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Reduction algorithm meeting users' requirements
Zhao, K; Wang, J
2002-09-01
发表期刊JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
卷号17期号:5页码:578-593
文章类型Article
摘要Generally a database encompasses various kinds of knowledge and is shared by many users. Different users may prefer different kinds of knowledge. So it is important for a data mining algorithm to output specific knowledge according to users' current requirements (preference). We call this kind of data mining requirement-oriented knowledge discovery (ROKD). When the rough set theory is used in data mining, the ROKD problem is how to find a reduct and corresponding rules interesting for the user. Since reducts and rules are generated in the same way, this paper only concerns with how to find a particular reduct. The user's requirement is described by an order of attributes, called attribute order, which implies the importance of attributes for the user. In the order, more important attributes are located before less important ones. Then the problem becomes how to find a reduct including those attributes anterior in the attribute order. An approach to dealing with such a problem is proposed. And its completeness for reduct is proved. After that, three kinds of attribute order are developed to describe various user requirements.
关键词Requirement-oriented Knowledge Discovery Attribute Order Discernibility Matrix Reduction Algorithm
WOS标题词Science & Technology ; Technology
关键词[WOS]DISCERNIBILITY MATRIX ; ROUGH SETS ; BIAS
收录类别SCI
语种英语
WOS研究方向Computer Science
WOS类目Computer Science, Hardware & Architecture ; Computer Science, Software Engineering
WOS记录号WOS:000178233400007
引用统计
被引频次:25[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/9865
专题09年以前成果
作者单位Chinese Acad Sci, Inst Automat, Beijing 100080, Peoples R China
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GB/T 7714
Zhao, K,Wang, J. Reduction algorithm meeting users' requirements[J]. JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,2002,17(5):578-593.
APA Zhao, K,&Wang, J.(2002).Reduction algorithm meeting users' requirements.JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,17(5),578-593.
MLA Zhao, K,et al."Reduction algorithm meeting users' requirements".JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY 17.5(2002):578-593.
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