Interval valued QL-implications

  • Authors:
  • R. H. S. Reiser;G. P. Dimuro;B. C. Bedregal;R. H. N. Santiago

  • Affiliations:
  • Programa de Pós-Graduação em Informática, Universidade Católica de Pelotas, Pelotas, Brazil;Programa de Pós-Graduação em Informática, Universidade Católica de Pelotas, Pelotas, Brazil;Depto de Informática e Matemática Aplicada, Universidade Federal do Rio Grande do Norte, Natal, Brazil;Depto de Informática e Matemática Aplicada, Universidade Federal do Rio Grande do Norte, Natal, Brazil

  • Venue:
  • WoLLIC'07 Proceedings of the 14th international conference on Logic, language, information and computation
  • Year:
  • 2007

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Abstract

The aim of this work is to analyze the interval canonical representation for fuzzy QL-implications and automorphisms. Intervals have been used to model the uncertainty of a specialist's information related to truth values in the fuzzy propositional calculus: the basic systems are based on interval fuzzy connectives. Thus, using subsets of the real unit interval as the standard sets of truth degrees and applying continuous t-norms, t-conorms and negation as standard truth interval functions, the standard truth interval function of an QL-implication can be obtained. Interesting results on the analysis of interval canonical representation for fuzzy QL-implications and automorphisms are presented. In addition, commutative diagrams are used in order to understand how an interval automorphism acts on interval QL-implications, generating other interval fuzzy QL-implications.