摘要
从二型模糊的角度讨论了模糊地理实体的不确定性,基于空间数据的位置误差,利用模糊集的λ-截集和圆误差带模型推导了模糊地理实体隶属度的误差模型,并给出了隶属度不确定性的度量方法,提出了用隶属度误差立方体来综合描述模糊点的不确定性。
The random uncertainty and fuzziness uncertainty exist in spatial data at the same time. Ant that it is not suitable for using hybrid entropy to deal with the uncertainty of some geographical objects which contain random uncertainty and fuzziness uncertainty. The uncertainty of fuzzy geographical object was discussed by using type-2 fuzzy theory. The error model of membership of vague geographical object was built by using a-cut of fuzzy set and error band of circle based on positional erros. The measure method of the error of membership was analyzed, Finally, the membership grade error cube was proposed to synthetically describe the uncertainty of fuzzy point.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2010年第1期46-50,共5页
Geomatics and Information Science of Wuhan University
基金
国家科技支撑计划资助项目(2008BAK50B01)
中国博士后科学基金资助项目(20080430586)
