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Reduct and attribute order
Han, SQ; Wang, J
2004-07-01
发表期刊JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
卷号19期号:4页码:429-449
文章类型Article
摘要Based on the principle of discernibility matrix, a kind of reduction algorithm with attribute order has been developed and its solution has been proved to be complete for reduct and unique for a given attribute order. Being called the reduct problem, this algorithm can be regarded as a mapping R = Reduct(S) from the attribute order space Theta to the reduct space R for an information system , where U is the universe and C and D are two sets of condition and decision attributes respectively. This paper focuses on the reverse problem of reduct problem S = Order(R), i.e., for a given reduct R of an information system, we determine the solution of S = Order(R) in the space Theta. First, we need to prove that there is at least one attribute order S such that S = Order(R). Then, some decision rules are proposed, which can be used directly to decide whether the pair of attribute orders has the same reduct. The main method is based on the fact that an attribute order can be transformed into another one by moving the attribute for limited times. Thus, the decision of the pair of attribute orders can be altered to the decision of the sequence of neighboring pairs of attribute orders. Therefore, the basic theorem of neighboring pair of attribute orders is first proved, then, the decision theorem of attribute order is proved accordingly by the second attribute.
关键词Reduct Attribute Order Rough Set
WOS标题词Science & Technology ; Technology
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:000222789900001
引用统计
被引频次:9[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/173211/9986
专题09年以前成果
作者单位Chinese Acad Sci, Inst Automat, Lab Complex Syst & Intelligence Sci, Beijing 100080, Peoples R China
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GB/T 7714
Han, SQ,Wang, J. Reduct and attribute order[J]. JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,2004,19(4):429-449.
APA Han, SQ,&Wang, J.(2004).Reduct and attribute order.JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,19(4),429-449.
MLA Han, SQ,et al."Reduct and attribute order".JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY 19.4(2004):429-449.
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