Browsing by Author "Gómez, Vicenç"

Sort by: Order: Results:

  • Gómez, Vicenç; Kappen, Hilbert J.; Litvak, Nelly; Kaltenbrunner, Andreas (Springer, 2013)
    Online discussion threads are conversational cascades in the form of posted messages that can be generally found in social systems that comprise many-to-many interaction such as blogs, news aggregators or bulletin board ...
  • Thalmeier, Dominik; Gómez, Vicenç; Kappen, Hilbert J. (IOS Press, 2016)
    The dynamical processes taking place on a network depend on its topology. Influencing the growth process of a network therefore has important implications on such dynamical processes. We formulate the problem of influencing ...
  • Gómez, Vicenç (Universitat Pompeu Fabra, 2008-06-23)
    Aquesta tesi tracta d'algoritmes i fenòmens complexos en xarxes.<br/><br/>En la primera part s'estudia un model de neurones estocàstiques inter-comunicades mitjançant potencials d'acció. Proposem una tècnica de modelització ...
  • Santamaría, Guillermo; Gómez, Vicenç (2015)
    In contrast to traditional social networks, signed ones encode both relations of affinity and disagreement. Community discovery in this kind of networks has been successfully addressed using the Potts model, originated ...
  • Aragón, Pablo; Kaltenbrunner, Andreas; Calleja-López, Antonio; Pereira, Andrés; Monterde Mateo, Arnau; Barandiaran, Xabier E.; Gómez, Vicenç (Springer Congressos, 2017)
    With the irruption of ICTs and the crisis of political representation, many online platforms have been developed with the aim of improving participatory democratic processes. However, regarding platforms for online ...
  • Aragón, Pablo; Gómez, Vicenç; Kaltenbrunner, Andreas (Wiley, 2017)
    Online discussions are the essence of many social platforms on the Internet. These platforms are receiving increasing interest because of their potential to become deliberative spaces. Many studies have proposed approaches ...
  • Aragón, Pablo; Gómez, Vicenç; García, David; Kaltenbrunner, Andreas (SpringerOpen, 2017)
    Online discussion in form of written comments is a core component of many social media platforms. It has attracted increasing attention from academia, mainly because theories from social sciences can be explored at an ...
  • Aragón, Pablo; Bermejo, Yago; Gómez, Vicenç; Kaltenbrunner, Andreas (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Decide Madrid is the civic technology of Madrid City Council which allows users to create and support online petitions. Despite the initial success, the platform is encountering problems with the growth of petition signing ...
  • Gallego Gamo, Helena; Laniado, David; Kaltenbrunner, Andreas; Gómez, Vicenç; Aragón, Pablo (Springer Congressos, 2017)
    In the 2010 decade, Spanish politics have transitioned from bipartidism to multipartidism. This change led to an unstable situation which eventually led to the rare scenario of two general elections within six months. The ...
  • Molkaraie, Mehdi; Gómez, Vicenç (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Normal factor graph duality offers new possibilities for Monte Carlo algorithms in graphical models. Specifically, we consider the problem of estimating the partition function of the ferromagnetic Ising and Potts models ...
  • Aragón, Pablo; Sáez-Trumper, Diego; Redi, Miriam; Hale, Scott A.; Gómez, Vicenç; Kaltenbrunner, Andreas (Association for the Advancement of Artificial Intelligence (AAAI), 2018)
    The Internet has become a fundamental resource for activism as it facilitates political mobilization at a global scale. Petition platforms are a clear example of how thousands of people around the world can contribute ...
  • 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 ...
  • Gómez, Vicenç; Kappen, Hilbert J.; Peters, Jan-Michael; Neumann, Gerhard (Springer, 2014)
    Path integral (PI) control defines a general class of control problems for which the optimal control computation is equivalent to an inference problem that can be solved by evaluation of a path integral over state trajectories. ...
  • Gómez, Vicenç; Kaltenbrunner, Andreas; López, Vicente, 1954- (ACM Association for Computer Machinery, 2008)
    We analyze the social network emerging from the user comment activity on the website Slashdot. The network presents/ncommon features of traditional social networks such as a giant component, small average path length and ...
  • Germano, Fabrizio; Gómez, Vicenç; Le Mens, Gaël (ACM Association for Computer Machinery, 2019)
    Ranking algorithms play a crucial role in online platforms ranging from search engines to recommender systems. In this paper, we identify a surprising consequence of popularity-based rankings: the fewer the items reporting ...
  • Gómez, Vicenç; Kaltenbrunner, Andreas; Laniado, David (2016-05-10)
    This repository contains datasets with online conversation threads collected and analyzed by different researchers. Currently, you can find datsets from different news aggregators (Slashdot, Barrapunto) and the English ...
  • Kappen, Hilbert J.; Gómez, Vicenç (Springer, 2014)
    We analyze the variational method for sparse regression using ℓ 0 regularization. The variational approximation results in a model that is similar to Breiman’s Garrote model. We refer to this method as the Variational ...
  • Aragón, Pablo; Gómez, Vicenç; Kaltenbrunner, Andreas (Association for the Advancement of Artificial Intelligence (AAAI), 2017)
    Online discussion is essential for the communication and collaboration of online communities. The reciprocal exchange of messages between users that characterizes online discussion can be represented in many different ...
  • Aragón, Pablo; Gómez, Vicenç; Kaltenbrunner, Andreas (Association for the Advancement of Artificial Intelligence (AAAI), 2016)
    Online debate tools for participatory democracy and crowdsourcing legislation are limited by different factors. One of them arises when discussion of proposals reaches a large number of contributions and therefore ...