手法を比較

	グローバルユニバーサルクリーニング	Ordinary Kriging
分野	空間分析	空間分析
系統	Regression model	Regression model
提唱年	1969	1963
提唱者	Georges Matheron	Georges Matheron (formalising D.G. Krige's empirical work)
種類	Geostatistical interpolation	Geostatistical interpolation
原典	Journel, A. G., & Huijbregts, C. J. (1978). Mining Geostatistics. Academic Press, London. ISBN: 978-0123910608	Matheron, G. (1963). Principles of geostatistics. Economic Geology, 58(8), 1246-1266.
別名	universal kriging (global), global UK, kriging with external drift (global), global trend kriging	OK, kriging interpolation, geostatistical interpolation, BLUE spatial predictor
関連	4	4
概要	Global Universal Kriging is a geostatistical interpolation method that models a spatially varying trend (drift) as a deterministic function of coordinates and uses the entire dataset to fit both the trend coefficients and the residual variogram simultaneously. It produces optimal linear unbiased predictions together with pointwise estimation uncertainty, accounting for a large-scale spatial gradient across the full study region.	Ordinary Kriging (OK) is the standard geostatistical method for interpolating a continuous spatial variable at unsampled locations. It derives optimal, unbiased weights from the spatial covariance structure of the data, making it the Best Linear Unbiased Predictor (BLUP) under stationarity assumptions. Unlike simpler distance-based methods, it also provides a prediction uncertainty (kriging variance) at every interpolated point.