Minimal Description and Maximal Description in Covering-based Rough Sets

被引:13
作者
Wang, Zhaohao [1 ]
Shu, Lan [2 ]
Ding, Xiuyong [2 ]
机构
[1] Shanxi Normal Univ, Coll Math & Comp Sci, Linfen 041004, Peoples R China
[2] Univ Elect Sci & Technol China, Sch Math Sci, Chengdu 611731, Peoples R China
关键词
Rough sets; Granular computing; Generalized rough sets; Coverings; Maximal descriptions; Data mining; ALGEBRAIC STRUCTURES; ATTRIBUTE REDUCTION; DECISION SYSTEMS; OPERATORS;
D O I
10.3233/FI-2013-955
中图分类号
TP31 [计算机软件];
学科分类号
081202 ; 0835 ;
摘要
Rough set theory is an important technique in knowledge discovery in databases. In covering-based rough sets, seven types of rough set models were established in recent years. This paper defines the concept of maximal description of an element, and further explores the properties and structures of several types by means of the concepts of maximal description and minimal description. Finally, we study the relationship between covering-based rough sets and the generalized rough sets based on binary relation.
引用
收藏
页码:503 / 526
页数:24
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