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Dr Pere Mato (CERN)13/02/2006, 14:00Software Components and Librariesoral presentationThe Applications Area of the LCG Project is concerned with developing, deploying and maintaining that part of the physics applications software and associated supporting infrastructure software that is common among the LHC experiments. This area is managed as a number of specific projects with well-defined policies for coordination between them and with the direct participation of the...Go to contribution page
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Dr Alexandre Vaniachine (ANL)13/02/2006, 14:20Software Components and Librariesoral presentationIn preparation for data taking, the ATLAS experiment has run a series of large-scale computational exercises to test and validate distributed data grid solutions under development. ATLAS experience in prototypes and production systems of Data Challenges and Combined Test Team provided various database connectivity requirements for applications: connection management, online-offline...Go to contribution page
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Caitriana Nicholson (University of Glasgow), Caitriana Nicholson (Unknown), Dr David Malon (ARGONNE NATIONAL LABORATORY)13/02/2006, 14:40Software Components and Librariesoral presentationThe ATLAS experiment will deploy an event-level metadata system as a key component of support for data discovery, identification, selection, and retrieval in its multi-petabyte event store. ATLAS plans to use the LCG POOL collection infrastructure to implement this system, which must satisfy a wide range of use cases and must be usable in a widely distributed environment. The system...Go to contribution page
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Dr Jamie Shiers (CERN)13/02/2006, 15:00Software Components and Librariesoral presentationThe past decade has been an era of sometimes tumultuous change in the area of Computing for High Energy Physics. This talk addresses the evolution of databases in HEP, starting from the LEP era and the visions presented during the CHEP 92 panel "Databases for High Energy Physics" (D. Baden, B. Linder, R. Mount, J. Shiers). It then reviews the rise and fall of Object Databases as a "one...Go to contribution page
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Mr Philippe Canal (FERMILAB)13/02/2006, 16:00Software Components and Librariesoral presentationSince version 4.01/03, we have continued to strenghten and improve the ROOT I/O system. In particular we extended and optimized support for all STL collections, including adding support for member-wise streaming. The handling of TTree objects was also improved by adding support for indexing of chains, for using bitmap algorithm to speed up search, and for accessing an sql table through...Go to contribution page
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Dr Ioannis Papadopoulos (CERN, IT Department, Geneva 23, CH-1211, Switzerland)13/02/2006, 16:20Software Components and Librariesoral presentationThe COmmon Relational Abstraction Layer (CORAL) is a C++ software system,developed within the context of the LCG persistency framework, which provides vendor-neutral software access to relational databases with defined semantics. The SQL-free public interfaces ensure the encapsulation of all the differences that one may find among the various RDBMS flavours in terms of SQL syntax and data...Go to contribution page
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Dr Andrea Valassi (CERN)13/02/2006, 16:40Software Components and Librariesoral presentationSince October 2004, the LCG Conditions Database Project has focused on the development of COOL, a new software product for the handling of experiment conditions data. COOL merges and extends the functionalities of the two previous software implementations developed in the context of the LCG common project, which were based on Oracle and MySQL. COOL is designed to minimise the...Go to contribution page
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Dr Douglas Smith (STANFORD LINEAR ACCELERATOR CENTER)13/02/2006, 17:00Software Components and Librariesoral presentationThe data production and analysis system of the BaBar Experiment has evolved through a series of changes from a day when the first data were taken in May 1999. The changes, in particular, have also involved persistent technologies used to store the event data as well as a number of related databases. This talk is about CDB - the distributed Conditions Database of the BaBar Experiment. The...Go to contribution page
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Marco Clemencic (CERN)13/02/2006, 17:20Software Components and Librariesoral presentationThe LHCb Conditions Database (CondDB) project aims to provide the necessary tools to handle non-event time-varying data. The LCG project COOL provides a generic API to handle this type of data and an interface to it has been integrated into the LHCb framework Gaudi. The interface is based on the Persistency Service infrastructure of Gaudi, allowing the user to load it at run-time only if...Go to contribution page
