PR welcome!

On 02/26/2015 01:19 PM, Pierre-Luc Bacon wrote:
Thanks ! Perhaps the documentation could be updated to make this clear ?

Pierre-Luc

On Tue, Feb 24, 2015 at 5:24 AM, Arnaud Joly <a.j...@ulg.ac.be <mailto:a.j...@ulg.ac.be>> wrote:

    Hi Pierre-Luc,

    This is the same criterion, but with a different name.
    The maximisation of the reduction of variance at each split
    will lead to minimize the mean squared error.

    Cheers,
    Arnaud


    On 24 Feb 2015, at 01:53, Pierre-Luc Bacon <pba...@cs.mcgill.ca
    <mailto:pba...@cs.mcgill.ca>> wrote:

    In the original Extra-Tree papers, the authors use the "relative
    variance reduction" (appendix A) for regression.

    The implementation in Scikit-Learn however suggests a different
    criterion:
    
https://github.com/scikit-learn/scikit-learn/blob/master/sklearn/tree/_tree.pyx#L836

    What was the rational behind this choice ?

    Thanks,
    Pierre-Luc
    
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