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Statistical inverse identification for nonlinear train dynamics using a surrogate model in a Bayesian framework
Abstract : This paper presents a Bayesian calibration method for a simulation-based model with stochastic functional input and output. The originality of the method lies in an adaptation involving the representation of the likelihood function by a Gaussian process surrogate model, to cope with the high computational cost of the simulation, while avoiding the surrogate modeling of the functional output. The adaptation focuses on taking into account the uncertainty introduced by the use of a surrogate model when estimating the parameters posterior probability distribution by MCMC. To this end, trajectories of the random surrogate model of the likelihood function are drawn and injected in the MCMC algorithm. An application on a train suspension monitoring case is presented.
Cited literature [28 references]
https://hal-upec-upem.archives-ouvertes.fr/hal-02175507
Contributor : Christian Soize Connect in order to contact the contributor
Submitted on : Friday, July 5, 2019 - 5:58:08 PM
Last modification on : Wednesday, October 27, 2021 - 5:35:54 AM
Contributor : Christian Soize Connect in order to contact the contributor
Submitted on : Friday, July 5, 2019 - 5:58:08 PM
Last modification on : Wednesday, October 27, 2021 - 5:35:54 AM
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