41,673 research outputs found
Uncertainty in Soft Temporal Constraint Problems:A General Framework and Controllability Algorithms forThe Fuzzy Case
In real-life temporal scenarios, uncertainty and preferences are often
essential and coexisting aspects. We present a formalism where quantitative
temporal constraints with both preferences and uncertainty can be defined. We
show how three classical notions of controllability (that is, strong, weak, and
dynamic), which have been developed for uncertain temporal problems, can be
generalized to handle preferences as well. After defining this general
framework, we focus on problems where preferences follow the fuzzy approach,
and with properties that assure tractability. For such problems, we propose
algorithms to check the presence of the controllability properties. In
particular, we show that in such a setting dealing simultaneously with
preferences and uncertainty does not increase the complexity of controllability
testing. We also develop a dynamic execution algorithm, of polynomial
complexity, that produces temporal plans under uncertainty that are optimal
with respect to fuzzy preferences
SUSY and BSM in the face of LHC-14
In this talk I review the motivations for physics beyond the Standard Model
at the TeV scale and the prospects for their detection in the second Run of
LHC. Then I focus in the supersymmetric case, paying special attention to the
formulation and implications of the Natural SUSY scenario.Comment: Contribution to the proceedings of the X SILAFAE, Medellin, Colombia,
November 24-28 201
Three Approaches to Generating Texts in Different Styles
Natural Language Generation (nlg) systems generate texts in English and other human languages from non-linguistic input data. Usually there are a large number of possible texts that can communicate the input data, and nlg systems must choose one of these. We argue that style can be used by nlg systems to choose between possible texts, and explore how this can be done by (1) explicit stylistic parameters, (2) imitating a genre style, and (3) imitating an individual’s style
Beyond the Standard Model for Hillwalkers
In the first lecture, the Standard Model is reviewed, with the aim of seeing
how its successes constrain possible extensions, the significance of the
apparently low Higgs mass indicated by precision electroweak experiments is
discussed, and defects of the Standard Model are examined. The second lecture
includes a general discussion of the electroweak vacuum and an introduction to
supersymmetry, motivated by the gauge hierarchy problem. In the third lecture,
the phenomenology of supersymmetric models is discussed in more detail, with
emphasis on the information provided by LEP data. The fourth lecture introduces
Grand Unified Theories, with emphases on general principles and on neutrino
masses and mixing. Finally, the last lecture contains short discussions of some
further topics, including supersymmetry breaking, gauge-mediated messenger
models, supergravity, strings and phenomenology.Comment: Lectures presented at 1998 European School of High-Energy Physics, 64
pages LaTeX, 37 eps figures, uses cernrep.cl
One Right-handed Neutrino to Generate Complete Neutrino Mass Spectrum in the Framework of NMSSM
The see-saw mechanism is usually applied to explain the lightness of
neutrinos. The traditional see-saw mechanism introduces at least two
right-handed neutrinos for the realistic neutrino spectrum. In the case of
supersymmetry, loop corrections can also contribute to neutrino masses, which
lead to the possibility to generate the neutrino spectrum by introducing just
one right-handed neutrino. To be realistic, MSSM suffers from the mu problem
and other phenomenological difficulties, so we extend NMSSM (the MSSM with a
singlet S) by introducing one single right-handed neutrino superfield (N) and
relevant phenomenology is discussedComment: 20 pages, 7 figure
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