References of "2005"
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See detailRobot planning in partially observable continuous domains
Porta, Josep M.; Spaan, Matthijs T. J.; Vlassis, Nikos UL

in Proc. Robotics: Science and Systems (2005)

We present a value iteration algorithm for learning to act in Partially Observable Markov Decision Processes (POMDPs) with continuous state spaces. Mainstream POMDP research focuses on the discrete case ... [more ▼]

We present a value iteration algorithm for learning to act in Partially Observable Markov Decision Processes (POMDPs) with continuous state spaces. Mainstream POMDP research focuses on the discrete case and this complicates its application to, e.g., robotic problems that are naturally modeled using continuous state spaces. The main difficulty in defining a (belief-based) POMDP in a continuous state space is that expected values over states must be defined using integrals that, in general, cannot be computed in closed from. In this paper, we first show that the optimal finite-horizon value function over the continuous infinite-dimensional POMDP belief space is piecewise linear and convex, and is defined by a finite set of supporting α-functions that are analogous to the α-vectors (hyperplanes) defining the value function of a discrete-state POMDP. Second, we show that, for a fairly general class of POMDP models in which all functions of interest are modeled by Gaussian mixtures, all belief updates and value iteration backups can be carried out analytically and exact. A crucial difference with respect to the α-vectors of the discrete case is that, in the continuous case, the α-functions will typically grow in complexity (e.g., in the number of components) in each value iteration. Finally, we demonstrate PERSEUS, our previously proposed randomized point-based value iteration algorithm, in a simple robot planning problem with a continuous domain, where encouraging results are observed. [less ▲]

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See detailBeyond annotation transfer by homology: novel protein-function prediction methods to assist drug discovery
Ofran, Y.; Punta, M.; Schneider, Reinhard UL et al

in Drug Discovery Today (2005), 10(21), 1475-1482

Every entirely sequenced genome reveals 100s to 1000s of protein sequences for which the only annotation available is 'hypothetical protein'. Thus, in the human genome and in the genomes of pathogenic ... [more ▼]

Every entirely sequenced genome reveals 100s to 1000s of protein sequences for which the only annotation available is 'hypothetical protein'. Thus, in the human genome and in the genomes of pathogenic agents there could be 1000s of potential, unexplored drug targets. Computational prediction of protein function can play a role in studying these targets. We shall review the challenges, research approaches and recently developed tools in the field of computational function-prediction and we will discuss the ways these issues can change the process of drug discovery. [less ▲]

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See detailLa CJCE admet l'irresponsabilité des autorités de contrôle des banques vis-à-vis des déposants
Prüm, André UL

in Revue de Droit Bancaire et Financier (2005), (1),

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See detailPeriodic unmixing of a binary metallic vapor
Maul, J.; Strachnov, I.; Karpuk, S. et al

in Physical Review. B, Condensed Matter and Materials Physics (2005), 72(15),

We report on a type of surface structuring after short pulse laser ablation of a binary alloy. We observe the emergence of a concentric ring structure with changing elemental composition. The composition ... [more ▼]

We report on a type of surface structuring after short pulse laser ablation of a binary alloy. We observe the emergence of a concentric ring structure with changing elemental composition. The composition changes are interpreted by condensation of the ambient ablation vapor due to stress wave excitations in the ablation spot. [less ▲]

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See detailPerseus: Randomized point-based value iteration for POMDPs
Spaan, M. T. J.; Vlassis, Nikos UL

in Journal of Artificial Intelligence Research (2005), 24

Partially observable Markov decision processes (POMDPs) form an attractive and principled framework for agent planning under uncertainty. Point-based approximate techniques for POMDPs compute a policy ... [more ▼]

Partially observable Markov decision processes (POMDPs) form an attractive and principled framework for agent planning under uncertainty. Point-based approximate techniques for POMDPs compute a policy based on a finite set of points collected in advance from the agent's belief space. We present a randomized point-based value iteration algorithm called Perseus. The algorithm performs approximate value backup stages, ensuring that in each backup stage the value of each point in the belief set is improved; the key observation is that a single backup may improve the value of many belief points. Contrary to other point-based methods, Perseus backs up only a (randomly selected) subset of points in the belief set, sufficient for improving the value of each belief point in the set. We show how the same idea can be extended to dealing with continuous action spaces. Experimental results show the potential of Perseus in large scale POMDP problems. [less ▲]

