Granular Structure of Type-2 Fuzzy Rough Sets over Two Universes
Granular Structure of Type-2 Fuzzy Rough Sets over Two Universes
复制标题
两个域上2型模糊粗糙集的粒结构
DOI:
10.3390/sym9110284
复制
发表时间:
2017-11
期刊:
影响因子:
2.7
通讯作者:
Bai Hexiang
中科院分区:
文献类型:
--
作者:
Lu Juan;Li Deyu;Zhai Yanhui;Bai Hexiang
Granular structure plays a very important role in the model construction, theoretical analysis and algorithm design of a granular computing method. The granular structures of classical rough sets and fuzzy rough sets have been proven to be clear. In classical rough set theory, equivalence classes are basic granules, and the lower and upper approximations of a set can be computed by those basic granules. In the theory of fuzzy rough set, granular fuzzy sets can be used to describe the lower and upper approximations of a fuzzy set. This paper discusses the granular structure of type-2 fuzzy rough sets over two universes. Definitions of type-2 fuzzy rough sets over two universes are given based on a wavy-slice representation of type-2 fuzzy sets. Two granular type-2 fuzzy sets are deduced and then proven to be basic granules of type-2 fuzzy rough sets over two universes. Then, the properties of lower and upper approximation operators and these two granular type-2 fuzzy sets are investigated. At last, several examples are given to show the applications of type-2 fuzzy rough sets over two universes.
登录
查看更多内容
DOI:
10.1007/978-3-319-99368-3
发表时间:
2018-10
期刊:
--
影响因子:
--
作者:
R. Efendi;Voni Apriana Dewi;Rahmadeni;Sri Basriati;Dadang Syarif
通讯作者:
R. Efendi;Voni Apriana Dewi;Rahmadeni;Sri Basriati;Dadang Syarif
影响因子:
8.7
作者:
Dai, Jianhua;Xu, Qing
通讯作者:
Xu, Qing
DOI:
10.1016/j.knosys.2012.02.012
发表时间:
2012-09
期刊:
Knowl. Based Syst.
影响因子:
--
作者:
Caihui Liu;Duoqian Miao;N. Zhang
通讯作者:
Caihui Liu;Duoqian Miao;N. Zhang
影响因子:
8.1
作者:
Wu, WZ;Zhang, WX
通讯作者:
Zhang, WX
影响因子:
3.3
作者:
Sun, Bingzhen;Ma, Weimin;Chen, Xiangtang
通讯作者:
Chen, Xiangtang