| 基于相似关系的不完备模糊决策信息系统知识约简 |
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| 引用本文： | 魏大宽.基于相似关系的不完备模糊决策信息系统知识约简[J].湖南师范大学自然科学学报,2006,29(2):18-23. |
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| 作者姓名： | 魏大宽 |
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| 作者单位： | 湖南科技学院信息工程学院,中国,永州,425006;南京理工大学自动化学院,中国,南京,210094 |
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| 摘 要： | 在不完备信息系统和模糊决策信息系统及其粗糙集模型的基础上,提出了不完备模糊决策信息系统的概念,并基于相似关系及其粗糙集模型,给出了不完备模糊决策信息系统的粗糙集模型.该模型是不完备信息系统,完备模糊决策信息系统和经典决策信息系统粗糙集模型的推广.还给出了该系统的知识约简及其算法.
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| 关 键 词： | 粗糙集 非对称相似关系 不完备信息系统 模糊决策信息系统 知识约简 |
| 文章编号： | 1000-2537（2006）02-0018-06 |
| 收稿时间： | 2005-11-07 |
| 修稿时间： | 2005年11月7日 |
Similarity Relation-Based Knowledge Reduction in Incomplete and Fuzzy Decision Information Systems |
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| WEI Da-kuan.Similarity Relation-Based Knowledge Reduction in Incomplete and Fuzzy Decision Information Systems[J].Journal of Natural Science of Hunan Normal University,2006,29(2):18-23. |
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| Authors: | WEI Da-kuan |
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| Institution: | 1. School of Information Engineering, Hunan University of Science and Engineering, Yongzhou 425006, China; 2. School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China |
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| Abstract: | The information systems that the information is incomplete and the decisions are fuzzy exist in many applications.The concept of incomplete and fuzzy decision information systems based on incomplete approximation space and fuzzy decision information system is proposed,and the rough set model of incomplete and fuzzy decision information system is given by use of the non-symmetric similarity relation.The model is the generalization of rough set model of fuzzy decision information system in complete space and of rough set model of incomplete information system,and is superior to the rough set model of incomplete and fuzzy decision information systems based on tolerance.Additionally,the related concepts and the algorithm of knowledge reduction are introduced. |
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| Keywords: | rough set non-symmetric similarity relation incomplete information system fuzzy decision information system knowledge reduction |
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