Multiclass capability for more methods?

TMVA
4

Hi,

To exactly replicate the default weighting of the multiclass version you can use use NormMode=None and manually scale the each input tree by n_0/n_i where n_0 is the number of events in the first class and n_i is the number of events in the current class/tree (assuming there is one class per input tree).

dataloader.AddBackgroundTree(&chain0, n_0/n_0);
dataloader.AddBackgroundTree(&chain1, n_0/n_1);
// ...

EqualNumEvents normalises the number of effective events in each class to the number of events in the first class.

Cheers,
Kim

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