Ara es mostren els items 15-34 de 97

    • An aggregation rule based on the binomial distribution 

      Freixas Bosch, Josep (Multidisciplinary Digital Publishing Institute (MDPI), 2022-11-23)
      Article
      Accés obert
      Many decision-making situations require the evaluation of several voters or agents. In a situation where voters evaluate candidates, the question arises of how best to aggregate evaluations so as to compare the candidates. ...
    • An aggregation rule under uncertainty 

      Freixas Bosch, Josep (2023)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Many decision-making situations require the evaluation of several agents or judges. In a situation where agents evaluate candidates, the question arises of how best to aggregate evaluations so as to compare the candidates. ...
    • An appropriate way to extend the Banzhaf index for multiple levels of approval 

      Freixas Bosch, Josep; Pons Vallès, Montserrat (Springer Nature, 2021-01-03)
      Article
      Accés obert
      The Banzhaf power index for games admits several extensions if the players have more than two ordered voting options. In this paper we prove that the most intu-itive and recognized extension ...
    • An axiomatic characterization of the potential decisiveness index 

      Freixas Bosch, Josep; Pons Navarro, Montserrat (2015-03-01)
      Article
      Accés obert
      Let us consider that somebody is extremely interested in increasing the probability of a proposal to be approved by a certain committee and that to achieve this goal he/she is prepared to pay off one member of the committee. ...
    • An axiomatization for two power indices for (3,2)-simple games 

      Bernardi, Giulia; Freixas Bosch, Josep (2019-01-01)
      Article
      Accés obert
      The aim of this work is to give a characterization of the Shapley–Shubik and the Banzhaf power indices for (3,2)-simple games. We generalize to the set of (3,2)-simple games the classical axioms for power indices on simple ...
    • An equivalent formulation for the Shapley value 

      Freixas Bosch, Josep (Springer, 2018-12-30)
      Capítol de llibre
      Accés obert
      An equivalent explicit formula for the Shapley value is provided, its equivalence with the classical one is proven by double induction. The importance of this new formula, in contrast to the classical one, is its capability ...
    • An extension and an alternative characterization of May’s theorem 

      Freixas Bosch, Josep; Pons Vallès, Montserrat (Springer, 2021-03-14)
      Article
      Accés obert
      The context of this work is a voting scenario in which each voter expresses his/her level of affinity about a proposal, by choosing a value in the set J={-j,…,-1,0,1,…,j}, and these individual votes produce a collective ...
    • Anonymous yes-no voting with abstention and multiple levels of approval 

      Freixas Bosch, Josep; Zwicker, William S. (Academic Press, 2009-11)
      Article
      Accés obert
      Els jocs simples simètrics (3, 2) serveixen de models per a sistemes de votació anònims en els quals cada votant pot votar "sí", abstenir-se, o votar "no", el resultat és "sí" o "no", i els votants juguen papers intercanviables. ...
    • Bounds for the Nakamura number 

      Freixas Bosch, Josep; Kurz, Sascha (Springer, 2019-04)
      Article
      Accés obert
      The Nakamura number is an appropriate invariant of a simple game to study the existence of social equilibria and the possibility of cycles. For symmetric (quota) games its number can be obtained by an easy formula. For ...
    • Complete voting systems with two types of voters: weightedness and counting 

      Freixas Bosch, Josep; Molinero Albareda, Xavier; Roura Ferret, Salvador (2012)
      Article
      Accés restringit per decisió de l'autor
      We investigate voting systems with two classes of voters, for which there is a hierarchy giving each member of the stronger class more influence or important than each member of the weaker class. We deduce for voting systems ...
    • Components with higher and lower risk in a reliability system 

      Freixas Bosch, Josep; Pons Vallès, Montserrat (Fundación Mapfre, 2015)
      Text en actes de congrés
      Accés obert
      A new reliability importance measure for components in a system, that we call Representativeness measure, is introduced. It evaluates to which extent the performance of a component is representative of the erformance of ...
    • Computation of several power indices by generating functions 

      Alonso Meijide, José María; Freixas Bosch, Josep; Molinero Albareda, Xavier (2012)
      Article
      Accés obert
      In this paper we propose methods to compute the Deegan-Packel, the Public Good, and the Shift power indices by generating functions for the particular case of weighted voting games. Furthermore, we define a new power ...
    • Consecutive expansions of k-out-of-n structures 

      Freixas Bosch, Josep; Puente del Campo, María Albina (2009)
      Report de recerca
      Accés restringit per decisió de l'autor
      Estudi dels sistemes obtinguts per expansions succesives
    • Consecutive expansions of k-out-of-n systems 

      Freixas Bosch, Josep; Puente del Campo, María Albina (2009-11)
      Article
      Accés obert
      S'introdueixen expansions de sistemes k-out-of-n. Es proposen algunes fórmules per fer més fàcil de comptabilitzar aquestes mesures i estudiar-ne les jerarquies.
    • Decisiveness indices are semiindices 

      Freixas Bosch, Josep; Pons Vallès, Montserrat (2016-06)
      Article
      Accés obert
      In this note we prove that any decisiveness index, defined for any voter as the probability of him/her being decisive, is a semiindex when the probability distribution over coalitions is anonymous, and it is a semiindex ...
    • Decisiveness indices are semiindices: addendum 

      Freixas Bosch, Josep; Pons Vallès, Montserrat (2017-01-01)
      Article
      Accés obert
      In the paper Decisiveness indices are semiindices (Freixas and Pons, 2016) it was shown that any decisiveness index obtained from an anonymous probability distribution is a semiindex, and that the converse is not true. In ...
    • Decisiveness of decisive symmetric games 

      Carreras Escobar, Francisco; Freixas Bosch, Josep; Puente del Campo, María Albina (2011-04-08)
      Report de recerca
      Accés obert
      Binary voting systems, usually represented by simple games, constitute a main DSS topic. A crucial feature of such a system is the easiness with which a proposal can be collectively accepted, which is measured by the ...
    • Dimension, egalitarianism and decisiveness of European voting systems 

      Carreras Escobar, Francisco; Freixas Bosch, Josep; Magaña Nieto, Antonio (2016)
      Article
      Accés obert
      An analysis of three major aspects has been carried out that may apply to any of the successive voting systems used for the European Union Council of Ministers, from the first one established in the Treaty of Rome in 1958 ...
    • Effect of a science communication event on students’ attitudes towards science and technology 

      Torras Melenchón, Núria; Grau Vilalta, Maria Dolors; Font Soldevila, Josep; Freixas Bosch, Josep (Tempus Publications, 2017)
      Article
      Accés obert
    • Egalitarian property for power indices 

      Freixas Bosch, Josep; Marciniak, Dorota (Springer, 2013)
      Article
      Accés obert
      In this study, we introduce and examine the Egalitarian property for some power indices on the class of simple games. This property means that after intersecting a game with a symmetric or anonymous game the difference ...