The information entropy of rough relational databases

CORC > 计算技术研究所 > 中国科学院计算技术研究所 > 中国科学院计算技术研究所期刊论文 > 英文

	The information entropy of rough relational databases
	Sui, YF ; Xia, YM ; Wang, J
刊名	ROUGH SETS, FUZZY SETS, DATA MINING, AND GRANULAR COMPUTING
	2003
卷号	2639 页码:320-324
关键词	rough set relational database entropy dependence
ISSN号	0302-9743
英文摘要	Beaubouef, Petry and Buckles proposed the generalized rough set database analysis (GRSDA) to discuss rough relational databases. Given any rough relational database (U, A) and an attribute a is an element of A, as in rough set theory, a definition of the lower and upper approximations based on phi(a) is given. The entropy and conditional entropy of similarity relations in a rough relational database are defined. The examples show that the entropy of a similarity relation does not decrease as the similarity relation is refined. It will be proved that given any two similarity relations phi and psi, defined by a set C of conditional attributes and a decision attribute d, respectively, if d similarly depends on C in a rough relational database then the conditional entropy of phi with respect to psi is equal to the entropy of phi.
WOS研究方向	Computer Science
语种	英语
出版者	SPRINGER-VERLAG BERLIN
WOS记录号	WOS:000184350600048
内容类型	期刊论文
源URL	[http://119.78.100.204/handle/2XEOYT63/13661]
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Sui, YF
作者单位	1.Yunnan Normal Univ, Dept Comp Sci, Kunming, Peoples R China 2.Chinese Acad Sci, Comp Technol Inst, Key Lab Intelligent Informat Proc, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Software, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Sui, YF,Xia, YM,Wang, J. The information entropy of rough relational databases[J]. ROUGH SETS, FUZZY SETS, DATA MINING, AND GRANULAR COMPUTING,2003,2639:320-324.
APA	Sui, YF,Xia, YM,&Wang, J.(2003).The information entropy of rough relational databases.ROUGH SETS, FUZZY SETS, DATA MINING, AND GRANULAR COMPUTING,2639,320-324.
MLA	Sui, YF,et al."The information entropy of rough relational databases".ROUGH SETS, FUZZY SETS, DATA MINING, AND GRANULAR COMPUTING 2639(2003):320-324.