Now showing items 1-20 of 107

  • A Decomposition Theorem for T-Indistinguishability Operators : the Continuous Strict Archimedean Case 

    Boixader Ibáñez, Dionís; Recasens Ferrés, Jorge (2012)
    Conference report
    Open Access
  • A fuzzy-based cluster-head selection system for WSNs: a comparison study for static and mobile sensors 

    Barolli, Leonard; Wang, Qi; Kulla, E.; Xhafa Xhafa, Fatos; Kamo, B.; Takizawa, Makoto (IEEE Press. Institute of Electrical and Electronics Engineers, 2012)
    Conference report
    Restricted access - publisher's policy
  • A fuzzy-based data replication system for QoS improvement in MANETs 

    Barolli, Leonard; Spaho, Evjola; Ikeda, Makoto; Kulla, E.; Xhafa Xhafa, Fatos; Youna, Muhammad (ACM Press, NY, 2012)
    Conference report
    Restricted access - publisher's policy
  • A fuzzy-evolutionary seller agent for an automatic negotiation framework on e-commerce 

    Manjacavas Ortíz, Ramón; Castro Sánchez, José Jesús; Moreno García, Juan (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2006)
    Article
    Open Access
    The business achievement via e-commerce is getting more important at the present time. E-commerce implies several activities. One of the most significant activity is the consummation of negotiations between sellers and ...
  • A map characterizing the fuzzy points and columns of a T-indistinguishability operator 

    Boixader Ibáñez, Dionís; Recasens Ferrés, Jorge (2005-10)
    Article
    Open Access
    A new map (ΛE) between fuzzy subsets of a universe X endowed with a T-indistinguishability operator E is introduced. The main feature of ΛE is that it has the columns of E as fixed points, and thus it provides us with a ...
  • A model for CAGD using fuzzy logic 

    Jacas Moral, Juan; Monreal Pujadas, Amadeo; Recasens Ferrés, Jorge (1997-01)
    Article
    Restricted access - publisher's policy
    This paper presents a first approach to a system based on fuzzy logic for the design of curves and surfaces in the context of computer aided geometric design. Bézier curves and surfaces can be seen as particular cases of ...
  • A new assessment method of new energy in regional sustainable development based on hesitant fuzzy information 

    Yao, Hongdi; Li, Wenxing (OmniaScience, 2014-12)
    Article
    Open Access
    Purpose: The new energy has been an important driving force in region sustainable development. It is a critical issue to evaluate the role of new energy in region sustainable development. Design/methodology/approach: ...
  • A qualitative reasoning approach for measuring citizens’ satisfaction 

    Domingo Gou, Marta; Agell Jané, Núria; Aguado Chao, Juan Carlos; Català Mallofré, Andreu (2004-10)
    Article
    Open Access
  • A reformulation of entropy in the presence of indistinguishability operators 

    Recasens Ferrés, Jorge; Hernández, E (2002-06)
    Article
    Restricted access - publisher's policy
    This paper deals with the measurement of entropy when an indistinguishability relation on the set of events has been defined. Our approach states that entropy could be measured in terms of the observed distinguishability ...
  • A train dispatching model based on fuzzy passenger demand forecasting during holidays 

    Dou, Fei; Xu, Jie; Wang, Li; Jia, Limin (School of Industrial and Aeronautic Engineering of Terrassa (ETSEIAT). Universitat Politècnica de Catalunya (UPC), 2013-04)
    Article
    Open Access
    Purpose: The train dispatching is a crucial issue in the train operation adjustment when passenger flow outbursts. During holidays, the train dispatching is to meet passenger demand to the greatest extent, and ensure safety, ...
  • Aggregation of T-transitive Relations 

    Jacas Moral, Juan; Recasens Ferrés, Jorge (Wiley InterScience, 2003-12)
    Article
    Restricted access - publisher's policy
    This article studies the aggregation of transitive fuzzy relations. We first find operators that preserve transitivity and then extend the results to aggregating operators. As special cases, means and some kind of suitable ...
  • Aggregation operators and ruled surfaces 

    Recasens Ferrés, Jorge (IOS Press, 2008)
    Conference report
    Open Access
  • Aggregation operators and the Lipschitzian condition 

    Jacas Moral, Juan; Recasens Ferrés, Jorge (IEEE Comp. Int. Soc., 2007)
    Conference report
    Open Access
    Lipschitzian and kernel aggregation operators with respect to the natural T-indistinguishability operator ET and their powers are studied. A t-norm T is proved to be ETLipschitzian, and is interpreted as a fuzzy point and ...
  • Aggregation Operators Based on Indistinguishability Operators 

    Jacas Moral, Juan; Recasens Ferrés, Jorge (Wiley InterScience, 2006-08)
    Article
    Restricted access - publisher's policy
    This article gives a new approach to aggregating assuming that there is an indistinguishability operator or similarity defined on the universe of discourse. The very simple idea is that when we want to aggregate two values ...
  • Algorithme de décision avec la logique floue 

    Davins Valldaura, Joan (Universitat Politècnica de CatalunyaENSTA ParisTech, École Nationale Supérieure de Techniques Avancées, 2011)
    Master thesis (pre-Bologna period)
    Open Access
    La mission du stage porte sur l'étude, création et mise au point d'un algorithme de décision avec la logique floue sur SSPP indirect. Le stage mettra en exergue les avantages et inconvénients des différents méthodes de ...
  • Application of fuzzy techniques to biomedical images 

    Mattioli Aramburu, Gabriel (Universitat Politècnica de Catalunya, 2012-06-21)
    Master thesis
    Open Access
  • Applying fuzzy logic in video surveillance systems 

    Molina, José Manuel; García, Jesús; Pérez, Oscar; Carbó, Javier; Berlanga, Antonio; Portillo García, Javier Ignacio (2005)
    Article
    Open Access
    In this work, the application of fuzzy logic in surveillance systems based on cameras is Analyzed. Three different fuzzy systems have been tested and compared with a crisp decision system. The first one has been developed ...
  • Approximate fuzzy preorders and equivalences 

    Boixader Ibáñez, Dionís; Recasens Ferrés, Jorge (2009)
    Conference report
    Restricted access - publisher's policy
    Although Fuzzy Preorders and Fuzzy Equivalences are well established types of fuzzy relations, they are defined in terms of properties to be fulfilled in a crisp way. In this paper we relax those requirements by making ...
  • Approximating proximities by similarities 

    Garmendia Salvador, Luis; Recasens Ferrés, Jorge (Univ. Malaga, 2008)
    Conference report
    Open Access
    In this paper an algorithm to find a similarity close to a proximity or tolerance relation R is given. The obtained similarity is closer to R than its transitive closure or any transitive opening of R.
  • Aproximación de Proximidades por Similitudes 

    Garmendia Salvador, Luis; Recasens Ferrés, Jorge (Center for Soft Computing, 2008)
    Conference report
    Open Access
    En este trabajo se presenta un algoritmo para hallar una relaci´on de similitud próxima a una relación de proximidad (i.e.: una relación de tolerancia) R dada. La relación de similitud obtenida es más próxima a R que su ...