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    Comparing Spatial Predictions

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    Type
    Article
    Authors
    Hering, Amanda S.
    Genton, Marc G. cc
    KAUST Grant Number
    KUS-C1-016-04
    Date
    2011-11
    Permanent link to this record
    http://hdl.handle.net/10754/597807
    
    Metadata
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    Abstract
    Under a general loss function, we develop a hypothesis test to determine whether a significant difference in the spatial predictions produced by two competing models exists on average across the entire spatial domain of interest. The null hypothesis is that of no difference, and a spatial loss differential is created based on the observed data, the two sets of predictions, and the loss function chosen by the researcher. The test assumes only isotropy and short-range spatial dependence of the loss differential but does allow it to be non-Gaussian, non-zero-mean, and spatially correlated. Constant and nonconstant spatial trends in the loss differential are treated in two separate cases. Monte Carlo simulations illustrate the size and power properties of this test, and an example based on daily average wind speeds in Oklahoma is used for illustration. Supplemental results are available online. © 2011 American Statistical Association and the American Society for Qualitys.
    Citation
    Hering AS, Genton MG (2011) Comparing Spatial Predictions. Technometrics 53: 414–425. Available: http://dx.doi.org/10.1198/TECH.2011.10136.
    Sponsors
    This research was partially supported by NSF grants DMS-1007504, CMG-0621118, and Award No. KUS-C1-016-04,made by King Abdullah University of Science and Technology(KAUST). The authors also thank the editor, associate editor,and two anonymous reviewers whose constructive commentshave greatly improved the presentation of the article.
    Publisher
    Informa UK Limited
    Journal
    Technometrics
    DOI
    10.1198/TECH.2011.10136
    ae974a485f413a2113503eed53cd6c53
    10.1198/TECH.2011.10136
    Scopus Count
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