Enviaments recents

  • Dimension and codimension of simple games 

    Kurz, Sascha; Molinero Albareda, Xavier; Olsen, Martin; Serna Iglesias, María José (2016-11-01)
    Article
    Accés restringit per política de l'editorial
    This paper studies the complexity of computing a representation of a simple game as the intersection (union) of weighted majority games, as well as, the dimension or the codimension. We also present some examples with ...
  • On the influence of creativity in basic programming learning at a first-year Engineering course 

    Pérez Poch, Antoni; Olmedo Torre, Noelia; Sánchez Carracedo, Fermín; Salán Ballesteros, Maria Núria; López Álvarez, David (Tempus Publications, 2016-10)
    Article
    Accés obert
    Teaching fundamentals of programming is a complex task that involves the students’ acquisition of diverse knowledge and skills. It is also well known that programming often requires a certain degree of creativity. There ...
  • The meaning-frequency law in Zipfian optimization models of communication 

    Ferrer Cancho, Ramon (2016-10-10)
    Article
    Accés obert
    According to Zipf’s meaning-frequency law, words that are more frequent tend to have more meanings. Here it is shown that a linear dependency between the frequency of a form and its number of meanings is found in a family ...
  • The complexity of measuring power in generalized opinion leader decision models 

    Molinero Albareda, Xavier; Serna Iglesias, María José (2016-10)
    Article
    Accés restringit per política de l'editorial
    We analyze the computational complexity of the power measure in models of collective decision: the generalized opinion leader-follower model and the oblivious and non-oblivious infuence models. We show that computing the ...
  • Self-tracking reloaded: Applying process mining to personalized health care from labeled sensor data 

    Sztyler, Timo; Carmona Vargas, Josep; Völker, Johanna; Stuckenschmidt, Heiner (2016)
    Article
    Accés restringit per política de l'editorial
    Currently, there is a trend to promote personalized health care in order to prevent diseases or to have a healthier life. Using current devices such as smart-phones and smart-watches, an individual can easily record detailed ...
  • Mining conditional partial order graphs from event logs 

    Mokhov, Andrey; Carmona Vargas, Josep; Beaumont, Jonathan (2016)
    Article
    Accés restringit per política de l'editorial
    Process mining techniques rely on event logs: the extraction of a process model (discovery) takes an event log as the input, the adequacy of a process model (conformance) is checked against an event log, and the enhancement ...
  • A fast and retargetable framework for logic-IP-internal electromigration assessment comprehending advanced waveform effects 

    Jain, Palkesh; Cortadella Fortuny, Jordi; Sapatnekar, Sachin S. (2016-06-01)
    Article
    Accés obert
    A new methodology for system-on-chip-level logic-IP-internal electromigration verification is presented in this paper, which significantly improves accuracy by comprehending the impact of the parasitic RC loading and ...
  • Discovery of spatio-temporal patterns from location-based social networks 

    Béjar Alonso, Javier; Álvarez Napagao, Sergio; Garcia Gasulla, Dario; Gómez Sebastià, Ignasi; Oliva Felipe, Luis Javier; Tejeda Gómez, José Arturo; Vázquez Salceda, Javier (2015-07-20)
    Article
    Accés obert
    Location Based Social Networks (LBSN) like Twitter or Instagram are a good source for user spatio-temporal behavior. These networks collect data from users in such a way that they can be seen as a set of collective and ...
  • On graph combinatorics to improve eigenvector-based measures of centrality in directed networks 

    Arratia Quesada, Argimiro Alejandro; Marijuan López, Carlos (Elsevier, 2016-09-01)
    Article
    Accés restringit per política de l'editorial
    We present a combinatorial study on the rearrangement of links in the structure of directed networks for the purpose of improving the valuation of a vertex or group of vertices as established by an eigenvector-based ...
  • Cost-effective secure e-health cloud system using identity based cryptographic techniques 

    Wang, Xu An; Ma, Jianfeng; Xhafa Xhafa, Fatos; Zhang, Mingwu; Luo, Xiaoshuang (Elsevier, 2016-08-31)
    Article
    Accés restringit per política de l'editorial
    Nowadays E-health cloud systems are more and more widely employed. However the security of these systems needs more consideration for the sensitive health information of patients. Some protocols on how to secure the e-health ...

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