참고문헌
- M. De Baets, R. Mesiar, Psedo-metrics and T-equivalences, J. Fuzzy. Math. 5 (1997) 471-481
- M. De Baets, R. Mesiar, Metrics and T-equalities, J. Math. Anal. 267 (2002) 531-547 https://doi.org/10.1006/jmaa.2001.7786
- M. Demirci, Fuzzy functions and their applications, J. Math. Anal. Appl. 252, pp.495-517.2000 https://doi.org/10.1006/jmaa.2000.7185
- D. Dubois, H. Prade, Rough fuzzy sets and fuzzy rough sets, Int. J. General Systems 17 (2-3), pp191-209, 1990 https://doi.org/10.1080/03081079008935107
- D. Dubois, H. Prade, Twofold fuzzy sets and rough sets, Fuzzy Sets and Systems 23, pp 3-18, 1987 https://doi.org/10.1016/0165-0114(87)90096-0
- U. Hoehle, Quotients with respect to similarity relations, Fuzzy Sets and Systems 27, pp. 31-44. 1988 https://doi.org/10.1016/0165-0114(88)90080-2
- J. Jacas, J. Recasens, Fuzzy T-transitive relations: eigenvectors and generators, Fuzzy Sets and Systems 72, 147-154. 1995 https://doi.org/10.1016/0165-0114(94)00347-A
- H.T. Nguyen, E.A. Walker, Fuzzy logic, Chapman and Hall, New York, 2000
- N.N. Morsi and M.M. Yakout, Axiomatics for fuzzy rough sets, Fuzzy Sets and Systems, 100,pp 327-342, 1998 https://doi.org/10.1016/S0165-0114(97)00104-8
- Z. Pawlak, Rough sets, Int.J. Comput. Inform. Sci. 11(5), pp.341-356, 1982 https://doi.org/10.1007/BF01001956
- L. Valverde, On the structure of F-indistinguishability operators, Fuzzy Sets and Systems, 17, 313-328. 1985 https://doi.org/10.1016/0165-0114(85)90096-X
- Y.Y. Yao, Constructive and algebraic methods of the theory of rough sets, Information Sciences, 109 pp. 21-47. 1998 https://doi.org/10.1016/S0020-0255(98)00012-7
- Y.Y. Yao, Relational interpretations of neighbor hood operators and rough set approximation operators, Information Sciences, 111 pp. 239-259. 1998 https://doi.org/10.1016/S0020-0255(98)10006-3
- L.A. Zadeh, Similarity relations and fuzzy orderings, Information Sciences. 3 (1971) 177-200 https://doi.org/10.1016/S0020-0255(71)80005-1