1. Electron -converted photon –pi0 discrimination
Xiao Hong

2. single pi0 sample

3. Electron and positron sample

4. Pi ele
Reco ele:0:77.9% :15.6%(can’t discriminate, we can only use the left part)
1:19.6% :6.9%
2:1% :77.4%

5. single pi0 sample

6. Electron and positron sample

7. single pi0 sample

8. Electron and positron sample

9. Pi0 ele Reco pho:0:3.5% 0:2.1% 1:95.3% 1:2.8% 2:1% 2:93.7%
1:95.3% :2.8%
2:1% :93.7%
Conv pho:0:50% :15.6%
1:49% :12.4%
2:1% :70.6%

10. Electron and photon discrimination
1.use the variables which are used in the note to see the result(MLP:70%;BDT:75%)
2.add some variables to improve the result(MLP:75%;BDT:85%)
Significance=d0/d0error;
Eop:I tried innerp,outerp and p at vertex,because p at vertex is calculated by extrapolation so it is not so exact,so I didn’t use it. Ordinarily speaking,the more closer p to beamline,the more closer Eop to1.So finally I chose innerp.
eopt;
ele_pho_SC_dr:electron sample will be more close to 1

11. Overtraining check

21. Electron and pi0 discrimination
1.use the variables which are used in the note to see the result(MLP:70%;BDT:72%)
2.add some variables to improve the result(MLP:75%;BDT:85%)

27. Ele pi

33. Ele pho discrimination
--- MLP : Ranking result (top variable is best ranked)
--- MLP :
--- MLP : Rank : Variable : Importance
--- MLP : 1 : ele_innereop : 4.321e+02
--- MLP : 2 : ele_recpho_dr : 3.061e+02
--- MLP : 3 : ele_innerlay : 2.628e+02
--- MLP : 4 : ele_convpho_dr : 1.367e+02
--- MLP : 5 : ele_phoSCeopt : 7.254e+01
--- MLP : 6 : ele_d : 6.496e+01
--- MLP : 7 : dist : 2.837e+01
--- MLP : 8 : ele_eopt : 1.772e+01
--- MLP : 9 : significance : 4.915e+00
--- MLP : 10 : dcot : 2.942e-02
--- MLP : 11 : ele_recpho_deta : 1.567e-02
--- MLP : 12 : ele_convpho_deta : 2.543e-04

34. --- BDT : --------------------------------------------------
--- BDT : Rank : Variable : Variable Importance
--- BDT : 1 : ele_convpho_dr : 3.960e-01
--- BDT : 2 : significance : 1.147e-01
--- BDT : 3 : ele_convpho_deta : 9.627e-02
--- BDT : 4 : ele_recpho_dr : 6.662e-02
--- BDT : 5 : ele_d : 6.032e-02
--- BDT : 6 : ele_innerlay : 5.759e-02
--- BDT : 7 : dist : 5.749e-02
--- BDT : 8 : ele_eopt : 4.323e-02
--- BDT : 9 : ele_innereop : 3.267e-02
--- BDT : 10 : ele_recpho_deta : 3.079e-02
--- BDT : 11 : dcot : 2.308e-02
--- BDT : 12 : ele_phoSCeopt : 2.126e-02

35. Ele pi discrimination
--- MLP : Ranking result (top variable is best ranked)
--- MLP :
--- MLP : Rank : Variable : Importance
--- MLP : 1 : ele_innereop : 6.734e+02
--- MLP : 2 : ele_recpho_dr : 6.641e+02
--- MLP : 3 : ele_innerlay : 4.307e+02
--- MLP : 4 : ele_d : 3.630e+02
--- MLP : 5 : ele_phoSCeopt : 3.544e+02
--- MLP : 6 : ele_convpho_dr : 1.504e+02
--- MLP : 7 : dist : 2.299e+01
--- MLP : 8 : ele_eopt : 1.007e+01
--- MLP : 9 : significance : 1.501e+00
--- MLP : 10 : dcot : 1.836e-02
--- MLP : 11 : ele_recpho_deta : 8.816e-03
--- MLP : 12 : ele_convpho_deta : 1.203e-04

36. --- BDT : Rank : Variable : Variable Importance
--- BDT : 1 : ele_convpho_dr : 4.653e-01
--- BDT : 2 : significance : 1.274e-01
--- BDT : 3 : ele_phoSCeopt : 1.034e-01
--- BDT : 4 : ele_d : 8.338e-02
--- BDT : 5 : dist : 5.633e-02
--- BDT : 6 : ele_innerlay : 3.343e-02
--- BDT : 7 : ele_recpho_dr : 3.340e-02
--- BDT : 8 : ele_innereop : 3.083e-02
--- BDT : 9 : ele_eopt : 3.041e-02
--- BDT : 10 : ele_recpho_deta : 1.596e-02
--- BDT : 11 : ele_convpho_deta : 1.298e-02
--- BDT : 12 : dcot : 7.219e-03

37. Events are used half for training and half for testing
Ele:172563
Pho:72142
Pi0:94292