A new method for approximation of class unions based on dominance-matrix within dominance-based rough set approach

被引：0
|
作者：
Li, M [1 ]
Zhang, BW [1 ]
Wang, T [1 ]
Zhao, L [1 ]
机构：
[1] Lanzhou Univ Technol, Sch Comp & Commun, Lanzhou 730050, Peoples R China
来源：
PROCEEDINGS OF THE 11TH JOINT INTERNATIONAL COMPUTER CONFERENCE | 2005年
关键词：
rough set theory; dominance-based rough set approach; approximation of class unions; dominance-matrix;
D O I：
10.1142/9789812701534_0149
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
Dominance-based Rough Set Approach (DRSA) is an extension of classical Rough Set Theory (RST). Approximation of class unions is a very important approach in DRSA. Aiming at the disadvantage of the classical method we presented a new methodology for approximation of class unions based on dominance-matrix, It only needs to calculate the dominance-matrix. Thus it greatly simplified the process and reduced the complexity by about k times. Besides it is intuitive and efficient. The example illustrates its feasibility and efficiency.
引用
收藏
页码：661 / 665
页数：5
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