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dc.contributor.authorJuznic Zonta, Zivko
dc.contributor.authorFlotats Ripoll, Xavier
dc.contributor.authorMagrí Aloy, Albert
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Projectes d'Enginyeria
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia
dc.date.accessioned2011-10-21T11:22:12Z
dc.date.available2011-10-21T11:22:12Z
dc.date.created2011
dc.date.issued2011
dc.identifier.citationJuznic, Z.; Flotats, X.; Magrí, A. Model parameter uncertainty estimation based on Bayesian inference for activated sludge model under aerobic conditions: a comparison with a linear theory method. A: IWA Symposium on Systems Analysis and Integrated Assessment. "8th IWA Symposium on Systems Analysis and Integrated Assessment". San Sebastián: Internatinal Water Association (IWA), 2011, p. 428-435.
dc.identifier.urihttp://hdl.handle.net/2117/13610
dc.description.abstractThe purpose of the study is to apply Bayesian inference in order to estimate the uncertainty in model parameters and predictions for environmental models. The analysis was based on a global optimization routine that finds good initial values for an adaptive Markov chains Monte Carlo (MCMC) algorithm that finally computes the posterior parameter distribution. A revised activated sludge model was used in order to perform a comparison between Bayesian and linear theory methods. It was observed that the linear theory method systematically underestimates the confidence intervals of the estimated model parameters because the multivariate normality assumption is violated and practical unidentifiability for some parameters occurs.
dc.format.extent8 p.
dc.language.isoeng
dc.publisherInternatinal Water Association (IWA)
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Estadística aplicada
dc.subjectÀrees temàtiques de la UPC::Desenvolupament humà i sostenible::Desenvolupament humà::Aigua i sanejament
dc.subject.lcshWater -- Purification
dc.subject.lcshBayesian statistical decision
dc.subject.lcshWaste products -- Statistics
dc.subject.lcshMarkov processes
dc.subject.otherActivated sludge models (ASM)
dc.subject.otherBayesian inference
dc.subject.otherGlobal sensitivity analysis
dc.subject.otherMarkov chains Monte Carlo (MCMC)
dc.subject.otherUncertainty analysis
dc.titleModel parameter uncertainty estimation based on Bayesian inference for activated sludge model under aerobic conditions: a comparison with a linear theory method
dc.typeConference lecture
dc.subject.lemacAigües residuals -- Depuració
dc.subject.lemacResidus -- Estadístiques
dc.subject.lemacEstadística bayesiana
dc.subject.lemacMarkov, Processos de
dc.contributor.groupUniversitat Politècnica de Catalunya. GREA - Grup de Recerca d'Enginyeria Agro-Ambiental
dc.rights.accessOpen Access
local.identifier.drac5890297
dc.description.versionPostprint (published version)
local.citation.authorJuznic, Z.; Flotats, X.; Magrí, A.
local.citation.contributorIWA Symposium on Systems Analysis and Integrated Assessment
local.citation.pubplaceSan Sebastián
local.citation.publicationName8th IWA Symposium on Systems Analysis and Integrated Assessment
local.citation.startingPage428
local.citation.endingPage435


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