基于集对分析的多值信息系统粗集模型及其约简

Rough Set Models of Mulitivalued Information System and Reduction Based on Set Pair Analysis

多值信息系统同时反映了信息的不确定性和不完备性.利用集对联系度定义了多值信息系统的上、下近似运算,并对这种情况下的决策表进行分析,根据该模型的特点提出了α分布约简和α分配约简.

Mulitivalued information systems reflect the uncertainty and incompletion of information. In this paper, by using connection degree of set pairs upper approximation and lower approximation are defined in the system, then decision tables are analyzed in this case, and distribution reduction, assignment reduction are presented.