The approximation set of a vague set in rough approximation space

Fuzzy sets

L. A. Zadeh · Information and Control · 1965 · 66.1K citations

Intuitionistic fuzzy sets

Krassimir Atanassov · Fuzzy Sets and Systems · 1986 · 16.2K citations · Full text

Rough sets

Zdzis aw Pawlak · International Journal of Parallel Programming · 1982 · 12.1K citations

Computing, Computer Science, Mathematics +10

Vague sets

Wen-Bing Gau, Daniel J. Buehrer · IEEE Transactions on Systems Man and Cybernetics · 1993 · 1.6K citations

Natural Sciences, Mathematics, Set Theory +4

Relational interpretations of neighborhood operators and rough set approximation operators

Yiyu Yao · Information Sciences · 1998 · 1K citations

Natural Sciences, Mathematics, Discrete Mathematics +14