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Efficient prediction designs for random fields

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  • Werner G. Müller
  • Luc Pronzato
  • Joao Rendas
  • Helmut Waldl

Abstract

For estimation and predictions of random fields, it is increasingly acknowledged that the kriging variance may be a poor representative of true uncertainty. Experimental designs based on more elaborate criteria that are appropriate for empirical kriging (EK) are then often non‐space‐filling and very costly to determine. In this paper, we investigate the possibility of using a compound criterion inspired by an equivalence theorem type relation to build designs quasi‐optimal for the EK variance when space‐filling designs become unsuitable. Two algorithms are proposed, one relying on stochastic optimization to explicitly identify the Pareto front, whereas the second uses the surrogate criteria as local heuristic to choose the points at which the (costly) true EK variance is effectively computed. We illustrate the performance of the algorithms presented on both a simple simulated example and a real oceanographic dataset. © 2014 The Authors. Applied Stochastic Models in Business and Industry published by John Wiley & Sons, Ltd.

Suggested Citation

  • Werner G. Müller & Luc Pronzato & Joao Rendas & Helmut Waldl, 2015. "Efficient prediction designs for random fields," Applied Stochastic Models in Business and Industry, John Wiley & Sons, vol. 31(2), pages 178-194, March.
  • Handle: RePEc:wly:apsmbi:v:31:y:2015:i:2:p:178-194
    DOI: 10.1002/asmb.2084
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