手法を比較

	空間時間的 Geary の C	Geary's C
分野	空間分析	空間分析
系統	Regression model	Regression model
提唱年	1954 / 2010s	1954
提唱者	Geary (1954); extended to space-time by Anselin and others	Roy C. Geary
種類	Spatial autocorrelation statistic	Spatial autocorrelation statistic
原典	Geary, R. C. (1954). The Contiguity Ratio and Statistical Mapping. The Incorporated Statistician, 5(3), 115-145.	Geary, R. C. (1954). The Contiguity Ratio and Statistical Mapping. The Incorporated Statistician, 5(3), 115–145.
別名	ST-Geary's C, spatiotemporal Geary C, space-time contiguity ratio, space-time local spatial autocorrelation	Geary contiguity ratio, Geary C statistic, spatial contiguity ratio, Geary's c
関連	6	4
概要	Space-Time Geary's C extends the classical Geary contiguity ratio to panel or longitudinal spatial data, measuring autocorrelation across both geographic neighbors and adjacent time periods simultaneously. Values below 1 indicate positive space-time clustering; values above 1 indicate dispersion, and a value near 1 suggests random arrangement across the space-time lattice.	Geary's C is a global spatial autocorrelation statistic that measures whether nearby areal units share similar attribute values. Unlike Moran's I, it focuses on squared differences between adjacent pairs rather than cross-products of deviations from the mean, making it more sensitive to local dissimilarity and less influenced by global trends.