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Dr Sergey Linev (GSI DARMSTADT)13/02/2006, 17:40Software Components and Librariesoral presentationROOT already has powerful and flexible I/O, which potentially can be used for storage of objects data in SQL databases. Usage of ROOT I/O together with SQL database will provide advanced functionality like: guarantee of data integrity, logging of data changes, possibility to rollback changes and lot of other features, provided by modern databases. At the same time data representation...Go to contribution page
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Dr Stefan Roiser (CERN)14/02/2006, 14:00Software Components and Librariesoral presentationReflection is the ability of a programming language to introspect and interact with it's own data structures at runtime without prior knowledge about them. Many recent languages (e.g. Java, Python) provide this ability inherently but it is lacking for C++. This paper will describe a software package, Reflex, which provides reflection capabilities for C++. Reflex was developed in the...Go to contribution page
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Dr David Lawrence (Jefferson Lab)14/02/2006, 14:20Software Components and Librariesoral presentationThe JLab Introspection Library (JIL) provides a level of introspection for C++ enabling object persistence with minimal user effort. Type information is extracted from an executable that has been compiled with debugging symbols. The compiler itself acts as a validator of the class definitions while enabling us to avoid implementing an alternate C++ preprocessor to generate dictionary...Go to contribution page
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Dr Steffen G. Kappler (III. Physikalisches Institut, RWTH Aachen university (Germany))14/02/2006, 14:40Software Components and Librariesoral presentationPhysics analyses at modern collider experiments enter a new dimension of event complexity. At the LHC, for instance, physics events will consist of the final state products of the order of 20 simultaneous collisions. In addition, a number of todayโs physics questions is studied in channels with complex event topologies and configuration ambiguities occurring during event analysis....Go to contribution page
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Dr Ketevi Adikle Assamagan (Brookhaven National Laboratory), PAT ATLAS (ATLAS)14/02/2006, 15:00Software Components and Librariesoral presentationThe physics program at the LHC includes precision tests of the Standard Model (SM), the search for the SM Higgs boson up to 1 TeV, the search for the MSSM Higgs bosons in the entire parameter space, the search for Super Symmetry, sensitivity to alternative scenarios such as compositeness, large extra dimensions, etc. This requires general purpose detectors with excellent performance....Go to contribution page
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Dr Lorenzo Moneta (CERN)14/02/2006, 16:00Software Components and Librariesoral presentationLHC experiments obtain needed mathematical and statistical computational methods via the coherent set of C++ libraries provided by the Math work package of the ROOT project. We present recent developments of this work package, formed from the merge of the ROOT and SEAL activities: (1) MathCore, a new core library, has been developed as a self contained component encompassing basic...Go to contribution page
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Philippe Canal (FNAL)14/02/2006, 16:20Software Components and Librariesoral presentationWe have initiated a repository of tools, software, and technique documentation for techniques used in HEP and related physics disciplines, which are related to statistics. Fermilab is to assume custodial responsibility for the operation of this Phystat repository, which will be in the nature of an open archival repository. Submissions of appropriate packages, papers, modules and code...Go to contribution page
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Dr Alberto Ribon (CERN), Dr Andreas Pfeiffer (CERN), Dr Barbara Mascialino (INFN Genova), Dr Maria Grazia Pia (INFN GENOVA), Dr Paolo Viarengo (IST Genova)14/02/2006, 16:40Software Components and Librariesoral presentationMany Goodness-of-Fit tests have been collected in a new open-source Statistical Toolkit: Chi-squared, Kolmogorov-Smirnov, Goodman, Kuiper, Cramer-von Mises, Anderson-Darling, Tiku, Watson, as well as novel weighted formulations of some tests. None of the Goodness-of-Fit tests included in the toolkit is optimal for any analysis case. Statistics does not provide a universal recipe to...Go to contribution page
