Ara es mostren els items 1-20 de 20

  • Ability to separate situations with a priori coalition structures by means of symmetric solutions 

    Giménez Pradales, José Miguel (2017)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    We say that two situations described by cooperative games are inseparable by a family of solutions, when they obtain the same allocation by all solution concept of this family. The situation of separability by a family of ...
  • Accessibility measures to nodes of directed graphs using solutions for generalized cooperative games 

    Amer Ramon, Rafael; Giménez Pradales, José Miguel; Magaña Nieto, Antonio (2012-02)
    Article
    Accés restringit per política de l'editorial
    The aim of this paper consists of constructing accessibility measures to the nodes of directed graphs using methods of Game Theory. Since digraphs without a predefined game are considered, the main part of the paper is ...
  • A concept of weighted connectivity on connected graphs 

    Amer Ramon, Rafael; Giménez Pradales, José Miguel (2009-02)
    Article
    Accés obert
    The introduction of a {0,1}-valued game associated to a connected graph allows us to assign to each node a value of weighted connectivity to the different solutions that for the cooperative games are obtained by means of ...
  • A method to calculate generalized mixed modified semivalues: application to the Catalan Parliament (legislature 2012-2016) 

    Giménez Pradales, José Miguel; Puente del Campo, María Albina (Springer, 2015-10-01)
    Article
    Accés obert
    We focus on generalized mixed modified semivalues, a family of coalitional values. They apply to games with a coalition structure by combining a (induced) semivalue in the quotient game, but share within each union the ...
  • A new procedure to calculate the Owen value 

    Puente del Campo, María Albina; Giménez Pradales, José Miguel (2017)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    In this paper we focus on games with a coalition structure. Particularly, we deal with the Owen value, the coalitional value of the Shapley value, and we provide a computational procedure to calculate this coalitional value ...
  • Aportaciones al estudio de soluciones para juegos cooperativos 

    Giménez Pradales, José Miguel (Universitat Politècnica de Catalunya, 2001-12-14)
    Tesi
    Accés obert
    El objetivo del trabajo consiste en la generalización y el estudio de modelos y métodos que han mostrado su eficiencia respecto a las soluciones para los juegos cooperativos propuestas por Shapley o por Banzhaf, así como ...
  • A probabilistic concept of accessibility for access structures 

    Amer Ramon, Rafael; Giménez Pradales, José Miguel; Magaña Nieto, Antonio (2008-06-13)
    Report de recerca
    Accés obert
    In this paper we introduce the concept of weighted accessibility for access structures. In some sense, it represents a measure of how difficult or how easy is to recover the secret. We give also a numerical measure of ...
  • Bisemivalues, binomial bisemivalues and multilinear extension for bicooperative games 

    Domènech Blázquez, Margarita; Giménez Pradales, José Miguel; Puente del Campo, María Albina (2015-10-05)
    Report de recerca
    Accés obert
    We introduce bisemivalues for bicooperative games and we also provide an interesting characterization of this kind of values by means of weighting coefficients in a similar way than given for semivalues in the context of ...
  • Bisemivalues for bicooperative games 

    Domènech Blázquez, Margarita; Giménez Pradales, José Miguel; Puente del Campo, María Albina (2018-02-04)
    Article
    Accés obert
    We introduce bisemivalues for bicooperative games and we also provide an interesting characterization of this kind of values by means of weighting coefficients in a similar way as it was given for semivalues in the context ...
  • Computational procedure for a wide family of mixed coalitional values 

    Giménez Pradales, José Miguel; Puente del Campo, María Albina (2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    We consider a family of mixed coalitional values. They apply to games with a coalition structure by combining a (induced) semivalue in the quotient game, but share within each union the payoff so obtained by applying ...
  • Cooperative games with a priori unions: introduction of a wide set of solutions 

