Enviaments recents

  • Automated construction and analysis of political networks via open government and media sources 

    García-Olano, Diego; Arias Vicente, Marta; Larriba Pey, Josep (2016)
    Text en actes de congrés
    Accés obert
    We present a tool to generate real world political networks from user provided lists of politicians and news sites. Additional output includes visualizations, interactive tools and maps that allow a user to better understand ...
  • Characterization of order-like dependencies with formal concept analysis 

    Codocedo, Victor; Baixeries i Juvillà, Jaume; Kaytoue, Mehdi; Napoli, Amedeo (2011)
    Text en actes de congrés
    Accés obert
    Functional Dependencies (FDs) play a key role in many fields of the relational database model, one of the most widely used database systems. FDs have also been applied in data analysis, data quality, knowl- edge discovery ...
  • Does training affect match performance? A study using data mining and tracking devices 

    Fernández, Javier; Medina Leal, Daniel; Gómez, Antonio; Arias Vicente, Marta; Gavaldà Mestre, Ricard (2016)
    Comunicació de congrés
    Accés obert
    FIFA has recently allowed the use of electronic performance and tracking systems (EPTS) in professional football competition, providing teams with novel and more accurate data. Physical performance has not yet taken much ...
  • Aprenentatge mòbil i ludificació a una gimcana tecnològica 

    López Núñez, Mercè; Muñoz, Ingrid; Hernández Fernández, Antonio (Institut d'Estudis Catalans (IEC), 2016)
    Comunicació de congrés
    Accés obert
    Es presenta una activitat que resulta de la confluència de les noves tecnologies a través de la utilització del mòbil, amb una metodologia en alça en el món de l’educació: la ludificació, o gamificació, es a dir, aprendre ...
  • Multivariate dynamic kernels for financial time series forecasting 

    Peña, Mauricio; Arratia Quesada, Argimiro Alejandro; Belanche Muñoz, Luis Antonio (Springer, 2016)
    Text en actes de congrés
    Accés obert
    We propose a forecasting procedure based on multivariate dynamic kernels, with the capability of integrating information measured at different frequencies and at irregular time intervals in financial markets. A data ...
  • On the computation of confluent hypergeometric functions for large imaginary part of parameters b and z 

    Navas Palencia, G.; Arratia Quesada, Argimiro Alejandro (Springer, 2016)
    Text en actes de congrés
    Accés obert
    We present an efficient algorithm for the confluent hypergeometric functions when the imaginary part of b and z is large. The algorithm is based on the steepest descent method, applied to a suitable representation of the ...
  • Towards a sharp estimation of transfer entropy for identifying causality in financial time series 

    Serès, Alex; Cabaña, Ana Alejandra; Arratia Quesada, Argimiro Alejandro (CEUR-WS.org, 2016)
    Text en actes de congrés
    Accés obert
    We present an improvement of an estimator of causality in financial time series via transfer entropy, which includes the side information that may affect the cause-effect relation in the system, i.e. a conditional infor ...
  • Testing the robustness of laws of polysemy and brevity versus frequency 

    Hernández Fernández, Antonio; Casas Fernández, Bernardino; Ferrer Cancho, Ramon; Baixeries i Juvillà, Jaume (Springer, 2016)
    Text en actes de congrés
    Accés obert
    The pioneering research of G.K. Zipf on the relationship between word frequency and other word features led to the formulation of various linguistic laws. Here we focus on a couple of them: the meaning-frequency law, i.e. ...
  • From training to match performance: A predictive and explanatory study on novel tracking data 

    Fernández, Javier; Medina, Daniel; Gómez, Antonio; Arias Vicente, Marta; Gavaldà Mestre, Ricard (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    The recent FIFA approval of the use of Electronic Performance and Tracking Systems (EPTS) during competition, has provided the availability of novel data regarding physical player performance. The analysis of this kind of ...
  • Fraud detection in energy consumption: a supervised approach 

    Coma Puig, Bernat; Carmona Vargas, Josep; Gavaldà Mestre, Ricard; Alcoverro, Santiago; Martín, Victor (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Comunicació de congrés
    Accés obert
    Data from utility meters (gas, electricity, water) is a rich source of information for distribution companies, beyond billing. In this paper we present a supervised technique, which primarily but not only feeds on meter ...

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