השוואת שיטות
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| מדד C המקומי של גרי (Local Geary's C)× | אוטוקורלציה מרחבית× | |
|---|---|---|
| תחום | ניתוח מרחבי | ניתוח מרחבי |
| משפחה | Regression model | Regression model |
| שנת המקור≠ | 1995 | 1950 |
| הוגה השיטה≠ | Luc Anselin | P. A. P. Moran (global measure, 1950); Roy Geary (Geary's C, 1954); Luc Anselin (LISA, 1995) |
| סוג≠ | Local spatial statistic | Spatial statistic / exploratory spatial data analysis |
| מקור מכונן≠ | Anselin, L. (1995). Local indicators of spatial association — LISA. Geographical Analysis, 27(2), 93–115. DOI ↗ | Moran, P. A. P. (1950). Notes on continuous stochastic phenomena. Biometrika, 37(1/2), 17–23. DOI ↗ |
| כינויים | Local Geary, local spatial contiguity ratio, LISA Geary, local c statistic | spatial dependence, geographic autocorrelation, spatial clustering measure, SA |
| קשורות≠ | 6 | 5 |
| תקציר≠ | Local Geary's C is a local indicator of spatial association (LISA) that measures, for each location, how dissimilar its value is from its immediate neighbours. Unlike Local Moran's I, which detects clustering of similar values, Local Geary's C focuses on squared value differences and is especially sensitive to local spatial outliers and local heterogeneity. | Spatial autocorrelation quantifies the degree to which a variable's values at nearby locations resemble each other more (positive autocorrelation) or less (negative autocorrelation) than expected by chance. Global indices such as Moran's I summarise the pattern across the entire study area, while local variants reveal clusters and outliers at the level of individual observations. |
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