I am dealing with an effective field theory scenario where my signal (the interference term) has almost equal proportion of negative and positive weight events. To try and train the samples, I was following this suggestion: TMVA Toolkit for Multi Variate Analysis / Re: [TMVA-users] BDT training with negative weights., i.e., using the BDTG method and using the “Pray” option. However, I am getting the following error and am unable to train the samples.
: signal and background histograms have different or invalid dimensions:
I am attaching my code and the problematic root file required for the training.
I would greatly appreciate if you could guide me as to how I can train such samples properly.