Chapter

Computational Science – ICCS 2007

Volume 4488 of the series Lecture Notes in Computer Science pp 503-510

Efficient Implementation of an Optimal Interpolator for Large Spatial Data Sets

  • Nargess MemarsadeghiAffiliated withNASA/GSFC, Code 588, Greenbelt, MD, 20771University of Maryland, College Park, MD, 20742
  • , David M. MountAffiliated withUniversity of Maryland, College Park, MD, 20742

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Abstract

Interpolating scattered data points is a problem of wide ranging interest. One of the most popular interpolation methods in geostatistics is ordinary kriging. The price for its statistical optimality is that the estimator is computationally very expensive. We demonstrate the space and time efficiency and accuracy of approximating ordinary kriging through the use of covariance tapering combined with iterative methods.

Keywords

Geostatistics kriging tapering iterative methods