文献类型：会议论文

英文题名：A novel approach to roughness measure in fuzzy rough sets

作者：Zhang, Xiao-yan[1];Xu, Wei-hua[2]

机构：[1]Guangdong Ocean Univ, Dept Math & Informat Sci, Zhanjiang 524088, Peoples R China;[2]Jiaotong Univ, Inst Informat & Syst Sci, Xian 710049, Peoples R China

会议论文集：2nd International Conference on Fuzzy Information and Engineering (ICFIE 2007)

会议日期：MAY 13-16, 2007

会议地点：Guangzhou, PEOPLES R CHINA

语种：英文

外文关键词：fuzzy set; fuzzy rough set; lambda-level fuzzy set; the lower and the upper approximation; roughness measure

外文摘要：A hot topic of rough set theory is the combination of fuzzy set theory and this one. Many researchers do the work by introducing the concept of level fuzzy sets. In this paper, we will study roughness measure in fuzzy rough set in this way, too. The lower and the upper approximation based on A-level fuzzy set will be proposed, and their properties be discussed. Moreover we introduced the new method to the roughness measure in fuzzy rough sets according to these concepts.