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Dr Ilya Narsky (California Institute of Technology), Mr Julian Bunn (CALTECH), Dr Julian Bunn (CALTECH), Julian Bunn (California Institute of Technology (CALTECH))14/02/2006, 17:00Software Components and Librariesoral presentationModern analysis of high energy physics (HEP) data needs advanced statistical tools to separate signal from background. A C++ package has been implemented to provide such tools for the HEP community. The package includes linear and quadratic discriminant analysis, decision trees, bump hunting (PRIM), boosting (AdaBoost), bagging and random forest algorithms, and interfaces to the...Go to contribution page
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Dr Alberto De Min (Politecnico di Milano)14/02/2006, 17:20Software Components and Librariesoral presentationIn the last few decades operations research has made dramatic progress in providing efficient algorithms and fast software implementations to solve practical problems related to a wide range of disciplines, from logistics to finance, from political sciences to digital image analysis. After a brief introduction to the most used techniques, such as linear and mixed-integer programming,...Go to contribution page
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Edmund Erich Widl (Institute for High Energy Physics, Vienna)14/02/2006, 17:40Software Components and Librariesoral presentationThe Inner Tracker of the CMS experiment consists of approximately 20,000 sensitive modules in order to cope with the bunch crossing rate and the high particle multiplicity expected in the environment of the Large Hadron Collider. For such a big number of modules conventional methods for track-based alignment face serious difficulties because of the large number of alignment parameters and...Go to contribution page
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Rene Brun (CERN)15/02/2006, 14:00Software Components and Librariesoral presentationHEP experiments have generally complex geometries that have to be represented and modelled for several purposes. The most important are simulation and reconstruction, where people generally do rely on some "ideal" geometry representation that is modelled within the simulation framework. The problem that the "real" experiment geometry contains perturbations to this "perfectly aligned" model...Go to contribution page
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Dr Witold Pokorski (CERN)15/02/2006, 14:20Software Components and Librariesoral presentationThe Geometry Description Markup Language (GDML) is a specialised XML-based language designed as an application-independent persistent format for describing the detector geometries. It serves to implement 'geometry trees' which correspond to the hierarchy of volumes a detector geometry can be composed of, and to allow to identify the position of individual solids, as well as to describe the...Go to contribution page
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Dr Maxim POTEKHIN (BROOKHAVEN NATIONAL LABORATORY)15/02/2006, 14:40Software Components and Librariesoral presentationThe STAR Collaboration is currently migrating its simulation software based on Geant3, to the Root-based Virtual Monte Carlo Framework. One critical component of the framework is the mechanism of the Geometry Description, which comprises both the geometry model as used in the application, and the external language that allows the users to define and maintain the detector configuration on...Go to contribution page
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Ms Niranjani S (Department of Information Technology, Mohamed Sathak A.J. College of Engineering, 43, Old Mahabalipuram Road, Sipcot IT Park, Egatur, Chennai - 603 103, India.)15/02/2006, 15:00Software Components and Librariesoral presentationThe enormity of data obtained in scientific experiments often necessitates a suitable graphical representation for analysis. Surface contour is one such graphical representation which renders a pictorial view that aids in easy data interpretation. It is essentially a two-dimensional visualization of a three-dimensional surface plot. Very recently, it has been shown that Super Heavy...Go to contribution page
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Rene Brun (CERN)15/02/2006, 16:00Software Components and Librariesoral presentationWe present an overview of the common viewer architecture (TVirtualViewer3D interface and TBuffer3D shape hierarchy) used by all 3D viewers. This ensures clients of the viewers are decoupled from the viewers, and free of specific drawing code. We detail progress on new OpenGL viewer - the primary development focus, including architecture (publish 'on demand' model, caching, native shapes,...Go to contribution page
