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Reduction algorithm meeting users' requirements
Zhao, K; Wang, J
Source PublicationJOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
2002-09-01
Volume17Issue:5Pages:578-593
SubtypeArticle
AbstractGenerally 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.
KeywordRequirement-oriented Knowledge Discovery Attribute Order Discernibility Matrix Reduction Algorithm
WOS HeadingsScience & Technology ; Technology
WOS KeywordDISCERNIBILITY MATRIX ; ROUGH SETS ; BIAS
Indexed BySCI
Language英语
WOS Research AreaComputer Science
WOS SubjectComputer Science, Hardware & Architecture ; Computer Science, Software Engineering
WOS IDWOS:000178233400007
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/9865
Collection09年以前成果
AffiliationChinese Acad Sci, Inst Automat, Beijing 100080, Peoples R China
Recommended Citation
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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