合成集值信息系统的属性特征  

Attribute Characterizations of Composed Set-valued Information Systems

作　　者：马建敏[1] 潘笑晨 张文修[2] 

机构地区：[1]长安大学理学院数学与信息科学系,陕西西安710064 [2]西安交通大学理学院信息与系统科学研究所,陕西西安710049

出　　处：《模糊系统与数学》2015年第3期174-180,共7页Fuzzy Systems and Mathematics

基　　金：国家自然科学基金资助项目(10901025);中央高校基金资助项目(CHD2012JC003)

摘　　要：属性特征是研究信息系统中属性重要性的方法之一。本文基于集值信息系统中的拟序关系,给出了对象合成、属性合成集值信息系统,讨论了集值信息系统与合成集值信息系统的协调集、属性特征之间的关系,进而定义了对象(属性)子集值信息系统,研究了子集值信息系统与原集值信息系统等的必要属性及不必要属性之间的关系。Attribute characterization is one of the approaches for studying the attribute importance in information systems. In this paper, object-composed and attribute-composed set-valued information systems are defined based on the preorder relation on a set-valued information system. Then relationships of consistent sets and attribute characterizations between the set-valued information system and the composed set-valued information system are investigated. Furthermore, object/attribute sub-set-valued information systems are shown, and relationships of necessary and unnecessary attributes between the sub-set-valued information system and the original set-valued information system are also discussed.

关 键 词：集值信息系统 拟序关系 合成集值信息系统 子集值信息系统 属性特征 

分 类 号：TP182[自动化与计算机技术—控制理论与控制工程]