手法を比較

	共同クルギング：多変量地球統計学的手法による補間	Ordinary Kriging
分野	空間分析	空間分析
系統	Regression model	Regression model
提唱年	1965-1978	1963
提唱者	Matheron, G.; extended by Journel & Huijbregts	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: 978-0123910561	Matheron, G. (1963). Principles of geostatistics. Economic Geology, 58(8), 1246-1266.
別名	cokriging, co-regionalization kriging, multivariate kriging, CK	OK, kriging interpolation, geostatistical interpolation, BLUE spatial predictor
関連	5	4
概要	Co-kriging is a geostatistical interpolation technique that predicts the spatial distribution of a primary variable by leveraging its spatial cross-correlation with one or more secondary (co-) variables. It extends ordinary kriging to multivariate settings, yielding more accurate predictions when the secondary variable is more densely sampled or spatially correlated with the primary variable of interest.	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.