Automatic tuning via Kriging-based optimization of methods for fault detection and isolation

Julien Marzat 1, 2, 3 Eric Walter 2 Hélène Piet-Lahanier 1 Frédéric Damongeot 1
1 Chatillon - ONERA - The French Aerospace Lab
2 L2S - Laboratoire des signaux et systèmes
3 GdR MASCOT-NUM - Méthodes d'Analyse Stochastique des Codes et Traitements Numériques
Abstract : All the methods for Fault Detection and Isolation (FDI) involve internal parameters, often called hyperparameters, that have to be carefully tuned. Most often, tuning is ad hoc and this makes it difficult to ensure that any comparison between methods is unbiased. We propose to consider the evaluation of the performance of a method with respect to its hyperparameters as a computer experiment, and to achieve tuning via global optimization based on Kriging and Expected Improvement. This approach is applied to several residual-evaluation (or change-detection) algorithms on classical test-cases. Simulation results show the interest, practicability and performance of this methodology, which should facilitate the automatic tuning of the hyperparameters of a method and allow a fair comparison of a collection of methods on a given set of test-cases. The computational cost turns out to be much lower than the one obtained with other general-purpose optimization methods such as genetic algorithms.
Keywords : Hyperparameter method adjustment parameter tuning residual evaluation change detection fault detection and isolation efficient global optimization Kriging
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Communication dans un congrès
IEEE Conference on Control and Fault-Tolerant Systems, SysTol'10, Oct 2010, Nice, France. 6 p., 2010
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Julien Marzat, Eric Walter, Hélène Piet-Lahanier, Frédéric Damongeot. Automatic tuning via Kriging-based optimization of methods for fault detection and isolation. IEEE Conference on Control and Fault-Tolerant Systems, SysTol'10, Oct 2010, Nice, France. 6 p., 2010. 〈hal-00520808〉

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