Author(s): GAO Feng, CHI Chun-mei, Science School, Qingdao Technological University, Computer Engineering School, Qingdao Technological University
Pages: 6-12
Year: 2013 Issue:  5
Journal: Journal of Shandong University(Engineering Science)
Keyword:  rough set; attribute derangement; derangement roughness; best attribute logic flow; imputation of missing data;
Abstract: Attribute derangement in decision tables was proposed.Based on the redundant relations between attributes,the criteria was given for judging which kind of derangement led to rough set and which one w ould not.The notion of derangement roughness was proposed and then the notion of best logic attribute and the best attribute logic flow were put forw ard.It was shown that the best attribute logic flow reflected the causal relations between different attributes in decision tables.Numerical experiment showed that missing data could be imputed effectively by using attribute derangement.