R help - Feb 2006 - Classification of Imbalanced Data

Hi,
I'm looking to perform  a classification analysis on an imbalanced data 
set  using random Forest and I'd like to reproduce the weighted random 
forest analysis proposed in the Chen, Liaw & Breiman paper "Using
Random
Forest to Learn Imbalanced Data"; can I use the R package randomForest 
to perform such analysis? What is the easiest way to accomplish this task?
Thanks,
Paolo Sonego

The implementation of weighted RF is still on the to-do list for the
package.  Use Breiman & Cutler's Fortran code for now.

Andy

From: portnoy at supereva.it
> 
> Hi,
> I'm looking to perform  a classification analysis on an 
> imbalanced data 
> set  using random Forest and I'd like to reproduce the 
> weighted random 
> forest analysis proposed in the Chen, Liaw & Breiman paper 
> "Using Random 
> Forest to Learn Imbalanced Data"; can I use the R package 
> randomForest 
> to perform such analysis? What is the easiest way to 
> accomplish this task?
> Thanks,
> Paolo Sonego
> 
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