Reduction algorithm meeting users' requirements

	Reduction algorithm meeting users' requirements
	Zhao, K; Wang, J
刊名	JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
	2002-09-01
卷号	17 期号:5 页码:578-593
关键词	requirement-oriented knowledge discovery attribute order discernibility matrix reduction algorithm
英文摘要	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.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Computer Science, Hardware & Architecture ; Computer Science, Software Engineering
研究领域[WOS]	Computer Science
关键词[WOS]	DISCERNIBILITY MATRIX ; ROUGH SETS ; BIAS
收录类别	SCI
语种	英语
WOS记录号	WOS:000178233400007
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.ia.ac.cn/handle/173211/9865]
专题	自动化研究所_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.