LOCAL INFLUENCE FOR SPATIAL ANALYSIS OF SOIL PHYSICAL PROPERTIES AND SOYBEAN YIELD USING STUDENT'S <i>t</i>-DISTRIBUTION

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dc.contributor.authorBotinha Assumpcao, Rosangela Aparecida
dc.contributor.authorUribe Opazo, Miguel Angel
dc.contributor.authorGalea, Manuel
dc.date.accessioned2025-01-20T23:59:17Z
dc.date.available2025-01-20T23:59:17Z
dc.date.issued2011
dc.description.abstractThe modeling and estimation of the parameters that define the spatial dependence structure of a regionalized variable by geostatistical methods are fundamental, since these parameters, underlying the kriging of unsampled points, allow the construction of thematic maps. One or more atypical observations in the sample data can affect the estimation of these parameters. Thus, the assessment of the combined influence of these observations by the analysis of Local Influence is essential. The purpose of this paper was to propose local influence analysis methods for the regionalized variable, given that it has n-variate Student's t-distribution, and compare it with the analysis of local influence when the same regionalized variable has n-variate normal distribution. These local influence analysis methods were applied to soil physical properties and soybean yield data of an experiment carried out in a 56.68 ha commercial field in western Parana, Brazil. Results showed that influential values are efficiently determined with n-variate Student's t-distribution.
dc.fuente.origenWOS
dc.identifier.eissn1806-9657
dc.identifier.issn0100-0683
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95289
dc.identifier.wosidWOS:000299438600008
dc.issue.numero6
dc.language.isoen
dc.pagina.final1926
dc.pagina.inicio1917
dc.revistaRevista brasileira de ciencia do solo
dc.rightsacceso restringido
dc.subjectgeostatistics
dc.subjectEM algorithm
dc.subjectspatial variability
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleLOCAL INFLUENCE FOR SPATIAL ANALYSIS OF SOIL PHYSICAL PROPERTIES AND SOYBEAN YIELD USING STUDENT'S <i>t</i>-DISTRIBUTION
dc.typeartículo
dc.volumen35
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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