Zobrazeno 1 - 10
of 449
pro vyhledávání: '"Zech, G"'
Autor:
Zech, G.
The energy test is a powerful binning-free, multi-dimensional and distribution-free tool that can be applied to compare a measurement to a given prediction (goodness-of-fit) or to check whether two data samples originate from the same population (two
Externí odkaz:
http://arxiv.org/abs/1804.10599
The statistics of the sum of random weights where the number of weights is Poisson distributed has important applications in nuclear physics, particle physics and astrophysics. Events are frequently weighted according to their acceptance or relevance
Externí odkaz:
http://arxiv.org/abs/1309.1287
The publication by Gagunashvili [arXiv:1011.0662] suffers from several caveats: i) The method is based upon the false assumption that the median of chi square distributed random variables is chi square distributed. ii) The information contained in th
Externí odkaz:
http://arxiv.org/abs/1209.1830
Various distribution free goodness-of-fit test procedures have been extracted from literature. We present two new binning free tests, the univariate three-region-test and the multivariate energy test. The power of the selected tests with respect to d
Externí odkaz:
http://arxiv.org/abs/math/0207300
Autor:
Collaboration, HERA-B Inner Tracker, Bagaturia, Y., Baruth, O., Dreis, H. B., Eisele, F., Gorbunov, I., Gradl, S., Gradl, W., Hausmann, S., Hildebrandt, M., Hott, T., Keller, S., Krauss, C., Lomonosov, B., Negodaev, M., Richter, C., Robmann, P., Schmidt, B., Straumann, U., Truoel, P., Visbeck, S., Walter, T., Werner, C., Werthenbach, U., Zech, G., Zeuner, T., Ziegler, M.
Publikováno v:
Nucl.Instrum.Meth.A490:223,2002; ICFA Instrum.Bull.24:54-84,2002
The results of five years of development of the inner tracking system of the HERA-B experiment and first experience from the data taking period of the year 2000 are reported. The system contains 184 chambers, covering a sensitive area of about 20 * 2
Externí odkaz:
http://arxiv.org/abs/hep-ex/0204011
We present a new class of multivariate binning-free and nonparametric goodness-of-fit tests. The test quantity \emph{energy} is a function of the distances of observed and simulated observations in the variate space. The simulation follows the probab
Externí odkaz:
http://arxiv.org/abs/hep-ex/0203010
Publikováno v:
Nucl.Instrum.Meth.A487:308-313,2002
Groove chambers with different pitch and gap height have been tested. Gas amplifications of the order of a few times 10$^{3}$ have been obtained. Combining a groove structure with a GEM pre-amplification foil a gas gain of 10$^{5}$ was reached. The d
Externí odkaz:
http://arxiv.org/abs/nucl-ex/0108003
Autor:
Zech, G.
Publikováno v:
Eur.Phys.J.direct C4 (2002) 12
Frequentist (classical) and the Bayesian approaches to the construction of confidence limits are compared. Various examples which illustrate specific problems are presented. The Likelihood Principle and the Stopping Rule Paradox are discussed. The pe
Externí odkaz:
http://arxiv.org/abs/hep-ex/0106023
Autor:
Zech, G.
Classical confidence limits are compared to Bayesian error bounds by studying relevant examples. The performance of the two methods is investigated relative to the properties coherence, precision, bias, universality, simplicity. A proposal to define
Externí odkaz:
http://arxiv.org/abs/hep-ex/0004011
Publikováno v:
Nucl.Instrum.Meth.A423:297-302,1999
Gas electron multipliers (GEMs) have been overcoated with a high resistivity 10e14 - 10e15 Ohms / square amorphous carbon layer. The coating avoids charging up of the holes and provides a constant gain immediately after switching on independent of th
Externí odkaz:
http://arxiv.org/abs/physics/9807039