Exploració per autor "Freixas Bosch, Josep"
Ara es mostren els items 5-24 de 97
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A new power index based on minimal winning coalitions
Freixas Bosch, Josep; Alonso Meijide, José María (2009)
Report de recerca
Accés restringit per decisió de l'autorNou índex de poder basat en coalicions shift-minimals -
A new power index based on minimal winning coalitions without any surplus
Alonso Meijide, José María; Freixas Bosch, Josep (2010-04)
Article
Accés restringit per decisió de l'autorIn this paper we propose a new power index useful for the evaluation of each member in a committee, or democratic institution, and the degree of influence over the voting decision making system. The proposed solution is ... -
A note about decisive symmetric games
Puente del Campo, María Albina; Freixas Bosch, Josep; Carreras Escobar, Francisco (2009-04)
Comunicació de congrés
Accés restringit per decisió de l'autorS'estudien diverses funcions relacionades amb la presa de decisions en jocs simples. L'anàlisi es restringeix a jocs de decisió simètrics i la seva composició i es dóna per suposat que tots els jugadors comparteixen els ... -
A note on decisive symmetric games
Carreras Escobar, Francisco; Freixas Bosch, Josep; Puente del Campo, María Albina (2011)
Article
Accés restringit per política de l'editorialBinary 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 ... -
A parameterization for a class of complete games with abstention
Freixas Bosch, Josep; Tchantcho, Bertrand; Tsague, Bill Procès (2019-02-28)
Article
Accés obertVoting games with abstention are voting systems in which players can cast not only yes and no vote, but are allowed to abstain. This paper centers on the structure of a class of complete games with abstention. We obtain, ... -
A probabilistic unified approach for power indices in simple games
Freixas Bosch, Josep; Pons Vallès, Montserrat (Springer, 2019-11-01)
Capítol de llibre
Accés obertMany power indices on simple games have been defined trying to measure, under different points of view, the “a priori” importance of a voter in a collective binary voting scenario. A unified probabilistic way to define ... -
A value for j-cooperative games: some theoretical aspects and applications
Freixas Bosch, Josep (CRC Press, 2019-12-06)
Capítol de llibre
Accés obertA value that has all the ingredients to be a generalization of the Shapley value is proposed for a large class of games called j-cooperative games which are closely related to multi-choice games. When it is restricted to ... -
Achievable hierarchies in voting games with abstention
Freixas Bosch, Josep; Tchantcho, Bertrand; Tedjeugang, Narcisse (Elsevier, 2014-07-01)
Article
Accés obertIt is well known that he influence relation orders the voters the same way as the classical Banzhaf and Shapley-Shubik indices do when they are extended to the voting games with abstention (VGA) in the class of complete ... -
All power structures are achievable in basic weighted games
Freixas Bosch, Josep; Pons Vallès, Montserrat (Springer, 2023-04-09)
Capítol de llibre
Accés restringit per política de l'editorialA major problem in decision making is designing voting systems that are as simple as possible and able to reflect a given hierarchy of power of its members. It is known that in the class of weighted games all hierarchies ... -
Amplitude of weighted majority game strict representations
Freixas Bosch, Josep; Puente del Campo, María Albina (Institut d'Estadística de Catalunya, 1999)
Article
Accés obertSome real situations which may be described as weighted majority games can be modified when some players increase or decrease their weights and/or the quota is modified. Nevertheless, some of these modifications do not ... -
An aggregation rule based on the binomial distribution
Freixas Bosch, Josep (Multidisciplinary Digital Publishing Institute (MDPI), 2022-11-23)
Article
Accés obertMany 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'editorialMany 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 obertThe 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 obertLet 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 obertThe 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 obertAn 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 obertThe 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 obertEls 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 obertThe 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'autorWe 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 ...