Invariant functionals on completely distributive lattices
Cardin, Marta; Couceiro, Miguel (2011), Invariant functionals on completely distributive lattices, Fuzzy Sets and Systems, 167, 1, p. 45-56. http://dx.doi.org/10.1016/j.fss.2010.03.018
Type
Article accepté pour publication ou publiéExternal document link
http://arxiv.org/abs/0911.0903Date
2011Journal name
Fuzzy Sets and SystemsVolume
167Number
1Publisher
Elsevier
Pages
45-56
Publication identifier
Metadata
Show full item recordAbstract (EN)
In this paper we are interested in functionals defined on completely distributive lattices and which are invariant under mappings preserving arbitrary joins and meets. We prove that the class of nondecreasing invariant functionals coincides with the class of Sugeno integrals associated with {0,1}-valued capacities, the so-called term functionals, thus extending previous results both to the infinitary case as well as to the realm of completely distributive lattices. Furthermore, we show that, in the case of functionals over complete chains, the nondecreasing condition is redundant. Characterizations of the class of Sugeno integrals, as well as its superclass comprising all polynomial functionals, are provided by showing that the axiomatizations (given in terms of homogeneity) of their restriction to finitary functionals still hold over completely distributive lattices. We also present canonical normal form representations of polynomial functionals on completely distributive lattices, which appear as the natural extensions to their finitary counterparts, and as a by-product we obtain an axiomatization of complete distributivity in the case of bounded lattices.Subjects / Keywords
Completely distributive lattice; Aggregation functional; Invariance; Continuous mapping; Lattice polynomial; Sugeno integral; Lattice term functionalRelated items
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