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Stein hypothesis and screening effect for covariances with compact support
Indexado
WoS WOS:000587719400001
Scopus SCOPUS_ID:85090740207
DOI 10.1214/20-EJS1719
Año 2020
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



In spatial statistics, the screening effect historically refers to the situation when the observations located far from the predictand receive a small (ideally, zero) kriging weight. Several factors play a crucial role in this phenomenon: among them, the spatial design, the dimension of the spatial domain where the observations are defined, the mean-square properties of the underlying random field and its covariance function or, equivalently, its spectral density. The tour de force by Michael L. Stein provides a formal definition of the screening effect and puts emphasis on the Matérn covariance function, advocated as a good covariance function to yield such an effect. Yet, it is often recommended not to use covariance functions with a compact support. This paper shows that some classes of covariance functions being compactly supported allow for a screening effect according to Stein’s definition, in both regular and irregular settings of the spatial design. Further, numerical experiments suggest that the screening effect under a class of compactly supported covariance functions is even stronger than the screening effect under a Matérn model.

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Disciplinas de Investigación



WOS
Statistics & Probability
Scopus
Sin Disciplinas
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Porcu, Emilio Hombre Trinity College Dublin - Irlanda
Trinity Coll Dublin - Irlanda
2 Zastavnyi, Viktor Hombre Vasyl' Stus Donetsk National University - Ucrania
Donetsk Natl Univ - Ucrania
Vasyl‘ Stus Donetsk National University - Ucrania
3 Bevilacqua, Moreno Hombre Universidad de Valparaíso - Chile
4 Emery, Xavier M. Hombre Advanced Mining Technology Center - Chile
Universidad de Chile - Chile
Centro Avanzado de Tecnologia para la Mineria - Chile

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Financiamiento



Fuente
Fondo Nacional de Desarrollo Científico y Tecnológico
Comisión Nacional de Investigación Científica y Tecnológica
Chilean Ministry of Education
Ministerio de Economía, Fomento y Turismo, Chile
Comisión Nacional de Investigación Científica y Tecnológica
Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica
Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica
Ministry of Economy, Development, and Tourism
Millenium Nucleus Center
National Agency for Research and Development
National Agency for Research and Development of Chile
Millennium Science Initiative of the Chilean Ministry of Economy, Development, and Tourism, through grant "Millenium Nucleus Center for the Discovery of Structures in Complex Data"
grant Fondecyt from Chilean Ministry of Education
Agenția Națională pentru Cercetare și Dezvoltare

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Agradecimientos



Agradecimiento
The authors are grateful to the Associate Editor and to an anonymous reviewer for their constructive comments and acknowledge the support of the Millennium Science Initiative of the Chilean Ministry of Economy, Development, and Tourism, through grant “Millenium Nucleus Center for the Discovery of Structures in Complex Data” (Emilio Porcu and Moreno Bevilacqua), of the National Agency for Research and Development of Chile, through grant CONICYT PIA AFB180004 (Xavier Emery) and grant Fondecyt number 1200068 from Chilean Ministry of Education (Moreno Bevilacqua).
The authors are grateful to the Associate Editor and to an anonymous reviewer for their constructive comments and acknowledge the support of the Millennium Science Initiative of the Chilean Ministry of Economy, Development, and Tourism, through grant "Millenium Nucleus Center for the Discovery of Structures in Complex Data" (Emilio Porcu and Moreno Bevilacqua), of the National Agency for Research and Development of Chile, through grant CONICYT PIA AFB180004 (Xavier Emery) and grant Fondecyt number 1200068 from Chilean Ministry of Education (Moreno Bevilacqua).

Muestra la fuente de financiamiento declarada en la publicación.