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| Paikallinen spatiaalinen autokorrelaatio× | Hot Spot Analysis (Getis-Ord Gi*)× | |
|---|---|---|
| Tieteenala | Spatiaalianalyysi | Spatiaalianalyysi |
| Menetelmäperhe | Regression model | Regression model |
| Syntyvuosi≠ | 1995 | 1992 |
| Kehittäjä≠ | Luc Anselin | Arthur Getis and J. Keith Ord |
| Tyyppi≠ | Spatial association analysis | Local spatial statistic |
| Alkuperäislähde≠ | Anselin, L. (1995). Local indicators of spatial association — LISA. Geographical Analysis, 27(2), 93–115. DOI ↗ | Getis, A., & Ord, J. K. (1992). The analysis of spatial association by use of distance statistics. Geographical Analysis, 24(3), 189-206. DOI ↗ |
| Rinnakkaisnimet | local spatial association, local SA, LISA methods, local spatial clustering | Getis-Ord Gi* statistic, spatial hot spot detection, cluster and outlier analysis, HSA |
| Liittyvät≠ | 6 | 5 |
| Tiivistelmä≠ | Local Spatial Autocorrelation methods decompose global spatial clustering into location-specific statistics, revealing where in a study area significant clustering or dispersion occurs. Each observation receives its own association score and significance value, enabling the detection of spatial hot spots, cold spots, and spatial outliers rather than reporting a single summary statistic. | 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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