BDT

TMVAClassification_MC.C

(only for training and test of simulation data)

Description: This code provides several functions to create input files for the training and test of the BDTs; and a main function to perform the BDTs. List of functions:

1) prepareTMVAtree() --> It requires a vertex_file with MC information (mp_motherID, mp_eventID, charm_daug, etc...) The file in input is usually called "vtx_MC_analysis.root" It provides in output the file "tmva_input_vertices.root" that is used as input for the BDT on interaction vertices.

2) prepareTMVAtree2nd() --> It requires a vertex_file with MC information (mp_motherID, mp_eventID, charm_daug, etc...) and a file with the BDT values evaluated on interaction vertices. The file in input are usually called "vtx_MC_analysis.root" and "vtx_BDT_data_evaluated.root" It provides in output the file "tmva_input_vertices2nd.root" that is used as input for the BDT on decay vertices.

3) prepareTMVAtreeDS() --> It requires a file where the decay search is already performed. The file in input is usually called "annotated_data_result.root". It provides in output the file "tmva_input_verticesDS.root" that is used as input for the decay search BDT.

4) TMVAClassification_MC() --> The script allows to perform the BDT on interaction vertices, decay vertices and the BDT for the decay search. Different cases are possible:

• Case 1: BDT on interaction vertices --> Input files like "tmva_input_vertices.root".

• Case 2: BDT on decay vertices --> 2 Input files like "tmva_input_vertices2nd.root" for the signal (charm vertices) and the background (the remaining part).

• Case 3: BDT for the decay search --> Input files like "tmva_input_verticesDS.root". It provides in output the directories with the datasets with the weigths of the tested network and the "TMVA.root" to check the BDT results and distributions.

TMVAClassification.C

(only for data and simulation evaluation)

Description: This code provides several functions to create input files for the evaluation of the BDTs; List of functions:

1) prepareTMVAtree() --> It requires a vertex file usually called "vertextree_test.root" It provides in output the file "tmva_input_vertices.root" that is used as input for the BDT evaluation of interaction vertices usually called "vtx_BDT_data_evaluated.root".

2) prepareTMVAtree2nd() --> It requires a vertex_file and a file with the BDT values evaluated on interaction vertices The file in input are usually called "vertextree_test.root" and "vtx_BDT_data_evaluated.root" It provides in output the file "tmva_input_vertices2nd.root" that is used as input for the BDT evaluation on decay vertices.

3) prepareTMVAtreeDS() --> It requires a file where the decay search is already performed. The file in input is usually called "annotated_data_result.root". It provides in output the file "tmva_input_verticesDS.root" that is used as input for the decay search BDT evaluation.

TMVAClassificationApplication.C

Description: This code performs the evaluation of the BDT for the interaction vertices.

It requires in input the file "tmva_input_vertices.root" and provides in output the file "vtx_BDT_data_evaluated.root"

TMVAClassificationApplication2nd.C

Description: This code performs the evaluation of the BDT for the decay vertices. It requires in input the file "tmva_input_vertices2nd.root" and provides in output the file "vtx_BDT_data_evaluated2nd.root"

TMVAClassificationApplicationDS.C

Description: This code performs the evaluation of the BDT for the decay search. It requires in input the file "tmva_input_verticesDS.root" and provides in output the file "vtx_BDT_data_evaluatedDS.root"

Usage:

# input files

root -l .L TMVAClassification_MC.C or (.L TMVAClassification.C)

prepareTMVAtree()

prepareTMVAtree2nd()

prepareTMVAtreeDS()

# BDTs training and test

root -l ./TMVAClassification_MC.C\(\"BDT,Likelihood\"\)

# BDT evaluation

root -l TMVAClassificationApplication.C

root -l TMVAClassificationApplication2nd.C

# BDT results

root -l TMVA::TMVAGui("TMVA.root")