详细信息
文献类型:会议论文
英文题名:Fuzziness in covering generalized rough sets
作者:Xu, Weihua[1];Zhang, Xiaoyan[2]
机构:[1]Xi An Jiao Tong Univ, Fac Sci, Inst Informat & Syst Sci, Xian 710049, Shaanxi, Peoples R China;[2]Guangdong Ocean Univ, Dept Math & Informat, Zhanjiang 524088, Peoples R China
会议论文集:26th Chinese Control Conference
会议日期:JUL 26-31, 2007
会议地点:Zhangjiajie, PEOPLES R CHINA
语种:英文
外文关键词:rough set; covering; fuzzy set; a-cut; nearest ordinary set; index of fuzziness
外文摘要:Rough sets theory has been considered as a useful method to model the uncertainty and has been applied successfully in many fields. And every rough set is associated with some amount of fuzziness. On the other hand, rough sets theory has been generalized with coverings instead of classical partition. So it is necessary to consider the amount of fuzziness in generalized rough sets induced by a covering. In this paper, a measure of fuzziness in generalized rough sets induced by a covering is proposed. Moreover, some characterizations and properties of this measure are shown by examples, which is every useful in future research works of generalized rough sets induced by a covering.
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