Attribute reduction of set-valued decision information system based on dominance relation

被引：8
|
作者：
Liu, Yi [1 ,2 ]
Zhong, Chunzhen [1 ,2 ]
机构：
[1] Neijiang Normal Univ, Key Lab Data Recovery Sichuan Prov, Neijiang 641112, Peoples R China
[2] Neijiang Normal Univ, Sch Math & Informat Sci, Neijiang 641112, Peoples R China
来源：
JOURNAL OF INTERDISCIPLINARY MATHEMATICS | 2016年 / 19卷 / 03期
关键词：
Set-valued decision information; System dominance relation; Similarity level; attribute reduction;
D O I：
10.1080/09720502.2015.1047610
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
A new dominance relation is defined in consistent set-valued information systems based on similarity grade of attribute value sets. The problem of attribute reduction and the judgment in consistent set-valued decision information system are studied, from which a new approach to attribute reductions is provided in consistent set-valued decision information system. The assignment reduction is introduced in inconsistent set-valued decision information system in this paper, and it is shown that the inconsistent system can be turned into a generalized consistent approximation space. Furthermore, the influence of similarity level on attribute reduction is discussed.
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页码：469 / 479
页数：11
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