ACAT 2010

Session

Tuesday, 23 February - Data Analysis - Algorithms and Tools

23 Feb 2010, 14:00

Jaipur, India

0. Likelihood-based Particle Flow Algorithm at CDF for Accurate Energy Measurement and Identification of Hadronically Decaying Tau Leptons

Andrey Elagin (Texas A&M University (TAMU))

23/02/2010, 14:00

Data Analysis - Algorithms and Tools

Parallel Talk

We present a new technique for accurate energy measurement of hadronically decaying tau leptons. The technique was developed and tested at CDF experiment at the Tevatron. The technique employs a particle flow algorithm complemented with a likelihood-based method for separating contributions of overlapping energy depositions of spatially close particles. In addition to superior energy...

60. Classifying extremely imbalanced data sets

Markward Britsch (Max-Planck-Institut fuer Kernphysik (MPI)-Unknown-Unknown)

23/02/2010, 14:25

Data Analysis - Algorithms and Tools

Parallel Talk

Imbalanced data sets containing much more background than signal instances are very common in particle physics, and will also be characteristic for the upcoming analyses of LHC data. Following up the work presented at ACAT 2008, we use the multivariate technique presented there (a rule growing algorithm with the meta-methods bagging and instance weighting) on much more imbalanced data sets,...

11. SFrame - A high-performance ROOT-based framework for HEP analysis

Dr Attila Krasznahorkay (New York University)

23/02/2010, 14:50

Data Analysis - Algorithms and Tools

Parallel Talk

In a typical offline data analysis in high-energy-physics a large number of collision events are studied. For each event the reconstruction software of the experiments stores a large number of measured event properties in sometimes complex data objects and formats. Usually this huge amount of initial data is reduced in several analysis steps, selecting a subset of interesting events and...

28. Online Filtering for Radar Detection of Meteors

Mr Eric LEITE (Federal University of Rio de Janeiro)

23/02/2010, 15:15

Data Analysis - Algorithms and Tools

Parallel Talk

The penetration of a meteor on Earth’s atmosphere results on the creation of an ionized trail, able to produce the forward scattering of VHF electromagnetic waves. This fact inspired the RMS (Radio Meteor Scatter) technique, which consists in the meteor detection using passive radar. Considering the characteristic of continuous acquisition inherent to the radar detection technique and the...

19. Absorbing systematic effects to obtain a better background model in a search for new physics

Mr Stephan Horner (Albert-Ludwigs-Universitaet Freiburg)

23/02/2010, 16:10

Data Analysis - Algorithms and Tools

Parallel Talk

This contribution discusses a novel approach to estimate the Standard Model backgrounds based on modifying Monte Carlo predictions within their systematic uncertainties. The improved background model is obtained by altering the original predictions with successively more complex correction functions in signal-free control selections. Statistical tests indicate when sufficient compatibility...

10. Analysis of Photoluminescence measurement data from interdiffused Quantum Wells by Real coded Quantum inspired Evolutionary Algorithm

Mr Ashish Mani (Dayalbagh Educational Institute)

23/02/2010, 16:35

Data Analysis - Algorithms and Tools

Parallel Talk

Reliable analysis of any experimental data is always difficult due to the presence of noise and other types of errors. This paper analyzes data obtained from photoluminescence measurement, after the annealing of interdiffused Quantum Well Hetrostructures, by a recently proposed Real coded Quantum inspired Evolutionary Algorithm (RQiEA). The proposed algorithm directly measures interdiffusion...