Statistical tools for simulation practitioners
Statistical tools for simulation practitioners
The simulation metamodel
A nonlinear rainfall-runoff model using neural network technique: example in fractured porous media
Mathematical and Computer Modelling: An International Journal
Computers and Operations Research
A prediction interval-based approach to determine optimal structures of neural network metamodels
Expert Systems with Applications: An International Journal
Constructing prediction intervals for neural network metamodels of complex systems
IJCNN'09 Proceedings of the 2009 international joint conference on Neural Networks
Developing optimal neural network metamodels based on prediction intervals
IJCNN'09 Proceedings of the 2009 international joint conference on Neural Networks
Computers and Industrial Engineering
Cost estimation of plastic injection molding parts through integration of PSO and BP neural network
Expert Systems with Applications: An International Journal
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The estimation of the extent of a polluted zone after an accidental spill occurred in road transport is essential to assess the risk of water resources contamination and to design remediation plans. This paper presents a metamodel based on artificial neural networks (ANN) for estimating the depth of the contaminated zone and the volume of pollutant infiltration in the soil in a two-layer soil (a silty cover layer protecting a chalky aquifer) after a pollutant discharge at the soil surface. The ANN database is generated using USEPA NAPL-Simulator. For each case the extent of contamination is computed as a function of cover layer permeability and thickness, water table depth and soil surface-pollutant contact time. Different feedforward artificial neural networks with error backpropagation (BPNN) are trained and tested using subsets of the database, and validated on yet another subset. Their performance is compared with a metamodelling method using multilinear regression approximation. The proposed ANN metamodel is used to assess the risk for a DNAPL pollution to reach the groundwater resource underneath the road axis of a highway project in the north of France.