手法を比較

	ロバスト Geary's C	ロバスト空間的自己相関の局所指標 (Robust LISA)
分野	空間分析	空間分析
系統	Regression model	Regression model
提唱年	1954 (base); robust variants: 1990s–2000s	1995–2000s
提唱者	Geary (1954); robust extensions by Anselin and spatial statisticians	Anselin (LISA, 1995); robust extensions by Assuncao & Reis and subsequent spatial statisticians
種類	Robust spatial autocorrelation statistic	Local spatial autocorrelation statistic (robust variant)
原典	Geary, R. C. (1954). The contiguity ratio and statistical mapping. The Incorporated Statistician, 5(3), 115–145.	Anselin, L. (1995). Local indicators of spatial association—LISA. Geographical Analysis, 27(2), 93–115.
別名	robust Geary contiguity ratio, outlier-resistant Geary's C, robust spatial contiguity statistic, robust Geary C	Robust LISA, outlier-resistant LISA, robust local spatial autocorrelation, LISA with robust weights
関連	6	6
概要	Robust Geary's C adapts the classical Geary contiguity ratio — a measure of spatial autocorrelation based on pairwise squared differences between neighbouring locations — to resist distortion by spatial outliers and influential observations. It retains the local sensitivity of Geary's C while producing more reliable inferences when the spatial data contain extreme values or non-normal distributions.	Robust Local Indicators of Spatial Association extend Anselin's LISA framework to handle outliers, extreme values, and spatially heterogeneous populations. By applying outlier-resistant adjustments to the spatial weights or the standardised values, Robust LISA identifies statistically significant local clusters and spatial outliers without the distortions caused by highly influential observations.