计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (36): 68-72.

• 研究、探讨 • 上一篇    下一篇

几种粗糙集模型的推广研究

王兆浩,舒 兰,丁修勇   

  1. 电子科技大学 数学科学系,成都 611731
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-12-21 发布日期:2011-12-21

On generalization of several rough set models

WANG Zhaohao,SHU Lan,DING Xiuyong   

  1. School of Mathematics Sciences,University of Electronic Science and Technology of China,Chengdu 611731,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-12-21 Published:2011-12-21

摘要: 通过在经典粗糙集模型中引入函数,得到了一个广义的变精度粗糙集模型和一个广义的概率粗糙集模型。将这两个广义的模型进行比较研究,又得到了一个更广义的粗糙集模型,这个模型既是变精度粗糙集模型的推广也是概率粗糙集模型的推广,对推广模型的性质做了相应的研究。

关键词: 变精度粗糙集模型, 概率粗糙集模型, 下近似, 上近似

Abstract: By adding functions into rough set model,the variable precision rough set model and the probability rough set model are generalized.Comparing the two generalized rough set model,the general rough set models of which the variable precision rough set model and the probability rough set model are two exceptional cases is introduced.Some researches on the properties of these generalized models are done.

Key words: variable precision rough set model, probability rough set model, lower approximations, upper approximations