Spatio-Temporal outliers detection within the space-time framework
Zhao Ling · National Remote Sensing Bulletin · 2011
A novel spatio-temporal outlier detection method within the space-time framework is proposed in this paper.Firstly,a unified framework is developed for constructing spatio-temporal neighborhood,which is based on the space-time statistics and clustering analysis.Then,a spatio-temporal outlier measure involving space-time autocorrelation and heterogeneity is presented.Finally,a tree-step strategy is utilized to detect spatio-temporal outliers.Our method is employed to detect spatio-temporal outliers in Chinese annual temperature database(1970—2002).A meaningful analysis of the spatio-temporal outliers is also provided.