多粒度覆盖信息系统的属性约简方法比较  

Comparison of attribute reduction in multi-granularity covering information system

作　　者：李气芳[1] 李进金[1] 林国平[1] 

机构地区：[1]漳州师范学院数学与信息科学系,福建漳州363000

出　　处：《计算机工程与应用》2013年第10期121-124,共4页Computer Engineering and Applications

基　　金：国家自然科学基金(No.10971186;No.11061004)

摘　　要：为拓展覆盖粗糙集模型,用多粒度方法研究了张燕兰等提出的广义覆盖决策信息系统模型,定义了多粒度意义下的覆盖上下近似,提出了多粒度属性约简算法。用实例对多粒度覆盖粗糙集属性约简方法和胡清华等提出的单粒度方法进行了比较。To expand the model of covering rough set, the generalized covering decision information system proposed by Yanlan Zhang is studied using the multi-granularity method in this paper. The upper and lower approximate are defined in the sense of multi-granularity covering rough set, a multi-granularity attribute reduction algorithm is proposed. An example is given to compare the multi-granularity covering rough set attribute reduction method and the single-granularity method proposed by Qinghua Hu.

关 键 词：多粒度 覆盖信息系统 决策信息系统 属性约简 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]