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1264Re: GEOSTATS: estimator and estimate

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  • Pierre Goovaerts
    Jun 2, 1999
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      The kriging estimator is a random variable (RV) since
      it is a linear combination of RVs defined at surrounding
      data locations, hence the use of capital letters.
      Z*(u) = sum_i=1^n Z(u_i)

      The observations z(u_i) are viewed as particular
      outcomes (or realizations) of the RV and their linear combination,
      the estimate or estimated value z*(u), is also a paricular
      outcome of the RV at u.

      Pierre
      <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>

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      __|________\/________|__ Dept of Civil & Environmental Engineering
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      On Wed, 2 Jun 1999, Ulrich Leopold wrote:

      > Dear all,
      >
      > I have a short question:
      >
      > What is the difference between a kriging estimator, say Z*(u), and
      > the kriging estimate z*(u).
      >
      > Thanks in advance.
      >
      > Ulrich
      >
      > ><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
      >
      > Ulrich Leopold
      >
      > Department of Soil Science
      > The University of Trier
      >
      > E-mail: leop6101@...
      > phone: 0049-(0)651-140764
      > address: Engelstr.104, 54292 Trier, Germany
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