About the BDT control plot and the decision boundary

Dear Kim,

Oh I just saw them in the user guide and the TMVA GUI, then tried to interpret them to help us understand what’s happening in the training. But it seems not that easy…
Thanks for the explanation.

And BTW I have another question on the Kolmogorov-Smirnov test(to estimate the overfitting) and hope you can help me with the print out:

Testing efficiency compared to training efficiency (overtraining check)
— Perform Kolmogorov-Smirnov tests
— Goodness of signal (background) consistency: 0.572 (0.047)

I have seen in the slides:


Does it mean that the ideal value of the Goodness of signal (background) consistency should be 0.5 for both signal (background) ?

Kind regards,
Hai