计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (5): 27-28.

• 研究、探讨 • 上一篇    下一篇

覆盖模糊S-粗集模型

刘俊兰1,姚炳学1,田申新2   

  1. 1.聊城大学 数学科学学院,山东 聊城 252059
    2.高唐县第一实验小学,山东 聊城 252800
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-02-11 发布日期:2011-02-11

Covering fuzzy S-rough sets model

LIU Junlan1,YAO Bingxue1,TIAN Shenxin2   

  1. 1.School of Mathematics Science,Liaocheng University,Liaocheng,Shandong 252059,China
    2.Gaotang First Experiment Primary School,Liaocheng,Shandong 252800,China

  • Received:1900-01-01 Revised:1900-01-01 Online:2011-02-11 Published:2011-02-11

摘要: 建立了基于覆盖理论的模糊S-粗糙集模型,并讨论其性质。在覆盖单向S-粗集x的最小描述的基础上,给出了x的最大描述的定义。给出了覆盖模糊S-粗集上 、下近似算子定义,讨论了算子的基本性质,证明了覆盖S-粗糙集模型下所有模糊集的下近似构成一个模糊拓扑,并得到模糊单向S-粗集X相对于覆盖单向S-粗集和覆盖约简单向S-粗集的上下近似分别相等。

关键词: 覆盖, 近似算子, 覆盖模糊S-粗集

Abstract: This paper is devoted to the study of the covering fuzzy S-rough sets model.The maximal description of x of covering one direction singular rough sets is given based on the minimal description of x.The upper and lower approximation operations are defined with their basic properties being discussed.It is proved that the set of all lower approximations of fuzzy sets constitutes a fuzzy topology.The upper and lower approximations of fuzzy one direction singular rough sets are respectively equal after covering is reducted.

Key words: covering, approximation operation, covering fuzzy S-rough sets