Rough and rough fuzzy sets on two universes via covering approach

被引：1
|
作者：
Mareay, R. [1 ]
机构：
[1] Kafrelsheikh Univ, Fac Sci, Dept Math, Kafr Al Sheikh 33516, Egypt
来源：
JOURNAL OF INTELLIGENT & FUZZY SYSTEMS | 2016年 / 30卷 / 02期
关键词：
Rough sets; covering; approximation space; strong covering; rough fuzzy sets; MODEL; OPERATORS;
D O I：
10.3233/IFS-151837
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
Rough set theory is an important non-numeric method for dealing with uncertainty and data mining. In this paper, we study rough sets and rough fuzzy sets on two universes via covering models. We introduce a new definition for the lower and upper approximation by taking a covering of the second universe of discourse. Some properties of the new model are revealed. We believe that this model will be more realistic in the sense that rough sets (resp. rough fuzzy sets) are approximated by sets (resp. fuzzy sets) on the same universe. Moreover, some results, examples and counter examples are provided.
引用
收藏
页码：1139 / 1146
页数：8
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