cms_hh_proc_interface

Interface providing feature computation from ROOT LorentzVectors for CMS RunII hh->bbtautau DNN

Installation

1. cmsrel CMSSW_10_2_15
2. cd CMSSW_10_2_15/src
3. cmsenv
4. git clone [email protected]:GilesStrong/cms_hh_proc_interface.git
5. scram b -j 12

Testing

Building the tool in CMSSW will generate two executables in CMSSW_10_2_16/test/slc7_amd64_gcc700/ called: testfeatcomp which will generate the example and test the feature computation object; and testevtproc which will check the event processing object.

Usage

The interface consists of two objects:

• FeatComp computes features and categorical values from ROOT::Math::LorentzVector<ROOT::Math::PxPyPzM4D<float>> objects and other event information and returns it as a map of feature name to float value (FeatComp::process). If all is set to true then all features will be computed, otherwise a set of feature names can be passed to requested, in which case only the features listed will be computed (NB the order of the returned map is not guaranteed to match the order of requested features!). The choice of whether to use CSV or Deep CSV can can be controlled using use_deep_csv.
• EvtProc is the main interface for processing events from ROOT::Math::LorentzVector<ROOT::Math::PxPyPzM4D<float>> objects and other event information by wrapping FeatComp and adding additional information (EvtFeat::process). If all is set to true then all features will be computed, otherwise a set of feature names can be passed to requested, in which case only the features listed will be computed and returned in the requested order. The choice of whether to use CSV or Deep CSV can can be controlled using use_deep_csv. If a vector of floats is required, i.e. for passing straight to a DNN, then EvtFeat::process_as_vec can be called instead. Additionally, EvtFeat::process_to_vec can be passed a vector of unique pointers to floats, which will be modified in place to the computed values; useful when processing ntuples to save the outputs.

Notes

• The enum objects Channel and Year are defined in feat_comp.hh.