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See detailQ wie Quasi und Quer
Heimböckel, Dieter UL

Article for general public (2012)

Detailed reference viewed: 28 (0 UL)
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See detailQ&A with Data Scientists: Christopher Schommer
Schommer, Christoph UL

in Operational Database Management Systems (2017)

Interviews with Data Scientists; see: http://www.odbms.org/2017/01/qa-with-data-scientists-christopher-schommer/

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See detailQ-value functions for decentralized POMDPs
Oliehoek, Frans A.; Vlassis, Nikos UL

in Proc Int. Joint Conf. on Autonomous Agents and Multi-Agent Systems (2007)

Planning in single-agent models like MDPs and POMDPs can be carried out by resorting to Q-value functions: a (near-) optimal Q-value function is computed in a recursive manner by dynamic programming, and ... [more ▼]

Planning in single-agent models like MDPs and POMDPs can be carried out by resorting to Q-value functions: a (near-) optimal Q-value function is computed in a recursive manner by dynamic programming, and then a policy is extracted from this value function. In this paper we study whether similar Q-value functions can be defined in decentralized POMDP models (Dec-POMDPs), what the cost of computing such value functions is, and how policies can be extracted from such value functions. Using the framework of Bayesian games, we argue that searching for the optimal Q-value function may be as costly as exhaustive policy search. Then we analyze various approximate Q-value functions that allow efficient computation. Finally, we describe a family of algorithms for extracting policies from such Q-value functions. [less ▲]

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See detailQ-value Heuristics for Approximate Solutions of Dec-POMDPs
Oliehoek, F. A.; Vlassis, Nikos UL

in Proc. AAAI Spring Symp. on Game Theoretic and Decision Theoretic Agents (2007)

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See detailQAM to Circular Isomorphic Constellations
Kayhan, Farbod UL

in 8th Advanced Satellite Multimedia Systems Conference (ASMS/SPSC), Palma de Mallorca, Spain, 2016 (2016, September)

Employing high order constellations is inevitable in order to achieve higher spectral efficiency in satellite communication systems. In DVB-S2X standard, constellations with up to 256 points have been ... [more ▼]

Employing high order constellations is inevitable in order to achieve higher spectral efficiency in satellite communication systems. In DVB-S2X standard, constellations with up to 256 points have been included. However, optimizing such high order constellations is a difficult task. In this paper we propose a very simple constellation design based on the radial map from QAM constellations to non-uniform APSK constellations. Our method provides a systematic way to generate a family of optimized high order constellations. We show that gains larger than 0.5 dB can be obtained with respect to the DVB-S2X constellations with 256 points. Even though the proposed constellations are essentially sub-optimal (in terms of maximizing the mutual information), they provide a very competitive test benchmark for the performance of high order constellations. Moreover, the proposed construction potentially allows for an efficient one-dimensional soft detection by an inverse mapping to the QAM. Finally, further optimization techniques are discussed. [less ▲]

Detailed reference viewed: 78 (5 UL)
See detailQASBA '11: Proceedings of the International Workshop on Quality Assurance for Service-Based Applications
Bianculli, Domenico UL; Guinea, Sam; Metzger, Andrea et al

Book published by ACM (2011)

Detailed reference viewed: 18 (0 UL)
See detailQASBA 2013: Proceedings of the 2013 International Workshop on Quality Assurance for Service-Based Applications
Bianculli, Domenico UL; Guinea, Sam; Hallé, Sylvain et al

Book published by ACM (2013)

Detailed reference viewed: 29 (5 UL)
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See detailQoE for spatial cognitive systems
Alodeh, Maha UL

in IEEE International Conference on Communications (2012)

Detailed reference viewed: 42 (6 UL)
See detailQTI Standard: The Challenge of Designing Usable and Compliant Interfaces
Doublet, Sophie UL; Raber, Dieter; Sipasseuth, Somsack

Scientific Conference (2014, September 22)

Detailed reference viewed: 46 (22 UL)
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See detailQu'est-ce qu'un Luxembourgeois? Histoire de la nationalité luxembourgeoise du Code Napoléon à nos jours
Scuto, Denis UL

in Hemecht : Zeitschrift für Luxemburger Geschichte = Revue d'Histoire Luxembourgeoise (2006), (58/1), 73-96

Detailed reference viewed: 30 (3 UL)
See detailQu'est-ce qu'un Luxembourgeois? Histoire de la nationalité luxembourgeoise du Code Napoléon à nos jours: une histoire sous influence française, belge et allemande
Scuto, Denis UL

in Reuter, Antoinette; Ruiz, Jean-Philippe (Eds.) Retour de Babel. Itinéraires, mémoires et citoyenneté (2007)

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See detailQu’est-ce qu’une "création" ? Dialogue entre art et droit
Tore, Gian Maria UL; Gellé, Guillaume

Article for general public (2011)

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See detailQu’est-ce que la justice ?
Lefort, Elisabeth UL

in Le Portique (2013)

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See detailQu’est-ce que la psychothérapie empiriquement fondée ?
Billieux, Joël UL; Blairy, Sylvie; Boulanger, Marie et al

in Revue Francophone de Clinique Comportementale et Cognitive (2012), 17(4), 5-7

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See detailQu'est-ce que, en droit, une exception?
Heuschling, Luc UL

in Fatin-Rouge Stefanini; Vidal-Naquet, Ariane (Eds.) La norme et ses exceptions. Quels défis pour la règle de droit ? (2014)

Detailed reference viewed: 106 (3 UL)
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See detailQuack Corporate Governance III? The Capital Requirements Directive IV´s Rules on Board Compensation
Zetzsche, Dirk Andreas UL; Enriques, Luca

in Theoretical Inquiries in Law 16 (2015)

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See detailQuack Corporate Governance III? The Harvard Law School Forum on Corporate Governance and Financial Regulation
Zetzsche, Dirk Andreas UL; Enriques, Luca

in Theoretical Inquiries in Law (2014)

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See detailQuadcopter see and avoid using a fuzzy controller
Olivares Mendez, Miguel Angel UL; Mejias, Luis; Campoy, Pascual et al

in Uncertainty modeling in knowlege engineering and decision making : proceedings of the 10th International FLINS Conference (2012)

Unmanned Aerial Vehicles (UAVs) industry is a fast growing sector. Nowadays, the market offers numerous possibilities for off-the-shelf UAVs such as quadrotors or fixed-wings. Until UAVs demonstrate ... [more ▼]

Unmanned Aerial Vehicles (UAVs) industry is a fast growing sector. Nowadays, the market offers numerous possibilities for off-the-shelf UAVs such as quadrotors or fixed-wings. Until UAVs demonstrate advance capabilities such as autonomous collision avoidance they will be segregated and restricted to flight in controlled environments. This work presents a visual fuzzy servoing system for obstacle avoidance using UAVs. To accomplish this task we used the visual information from the front camera. Images are processed off-board and the result send to the Fuzzy Logic controller which then send commands to modify the orientation of the aircraft. Results from flight test are presented with a commercial off-the-shelf platform. [less ▲]

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See detailQuadratic Surface Lyapunov Functions in Global Stability Analysis of Saturation Systems
Goncalves, Jorge UL

in Proceedings of the American Control Conference (2001)

Detailed reference viewed: 16 (0 UL)