| 基于不完备信息系统粗集逼近中的粒度原理 |
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| 引用本文： | 万金凤.基于不完备信息系统粗集逼近中的粒度原理[J].计算机工程与应用,2006,42(11):55-56. |
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| 作者姓名： | 万金凤 |
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| 作者单位： | 山西师范大学数学与计算机科学学院,临汾,041004 |
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| 基金项目： | 山西师范大学校科研和教改项目 |
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| 摘 要： | 粗糙集是一种新型的处理模糊和不确定知识的数学工具。经典粗糙集理论是建立在完备信息系统基础上的,然而在实际中,不完备信息系统的广泛存在极大地限制了粗糙集理论的应用。文章利用粗集中的精度,结合信息粒度原理,对不完全信息系统利用序列套导出其粒度分层结构和基于相容关系的粗集逼近。
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| 关 键 词： | 粗糙集 不完备信息系统 相容关系 逼近 |
| 文章编号： | 1002-8331-（2006）11-0055-02 |
| 收稿时间： | 2005-01-01 |
| 修稿时间： | 2005-01-01 |
Principle of Granularity in Rough Sets Approximation Based on Incomplete Information Systems |
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| Wan Jinfeng.Principle of Granularity in Rough Sets Approximation Based on Incomplete Information Systems[J].Computer Engineering and Applications,2006,42(11):55-56. |
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| Authors: | Wan Jinfeng |
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| Affiliation: | College of Mathematics and Computer Science,Shanxi Teachers University, Linfen 041004 |
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| Abstract: | Rough Set theory is a new mathematicas tool dealing with vagueness and uncertainty.The theory of classical rough set is based on the complete information system.However,there exist incomplete information systems in fact which limit the application of the theory of rough set.For the incomplete information system ,applying to the accurate in rough set and combining the principle of information granulation,we introduce the hierachical structure of granularity and the approximation of the rough set by a nested sequence of tolerance relation. |
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| Keywords: | rough set incomplete information system tolerance relation approximation |
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