Computational benefits using artificial intelligent methodologies for the solution of an environmental design problem: Saltwater intrusion

Papadopoulou, MP; Nikolos, IK; Karatzas, GP

dc.contributor.author	Papadopoulou, MP	en
dc.contributor.author	Nikolos, IK	en
dc.contributor.author	Karatzas, GP	en
dc.date.accessioned	2014-03-01T01:33:02Z
dc.date.available	2014-03-01T01:33:02Z
dc.date.issued	2010	en
dc.identifier.issn	0273-1223	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20286
dc.subject	Artificial intelligence	en
dc.subject	Computational cost	en
dc.subject	Design	en
dc.subject	Differential evolution	en
dc.subject	Groundwater resources management	en
dc.subject	Neural networks	en
dc.subject	Saltwater intrusion	en
dc.subject	Surrogate model	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Environmental Sciences	en
dc.subject.classification	Water Resources	en
dc.subject.other	Artificial intelligent	en
dc.subject.other	Artificial Neural Network	en
dc.subject.other	Artificial neural networks	en
dc.subject.other	Coastal aquifers	en
dc.subject.other	Computation time	en
dc.subject.other	Computational costs	en
dc.subject.other	Daily water demand	en
dc.subject.other	DE algorithms	en
dc.subject.other	De-optimization	en
dc.subject.other	Differential Evolution	en
dc.subject.other	Differential evolution algorithms	en
dc.subject.other	Environmental design	en
dc.subject.other	Groundwater resources management	en
dc.subject.other	Local approximation	en
dc.subject.other	Numerical simulation models	en
dc.subject.other	Optimization procedures	en
dc.subject.other	Optimization scheme	en
dc.subject.other	Physical systems	en
dc.subject.other	Radial basis functions	en
dc.subject.other	Seawater intrusion	en
dc.subject.other	Simplex methods	en
dc.subject.other	Subsurface waters	en
dc.subject.other	Surrogate model	en
dc.subject.other	Water resources management	en
dc.subject.other	Approximation algorithms	en
dc.subject.other	Aquifers	en
dc.subject.other	Biology	en
dc.subject.other	Computer simulation	en
dc.subject.other	Convergence of numerical methods	en
dc.subject.other	Design	en
dc.subject.other	Differential equations	en
dc.subject.other	Differentiation (calculus)	en
dc.subject.other	Evolutionary algorithms	en
dc.subject.other	Groundwater geochemistry	en
dc.subject.other	Groundwater resources	en
dc.subject.other	Network management	en
dc.subject.other	Optimization	en
dc.subject.other	Radial basis function networks	en
dc.subject.other	Salt water intrusion	en
dc.subject.other	Seawater	en
dc.subject.other	Security of data	en
dc.subject.other	Water pollution	en
dc.subject.other	Water quality	en
dc.subject.other	Neural networks	en
dc.subject.other	sea water	en
dc.subject.other	surface water	en
dc.subject.other	artificial intelligence	en
dc.subject.other	artificial neural network	en
dc.subject.other	groundwater resource	en
dc.subject.other	optimization	en
dc.subject.other	saline intrusion	en
dc.subject.other	subsurface flow	en
dc.subject.other	surrogate method	en
dc.subject.other	water demand	en
dc.subject.other	water flow	en
dc.subject.other	water quality	en
dc.subject.other	algorithm	en
dc.subject.other	aquifer	en
dc.subject.other	article	en
dc.subject.other	artificial intelligence	en
dc.subject.other	artificial neural network	en
dc.subject.other	environmental monitoring	en
dc.subject.other	finite element analysis	en
dc.subject.other	methodology	en
dc.subject.other	process model	en
dc.subject.other	radial basis function artificial neural network	en
dc.subject.other	seashore	en
dc.subject.other	simulation	en
dc.subject.other	water management	en
dc.subject.other	water quality	en
dc.subject.other	water supply	en
dc.subject.other	Algorithms	en
dc.subject.other	Artificial Intelligence	en
dc.subject.other	Geography	en
dc.subject.other	Greece	en
dc.subject.other	Models, Chemical	en
dc.subject.other	Neural Networks (Computer)	en
dc.subject.other	Seawater	en
dc.subject.other	Water Supply	en
dc.subject.other	Crete	en
dc.subject.other	Greece	en
dc.subject.other	Iraklion [Crete]	en
dc.title	Computational benefits using artificial intelligent methodologies for the solution of an environmental design problem: Saltwater intrusion	en
heal.type	journalArticle	en
heal.identifier.primary	10.2166/wst.2010.442	en
heal.identifier.secondary	http://dx.doi.org/10.2166/wst.2010.442	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Artificial Neural Networks (ANNs) comprise a powerful tool to approximate the complicated behavior and response of physical systems allowing considerable reduction in computation time during time-consuming optimization runs. In this work, a Radial Basis Function Artificial Neural Network (RBFN) is combined with a Differential Evolution (DE) algorithm to solve a water resources management problem, using an optimization procedure. The objective of the optimization scheme is to cover the daily water demand on the coastal aquifer east of the city of Heraklion, Crete, without reducing the subsurface water quality due to seawater intrusion. The RBFN is utilized as an on-line surrogate model to approximate the behavior of the aquifer and to replace some of the costly evaluations of an accurate numerical simulation model which solves the subsurface water flow differential equations. The RBFN is used as a local approximation model in such a way as to maintain the robustness of the DE algorithm. The results of this procedure are compared to the corresponding results obtained by using the Simplex method and by using the DE procedure without the surrogate model. As it is demonstrated, the use of the surrogate model accelerates the convergence of the DE optimization procedure and additionally provides a better solution at the same number of exact evaluations, compared to the original DE algorithm. © IWA Publishing 2010.	en
heal.publisher	I W A PUBLISHING	en
heal.journalName	Water Science and Technology	en
dc.identifier.doi	10.2166/wst.2010.442	en
dc.identifier.isi	ISI:000283398100004	en
dc.identifier.volume	62	en
dc.identifier.issue	7	en
dc.identifier.spage	1479	en
dc.identifier.epage	1490	en