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| 全局 Getis-Ord Gi* 统计量× | 局部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 | 1992–1995 |
| 提出者 | Arthur Getis and J. Keith Ord | Arthur Getis and J. Keith Ord |
| 类型≠ | Global spatial clustering statistic | Local spatial association statistic |
| 开创性文献≠ | Getis, A., & Ord, J. K. (1992). The analysis of spatial association by use of distance statistics. Geographical Analysis, 24(3), 189-206. 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 | Global G statistic, Getis-Ord General G, General G*, Global spatial clustering statistic | Gi* statistic, Getis-Ord Gi*, local G-star, hot spot statistic |
| 相关 | 5 | 5 |
| 摘要≠ | The Global Getis-Ord Gi* statistic measures the overall degree of spatial clustering of high or low values across an entire study region. It answers whether the study area, taken as a whole, exhibits significant concentration of high values (hot clustering) or low values (cold clustering), returning a single summary Z-score for the entire dataset. | The Local Getis-Ord Gi* statistic identifies statistically significant spatial clusters of high values (hot spots) and low values (cold spots) within a study area. Unlike global measures, it produces a z-score for every location, revealing where concentrated clustering occurs and with what statistical confidence. |
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