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| 局部热点分析 (Getis-Ord Gi*)× | Getis-Ord Gi* 热点分析× | |
|---|---|---|
| 领域 | 空间分析 | 空间分析 |
| 方法族 | Regression model | Regression model |
| 起源年份≠ | 1992-1995 | 1992 |
| 提出者≠ | Getis & Ord; Ord & Getis | Arthur Getis and J. Keith Ord |
| 类型 | Local spatial statistic | Local spatial statistic |
| 开创性文献≠ | Ord, J. K., & Getis, A. (1995). Local spatial autocorrelation statistics: Distributional issues and an application. Geographical Analysis, 27(4), 286-306. DOI ↗ | Getis, A., & Ord, J. K. (1992). The analysis of spatial association by use of distance statistics. Geographical Analysis, 24(3), 189-206. DOI ↗ |
| 别名 | local Getis-Ord Gi*, Gi* statistic, spatial hot spot detection, local spatial clustering | Getis-Ord Gi* statistic, spatial hot spot detection, cluster and outlier analysis, HSA |
| 相关 | 5 | 5 |
| 摘要≠ | Local Hot Spot Analysis uses the Getis-Ord Gi* statistic to identify specific geographic locations where high or low values cluster together more than expected by chance. Unlike global measures that return a single summary for the whole study area, this local statistic produces a z-score for each feature, pinpointing exactly where statistically significant hot spots and cold spots occur. | Hot Spot Analysis uses the Getis-Ord Gi* local spatial statistic to identify geographic locations where high or low attribute values cluster together to a degree that is statistically significant. Each feature is evaluated in relation to its neighbours, producing a z-score that flags genuine spatial hot spots and cold spots against a background of random variation. |
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