The information entropy of rough relational databases

	The information entropy of rough relational databases
	Sui, YF ; Xia, YM ; Wang, J
	2003
发表期刊	ROUGH SETS, FUZZY SETS, DATA MINING, AND GRANULAR COMPUTING
ISSN	0302-9743
卷号	2639 页码:320-324
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.
关键词	rough set relational database entropy dependence
收录类别	SCI
语种	英语
WOS研究方向	Computer Science
WOS类目	Computer Science, Artificial Intelligence
WOS记录号	WOS:000184350600048
出版者	SPRINGER-VERLAG BERLIN
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/13662
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.Chinese Acad Sci, Comp Technol Inst, Key Lab Intelligent Informat Proc, Beijing, Peoples R China 2.Yunnan Normal Univ, Dept Comp Sci, Kunming, 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.