Now showing items 1-6 of 6

    • Challenge 1: Integrating knowledge, reasoning and learning 

      Manyà, Felip; Colomé Figueras, Adrià; García de Polavieja, Gonzalo; Ríos Insua, David; Torres Barrán, Alberto; Armengol, Eva; Blum, Christian; Flaminio, Tommaso; Godo Lacasa, Lluís; Levy, Jordi; Meseguer, Pedro; Segovia Aguas, Javier (Consejo Superior de Investigaciones Científicas (CSIC), 2021)
      Part of book or chapter of book
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      Knowledge, reasoning and learning (KRL) play a central role in artificial intelligence (AI) and are instrumental in solving many AI complex problems. In such problems we may have massive amounts of data and imprecise models, ...
    • Fuzzy approximation relations, modal structures and possibilistic logic 

      Esteva Massaguer, Francesc; Garcia, Pere; Godo Lacasa, Lluís; Rodríguez, Ricardo Óscar (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1998)
      Article
      Open Access
      The paper introduces a general axiomatic notion of approximation mapping, a mapping that associates to each crisp proposition p a fuzzy set representing "approximately p". It is shown how it can be obtained through fuzzy ...
    • Lexicographic combinations of preference relations in the context of possibilistic decision theory 

      Godo Lacasa, Lluís; Zapico, Adriana (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2006)
      Article
      Open Access
      In Possibilistic Decision Theory (PDT), decisions are ranked by a pressimistic or by an optimistic qualitative criteria. The preference relations induced by these criteria have been axiomatized by corresponding sets of ...
    • On fuzzy temporal constraint networks 

      Vila, Lluís; Godo Lacasa, Lluís (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1994)
      Article
      Open Access
      Temporal Constraint Networks are a well-defined, natural and efficient formalism for representing temporal knowledge based on metric temporal constraints. They support the representation of both metric and some qualitative ...
    • Putting together Łukasiewicz and product logics 

      Esteva Massaguer, Francesc; Godo Lacasa, Lluís (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1999)
      Article
      Open Access
      In this paper we investigate a propositional fuzzy logical system $\L\Pi$ which contains the well-known \L ukasiewicz, Product and G\"{o}del fuzzy logics as sublogics. We define the corresponding algebraic structures, ...
    • Using fuzzy similiarity relations to revise and update a knwoledge base 

      Rodríguez, Ricardo Óscar; Garcia, Pere; Godo Lacasa, Lluís (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1996)
      Article
      Open Access
      Similarity-based models were first used by Ruspini to give semantics to fuzzy logic ([7]). In these models, incomplete information is represented by an evidential set, i.e. a set of possible worlds that are compatible ...