Dear experts,
I’m a little confused how specificity and sensitivity are computed in TMVA::ROCCurve.
I was under the assumption that they would be determined by looping over a bunch of operating points and finding sEff and bRej at each point. However, these functions ( Sensitivity, Specificity ) appear to do something different.
When I implemented my own roc curve by calculating sEff and bRej for my BDT at 1000 evenly spaced operating points between -1 and 1, I had a very different result.
Thank you!
-Steve