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- W3210000009 abstract "Machine learning approaches have been widely used for discovering the underlying physics of dynamical systems from measured data. Existing approaches, however, still lack robustness, especially when the measured data contain a large level of noise. The lack of robustness is mainly attributed to the insufficient representativeness of used features. As a result, the intrinsic mechanism governing the observed system cannot be accurately identified. In this study, we use an efficient topological descriptor for complex data, i.e., the Euler characteristics (ECs), as features to characterize the spatiotemporal data collected from dynamical systems and discover the underlying physics. Unsupervised manifold learning and supervised classification results show that EC can be used to efficiently distinguish systems with different while similar governing models. We also demonstrate that the machine learning approaches using EC can improve the confidence level of sparse regression methods of physics discovery." @default.
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- W3210000009 date "2022-07-01" @default.
- W3210000009 modified "2023-10-18" @default.
- W3210000009 title "Robust physics discovery via supervised and unsupervised pattern recognition using the Euler Characteristic" @default.
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- W3210000009 doi "https://doi.org/10.1016/j.cma.2022.115110" @default.
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