2005, Vol. XII, Núm. 1

Summary

  • On the central limit theorem on IFS-events 

    Petrovicova, Jozefina; Beloslav, Riecan (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica., 2005)
    Article
    Open Access
    A probability theory on IFS-events has been constructed in [3], and axiomatically characterized in [4]. Here using a general system of axioms it is shown that any probability on IFS-events can be decomposed onto ...

  • A multistrategy approach for digital text 

    Castillo, María Dolores del; Serrano Moreno, José Ignacio (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
    Article
    Open Access
    The goal of the research described here is to develop a multistrategy classifier system that can be used for document categorization. The system automatically discovers classification patterns by applying several empirical ...

  • A heuristic forecasting model for stock decision 

    Zhang, D.; Jiang, Q.; Li, X. (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
    Article
    Open Access
    This paper describes a heuristic forecasting model based on neural networks for stock decision-making. Some heuristic strategies are presented for enhancing the learning capability of neural networks and obtaining ...

  • On the transfer principle in fuzzy theory 

    Kondo, Michiro; Dudek, Wieslaw A. (Univerisitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica., 2005)
    Article
    Open Access
    We show in this paper that almost all results proved in many papers about fuzzy algebras can be proved uniformly and immediately by using so-called “Transfer Principle”.

  • A fuzzy logic approach to assembly line 

    Fonseca, Daniel J.; Elam, Matthew; Karr, Charles L.; Guest, C.L. (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
    Article
    Open Access
    This paper deals with the use of fuzzy set theory as a viable alternative method for modelling and solving the stochastic assembly line balancing problem. Variability and uncertainty in the assembly line balancing ...

  • A note on the symmetric difference in lattices 

    Renedo, Eloy; Trillas i Gay, Enric; Alsina Català, Claudi (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
    Article
    Open Access
    The paper introduces a definition of symmetric difference in lattices with negation, presents its general properties and studies those that are typical of ortholattices, orthomodular lattices, de Morgan and boolean algebras.