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See detailLe commerce électronique en droit luxembourgeois Commentaire de la loi (modifiée) du 14 août 2000 relative au commerce électronique
Durin, Maryline; Leroux, Olivier; Montero, Etienne et al

Book published by Larcier (2005)

Depuis qu'il s'est doté, à la fin de l'année 2000, d'une législation moderne encadrant le commerce électronique, le Grand-Duché de Luxembourg est devenu l'une des places de choix en Europe pour les ... [more ▼]

Depuis qu'il s'est doté, à la fin de l'année 2000, d'une législation moderne encadrant le commerce électronique, le Grand-Duché de Luxembourg est devenu l'une des places de choix en Europe pour les entreprises offrant des biens et services via l'internet. Le présent ouvrage a pour objet de présenter en détail le régime juridique du commerce électronique au Luxembourg en le situant par rapport aux normes d'origine communautaire et en le comparant avec les règles en vigueur dans d'autres pays européens, principalement en Belgique et en France. Il est le fruit d'un travail de recherche collectif mené au sein du Laboratoire de Droit Economique, rattaché depuis peu à l'Université du Luxembourg, avec l'appui scientifique du Centre de Recherche Informatique et Droit des FUNDP de Namur et le soutien du Fonds National de la Recherche du Luxembourg. L'ouvrage est destiné à toute personne qui s'intéresse au commerce électronique et à son environnement juridique, qu'il s'agisse de juristes spécialisés dans le droit des nouvelles technologies, d'entreprises ou d'ingénieurs informatiques. L'approche comparatiste et les analyses en droit communautaire intéresseront un public qui va bien au-delà de celui qui est concerné par le seul droit luxembourgeois. [less ▲]

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See detailTrust et fiducie. La Convention de La Haye et la nouvelle législation luxembourgeoise
Prüm, André UL; Witz, Claude; Aynès, Laurent

Book published by Montchrestien (2005)

Le présent ouvrage reproduit les actes du colloque de Luxembourg du 11 décembre 2003 consacré au trust et à la nouvelle fiducie luxembourgeoise. D'éminents spécialistes du trust et de la Convention de La ... [more ▼]

Le présent ouvrage reproduit les actes du colloque de Luxembourg du 11 décembre 2003 consacré au trust et à la nouvelle fiducie luxembourgeoise. D'éminents spécialistes du trust et de la Convention de La Haye du 1er juillet 1985 éclairent utilement cette institution clé des pays de Common Law et les solutions de droit international posées par la Convention. La confrontation du trust avec les pays de droit civil est approfondie à la lumière de l'expérience du Grand-Duché qui a ratifié la Convention de La Haye tout en procédant à une réforme substantielle de la fiducie luxembourgeoise. Les auteurs de l'avant-projet de loi présentent en détail la loi du 27 juillet 2003 relative au trust et aux contrats fiduciaires dont l'étude est complétée par l'examen du traitement fiscal. L'ouvrage s'adresse à tous ceux qui s'intéressent au trust et à la fiducie notamment en France, en Belgique et en Suisse où l'on songe à ratifier la Convention de La Haye et à consacrer législativement la fiducie. [less ▲]

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See detailDe nouvelles opportunités pour les fusions transeuropéennes de banques
Prüm, André UL

in Revue de Droit Bancaire et Financier (2005), (3), 3

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See detailDe nouvelles orientations pour la politique européenne en matière de services financiers
Prüm, André UL

in Revue de Droit Bancaire et Financier (2005), (5), 3

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See detailLa nouvelle fiducie luxembourgeoise
Prüm, André UL; Witz, Claude

in La nouvelle fiducie luxembourgeoise (2005)

Le présent ouvrage reproduit les actes du colloque de Luxembourg du 11 décembre 2003 consacré au trust et à la nouvelle fiducie luxembourgeoise. D'éminents spécialistes du trust et de la Convention de La ... [more ▼]

Le présent ouvrage reproduit les actes du colloque de Luxembourg du 11 décembre 2003 consacré au trust et à la nouvelle fiducie luxembourgeoise. D'éminents spécialistes du trust et de la Convention de La Haye du 1er juillet 1985 éclairent utilement cette institution clé des pays de Common Law et les solutions de droit international posées par la Convention. La confrontation du trust avec les pays de droit civil est approfondie à la lumière de l'expérience du Grand-Duché qui a ratifié la Convention de La Haye tout en procédant à une réforme substantielle de la fiducie luxembourgeoise. Les auteurs de l'avant-projet de loi présentent en détail la loi du 27 juillet 2003 relative au trust et aux contrats fiduciaires dont l'étude est complétée par l'examen du traitement fiscal. L'ouvrage s'adresse à tous ceux qui s'intéressent au trust et à la fiducie notamment en France, en Belgique et en Suisse où l'on songe à ratifier la Convention de La Haye et à consacrer législativement la fiducie. [less ▲]

