其他摘要:We popularize the classical rough set model in this paper and study rough set in the view of logical operation of equivalence relations. The logical AND rough set model and the logical OR rough set model are proposed on the basis of the operations logical AND and logical OR of equivalence relations. Furthermore, the connection between the logical AND rough set model and Pawlak’s classical rough set model is illustrated. Important properties are discussed in depth and several measures are defined in OR-RS. An example is em-ployed to explain OR-RS.
关键词:粗糙集;等价关系逻辑运算;逻辑“与”粗糙集;逻辑“或”粗糙集
其他关键词:Rough Set; Logical Operation of Equivalence Relations; AND-RS; OR-RS