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Comparison of a cokriging method with a Bayesian alternative

✍ Scribed by Weimin Sun

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 191 KB
Volume: 9
Category: Article
ISSN: 1180-4009
DOI: 10.1002/(sici)1099-095x(199807/08)9:4<445::aid-env314>3.0.co;2-g

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✦ Synopsis

In this paper we compare MWRCK, a cokriging method, with LSZ, a Bayesian alternative. We test the methods for using the monthly NO 3 and SO 4 levels observed from 1983 to 1986 at 45 sites over the conterminous United States. Our simulation study suggests the LSZ predictor yields smaller overall mean squared prediction error than the MWRCK method, although these MSPE values are close. Since the LSZ method incorporates model uncertainty, it has an almost correct coverage probability. We ®nd that the MWRCK method yields a low coverage probability.

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