Short communication: A note on "Rough set theory based on two universal sets and its applications" Knowledge-Based Systems 23 (2010) 110-115

Authors:
Hai-Long Yang
Affiliations:
College of Mathematics and Information Science, Shaanxi Normal University, 710062 Xi'an, PR China
Venue:
Knowledge-Based Systems
Year:
2011

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Abstract

In this paper, we point out that one assertion (Proposition 6.1 (1)) in a previous paper by Liu [G.L. Liu, Rough set theory based on two universal sets and its applications, Knowledge-Based Systems 23 (2) (2010) 110-115] is incorrect by a counterexample. And a correct result is given.