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Zbl 1060.03040
Bělohlávek, Radim
Concept lattices and order in fuzzy logic. (English)
[J] Ann. Pure Appl. Logic 128, No. 1-3, 277-298 (2004). ISSN 0168-0072

The paper presents a generalization of the theory of concept lattices that were originated and further studied by R. Wille and his school [{\it R. Wille}, ``Restructuring lattice theory: an approach based on hierarchies of concepts'', in: Ordered sets, Proc. NATO Adv. Study Inst., Banff/Can. 1981, 445--470 (1982; Zbl 0491.06008)]. The theory is based on a generalization to the structure of truth values forming a residuated lattice, where the adjointness condition is an algebraic counterpart of the many-valued modus ponens rule of fuzzy logic. \par In the paper, the notions of fuzzy partial order ({\bf L}-order) with respect to some fuzzy equality relation, lattice order, and fuzzy formal concepts are studied. The main result is a theorem characterizing the hierarchical structure of formal fuzzy concepts arising in a given formal fuzzy context. The paper ends with a theorem on Dedekind-MacNeille completion for fuzzy orders.
[Vilém Novák (Ostrava)]

MSC 2000:: *03B52 Fuzzy logic
06A15 Galois correspondences (ordered structures)
06D72 Fuzzy lattices etc.

Keywords: fuzzy logic; concept lattice; formal concept analysis; fuzzy order

Citations: Zbl 0491.06008

Cited in: Zbl 1191.68658 Zbl 1187.06003 Zbl 1119.06004 Zbl 1088.06005

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