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- W4386875688 abstract "This paper proposes a method for uncertainty quantification of an autoencoder-based Koopman operator. The main challenge of using the Koopman operator is to design the basis functions for lifting the state. To this end, this paper builds an autoencoder to automatically search the optimal lifting basis functions with a given loss function. We approximate the Koopman operator in a finite-dimensional space with the autoencoder, while the approximated Koopman has an approximation uncertainty. To resolve the problem, we compute a robust positively invariant set for the approximated Koopman operator to consider the approximation error. Then, the decoder of the autoencoder is analyzed by robustness certification against approximation error using the Lipschitz constant in the reconstruction phase. The forced Van der Pol model is used to show the validity of the proposed method. From the numerical simulation results, we confirmed that the trajectory of the true state stays in the uncertainty set centered by the reconstructed state." @default.
- W4386875688 created "2023-09-20" @default.
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- W4386875688 date "2023-09-17" @default.
- W4386875688 modified "2023-09-27" @default.
- W4386875688 title "Uncertainty Quantification of Autoencoder-based Koopman Operator" @default.
- W4386875688 doi "https://doi.org/10.48550/arxiv.2309.09419" @default.
- W4386875688 hasPublicationYear "2023" @default.
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