| 不完备信息系统中知识发现的新方法 |
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| 引用本文： | 许伟.不完备信息系统中知识发现的新方法[J].保定师专学报,2005,18(2):10-13. |
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| 作者姓名： | 许伟 |
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| 作者单位： | 西安交通大学理学院，陕西西安710049 |
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| 摘 要： | 讨论了不完备信息系统中的知识发现问题．带有未知数据的不完备信息系统可以看成集值信息系统．由此提出了不完备信息系统的2种约简方法即概率误差分布约简和平均概率误差约简，以及相应的约简算法．基于约简提出了规则的定义和对象z知识发现的新方法．
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| 关 键 词： | 不完备信息系统 粗糙集 约简 误差 规则 |
| 文章编号： | 1008-4584(2005)02-0010-04 |
New Methods of Knowledge Discovering in Incomplete Information Systems |
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| XU Wei.New Methods of Knowledge Discovering in Incomplete Information Systems[J].Journal of Baoding Teachers College,2005,18(2):10-13. |
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| Authors: | XU Wei |
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| Abstract: | This paper deals with knowledge discovering in incomplete information systems. An incomplete information system with unknown date can be regard as a set-valued system. Then the author present two reduction methods,probability er ror reduction and average probability error reduction in an incomplete informati on system.It is given that reduction algorithm correspondingly. It is proved tha t the definition of the rule based in reduction and present the method of knowle dge discovering of object x. |
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| Keywords: | incomplete information systems rough sets reduction error rules |
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