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| Global Moran's I× | Τοπικοί Δείκτες Χωρικής Συσχέτισης (LISA)× | |
|---|---|---|
| Πεδίο | Χωρική Ανάλυση | Χωρική Ανάλυση |
| Οικογένεια | Regression model | Regression model |
| Έτος προέλευσης≠ | 1950 | 1995 |
| Δημιουργός≠ | Patrick Alfred Pierce Moran | Luc Anselin |
| Τύπος≠ | Global spatial autocorrelation test / index | Local spatial statistic |
| Θεμελιώδης πηγή≠ | Moran, P. A. P. (1950). Notes on continuous stochastic phenomena. Biometrika, 37(1/2), 17–23. DOI ↗ | Anselin, L. (1995). Local Indicators of Spatial Association — LISA. Geographical Analysis, 27(2), 93–115. DOI ↗ |
| Εναλλακτικές ονομασίες | Moran's I, global spatial autocorrelation index, Moran index, GMI | LISA, local spatial autocorrelation statistics, local Moran's I, Anselin LISA |
| Συναφείς | 6 | 6 |
| Σύνοψη≠ | Global Moran's I is the most widely used single-number summary of spatial autocorrelation across an entire study area. It compares the attribute value at each location with values at neighbouring locations using a spatial weights matrix, and returns a statistic ranging from −1 (perfect dispersion) through 0 (spatial randomness) to +1 (perfect clustering). A significance test determines whether the observed pattern is stronger than random chance. | 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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