نتایج جستجو برای: mrc
تعداد نتایج: 4492 فیلتر نتایج به سال:
In this paper we study the MapReduce Class (MRC) defined by Karloff et al., which is a formal complexity-theoretic model of MapReduce. We show that constant-round MRC computations can decide regular languages and simulate sublogarithmic space-bounded Turing machines. In addition, we prove hierarchy theorems for MRC under certain complexity-theoretic assumptions. These theorems show that suffici...
Addresses: Department of Biochemistry and Goodman Cancer Centre, McGill University, 3655 Promenade Sir-William-Osler, Montréal, Québec, Canada, H3G1Y6. Epigenetic Regulation and Chromatin Architecture Group, Berlin Institute for Medical Systems Biology, Max-Delbrück Centre for Molecular Medicine, Robert-Rössle Strasse, Berlin-Buch 13125, Germany. Genome Function Group, MRC Clinical Sciences Cen...
This paper analyses the outage probability and average bit error rate (ABER) of a multiuser Transmit Antenna Selection/Maximal-ratio combining (TAS/MRC) system over equally correlated η-μ fading channels. In TAS/MRC system the best antenna, based on channel state information (CSI) is used for information transmission and MRC is performed in the receiver. The expressions of PDF for SNR of the sy...
We examine the problem of jointly selecting the number of components and variables in finite mixture regression models. We find that the Akaike information criterion is unsatisfactory for this purpose because it overestimates the number of components, which in turn results in incorrect variables being retained in the model. Therefore, we derive a new information criterion, the mixture regressio...
The Rayleigh conjecture on the representation of the scattered field in the exterior of an obstacle D is widely used in applications. However this conjecture is false for some obstacles. AGR introduced the Modified Rayleigh Conjecture (MRC). In this paper we present a version of the MRC based on an optimal choice of sources. The method is implemented and tested for various 2D and 3D obstacles i...
By: John Duncan MRC Applied Psychology Unit, Cambridge, England Glyn W. Humphreys Birkbeck College, University of London, London, England Financial support was provided by the MRC Applied Psychology Unit, where the work was carried out. The second author's research is also supported by grants from the Medical Research Council, Economic and Social Research Council, and Science and Engineering Re...
This paper discusses, in a multiclass classification setting, the issue of choice so-called categorical classifier, which is procedure or criterion that transforms probabilities produced by probabilistic classifier into single category class. The standard Bayes Classifier (BC), but it has some limits with rare classes. studies performance BC versus two alternatives, are Max Difference (MDC) and...
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