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	ロバスト空間自己相関	モランのI
分野	空間分析	空間分析
系統	Regression model	Regression model
提唱年	1981–1995	1950
提唱者	Cliff & Ord; extended by Anselin and colleagues	Patrick A. P. Moran
種類	Spatial dependence test (robust variant)	Spatial autocorrelation statistic
原典	Anselin, L., & Florax, R. J. G. M. (1995). Small sample properties of tests for spatial dependence in regression models: some further results. In Anselin, L. & Florax, R. J. G. M. (Eds.), New Directions in Spatial Econometrics. Springer, Berlin.	Moran, P. A. P. (1950). Notes on continuous stochastic phenomena. Biometrika, 37(1/2), 17–23.
別名	robust Moran's I, robust spatial dependence test, outlier-resistant spatial autocorrelation, RSA	Moran's I statistic, global Moran's I, spatial autocorrelation index, Moran index
関連	5	6
概要	Robust spatial autocorrelation methods measure the degree to which nearby geographic units share similar values, while explicitly controlling for the distorting influence of spatial outliers and extreme observations. They extend classical statistics such as Moran's I by down-weighting or trimming observations that would otherwise inflate or deflate the autocorrelation signal.	Moran's I is the standard global statistic for detecting spatial autocorrelation: whether nearby locations tend to share similar values. The index ranges from approximately −1 (perfect dispersion) through 0 (spatial randomness) to +1 (perfect clustering), allowing researchers to test whether a geographic pattern differs from complete spatial randomness with a single, interpretable number.