Now showing items 1-14 of 14

    • Fuzzy morphological operators in image processing 

      Burillo López, Pedro Upna; Frago Paños, Noé Natalio Upna; Fuentes González, Ramón Upna (Universitat Politècnica de Catalunya, 2003)   Artículo / Artikulua  OpenAccess
      First of all, in this paper we propose a family of fuzzy implication operators, which the generalised Luckasiewicz´s one, and to analyse the impacts of Smets and Magrez properties on these operators. The result of this ...
    • Generation of fuzzy mathematical morphologies 

      Burillo López, Pedro Upna; Frago Paños, Noé Natalio Upna; Fuentes González, Ramón Upna (Universitat Politècnica de Catalunya, 2001)   Artículo / Artikulua  OpenAccess
      Fuzzy Mathematical Morphology aims to extend the binary morphological operators to grey-level images. In order to define the basic morphological operations fuzzy erosion, dilation, opening and closing, we introduce ...
    • Intuitionistic fuzzy relations (Part I) 

      Burillo López, Pedro Upna; Bustince Sola, Humberto Upna (Universitat Politècnica de Catalunya, 1995)   Artículo / Artikulua  OpenAccess
      This paper introduces the concept of intuitionistic fuzzy relation. We also study the choice of t-norms and t-conorms which must be done in order that the composition of intuitionistic fuzzy relations fulfills the largest ...
    • Intuitionistic fuzzy relations (Part II). Effect of Atanassov's operators on the properties of the intuitionistic fuzzy relations 

      Burillo López, Pedro Upna; Bustince Sola, Humberto Upna (Universitat Politècnica de Catalunya, 1995)   Artículo / Artikulua  OpenAccess
      In this paper we study the effect of Atanassov's operator on the properties of properties reflexive, symmetric, antisymmetric, perfect antisymmetric and transitive intuitionistic fuzzy relations. We finish the paper analysing ...
    • A method for inference in approximate reasoning based on normal intuitionistic fuzzy sets 

      Bustince Sola, Humberto Upna; Burillo López, Pedro Upna; Mohedano Salillas, Victoria Upna (Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1995)   Artículo / Artikulua  OpenAccess
      This paper introduces a method of approximate inference which operates with nornal intuitionistic fuzzy. We give a definition of degree of compatibility between intuitionistic fuzzy sets and we present a method for the ...
    • On completeness and direction in fuzzy relational systems 

      Burillo López, Pedro Upna; Fuentes González, Ramón Upna; González, L. (Universitat Politècnica de Catalunya, 1998)   Artículo / Artikulua  OpenAccess
      The concepts of bounded subset, complete subset and directed subset, which are well known in the context of partially ordered sets (X, ≤), are extended in order to become applicable, with coherence, in fuzzy relational ...
    • On contrast intensification operators and fuzzy equality relations 

      Burillo López, Pedro Upna; Fuentes González, Ramón Upna; González, L.; Marín Martínez, Ángel Upna (Universitat Politècnica de Catalunya, 2000)   Artículo / Artikulua  OpenAccess
      The class of contrast intensification operators is formally defined and its lattice structure studied. The effect of these operators in the referential classification derived from special kinds of fuzzy relations is also ...
    • On fuzzy orderings of crisp and fuzzy intervals 

      Fuentes González, Ramón Upna; Burillo López, Pedro Upna; Mayor, Gaspar (EUSFLAT, 2001)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      First, fuzzy membership functions for the assertion '[x,y] is a positive interval' are proposed and characterized via non-decreasing real maps. Last, using those functions together with the intervaldifference and the ...
    • On the intuitionistic fuzzy relations 

      Burillo López, Pedro Upna; Bustince Sola, Humberto Upna; Atanassov, Krassimir (Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1995)   Artículo / Artikulua  OpenAccess
      Intuitionistic fuzzy relations which generalize the already existing relations are introduced and their basic properties are shown.
    • Orderings in the referential set induced by intuitionistic fuzzy relation 

      Burillo López, Pedro Upna; Bustince Sola, Humberto Upna (Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1995)   Artículo / Artikulua  OpenAccess
      In this paper we present different orderings in the referential set induced by intuitionistic fuzzy relations of ordering. We can see how these induced orders justify the definition given of intuitionistic fuzzy antisymmetry ...
    • Overtaker binary relations on complete completely distributive lattices related to the level sets of the L-fuzzy sets 

      Núñez, A.; Burillo López, Pedro Upna; Fuentes González, Ramón Upna; González, L. (Universitat Politècnica de Catalunya, 1994)   Artículo / Artikulua  OpenAccess
      The class of overtaker binary relations associated with the order in a lattice is defined and used to generalize the representations of L-fuzzy sets by means of level sets or fuzzy points.
    • Parametric families of fuzzy consequence operators 

      Elorza Barbajero, Jorge Upna; Burillo López, Pedro Upna (Universitat Politècnica de Catalunya, 2004)   Artículo / Artikulua  OpenAccess
      In a previous paper we explored the notion of coherent fuzzy consequence operator. Since we did not know of any example in the literature of non-coherent fuzzy consequence operator, we also showed several families of such ...
    • Posibles nuevas vías de investigación en teoría de la comunicación a través de modelos matemáticos: análisis topológico 

      Gracia Sanz, Jesús; Burillo López, Pedro Upna (Centro de Investigaciones Sociológicas, 1978)   Artículo / Artikulua  OpenAccess
      Uno de los pocos puntos en los que los metodólogos de las ciencias sociales están de acuerdo es el divorcio existente entre trabajo teórico y trabajo metodológico en las prácticas sociales concretas. Por otro lado, para ...
    • A theorem for constructing interval-valued intuitionistic fuzzy sets from intuitionistic fuzzy sets 

      Bustince Sola, Humberto Upna; Burillo López, Pedro Upna (Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1995)   Artículo / Artikulua  OpenAccess
      In this paper we present a theorem that allows us to construct interval-valued intuitionistic fuzzy sets from intuitionistic fuzzy sets. We also study the way of recovering intuitionistic fuzzy sets used in the construction ...