Generalized fuzzy rough sets

被引：505
|
作者：
Wu, WZ [1 ]
Mi, JS
Zhang, WX
机构：
[1] Xi An Jiao Tong Univ, Fac Sci, Inst Informat & Syst Sci, Xian 710049, Shaanxi, Peoples R China
[2] Zhejiang Ocean Univ, Informat Coll, Zhoushan 316004, Zheijiang, Peoples R China
来源：
INFORMATION SCIENCES | 2003年 / 151卷
关键词：
approximation operators; fuzzy relations; fuzzy rough sets; rough sets;
D O I：
10.1016/S0020-0255(02)00379-1
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a general framework for the study of fuzzy rough sets in which both constructive and axiomatic approaches are used. In constructive approach, a pair of lower and upper generalized approximation operators is defined. The connections between fuzzy relations and fuzzy rough approximation operators are examined. In axiomatic approach, various classes of fuzzy rough approximation operators are characterized by different sets of axioms. Axioms of fuzzy approximation operators guarantee the existence of certain types of fuzzy relations producing the same operators. (C) 2002 Published by Elsevier Science Inc.
引用
收藏
页码：263 / 282
页数：20
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