Jämför metoder
Granska de valda metoderna sida vid sida; rader som skiljer sig är markerade.
| Global Co-Kriging× | Universell kriging (Kriging med en trend)× | |
|---|---|---|
| Ämnesområde | Rumslig analys | Rumslig analys |
| Familj | Regression model | Regression model |
| Ursprungsår≠ | 1982 | 1969 |
| Upphovsperson≠ | Matheron (geostatistics framework); formalized for multivariate case by Myers (1982) | Georges Matheron |
| Typ≠ | Multivariate geostatistical interpolation | Geostatistical interpolation with spatial trend |
| Ursprungskälla≠ | Myers, D. E. (1982). Matrix formulation of co-kriging. Journal of the International Association for Mathematical Geology, 14(3), 249–257. DOI ↗ | Matheron, G. (1963). Principles of geostatistics. Economic Geology, 58(8), 1246–1266. DOI ↗ |
| Alias | global cokriging, co-kriging, cokriging, multivariate kriging | kriging with a trend, kriging with drift, trend kriging, evrensel kriging |
| Närliggande≠ | 4 | 3 |
| Sammanfattning≠ | Global Co-Kriging is a multivariate geostatistical interpolation method that estimates an unsampled primary variable by exploiting its spatial cross-correlation with one or more secondary variables. Unlike local (moving-window) approaches, it fits a single set of variogram and cross-variogram models to the entire study domain and solves one global cokriging system for each prediction location. | Universal kriging generalizes ordinary kriging to data whose mean varies systematically across space — a spatial trend or 'drift'. It models the mean as a function of the coordinates (or covariates) and krigs the residuals, so it can interpolate variables that drift in a preferred direction, such as temperature falling with latitude or a pollutant gradient, while still returning prediction variances. |
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