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An automated decision support system for aided assessment of variogram models

Lookup NU author(s): Professor Emilio Porcu

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Abstract

In the present paper, an extensive cross-validation procedure, based on the analysis of numerical indices and graphical tools, is described and discussed. The procedure has been implemented in a software application designed to support practitioners in the variogram model assessment. It provides an extensive report, which summarizes a large post-processing stage and suggests how to interpret the performed analysis to rate the model to be validated. Besides classical accuracy indices, two new integrated tools based on the variogram of residuals are introduced, which take the spatial nature of the dataset into account. Finally, inspecting the summary report, the user can decide whether the considered model is satisfactory for his/her goals or it needs to be improved. Finally, a case study is presented related to the variogram assessment of groundwater level measured in a porous shallow aquifer of the Apulia Region (South-Italy).

Publication metadata

Author(s): Barca E, Porcu E, Bruno D, Passarella G

Publication type: Article

Publication status: Published

Journal: Environmental Modelling & Software

Year: 2017

Volume: 87

Pages: 72-83

Print publication date: 01/01/2017

Online publication date: 11/11/2016

Acceptance date: 04/11/2016

ISSN (print): 1364-8152

ISSN (electronic): 1873-6726

Publisher: Pergamon Press

URL: https://doi.org/10.1016/j.envsoft.2016.11.004

DOI: 10.1016/j.envsoft.2016.11.004

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