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Dr Valeri FINE (BROOKHAVEN NATIONAL LABORATORY)15/02/2006, 16:20Software Components and Librariesoral presentationThis talk presents an overview of the main components of a unique set of tools, in use in the STAR experiment, born from the fusion of two advanced technologies: the ROOT framework and libraries and the Qt GUI and event handling package. Together, they allow creating software packages and help resolving complex data-analysis or visualization problems, enhance computer simulation or help...Go to contribution page
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Vakhtang Tsulaia (UNIVERSITY OF PITTSBURGH)15/02/2006, 16:40Software Components and Librariesoral presentationWe describe an event visualization package in use in ATLAS. The package is based upon Open Inventor and its HEPVIs extensions. It is integrated into ATLAS's analysis framework, is modular and open to user extensions, co-displays the real detector description/simulation (GeoModel/GEANT) geometry together with event data, and renders in real time on regular laptop computers, using their...Go to contribution page
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Dr Julius Hrivnac (LAL)15/02/2006, 17:00Software Components and Librariesoral presentationHuge requirements on computing resources have made it difficult to run Frameworks of some new HEP experiments on the users' personal workstations. Fortunately, new software technology allows us to give users back at least a bit of the user-friendliness they were used to in the past. A Java Analysis Studio (JAS) plugin has been developed, which accesses the Python API of the Atlas Offline...Go to contribution page
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Matevz Tadel (CERN)15/02/2006, 17:20Software Components and Librariesoral presentationALICE Event Visualization Environment (AEVE) is a general framework for visualization of detector geometry and event-related data being developed for the ALICE experiment. Its design is guided by the large raw event size (80 MBytes) and an even larger footprint of a full simulation--reconstruction pass (1.5 TBytes). An extensible pre-processing mechanism needed to reduce the data volume,...Go to contribution page
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Matevz Tadel (CERN)15/02/2006, 17:40Software Components and Librariesoral presentationGled is an OO research framework for fast prototyping of applications in distributed and multi-threaded envirnoments with support for direct data interaction and dynamic visualization. It is an extension of the ROOT framework and thus inherits its core features, including object serialization, versatile I/O infrastructure (files with inner directory structures, trees, rootd), CINT -- the...Go to contribution page
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Dr Mikhail Kirsanov (CERN)16/02/2006, 14:00Software Components and Librariesoral presentationThe library of Monte Carlo generator tools maintained by LCG (GENSER) guarantees the centralized software and physics support for the simulation of fundamental interactions, and is currently widely adopted by the LHC collaborations. While the activity in the LCG Phase I was mostly concentrating in the standardization, integration and maintenance of the existing Monte Carlo...Go to contribution page
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Dr Ben Waugh (University College London)16/02/2006, 14:20Software Components and Librariesoral presentationA common problem in particle physics is the requirement to reproduce comparisons between data and theory when the theory is a (general purpose) Monte Carlo simulation and the data are measurements of final state observables in high energy collisions. The complexity of the experiments, the obervables and the models all contribute to making this a highly non-trivial task. We describe an...Go to contribution page
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Mr Piotr Golonka (INP Cracow, CERN)16/02/2006, 14:40Software Components and Librariesoral presentationSolving the 'simulation=experiment' equation, which is the ultimate task of every HEP experiment, becomes impossible without computer simulation techniques. HEP Monte Carlo simulations, traditionally written as FORTRAN codes, became complex computational projects: their rich physical content needs to be matched with the software organization of the experimental collaborations to make them...Go to contribution page
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Wim Lavrijsen (LBNL)16/02/2006, 15:00Software Components and Librariesoral presentationEclipse is a popular, open source, development platform and application framework. It provides extensible tools and frameworks that span the complete software development lifecycle. Plugins exist for all the major parts that today make up the physicist software toolkit in ATLAS: programming environments/editors for C++ and python, browsers for CVS and SVN, networking with ssh and sftp,...Go to contribution page
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