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- 2016
一种基于多层次专题属性约束的空间异常探测方法
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Abstract:
针对现有空间异常探测方法在构建空间邻近域以及准确探测各类空间异常模式方面的局限性,本文提出了一种基于多层次专题属性约束的空间异常探测方法(spatial outlier detection by considering multi-level thematic attribute constraints,MTACSOD)。首先采用层次约束Delaunay三角网构建合理、稳定的空间邻近域;进而根据空间邻接实体间的专题属性距离,针对各空间连通子图施加全局和局部约束;最后通过一个异常模式识别指标提取各类空间异常模式。该方法不需要人为输入参数,通过模拟实验比较和实际应用验证了本文方法的优越性和有效性
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