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Computer Science | 2008

OPTIMIZATION OF TAU IDENTIFICATION IN ATLAS EXPERIMENT USING MULTIVARIATE TOOLS

Łukasz Janyst; A. Kaczmarska; Tadeusz Szymocha; Marcin Wladyslaw Wolter; A. Zemla

Elementary particle physics experiments, which search for very rare processes, require the efficient analysis and selection algorithms able to separate a signal from the overwhelming background. Four learning machine algorithms have been applied to identify τ leptons in the ATLAS experiment: projective likelihood estimator (LL), Probability Density Estimator with Range Searches (PDE-RS), Neural Network, and the Support Vector Machine (SVM). All four methods have similar performance, which is significantly better than the baseline cut analysis. This indicates that the achieved background rejection is close to the maximal achievable performance.


Archive | 2007

TMVA - Toolkit for Multivariate Data Analysis with ROOT : Users guide

A. Hocker; X. Prudent; Jan Therhaag; Y. Mahalalel; Moritz Backes; Rustem Ospanov; Maciej Kruk; M. Jachowski; Alexander Voight; Arnaud Robert; F. Tegenfeldt; Kamil Kraszewski; Marcin Wladyslaw Wolter; Domikik Dannheim; H. Voss; Krzysztof Danielowski; K. Voss; S. Henrot-Versille; Doug Schouten; Peter Speckmayer; Jan Stelzer; Or Cohen; T. Carli; A. Zemla; A. Krasznahorkay; Eckhard von Toerne; Asen Christov


Annales Umcs, Informatica | 2007

Implementation of the SVM algorithm for high energy physics data analysis.

Marcin Wladyslaw Wolter; A. Zemla

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A. Kaczmarska

Polish Academy of Sciences

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Tadeusz Szymocha

Polish Academy of Sciences

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Peter Speckmayer

Vienna University of Technology

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