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Prediction intervals for integrals of Gaussian random fields
被引:6
|作者:
De Oliveira, Victor
[1
]
Kone, Bazoumana
[1
,2
]
机构:
[1] Univ Texas San Antonio, Dept Management Sci & Stat, San Antonio, TX 78249 USA
[2] PPD, Austin, TX 78744 USA
基金:
美国国家卫生研究院;
关键词:
Block average;
Bootstrap calibration;
Change of support problem;
Geostatistics;
Kriging;
Spatial average;
COVARIANCE;
LIMITS;
D O I:
10.1016/j.csda.2014.09.013
中图分类号:
TP39 [计算机的应用];
学科分类号:
081203 ;
0835 ;
摘要:
Methodology is proposed for the construction of prediction intervals for integrals of Gaussian random fields over bounded regions (called block averages in the geostatistical literature) based on observations at a finite set of sampling locations. Two bootstrap calibration algorithms are proposed, termed indirect and direct, aimed at improving upon plug-in prediction intervals in terms of coverage probability. A simulation study is carried out that illustrates the effectiveness of both procedures, and these procedures are applied to estimate block averages of chromium traces in a potentially contaminated region in Switzerland. (C) 2014 Elsevier B.V. All rights reserved.
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页码:37 / 51
页数:15
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