Difference: AnalysisVersion13030 (1 vs. 5)

Revision 5
16 Oct 2009 - Main.TomRockwell
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Analysis Comparisons for Code Version 13030

Run Over D3PDs using the MSU analysis code

Revision 4
13 Oct 2009 - Main.ChipBrock
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Analysis Comparisons for Code Version 13030

Run Over D3PDs using the MSU analysis code

Revision 3
03 Mar 2009 - PatRyan
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Analysis Comparisons for Code Version 13030

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  the merged file. For example, the first event was categorized as training, the second as validation, the third as yield, the fourth as training, and so on. Functionality to randomly assign variables to the different categories will be added in the future.
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Events with negative weights were excluded from the Training sample (why?). Validation samples both with and without events with negative weights were made. The files without events having negative weights are signified by the label NoNeg.
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Events with negative weights were excluded from the Training sample to retain compatibility with SPR, which cannot handle negative weights. Validation samples both with and without events with negative weights were made. The files without events having negative weights are signified by the label NoNeg.
 

Run TMVAnalysis over Training files

For comparison purposes, only the following variables were considered for training:
Revision 2
17 Nov 2008 - PatRyan
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Analysis Comparisons for Code Version 13030

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  -o Background.root
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Note that the number of bins in the classifier outputs is 50. This is set by nbin = 50.

Calculate Significance

Significance.py was run in order to calculate the significance. For now, the significance was taken as Signal/sqrt(Background). A more accurate, and complicated, calculation of the significance will be performed in the future. Events were weighted by a factor of 3 to account for the splitting into training, validation, and yield samples.

The classifier output distributions are shown below for signal and background.
BDT.png

The significance was calculated for different cuts on the classifier output. This was done in two ways, by cutting as you move right across the values on x-axis and by cutting as you move left across the values on the x-axis. Both are shown below.
significanceBDT.Hist.Right.png significanceBDT.Hist.Left.png

Comparisons with Jenny


compare.png
 

-- PatRyan - 14 Nov 2008
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META FILEATTACHMENT attachment="BDT.png" attr="" comment="" date="1226943815" name="BDT.png" path="BDT.png" size="15073" stream="BDT.png" tmpFilename="/usr/tmp/CGItemp1051" user="PatRyan" version="1"
META FILEATTACHMENT attachment="significanceBDT.Hist.Right.png" attr="" comment="Significance calculated from Right" date="1226943238" name="significanceBDT.Hist.Right.png" path="significanceBDT.Hist.Right.png" size="15522" stream="significanceBDT.Hist.Right.png" tmpFilename="/usr/tmp/CGItemp1118" user="PatRyan" version="1"
META FILEATTACHMENT attachment="significanceBDT.Hist.Left.png" attr="" comment="Significance calculated from Left" date="1226943297" name="significanceBDT.Hist.Left.png" path="significanceBDT.Hist.Left.png" size="15793" stream="significanceBDT.Hist.Left.png" tmpFilename="/usr/tmp/CGItemp960" user="PatRyan" version="1"
META FILEATTACHMENT attachment="compare.eps" attr="" comment="" date="1226943738" name="compare.eps" path="BDT.png" size="15073" stream="BDT.png" tmpFilename="/usr/tmp/CGItemp3928" user="PatRyan" version="2"
META FILEATTACHMENT attachment="compare.png" attr="" comment="" date="1226943895" name="compare.png" path="compare.png" size="24442" stream="compare.png" tmpFilename="/usr/tmp/CGItemp1057" user="PatRyan" version="1"
 
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