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ACAT 2008

3โ€“7 Nov 2008
Ettore Majorana Foundation and Centre for Scientific Culture
Europe/Zurich timezone

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Session

Data Analysis - Algorithms and Tools

3 Nov 2008, 14:00
Ettore Majorana Foundation and Centre for Scientific Culture

Ettore Majorana Foundation and Centre for Scientific Culture

Via Guarnotta, 26 - 91016 ERICE (Sicily) - Italy Tel: +39-0923-869133 Fax: +39-0923-869226 E-mail: hq@ccsem.infn.it

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  1. 1. Multi-threaded event processing with JANA
    Dr David Lawrence (Jefferson Lab)
    03/11/2008, 14:00
    2. Data Analysis
    Parallel Talk
    The C++ reconstruction framework JANA has been written to support the next generation of Nuclear Physics experiments at Jefferson Lab in anticipation of the 12GeV upgrade. This includes the GlueX experiment in the planned 4th experimental hall "Hall-D". The JANA framework was designed to allow multi-threaded event processing with a minimal impact on developers of reconstruction software....
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  2. 2. TMVA- the toolkit for multivariate data analysis
    Joerg Stelzer (DESY)
    03/11/2008, 14:25
    2. Data Analysis
    Parallel Talk
    Multivariate data analysis techniques are becoming increasingly important for high energy physics experiments. TMVA is a tool, integrated in the ROOT environment, which allows easy access to sophisticated multivariate classifiers allowing for a widespread use of these very effective data selection techniques. It furthermore provides a number of pre-processing capabilities and...
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  3. 14. PDE-FOAM - a probability-density estimation method based on self-adapting phase-space binning
    Dr Dominik Dannheim (CERN)
    03/11/2008, 14:50
    2. Data Analysis
    Parallel Talk
    Probability-Density Estimation (PDE) is a multivariate discrimination technique based on sampling signal and background densities in a multi-dimensional phase space. The signal and background densities are defined by event samples (from data or monte carlo) and are evaluated using a binary search tree (range searching). This method is a powerful classification tool for problems with highly...
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  4. 18. The Role of Interpreters in High Performance Computing
    Axel Naumann (CERN)
    03/11/2008, 15:15
    2. Data Analysis
    Parallel Talk
    Compiled code is fast, interpreted code is slow. There is not much we can do about it, and it's the reason why interpreters use in high performance computing is usually restricted to job submission. I will show where interpreters make sense even in the context of analysis code, and what aspects have to be taken into account to make this combination a success.
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  5. 64. The ATLAS Conditions Database Model for the Muon Spectrometer
    Dr Monica Verducci (INFN RomaI)
    03/11/2008, 16:10
    1. Computing Technology
    Parallel Talk
    The ATLAS Muon System has extensively started to use the LCG conditions database project 'COOL' as the basis for all its conditions data storage both at CERN and throughout the worlwide collaboration as decided by the ATLAS Collaboration. The management of the Muon COOL conditions database will be one of the most challenging applications for Muon System, both in terms of data volumes and...
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  6. 47. PARADIGM, a Decision Making Framework for Variable Selection and Reduction in High Energy Physics
    Sergei V. Gleyzer (Florida State University)
    03/11/2008, 16:35
    2. Data Analysis
    Parallel Talk
    In high energy physics, variable selection and reduction are key to a high quality multivariate analysis. Initial variable selection often leads to a variable set cardinality greater than the underlying degrees of freedom of the model, which motivates the needs for variable reduction and more fundamentally, a consistent decision making framework. Such a framework called PARADIGM, based on a...
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  7. 26. Track Reconstruction and Muon Identification in the Muon Detector of the CBM Experiment at FAIR
    Mr Andrey Lebedev (GSI, Darmstadt / JINR, Dubna)
    03/11/2008, 17:00
    2. Data Analysis
    Parallel Talk
    The Compressed Baryonic Matter (CBM) experiment at the future FAIR accelerator at Darmstadt is being designed for a comprehensive measurement of hadron and lepton production in heavy-ion collisions from 8-45 AGeV beam energy, producing events with large track multiplicity and high hit density. The setup consists of several detectors, including the silicon tracking system (STS) placed in a...
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  8. 211. Fireworks: A Physics Event Display for CMS
    Dr Christopher Jones (CORNELL UNIVERSITY)
    03/11/2008, 17:25
    2. Data Analysis
    Parallel Talk
    Event displays in HEP are used for many different purposes, e.g. algorithm debugging, commissioning, geometry checking and physics studies. The physics studies case is unique since few user are likely to become experts on the event display, the breadth of information all such users will want to see is quite large although any one user may only want a small subset of information and the best...
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  9. 30. An overview of the b-Tagging algorithms in the CMS Offline software
    Mr Christophe Saout (CMS, CERN & IEKP, University of Karlsruhe)
    03/11/2008, 17:50
    2. Data Analysis
    Parallel Talk
    The CMS Offline software contains a widespread set of algorithms to identify jets originating from the weak decay of b-quarks. Different physical properties of b-hadron decays like lifetime information, secondary vertices and soft leptons are exploited. The variety of selection algorithms range from simple and robust ones, suitable for early data-taking and online environments as the trigger...
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