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Stochastic approximation techniques applied to parameter estimation in a biological model

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2 Author(s)
Renotte, C. ; Service d''Automatique, Faculte Polytechnique de Mons ; Vande Wouwer, A.

Simultaneous perturbation stochastic approximation (SPSA) is a class of optimization algorithms which compute an approximation of the gradient and/or the Hessian of the objective function by varying all the elements of the parameter vector simultaneously and therefore, require only a few objective function evaluations to obtain first or second-order information. Consequently, these algorithms are particularly well suited to problems involving a large number of design parameters. Their potentialities are assessed in the context of nonlinear system identification. To this end, a challenging modelling application is considered, i.e. dynamic modelling of batch animal cell cultures from sets of experimental data. The performance of the optimization algorithms are discussed in terms of efficiency, accuracy and ease of use

Published in:

Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications, 2003. Proceedings of the Second IEEE International Workshop on

Date of Conference:

8-10 Sept. 2003