Study BDT parameters

[JYoo001]

Issue description

Currently the xgboost parameters for the BDT are set by the default parameters in bdtMaker.py : L289-L299 and L63-L379. There currently exists no documentation about what how these parameters were selected and studying these parameters could provide useful insight on the BDT.

Documentation about what each of these parameters do exists on the xgboost website:
https://xgboost.readthedocs.io/en/stable/r_docs/R-package/docs/reference/xgb.params.html#arg-eval-metric

Tasks

• Retrain the BDT with new parameters
• Evaluate SHAP features, ROC curves, cutflow, etc.

Existing material to start off

• Listed above