Departament de Tecnologies de la Informació i les Comunicacions: Enviaments recents

  • Neu, Gergely; Szepesvári, Csaba (Springer, 2009)
    One major idea in structured prediction is to assume that the predictor computes its output by finding the maximum of a score function. The training of such a predictor can then be cast as the problem of finding weights ...
  • Kappen, Hilbert J.; Gómez, Vicenç; Opper, Manfred (Springer, 2012)
    We reformulate a class of non-linear stochastic optimal control problems introduced by Todorov (in Advances in Neural Information Processing Systems, vol. 19, pp. 1369-1376, 2007) as a Kullback-Leibler (KL) minimization ...
  • Bodirsky, Manuel; Dalmau, Víctor (Elsevier, 2013)
    On finite structures, there is a well-known connection between the expressive power of Datalog, finite variable logics, the existential pebble game, and bounded hypertree duality. We study this connection for infinite ...
  • Wang, Peng; Kong, Ru; Kong, Xiaolu; Liégeois, Raphaël; Orban, Csaba; Deco, Gustavo; Yeo, Thomas BT (American Association for the Advancement of Science (AAAS), 2019)
    We considered a large-scale dynamical circuit model of human cerebral cortex with region-specific microscale properties. The model was inverted using a stochastic optimization approach, yielding markedly better fit to new, ...
  • Dalmau, Víctor; Krokhin, Andrei; Larose, Benoit (Elsevier, 2008)
    The poset retraction problem for a poset P is whether a given poset Q containing P as a subposet admits a retraction onto P, that is, whether there is a homomorphism from Q onto P which fixes every element of P. We study ...
  • Dalmau, Víctor; Krokhin, Andrei (Elsevier, 2008)
    We study certain constraint satisfaction problems which are the problems of deciding whether there exists a homomorphism from a given relational structure to a fixed structure with a majority polymorphism. We show that ...
  • Bulatov, Andrei A.; Dalmau, Víctor (Elsevier, 2007)
    The Counting Constraint Satisfaction Problem (#CSP) can be expressed as follows: given a set of variables, a set of values that can be taken by the variables, and a set of constraints specifying some restrictions on the ...
  • Bulatov, Andrei; Chen, Hubie; Dalmau, Víctor (Elsevier, 2007)
    Intersection-closed classes of concepts arise naturally in many contexts and have been intensively studied in computational learning theory. In this paper, we study intersection-closed classes that contain the concepts ...
  • Bonet, Blai; Geffner, Héctor (Elsevier, 2001)
    In the AIPS98 Planning Contest, the hsp planner showed that heuristic search planners can be competitive with state-of-the-art Graphplan and sat planners. Heuristic search planners like hsp transform planning problems into ...
  • Bailey, Delbert D.; Dalmau, Víctor; Kolaitis, Phokion G. (Elsevier, 2007)
    The complexity class PP consists of all decision problems solvable by polynomial-time probabilistic Turing machines. It is well known that PP is a highly intractable complexity class and that PP-complete problems are in ...
  • Carvalho, Catarina; Dalmau, Víctor; Krokhin, Andrei (Elsevier, 2010)
    We study non-uniform constraint satisfaction problems definable in monadic Datalog stratified by the use of non-linearity. We show how such problems can be described in terms of homomorphism dualities involving trees of ...
  • Fuente Valentín, Luis de la; Pérez-Sanagustín, Mar; Hernández-Leo, Davinia; Pardo Sánchez, Abelardo; Blat, Josep; Delgado Kloos, Carlos (Elsevier, 2014)
    Computer Supported Collaborative Blended Learning (CSCBL) scripts are innovative practices that benefit from interactive devices to combine and coordinate activities occurring in different spatial locations. However, the ...
  • Herrera Boyer, Perfecto; Serra, Xavier; Peeters, Geoffroy (1999)
    Sound content description is one of the aims of the MPEG-7 initiative. Although MPEG-7 focuses on indexing and retrieval of audio, there are other sound content-based processing applications waiting to be developed once ...
  • Amarasinghe, Ishari; Hernández Leo, Davinia; Manathunga, Kalpani; Jonsson, Anders, 1973- (Graz University of Technology. Institut für Informationssysteme und Computer Medien (IICM), 2018)
    Collaborative learning spaces deployed in Massive Open Online Courses (MOOCs) provide productive social learning opportunities. However, sustaining collaboration in these spaces is challenging. This paper provides a ...
  • Albó, Laia; Hernández Leo, Davinia; Moreno Oliver, Verónica (Taylor & Francis, 2018)
    This paper explores how the use of smartphones vs. laptops influences students’ engagement, behaviour and experience watching academic videos in a collaborative classroom. Experiments were run in authentic teaching sessions ...
  • Sordo, Mohamed; Oramas, Sergio; Espinosa-Anke, Luis (Springer, 2015)
    This paper presents a method for the generation of struc- tured data sources for music recommendation using information extracted from unstructured text sources. The proposed method identi es entities in text that are ...
  • Toro Soto, Juan Manuel, 1976- (Konrad Lorenz Fundación Universitaria, 2011)
    Uno de los mayores problemas en el estudio del lenguaje es la comprensión de sus fundamentos biológicos. Una forma de abordar este problema que ha resultado efectiva es la de estudiar hasta qué punto compartimos con otros ...
  • Branzi, Francesca Martina, 1984-; Calabria, Marco; Boscarino, Maria Lucrezia; Costa, Albert (Elsevier, 2016)
    We explored the overlap between bilingual language control (bLC) and domain-general executive control (EC) by focusing on inhibitory control processes. We tested 62 bilinguals in linguistic and non-linguistic switching ...
  • Neumann, S.; Klebl, M.; Griffiths Jenkins, David; Hernández Leo, Davinia; de la Fuente Valentín, L.; Hummel, H.; Brouns, F.; Derntl, Michael; Oberhuemer, P. (International Association of Online Engineering, 2010)
    Europe has seen a number of learning design initiatives in the past years. Among them are the Open University UK Learning Design Initiative, JISC’s Design for Learning Programme, as well as the Open University of the ...
  • Ivorra Cano, Antoni, 1974-; Becerra-Fajardo, Laura; Tudela Pi, Marc; Ivorra Cano, Antoni, 1974- (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Galvanic coupling, or more precisely, volume conduction, can be used to communicate with and to transfer power to electronic implants. Since no bulky components for power, such as coils or batteries, are required within ...