方法对比
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| Geary's C× | Moran's I× | |
|---|---|---|
| 领域 | 空间分析 | 空间分析 |
| 方法族 | Regression model | Regression model |
| 起源年份≠ | 1954 | 1950 |
| 提出者≠ | Roy C. Geary | Patrick A. P. Moran |
| 类型 | Spatial autocorrelation statistic | Spatial autocorrelation statistic |
| 开创性文献≠ | Geary, R. C. (1954). The Contiguity Ratio and Statistical Mapping. The Incorporated Statistician, 5(3), 115–145. link ↗ | Moran, P. A. P. (1950). Notes on continuous stochastic phenomena. Biometrika, 37(1/2), 17–23. DOI ↗ |
| 别名 | Geary contiguity ratio, Geary C statistic, spatial contiguity ratio, Geary's c | Moran's I statistic, global Moran's I, spatial autocorrelation index, Moran index |
| 相关≠ | 4 | 6 |
| 摘要≠ | 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. | 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. |
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