摘要
利用集合之间的包含度概念,讨论了覆盖决策信息系统的覆盖决策约简、覆盖分布约简、最大覆盖分布约简之间的关系,讨论了不协调覆盖决策信息系统中覆盖上、下近似约简的刻画及它们与覆盖分布约简、最大覆盖分布约简之间的关系。这些结果推广和深化了决策信息系统约简理论。
By using inclusion degree between sets, the relationships among covering decision reduction, covering distribution reduction and the largest covering distribution reduction about covering decision information system are discussed. Also the characterizations of covering upper and lower approximation reduction about inconsistent covering decision information system and their relationships to covering distribution reduction and the largest covering distribution reduction are studied. The results generalize and deepen the reduction theories of decision information system.
出处
《山东大学学报（理学版）》
CAS
CSCD
北大核心
2010年第1期89-93,共5页
Journal of Shandong University(Natural Science)
基金
国家自然科学基金资助项目(10671173
10971186)
福建省科技计划项目(2008F5066)
福建省教育厅科技项目(JA09165)
漳州师范学院科学研究基金资助项目(SK08005)
关键词
包含度
覆盖决策信息系统
约简
inclusion degree
covering decision information system
reduction
