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| Analiza Gorących Punktów Getisa-Orda Gi*× | Współczynnik C Geary'ego – globalna miara autokorelacji przestrzennej× | |
|---|---|---|
| Dziedzina | Analiza przestrzenna | Analiza przestrzenna |
| Rodzina≠ | Regression model | Hypothesis test |
| Rok powstania≠ | 1992 | 1954 |
| Twórca≠ | Arthur Getis and J. Keith Ord | Roy C. Geary |
| Typ≠ | Local spatial statistic | Global spatial autocorrelation statistic |
| Źródło pierwotne≠ | Getis, A. & Ord, J.K. (1992). The Analysis of Spatial Association by Use of Distance Statistics. Geographical Analysis, 24(3), 189–206. DOI ↗ | Geary, R. C. (1954). The contiguity ratio and statistical mapping. The Incorporated Statistician, 5(3), 115–146. DOI ↗ |
| Inne nazwy≠ | hot spot analysis, cold spot analysis, Gi* statistic, local Gi statistic | Geary contiguity ratio, Geary's contiguity ratio, global spatial autocorrelation, Geary C mekânsal otokorelasyon |
| Pokrewne≠ | 4 | 2 |
| Podsumowanie≠ | Getis-Ord Gi* is a local spatial statistic, introduced by Getis and Ord in 1992 and refined in 1995, that compares the value at each location and its neighbours against the global mean to identify statistically significant clusters of high values (hot spots) and low values (cold spots). | Geary's C is a global measure of spatial autocorrelation — whether nearby locations tend to have similar values — introduced by Roy Geary in 1954. Unlike Moran's I, which is built on the covariation of values around the mean, Geary's C is built on the squared differences between neighbouring values, making it more sensitive to local, short-range variation. Values below 1 indicate positive spatial autocorrelation (similar neighbours), near 1 indicate randomness, and above 1 indicate negative autocorrelation. |
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