Difference between revisions of "JEF meeting, October 15, 2021"
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** [https://halldweb.jlab.org/wiki/images/9/96/BackgroundSuppressionPeterson.pdf Background Suppression via Multivariate Analysis] Chase | ** [https://halldweb.jlab.org/wiki/images/9/96/BackgroundSuppressionPeterson.pdf Background Suppression via Multivariate Analysis] Chase | ||
** [https://halldweb.jlab.org/wiki-private/index.php/Double_%CF%800_background 2π0 simulation] Simon | ** [https://halldweb.jlab.org/wiki-private/index.php/Double_%CF%800_background 2π0 simulation] Simon | ||
| + | |||
| + | =Minutes= | ||
| + | Attendees: Igal, Bill, Igor, Olga, Chase, Varun, Zisis, Jon, Azizah, Susan, Liping, Phil, Tim B., Arshak, Jane, S.T. | ||
| + | * Chase gave an update on his work using TMVA to background suppression for the η→π0γγ channel | ||
| + | ** Compared Boosted Decision Trees (BDT) to Fisher discriminants | ||
| + | *** BDT method works better | ||
| + | ** Issue: possible over-training: adjusted several parameters to mitigate | ||
| + | ** Looked at different combinations of input variables (e.g. elasticity, transverse momentum,...) | ||
| + | ** Defined figure-of-merit, found optimal BDT cut value --> produces a nice peak at the η mass for simulated events! | ||
| + | * Simon gave a brief update on his work on a generator to simulate π0π0 background | ||
Latest revision as of 14:41, 15 October 2021
Meeting time and location= 9:30 am EST (JLab time) Bluejeans only
Connection instructions
We are using BlueJeans Video/Audio conferencing. Our meeting ID number is 992533564. Click "Expand" for more details.
- Make sure you have created a BlueJeans account via your JLab CUE account using this link:
- http://jlab.bluejeans.com (You should only need to do this once)
- If connecting via Web Browser: click this link (no passcode is needed):
- If connecting via Phone: Dial one of the following numbers and then enter the meeting ID above and hit "#" or "##"
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- Enter meeting ID above
Agenda
- SICCAS crystals
- Module fabrication
- COMCAL tests, TAC running, etc.
- Data analysis
- Simulations
Minutes
Attendees: Igal, Bill, Igor, Olga, Chase, Varun, Zisis, Jon, Azizah, Susan, Liping, Phil, Tim B., Arshak, Jane, S.T.
- Chase gave an update on his work using TMVA to background suppression for the η→π0γγ channel
- Compared Boosted Decision Trees (BDT) to Fisher discriminants
- BDT method works better
- Issue: possible over-training: adjusted several parameters to mitigate
- Looked at different combinations of input variables (e.g. elasticity, transverse momentum,...)
- Defined figure-of-merit, found optimal BDT cut value --> produces a nice peak at the η mass for simulated events!
- Compared Boosted Decision Trees (BDT) to Fisher discriminants
- Simon gave a brief update on his work on a generator to simulate π0π0 background
