Aggregating Fuzzy QL- and (S,N)-Subimplications: Conjugate and Dual Constructions

Authors

  • Renata Hax Sander Reiser UFPEL - Univerisdade Federal de Pelotas
  • Íbero C. K. Benítez UFPEL - Univerisdade Federal de Pelotas
  • Adenauer C. Yamin UFPEL - Univerisdade Federal de Pelotas
  • Benjamín R. C. Bedregal UFRN - Universidade Federal do Rio Grande do Norte

DOI:

https://doi.org/10.5540/tema.2015.016.03.0229

Keywords:

Median aggregation, t-sub(co)norms, Fuzzy (sub)implications, QL-implications, (S, N)-implications.

Abstract

Fuzzy (S,N)- and QL-subimplication classes can be obtained by a distributive n-ry aggregation  performed over the families of t-subnorms and t-subconorms along with a fuzzy negation. Since these classes of subimplications are explicitly represented by t-subconorms and t-subnorms verifying the generalized associativity, the corresponding (S,N)- and QL-subimplications,  referred as I(S,N) and I_(S,T,N), are  characterized as distributive n-ary aggregation together with related generalizations as the exchange and neutrality principles. Based on these results, the both subclasses I_(S,n) and I_QL of (S,N)- and QL-subimplications which are obtained by the median aggregation operation performed over the standard negation N_S together with  the families  of t-subnorms and t-subconorms S_P and T_P, respectively. In particular, the subclass T_P extends the product t-norm T_P as well as S_P extends the algebraic sum S_P. As the main results, the family of subimplications I_(S_P,N) and I_(S_P,T_P,N) extends the implication class by preserving the corresponding properties. We also present an extension from (S,N)- and QL-subimplications to (S,N)- and QL-implications and discuss dual and conjugate constructions.

Author Biographies

Renata Hax Sander Reiser, UFPEL - Univerisdade Federal de Pelotas

Centro de Desenvolvimento Tecnológico

PPGC Computação

Íbero C. K. Benítez, UFPEL - Univerisdade Federal de Pelotas

Centro de Desenvolvimento Tecnológico

PPGC Computação

Adenauer C. Yamin, UFPEL - Univerisdade Federal de Pelotas

Centro de Desenvolvimento Tecnológico

PPGC Computação

Benjamín R. C. Bedregal, UFRN - Universidade Federal do Rio Grande do Norte

DIMAP - Departamento de Informática e Matemática Aplicada

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Published

2016-01-28

How to Cite

Reiser, R. H. S., Benítez, Íbero C. K., Yamin, A. C., & Bedregal, B. R. C. (2016). Aggregating Fuzzy QL- and (S,N)-Subimplications: Conjugate and Dual Constructions. Trends in Computational and Applied Mathematics, 16(3), 229. https://doi.org/10.5540/tema.2015.016.03.0229

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