不完备序信息系统下的局部双量化决策粗糙集研究

Research on local double relative quantitative decision-theoretic rough set for incomplete ordered information system

针对不完备序信息系统,在双量化粗糙集和局部决策粗糙集的基础上,构建了2种局部双量化决策粗糙集(local double relative quantitative decision-theoretic rough set, LDrq-DTRS)模型,探讨了它们的正域、负域、边界域之间的包含关系,以及它们与局部粗糙集之间的内在联系。最后,通过数据实验比较验证了在不同模型参数关系下以上模型间的相关性质。

This study focuses on the incomplete order information system based on the double relative quantitative rough set and the local decision-theoretic rough set. Two kinds of local double relative quantitative decision-theoretic rough set(LDrq-DTRS) models are established, and their inclusion relationships in terms of positive, negative and boundary regions are discussed. In addition, the inner relationship between LDrq-DTRS and local rough set is also examined. Finally, the related properties are verified by employing a numerical experiments under different parameters.