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

Generalization of Homogeneity Tests Used in High Energy Physics Experiments

Not scheduled
20m
Steinmatte conference center

Steinmatte conference center

Hotel Allalin, Saas Fee, Switzerland https://allalin.ch/conference/
Poster Track 2: Data Analysis - Algorithms and Tools Poster Session

Speaker

Jakub Trusina (Czech Technical University (CZ))

Description

In High Energy Physics, tests of homogeneity are used primarily in two cases: for verification that data sample does not differ significantly from numerically produced Monte Carlo sample and for verifying separation of signal from background. Since Monte Carlo samples are usually weighted, it is necessary to modify classical homogeneity tests in order to apply them to weighted samples. In ROOT, the only homogeneity tests that allow testing weighted samples are implemented for binned data. However, after the data are binned the full information is lost. Therefore we compare these ordinary tests with modified versions of the Kolmogorov-Smirnov, Anderson-Darling and Cramér-von Mises tests that use full sample information. The proposed tests are compared by estimating a probability of type-I error which is crucial for a test's reliability.

Primary author

Jakub Trusina (Czech Technical University (CZ))

Co-authors

Jiri Franc (Czech Technical University in Prague) Mr Adam Novotny (Czech Technical University (CZ))

Presentation materials

Peer reviewing

Paper