3PAWLAK Z. Rough sets [ J ]. International Journal of Computer and Information Science, 1982, 11 (5) : 341-356.
4PAWLAK Z. Rough Sets: Theoretical Aspects of Reasoning about Data [ M ]. Boston : Kluwer Academic Publishers Press, 1991:90-166.
5苗夺谦,李道国.粗糙集理论、算法及应用[M].北京:清华大学出版社,2008:176-235.
6YAO Y Y. Decision-theoretic rough set models [ C]// YAO J,Lingras P, Wu W Z, et al. Proceedings of the 2nd International Conference on Rough Sets and Knowledge Technology 2007, Lecture Notes in Computer Science 4481. Heidelberg: Springer, 2007 : 1-12.
7YAO Y Y, WONG S K M. A decision theoretic framework for approximating concepts [ J ]. International Journal of Man-machine Studies, 1992, 37(6) : 793-809.
8YAO Y Y, WONG S K M, LINGRAS P. A decision-theoretic rough set model [ C ]//RAS Z W, ZEMANKOVA M, EMRICHM M L. Proceedings of the 5th International Symposium on Methodologies for Intelligent Systems 1990. North-Holland : [ s. n. ] , 1990 : 17-25.
9YAO Y Y. Probabilistic approaches to rough sets [ J ]. Expert Systems, 2003, 20 : 287-297.
10AN Qiu-sheng,ZHU You-hong. Rough relational database and its development[ J]. Journal of Chongqing Universiey of Posts and Telecommunications (natural science edition) ,2009,21 (4) :474-478.
