10-15 March 2019
Steinmatte conference center
Europe/Zurich timezone

Uncertainty reduction by gradient descent

13 Mar 2019, 18:20
20m
Steinmatte Room A

Steinmatte Room A

Oral Track 2: Data Analysis - Algorithms and Tools Track 2: Data Analysis - Algorithms and Tools

Speaker

Mr Victor Estrade (LRI)

Description

Data analysis based on forward simulation often require the use of a machine learning model for statistical inference of the parameters of interest.
Most of the time these learned model are trained to discriminate events between backgrounds and signals to produce a 1D score, which is used to select a relatively pure signal region.
The training of the model does not take into account the final objective that is to estimate the values of the parameters of interest.
Those measurements also depends on other parameters, denoted as nuisance parameters, that will induce systematic errors on estimated values.
We propose to explore learning methods that directly minimize the measurement error (both statistical and systematic) on a realistic case coming from HEP.

Primary authors

Mr Victor Estrade (LRI) David Rousseau (LAL-Orsay, FR) Cecile Germain (Universite Paris Sud) Isabelle Guyon

Presentation materials