1997, Vol. IV, Núm. 3

 

Third Hispano-Polish Symposium on Systems Analysis and Computer Science, 1995.

Summary

  • Valuation based systems for multistage control 

    Wierzchon, S.T. (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
    Article
    Open Access
    In this paper a graphical technique for solving multistage control problems is introduced. Its applicability and generality is demonstrated on examples concerning deterministic systems with deterministic or fuzzy constraints ...

  • Milord II: language description 

    Puyol-Gruart, Josep; Sierra Garriga, Carlos (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
    Article
    Open Access
    In this paper we describe the language Milord. The description is made in terms of computer language concepts and not in terms of the logical semantics underlying it. In this sense the paper complements others in which ...

  • Towards Specifying with Inclusions 

    Agustí Cullell, Jaume; Puigsegur i Figueras, Jordi; Schorlemmer, Wernher Marco (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
    Article
    Open Access
    In this article we present a functional specification language based on inclusions between set expressions. Instead of computing with data individuals we deal with their classification into sets. The specification ...

  • Sedàs: a semantic based general classifier system 

    Valls Mateu, Aïda; Riaño Ramos, David; Torra Ferré, Vicenç (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
    Article
    Open Access
    In this work we present the general classifier system Sedàs. We show how this system implements the description of the domain and how it builds similarity matrices and classification trees. The system uses a new ...

  • Weighting quantitative and qualitative variables in clustering methods 

    Gibert, Karina; Cortés García, Claudio Ulises (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
    Article
    Open Access
    Description of individuals in ill-structured domains produces messy data matrices. In this context, automated classification requires the management of those kind of matrices. One of the features involved in clustering ...

  • Multi-stage genetic fuzzy systems based on the iterative rule learning approach 

    González Muñoz, Antonio; Herrera Triguero, Francisco (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
    Article
    Open Access
    Genetic algorithms (GAs) represent a class of adaptive search techniques inspired by natural evolution mechanisms. The search properties of GAs make them suitable to be used in machine learning processes and for developing ...

  • A genetic algorithm for the multistage control of a fuzzy system in a fuzzy environment 

    Kacprzyk, Janusz (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
    Article
    Open Access
    We discuss a prescriptive approach to multistage optimal fuzzy control of a fuzzy system, given by a fuzzy state transition equation. Fuzzy constraints and fuzzy goals at consecutive control stages are given, and ...

  • Testing satistical hipotheses in fuzzy environment 

    Gregorzewski, Przemyslaw; Hryniewicz, Olgierd (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
    Article
    Open Access
    In traditional statistics all parameters of the mathematical model and possible observations should be well defined. Sometimes such assumption appears too rigid for the real-life problems, especially while dealing ...

  • Neural networks learning as a multiobjective optimal control problem 

    Krawczak, Maciej (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
    Article
    Open Access
    The supervised learning process of multilayer feedforward neural networks can be considered as a class of multi-objective, multi-stage optimal control problem. An iterative parametric minimax method is proposed in which ...

  • Editorial [3rd. Hispano-Polish Symposium on Systems Analysis and Computer Science: selection of papers] 

    Hryniewicz, Olgierd; Esteva Massaguer, Francesc (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
    Review
    Open Access