Results 131 to 140 of about 1,524 (177)

Universal Kriging

2019
This chapter discusses universal kriging, the kriging of a random function Z(x) which is not intrinsic and exhibits an expectation E [Z(x)] = m(x) variable over the space. For the function m(x), called the drift of Z(x), a model has to be chosen, usually polynomial of degree 1, 2, or 3.
Guojun Gan, Emiliano A. Valdez
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Disjunctive kriging, universal kriging, or no kriging: Small sample results with simulated fields

Mathematical Geology, 1986
This paper provides a comparison between linear (universal) and nonlinear (disjunctive) kriging estimators when they are computed from small samples chosen randomly on simulated stationary and nonstationary fields. Point estimation results are reported.
Carlos E. Puente, Rafael L. Bras
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Universal kriging with training images

Spatial Statistics, 2015
Abstract In the past decade, the training image (TI) has received considerable attention as a source for modeling spatial continuity in geostatistics. In this paper, the use of TIs in the context of kriging is investigated, specifically universal kriging (UK).
Lewis Li, Thomas Romary, Jef Caers
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Multi-event universal kriging (MEUK)

Advances in Water Resources, 2016
Multi-event universal kriging (MEUK) is a method of interpolation that creates a series of maps, each corresponding to a specific sampling “event”, which exhibit spatial relationships that persist over time. MEUK is computed using minimum-variance unbiased linear prediction from data obtained via a sequence of events.
Matthew J. Tonkin, Jonathan Kennel, William Huber, John M. Lambie   +3 more
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Universal Kriging and Cokriging as a Regression Procedure

Biometrics, 1991
Prediction of a property on the basis of a set of point measurements in a region is required if a map of this property for the region is to be made. Of the spatial interpolation and prediction techniques, kriging is optimal among all linear procedures, as it is unbiased and has minimal variance of the prediction error. In cokriging, which has this same
Stein, A., Corsten, L.C.A.
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Regularized kriging as a generalization of simple, universal, and bayesian kriging

Stochastic Environmental Research and Risk Assessment, 2005
In this article the properties of regularized kriging (RK) are studied. RK is obtained as a result of relaxing the universal kriging (UK) non-bias condition by using the support vectors methodology. More specifically, we demonstrate how RK is a continuum of solutions in function of the regularizing parameter, which includes as particular and extreme ...
J. M. Matías, W. González-Manteiga
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Automatic Kriging And Contouring In The Presence Of Trends (Universal Kriging Made Simple)

Journal of Canadian Petroleum Technology, 1978
Abstract The main purpose of this paper is to present a new automatic interpolation and contouring technique which automatically recognizes the spatial structure of the dam to be contoured even when, trends are present and data are not regularly spaced.
Michael W.D. Davis, Michel David
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The Bayesian bridge between simple and universal kriging

Mathematical Geology, 1989
Kriging techniques are suited well for evaluation of continuous, spatial phenomena. Bayesian statistics are characterized by using prior qualified guesses on the model parameters. By merging kriging techniques and Bayesian theory, prior guesses may be used in a spatial setting. Partial knowledge of model parameters defines a continuum of models between
Omre, Henning, Halvorsen, Kjetil B.
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Measuring Constituency Ideology Using Bayesian Universal Kriging

State Politics & Policy Quarterly, 2021
AbstractIn this article, we develop and make available measures of public ideology in 2010 for the 50 American states, 435 congressional districts, and state legislative districts. We do this using the geospatial statistical technique of Bayesian universal kriging, which uses the locations of survey respondents, as well as population covariate values ...
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Universal Kriging for Loran ASF Map Generation

IEEE Transactions on Aerospace and Electronic Systems, 2019
After a series of intentional Global Positioning System (GPS) jamming attacks impacted a large area of South Korea, the Ministry of Oceans and Fisheries of South Korea considers long-range navigation (Loran) and enhanced Loran (eLoran) as a maritime backup navigation system.
Pyo-Woong Son, Joon Hyo Rhee, Jaehui Hwang, Jiwon Seo   +3 more
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