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- W4309432818 abstract "Upcoming technologies like digital twins, autonomous, and artificial intelligent systems involving safety-critical applications require models which are accurate, interpretable, computationally efficient, and generalizable. Unfortunately, the two most commonly used modeling approaches, physics-based modeling (PBM) and data-driven modeling (DDM) fail to satisfy all these requirements. In the current work, we demonstrate how a hybrid approach combining the best of PBM and DDM can result in models which can outperform them both. We do so by combining partial differential equations based on first principles describing partially known physics with a black box DDM, in this case, a deep neural network model compensating for the unknown physics. First, we present a mathematical argument for why this approach should work and then apply the hybrid approach to model two dimensional heat diffusion problem with an unknown source term. The result demonstrates the method's superior performance in terms of accuracy, and generalizability. Additionally, it is shown how the DDM part can be interpreted within the hybrid framework to make the overall approach reliable." @default.
- W4309432818 created "2022-11-27" @default.
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- W4309432818 date "2022-06-07" @default.
- W4309432818 modified "2023-09-28" @default.
- W4309432818 title "Combining physics-based and data-driven techniques for reliable hybrid analysis and modeling using the corrective source term approach" @default.
- W4309432818 doi "https://doi.org/10.48550/arxiv.2206.03451" @default.
- W4309432818 hasPublicationYear "2022" @default.
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