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  • Articles  (1)
  • numerical algorithm  (1)
  • Springer  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Mathematical geology 19 (1987), S. 549-559 
    ISSN: 1573-8868
    Keywords: nonnegative kriging weights ; kriging equations ; nonlinear optimization ; numerical algorithm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Mathematics
    Notes: Abstract Under a constant drift, the linear kriging estimator is considered as a weighted average ofn available sample values. Kriging weights are determined such that the estimator is unbiased and optimal. To meet these requirements, negative kriging weights are sometimes found. Use of negative weights can produce negative block grades, which makes no practical sense. In some applications, all kriging weights may be required to be nonnegative. In this paper, a derivation of a set of nonlinear equations with the nonnegative constraint is presented. A numerical algorithm also is developed for the solution of the new set of kriging equations.
    Type of Medium: Electronic Resource
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