6 papers
Reducing fuzzy relation equations via concept lattices
David Lobo, VÃctor López-Marchante, Jesús Medina
This paper has taken into advantage the relationship between Fuzzy Relation Equations (FRE) and Concept Lattices in order to introduce a procedure to reduce a FRE, without losing i…
Extended multi-adjoint logic programming
M. Eugenia Cornejo, David Lobo, Jesús Medina
Extended multi-adjoint logic programming arises as an extension of multi-adjoint normal logic programming where constraints and a special type of aggregator operator have been incl…
On the solvability of bipolar max-product fuzzy relation equations with the product negation
M. Eugenia Cornejo, David Lobo, Jesús Medina
This paper studies the solvability of the max-product fuzzy relation equations in which a negation operator is considered. Specifically, the residuated negation of the product t-no…
On the solvability of bipolar max-product fuzzy relation equations with the standard negation
M. Eugenia Cornejo, David Lobo, Jesús Medina
Bipolar fuzzy relation equations arise when unknown variables together with their logical negations appear simultaneously in fuzzy relation equations. This paper gives a characteri…
Bipolar fuzzy relation equations systems based on the product t-norm
M. Eugenia Cornejo, David Lobo, Jesús Medina
Bipolar fuzzy relation equations arise as a generalization of fuzzy relation equations considering unknown variables together with their logical connective negations. The occurrenc…
Syntax and semantics of multi-adjoint normal logic programming
M. Eugenia Cornejo, David Lobo, Jesús Medina
Multi-adjoint logic programming is a general framework with interesting features, which involves other positive logic programming frameworks such as monotonic and residuated logic…