An Extended Rough Set Model for Generalized Incomplete Information Systems Based on α-Limited Dominance Relation

摘要：

　　In this paper,α-limited dominance relation is defined for the classification of universe in the generalized incomplete information systems in which lost and do not care unknown attribute values coexist.Based on the α-limited dominance relation,an extended rough set model is formulated.Moreover,concepts of lower and upper approximations are studied as well as their properties.Finally,an example of evaluation of teaching quality is used to demonstrate that the proposed extended rough set model is feasible and effective in dealing with imprecise and uncertain knowledge.

关键词： Rough set theory Generalized incomplete information system α-limited dominance relation Rough set model

作者: Jing-lan Mo Yue-jin Lv Yan Wu

作者单位: School of Mathematics and Information Sciences, Guangxi University,Nanning 530004,Guangxi, China;Dep School of Mathematics and Information Sciences, Guangxi University,Nanning 530004,Guangxi, China School of Technology, Qiongzhou University, Sanya 572022, Hainan, China

会议类型: 国际会议

会议名称: 2012 2nd international Conference on Materials Science and Information Technology(2012第二届材料科学与信息技术国际会议)(MSIT2012)

会议地点: 西安

会议语种:英文

页码: 1477-1481

在线出版日期: 2012-08-24（万方平台首次上网日期，不代表论文的发表时间）