摘要
通过分析研究现有集值信息系统下定义的二元关系,基于集合包含度在集值信息系统中引入相似度概念,定义了一种基于相似度的α-相容关系,提出基于α-相容关系的粗糙集扩展模型,并分析比较了该模型与现有粗糙集扩展模型之间的关系。最后,给出实例加以验证。
Kinds of relations in the classical set-valued information systems are analyzed.Based on set inclusion degree,the concept of tolerance degree is introduced in set-valued information systems, and then a tolerance relation based on tolerance degree is defined.An extension model of rough set based on a-tolerance relation is proposed,then the relations between this extension model and classical models are compared.Finally,an illustrative example is analyzed.
出处
《计算机工程与应用》
CSCD
北大核心
2011年第35期22-24,共3页
Computer Engineering and Applications
基金
国家自然科学基金(No.71071045)
国家高技术研究发展计划(863)(No.2008AA042901)~~
关键词
集值信息系统
粗糙集
相似度
α-相容关系
set-valued information systems
rough set
tolerance degree
a -tolerance relation
