مقایسهٔ روشها
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| خودهمبستگی فضایی× | نسبت پیوستگی جیری (Geary's C)× | |
|---|---|---|
| حوزه | تحلیل فضایی | تحلیل فضایی |
| خانواده | Regression model | Regression model |
| سال پیدایش≠ | 1950 | 1954 |
| پدیدآور≠ | P. A. P. Moran (global measure, 1950); Roy Geary (Geary's C, 1954); Luc Anselin (LISA, 1995) | Roy C. Geary |
| نوع≠ | Spatial statistic / exploratory spatial data analysis | Spatial autocorrelation statistic |
| منبع بنیادین≠ | Moran, P. A. P. (1950). Notes on continuous stochastic phenomena. Biometrika, 37(1/2), 17–23. DOI ↗ | Geary, R. C. (1954). The Contiguity Ratio and Statistical Mapping. The Incorporated Statistician, 5(3), 115–145. link ↗ |
| نامهای دیگر | spatial dependence, geographic autocorrelation, spatial clustering measure, SA | Geary contiguity ratio, Geary C statistic, spatial contiguity ratio, Geary's c |
| مرتبط≠ | 5 | 4 |
| خلاصه≠ | Spatial autocorrelation quantifies the degree to which a variable's values at nearby locations resemble each other more (positive autocorrelation) or less (negative autocorrelation) than expected by chance. Global indices such as Moran's I summarise the pattern across the entire study area, while local variants reveal clusters and outliers at the level of individual observations. | 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. |
| ScholarGateمجموعهداده ↗ |
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