Rough Set on Concept Lattice

Abstract

A new type formulation of rough set theory can be developed on a binary relation by association on the elements of a universe of finite set of objects with the elements of another universe of finite set of properties.. This paper presents generalization of Pawlak rough set approximation operators on the concept lattices. The notion of rough set approximation is to approximate an undefinable set or concepts through two definable sets. We analyze these and from the results one can obtain a better understanding of data analysis using formal concept analysis and rough set theory.

Key Words: Rough Set, Lattice, Formal Concept, Approximation operators.