feature already exists: the "xval" option can be a vector of
integers that defines the "left out" groups. First all the 1's are le
On Mon, Jul 04, 2011 at 09:22:23AM -0400, Katerine Goyer wrote:
>
> Hello,
>
> I am using
> the rpart function (from the rpart package) to do a regression tree that
> would describe
> the behaviour of a fish species according to several environmental variables.
> For each fish (sampling unit),
One way around hacking rpart is to write code to do K fold samples
based on unit outside rpart, then build trees using training sets and
summarize scores on testing sets.
Weidong Gu
On Mon, Jul 4, 2011 at 9:22 AM, Katerine Goyer wrote:
>
>
>
>
>
>
>
> Hello,
>
>
>
> I am using
> the rpart functi
Hello,
I am using
the rpart function (from the rpart package) to do a regression tree that would
describe
the behaviour of a fish species according to several environmental variables.
For each fish (sampling unit), I have repeated observations of the response
variable, which means that
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