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- W15218621 abstract "This paper is based on the notion of an information system <U,Ω,V,f> in the sense of Pawlak. Every set of knowledge P ⊆ Ω determines a closure operator on U. The class of Boolean algebras with added operations determined by all sets of know ledge are axiomatixed. As a consequence of the representation theorem information systems can be constructed that have a prescribed lattice of functional dependencies." @default.
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- W15218621 date "1991-04-01" @default.
- W15218621 modified "2023-09-23" @default.
- W15218621 title "An Algebraic Approach to the Approximation of Information" @default.
- W15218621 doi "https://doi.org/10.3233/fi-1991-14406" @default.
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