Reduction algorithm meeting users' requirements

CASIA OpenIR > 09年以前成果

	Reduction algorithm meeting users' requirements
	Zhao, K; Wang, J
发表期刊	JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
	2002-09-01
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：28[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
推荐引用方式 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.