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See detailDams and International Law
Happold, Matthew UL

in de Chazournes, L. Boisson; Salman, S.M.A. (Eds.) Les ressources en eau et le droit international/Water Resources and International Law (2005)

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See detailDevelopment of a European Combined Geodetic Network (ECGN)
Ihde, Johannes; Baker, Trevor; Bruyninx, Carine et al

in Journal of Geodynamics (2005), 40(4-5), 450-460

To ensure the long-time stability of the terrestrial reference system with an accuracy of 10‑9 in the global and continental scale, the interactions between different time-dependent influences of the ... [more ▼]

To ensure the long-time stability of the terrestrial reference system with an accuracy of 10‑9 in the global and continental scale, the interactions between different time-dependent influences of the system Earth to the terrestrial reference system and the related observation has to be considered in the evaluation models. It is proposed to establish a kinematic European Combined Geodetic Network (ECGN) and to integrate the spatial and height reference system into the Earth gravity field parameter estimation. This plan is in agreement with the foreseen IAG project of an Integrated Global Geodetic Observation System (IGGOS). In selected European stations ECGN will establish the combination of time series of spatial/geometric GNSS observations, precise levelling and tide gauge records with gravity field related observations (gravity, Earth tides). Observations are complemented with meteorological parameters, surrounding information of the stations, e.g. eccentricities and ground water level. A first call for participation in the project was directed to the implementation of the ECGN stations. These stations include the standard observation techniques GNSS (GPS/GLONASS—permanent), gravity (super conducting gravimeter and/or absolute gravimeter—permanent or repeated), levelling connections to nodal points of the European levelling network (UELN) (repeated) and meteorological parameters (permanent). A basic constituent of the ECGN stations is a local network for controlling the eccentricities at the 1 mm accuracy level in all three spatial components. For the contributing observation techniques, guidelines have been agreed upon to ensure equal observation principles [less ▲]

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See detailDAWL: A Delayed-ACK Scheme for MAC-Level Performance Enhancement of Wireless LANs
Kliazovich, Dzmitry UL; Granelli, Fabrizio

in Mobile Networks and Applications (2005), 10(5), 607-615

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See detailLa regulation américaine des agences de notation
Conac, Pierre-Henri UL

in Risques : les cahiers de l'assurance (2005), (61), 55-55

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See detailReview of Röbbecke, Martina, Dagmar Simon, Martin Lengwiler & Clemens Kraetsch: Inter-Disziplinieren: Erfolgsbedingungen von Forschungskooperationen
Powell, Justin J W UL

in Kölner Zeitschrift für Soziologie und Sozialpsychologie (2005), 57(4), 757-759

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See detailSelf-organizing mixture models
Verbeek, J. J.; Vlassis, Nikos UL; Krose, B. J. A.

in Neurocomputing (2005), 63

We present an expectation-maximization (EM) algorithm that yields topology preserving maps of data based on probabilistic mixture models. Our approach is applicable to any mixture model for which we have ... [more ▼]

We present an expectation-maximization (EM) algorithm that yields topology preserving maps of data based on probabilistic mixture models. Our approach is applicable to any mixture model for which we have a normal EM algorithm. Compared to other mixture model approaches to self-organizing maps (SOMs), the function our algorithm maximizes has a clear interpretation: it sums data log-likelihood and a penalty term that enforces self-organization. Our approach allows principled handling of missing data and learning of mixtures of SOMs. We present example applications illustrating our approach for continuous, discrete, and mixed discrete and continuous data. (C) 2004 Elsevier B.V. All rights reserved. [less ▲]

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See detailU-Lab: an out-of-the-box solution for any usability problem? A presentation on methodological and practical issues
Koenig, Vincent UL; van de Leemput, Cécile

Scientific Conference (2005)

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See detailFormer des professeures autonomes et responsables, est-ce possible?
Weber, Jean-Marie UL

in Transfert (2005), 2

Detailed reference viewed: 60 (1 UL)