[R] Decision Trees

[Prof Brian Ripley]

Please check the licence conditions for C4.5: it is basically commercial.
You are not allowed to use the published source code, and I am not allowed 
to show you the source code I bought, which I am not allowed to `use for 
commercial purposes or gain'.

WEKA includes a re-implementation of the ideas behind C4.5, but not C4.5.


On Mon, 8 Mar 2004 Benjamin.STABLER at odot.state.or.us wrote:

> I am familiar with the rpart and tree packages for classification and
> regression trees.  However, quite a bit of the research in the
> transportation community relating to decision trees uses the C4.5 family of
> algorithms by Quinlan.  Are there any plans to make a C4.5 (or a derivative
> of it) available to R?  If not, then I might use the WEKA Java package (
> http://www.cs.waikato.ac.nz/ml/weka) that implements a Java version of C4.5.
> Thanks.  

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595