Training TMVA with different signal/background variable names

TMVA
1

Is it possible to train a classifier using two tuples (signal/background, MC/data) that have different variable names? For example, some variables are called PIDx in background, and PIDx_corr in the signal tree.

I guess I’m imagining something like TMVA::DataLoader::AddVariable with two TString expression arguments. But any workaround (without renaming the variables in the (large) tuples) would do. Thanks!

2

Hi @jruizvid; I am sure @moneta has the answer to your question.

Cheers,
J.

3

Anybody knows if this is possible?
(reminder after few days with no answer)

4

Hi,
No this is not possible, variable must have the same name, because what then will be called when using the trained method in the real un-labeled data ?
There is an easy solution, create a snapshot of the original tree with the variables renamed.

Lorenzo