2009.05.12 Variable distributions after LDA at 70% efficiency

Cut optimization with Fisher's LDA classifier

For this post LDA results with Set1 and Set2 has been used
Note, that LDA for various pre-shower bins is trained independetly

pdf-links with results for pre1=0 and pre2=0 (pre-shower bin 1):

• before LDA cut (figures are not sorted)
• after LDA cut @70% efficiency for Set 2 (figures are not sorted)

Figures below are for 0.004<pre-shower1<0.01 (pre-shower bin 4).

Photon pt cut: pt> 7, pre-shower bin: 0.004 < pre1 < 0.01
LDA cut with efficiency @ 70%

Set1 vs. Set2

What is added in Set2 compared to Set1:
smaller cluster size information (r2x1, r2x2), post-shower energy

Figure 1: r2x1
before LDA cut

LDA cut for Set1

LDA cut for Set2

Figure 2: r2x2
before LDA cut

LDA cut for Set1

LDA cut for Set2

Figure 3: r3x3
before LDA cut

LDA cut for Set1

LDA cut for Set2

Figure 4: Residual distance
before LDA cut

LDA cut for Set1

LDA cut for Set2

Other variables with LDA Set2 cut

Note: Only plos for LDA cut @70 efficiency for Set2 are shown

Figure : number of charge particles around photon

 

Figure 5: number of EEMC tower around photon

 

Figure 6: number of BEMC tower around photon

 

Figure 7: photon-jet pt balance

 

Figure 8: SMD energy in 5 centrapl strips

 

Figure 9: SMD energy in 25 central strips: u and v plane separately (plot for V plane)

 

Figure 10: 2x1 cluster energy

 

Figure 11: 2x2 cluster energy

 

Figure 12: 3x3 cluster energy

 

Figure 13: tower energy in r=0.7 radius

 

Figure 14: 3x3 pre-shower1 energy

 

Figure 15: 3x3 pre-shower2 energy

 

Figure 16: 3x3 post-shower energy

 

Figure 17: photon pt

 

Figure 18: jet pt

 

Figure 19: z vertex