• Corpus ID: 214803031

A matrix-free approach to geostatistical filtering

  title={A matrix-free approach to geostatistical filtering},
  author={Mike Pereira and Nicolas Desassis and C{\'e}dric Magneron and Nathan Erik Palmer},
  journal={arXiv: Methodology},
In this paper, we present a novel approach to geostatistical filtering which tackles two challenges encountered when applying this method to complex spatial datasets: modeling the non-stationarity of the data while still being able to work with large datasets. The approach is based on a finite element approximation of Gaussian random fields expressed as an expansion of the eigenfunctions of a Laplace--Beltrami operator defined to account for local anisotropies. The numerical approximation of… 

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