计算机科学 ›› 2015, Vol. 42 ›› Issue (6): 79-81.doi: 10.11896/j.issn.1002-137X.2015.06.018
马丽,米据生
MA Li and MI Ju-sheng
摘要： 经典的信息系统可看作是一种特殊的格结构。从格的角度给出了知识约简和协调集的概念,借助粗糙集的思想定义了一对新的上下近似算子,并在此基础上通过定义可辨识集,给出了约简和相对约简的判定定理。这种表示更深层次地揭示了知识的本质,将知识约简的已有相关结果做了进一步拓广。
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