    Giménez Pradales, José Miguel (2006-12-04)
    Report de recerca
    Accés obert
    The semivalues are solution concepts for cooperative games that assign to each player a weighted sum of his/her marginal contributions to the coalitions, where the weights only depend on the coalition size. The Shapley ...
  • Eines de la web 2.0 per a la coordinació d'assignatures i el treball en equip 

    Bonet Dalmau, Jordi; Águila López, Francisco del; Escobet Canal, Teresa; Giménez Pradales, José Miguel; Giralt Mas, Ma. Rosa; Palà Schönwälder, Pere; Sanahuja Moliner, Ricard; Vila Marta, Sebastià (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2013-02-08)
    Text en actes de congrés / Comunicació de congrés
    Accés obert
    Aquest projecte té per objectiu millorar l'eficiència en l'aprenentatge introduint la web 2.0 com a eina quotidiana de coordinació del PDI i de treball en equip de l'alumnat. La part més important del projecte consisteix ...
  • Nodes of directed graphs ranked by solutions defined on cooperative games 

    Amer Ramon, Rafael; Giménez Pradales, José Miguel; Magaña Nieto, Antonio (2010)
    Comunicació de congrés
    Accés obert
    Hierarchical structures, transportation systems, communication networks and even sports competitions can be modeled by means of directed graphs. Since digraphs without a predefined game are considered, the main part of ...
  • Partnership formation and multinomial values 

    Giménez Pradales, José Miguel; Llongueras Arola, Maria Dolors; Puente del Campo, María Albina (2014-06-19)
    Article
    Accés obert
    We use multinomial values to study the effects of the partnership formation in cooperative games, comparing the joint effect on the involved players with the alternative alliance formation. The simple game case is especially ...
  • Power and potential maps induced by any semivalue: some algebraic properties and computation by multilinear extensions 

    Carreras Escobar, Francisco; Giménez Pradales, José Miguel (Elsevier, 2011-05-16)
    Article
    Accés restringit per política de l'editorial
    The notions of total power and potential, both defined for any semivalue, give rise to two endomorphisms of the vector space of cooperative games on any given player set where the semivalue is defined. Several properties ...
  • Reconstructing a simple game from a uniparametric family of allocations 

    Amer Ramon, Rafael; Giménez Pradales, José Miguel; Magaña Nieto, Antonio (Springer, 2013-10-01)
    Article
    Accés restringit per política de l'editorial
    Several relationships between simple games and a particular type of solu- tions for cooperative games are studied in this paper. These solutions belong to the set of semivalues and they are related to a unique parameter ...
  • Semivalues: power, potential and multilinear extensions 

    Carreras Escobar, Francisco; Giménez Pradales, José Miguel (2009-04)
    Report de recerca
    Accés obert
    The notions of power and potential, both defined for any semivalue, give rise to two endomorphisms of the vector space of all cooperative games on a given player set. Several properties of these linear mappings are stated ...
  • Semivalues: weighting coefficients and allocations on unanimity games 

    Domènech Blázquez, Margarita; Giménez Pradales, José Miguel; Puente del Campo, María Albina (2017-12-12)
    Article
    Accés obert
    Each semivalue, as a solution concept defined on cooperative games with a finite set of players, is univocally determined by weighting coefficients that apply to players’ marginal contributions. Taking into account that a ...
  • Separability by semivalues modified for games with coalition structure 

    Amer Ramon, Rafael; Giménez Pradales, José Miguel (2009-06)
    Article
    Accés obert
    Two games are inseparable by semivalues if both games obtain the same allocation whatever semivalue is considered. The problem of separability by semivalues reduces to separability from the null game. For four or more ...
  • Some properties for probabilistic and multinomial (probabilistic) values on cooperative games 

    Domènech Blázquez, Margarita; Giménez Pradales, José Miguel; Puente del Campo, María Albina (2016-01-01)
    Article
    Accés obert
    We investigate the conditions for the coefficients of probabilistic and multinomial values of cooperative games necessary and/or sufficient in order to satisfy some properties, including marginal contributions, balanced ...