TY - JOUR
T1 - An automated decision support system for aided assessment of variogram models
AU - Barca, Emanuele
AU - Porcu, Emilio
AU - Bruno, Delia
AU - Passarella, Giuseppe
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2017/1/1
Y1 - 2017/1/1
N2 - 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).
AB - 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).
KW - Decision-support system
KW - Extensive cross-validation
KW - Geostatistics
KW - Rank coefficient of spatial correlation
UR - http://www.scopus.com/inward/record.url?scp=84994877079&partnerID=8YFLogxK
U2 - 10.1016/j.envsoft.2016.11.004
DO - 10.1016/j.envsoft.2016.11.004
M3 - Article
AN - SCOPUS:84994877079
SN - 1364-8152
VL - 87
SP - 72
EP - 83
JO - Environmental Modelling and Software
JF - Environmental Modelling and Software
ER -