Kriging coordinates: what does that mean?

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dc.contributor Universitat de Girona. Departament d'Informàtica i Matemàtica Aplicada Tolosana Delgado, Raimon Pawlowsky-Glahn, Vera
dc.contributor.editor Thió i Fernández de Henestrosa, Santiago
dc.contributor.editor Martín Fernández, Josep Antoni 2003-10-16
dc.identifier.citation Tolosana Delgado, R.; Pawlowsky Glahn, V. 'Kriging coordinates: what does that mean?' a CODAWORK’03. Girona: La Universitat, 2003 [consulta: 5 maig 2008]. Necessita Adobe Acrobat. Disponible a Internet a:
dc.identifier.isbn 84-8458-111-X
dc.description.abstract Kriging is an interpolation technique whose optimality criteria are based on normality assumptions either for observed or for transformed data. This is the case of normal, lognormal and multigaussian kriging. When kriging is applied to transformed scores, optimality of obtained estimators becomes a cumbersome concept: back-transformed optimal interpolations in transformed scores are not optimal in the original sample space, and vice-versa. This lack of compatible criteria of optimality induces a variety of problems in both point and block estimates. For instance, lognormal kriging, widely used to interpolate positive variables, has no straightforward way to build consistent and optimal confidence intervals for estimates. These problems are ultimately linked to the assumed space structure of the data support: for instance, positive values, when modelled with lognormal distributions, are assumed to be embedded in the whole real space, with the usual real space structure and Lebesgue measure
dc.description.sponsorship Geologische Vereinigung; Universitat de Barcelona, Equip de Recerca Arqueomètrica; Institut d’Estadística de Catalunya; International Association for Mathematical Geology; Patronat de l’Escola Politècnica Superior de la Universitat de Girona; Fundació privada: Girona, Universitat i Futur.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada
dc.rights Tots els drets reservats
dc.subject Anàlisi multivariable
dc.subject Geologia -- Mètodes estadístics
dc.title Kriging coordinates: what does that mean?
dc.type info:eu-repo/semantics/conferenceObject

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