Konferensartikel

First- and second-order parameter sensitivities of a metabolically and isotopically non-stationary biochemical network model

Ralf Hannemann-Tamás
AVT, RWTH Aachen, Germany/MTA SZTAKI, Budapest, Hungary

Jana Tillack
IBG-1, Forschungszentrum Jülich, Germany/JARA - High-Performance Computing

Moritz Schmitz
AVT, RWTH Aachen, Germany

Michael Förster
STCE, RWTH Aachen, Germany

Jutta Wyes
AVT, RWTH Aachen, Germany

Katharina Nöh
IBG-1, Forschungszentrum Jülich, Germany/JARA - High-Performance Computing

Eric von Lieres
IBG-1, Forschungszentrum Jülich, Germany//JARA - High-Performance Computing

Uwe Naumann
STCE, RWTH Aachen, Germany

Wolfgang Wiechert
IBG-1, Forschungszentrum Jülich, Germany/JARA - High-Performance Computing

Wolfgang Marquardt
AVT, RWTH Aachen, Germany

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp12076641

Ingår i: Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany

Linköping Electronic Conference Proceedings 76:65, s. 641-648

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Publicerad: 2012-11-19

ISBN: 978-91-7519-826-2

ISSN: 1650-3686 (tryckt), 1650-3740 (online)

Abstract

The Jülich-Aachen Dynamic optimization Environment (JADE) is employed to compute first- and second-order parameter sensitivities of a metabolically and isotopically non-stationary biochemical network model. Based on a Modelica representation of the model; code generation; algorithmic differentiation and first- and second-order adjoint sensitivity analysis are employed to compute the gradient and the Hessian of a parameter estimation objective function. In particular; we use composite adjoints; an extension of the classical adjoint sensitivity analysis; and a numerical integrator based a modification of second-order discrete adjoints of the extrapolated linearly-implicit Euler method. Therewith; the 116-by-116-Hessian of the objective function with respect to 116 model parameters can be computed for computational costs equivalent to only less than 18 objective function evaluations; while the computation of the same Hessian by means of the cheapest finite-difference formula would require 6845 objective function evaluations.

Nyckelord

biochemical network model; parameter sensitivities; automatic differentiation

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