Download presentation

Presentation is loading. Please wait.

Published byReilly Frierson Modified over 2 years ago

1
Group A: Limits and p-values with nuisance parameters Banff, July 2006

2
1) Limits with nuisance parameters: Joel producing updated version of ‘challenge’ Different people to try different methods 1’) Kyle et al: Extended problem for LHC Higgs search 2) p-values: Long note by Luc

3
Luc Demortier: 6 p-value questions for Statisticians Why 5 σ? Look-elsewhere and FDR? 8 methods for systematics and p-values. Optimal statistic? Non-standard L ratio: Importance sampling for 5 σ Fishing with Poisson: Use half data Alternatives to p-values? Posterior probabilities? Convenor for p-values

4
Specific talks James Bueno: Calculator for Bayesian limits Tony Burnett: Looking for 5 σ sources in GLAST Lots of false sources. Tom Junk: Not necessarily disaster Eric Marchand: Lower limit on frequentist coverage for Bayes intervals for bounded continuous parameters Wants to extend to Poisson Example of HPD Bayes interval with 0% coverage for some θ Gunter Zech: Paradoxes about choosing between H1 and H2 via χ 2 or L -ratio

5
Specific talks Giovanni Punzi: Fully frequentist method for Poisson + 1 nuisance param Little overcoverage Extendable to more parameters? Luc Demortier: Reference analysis Applied to Punzi problem of 1/p measurement

6
Specific talks Kyle Cranmer: Marked Poisson for LHC Higgs Many channels Cranmer and Conrad: Profile L Full calculation with shapes slow, so use profile L to select candidates at ≥3 σ for full treatment Bodhi Sen: Conf intervals with nuisance parameters Also looks for signal (s > 0). But depends on prior for s=0, so better to look for N s ≠ 0. Working on coverage properties for Bayesian upper limits for Poisson with nuisance param Joel Heinrich: Turn Poisson with discrete n into continuous measurement of t

7
Thank You! Weather forecasters BIRS and PIMS Participants for working at Workshop Statisticians for advice and patience Convenors: Joel, Luc, David, Byron, Nancy

8
Thank You! Weather forecasters BIRS and PIMS Participants for working at Workshop Statisticians for advice and patience Convenors: Joel, Luc, David, Byron, Nancy Nancy

Similar presentations

OK

1 Nuisance parameters and systematic uncertainties Glen Cowan Royal Holloway, University of London IoP Half.

1 Nuisance parameters and systematic uncertainties Glen Cowan Royal Holloway, University of London IoP Half.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on edge detection tutorial Ppt on democratic and non democratic countries Ppt on 4 types of sentences Ppt on post office protocol Ppt on asymptotic notation of algorithms book Ppt on non ferrous minerals in water Ppt on formal education define Ppt on power line carrier communication download Ppt on rc phase shift oscillator derivation Ppt on electricity for class 10th date