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| Analisi dei punti caldi (Getis-Ord Gi*)× | Indicatori Locali di Associazione Spaziale (LISA)× | |
|---|---|---|
| Campo | Analisi spaziale | Analisi spaziale |
| Famiglia | Regression model | Regression model |
| Anno di origine≠ | 1992 | 1995 |
| Ideatore≠ | Arthur Getis and J. Keith Ord | Luc Anselin |
| Tipo | Local spatial statistic | Local spatial statistic |
| Fonte seminale≠ | Getis, A., & Ord, J. K. (1992). The analysis of spatial association by use of distance statistics. Geographical Analysis, 24(3), 189-206. DOI ↗ | Anselin, L. (1995). Local Indicators of Spatial Association — LISA. Geographical Analysis, 27(2), 93–115. DOI ↗ |
| Alias | Getis-Ord Gi* statistic, spatial hot spot detection, cluster and outlier analysis, HSA | LISA, local spatial autocorrelation statistics, local Moran's I, Anselin LISA |
| Correlati≠ | 5 | 6 |
| Sintesi≠ | 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. | LISA, introduced by Luc Anselin in 1995, decomposes a global spatial autocorrelation index into a location-specific statistic for every observation. It identifies where statistically significant spatial clusters and outliers occur on a map, enabling researchers to move beyond a single global summary and pinpoint the geographic sources of spatial dependence. |
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