Quick disclaimer: I'm new to the list and I'm not sure if I'm
sending this
to the correct forum. If there is a better place for questions like these,
please let me know!
Dear R List,
I'm interested in modifying a regression tree algorithm to use the
difference between a control and a dosed sample as its dependent variable.
I was wondering if anyone knew where I could find code to implement a basic
chaid algorithm. Is it possible to access the code inside of R? Is there
another place I can find the basic algorithm already coded.
I'd prefer a chaid-like algorithm over a c&rt like algorithm, as my
sample is small. I'm a reasonably good programmer, a background in C++ and
experience in many different languages.
I'd very much appreciate any thoughts.
Thank you!
David Cobey
PS. Of course, if this has been done before, I'd be very grateful for the
opportunity to save myself the trouble of reprogramming it myself!
[[alternative HTML version deleted]]
Quick disclaimer: I'm new to the list and I'm not sure if I'm
sending this
to the correct forum. If there is a better place for this questions, please
let me know!
Dear R List,
I'm interested in modifying a regression tree algorithm to use the
difference between a control and a dosed sample as its dependent variable.
I was wondering if anyone knew where I could find code to implement a basic
chaid algorithm. Is it possible to access the code inside of R? Is there
another place I can find the basic algorithm already coded.
I'd prefer a chaid-like algorithm over a c&rt like algorithm, as my
sample is small. I'm a reasonably good programmer, a background in C++ and
experience in many different languages.
I'd very much appreciate any thoughts.
Thank you!
David Cobey
PS. Of course, if this has been done before, I'd be very grateful for the
opportunity to save myself the trouble of reprogramming it myself!
[[alternative HTML version deleted]]
on 08/27/2008 09:26 AM David Cobey said the following:> I'm interested in modifying a regression tree algorithm to use the > difference between a control and a dosed sample as its dependent variable. > I was wondering if anyone knew where I could find code to implement a basic > chaid algorithm. Is it possible to access the code inside of R? Is there > another place I can find the basic algorithm already coded.don't know about your specific target, but as a general question of seeing the code: to see a function's code in R, just type its name at the prompt without parentheses - that will show the code, rather than invoke the function.