Hi Peter

I am sorry but I did not understand your point. In the more option, I can seeĀ 

numFeatures -- Sets the number of randomly chosen attributes. If 0,
int(log_2(#predictors) + 1)

but how can I get the number of variables for each node? I have 20 features in my dataset.

Thank you

On Tue, Apr 27, 2021 at 12:44 AM Peter Reutemann <fracpete@waikato.ac.nz> wrote:
> If I am using the Random Forest model, how many trees will it have and how many variables would be available for each tree node? I think the default number of trees in Weka is 100 but in that case, how many variables for each tree node?

Copy/paste from the "More" dialog:

numFeatures -- Sets the number of randomly chosen attributes. If 0,
int(log_2(#predictors) + 1) is used.

Cheers, Peter
--
Peter Reutemann
Dept. of Computer Science
University of Waikato, NZ
+64 (7) 577-5304
http://www.cms.waikato.ac.nz/~fracpete/
http://www.data-mining.co.nz/
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