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. 2023 Apr 27;226(8):jeb244983. doi: 10.1242/jeb.244983

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© 2023. Published by The Company of Biologists Ltd

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.

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Fig. 2. — Dimensionless surface pressure (C_p) profiles reconstructed from the velocity data using the PINN and Queen 2.0. Profiles were reconstructed at different (A,B) spatial and (C,D) temporal resolutions: 0.02 (red), 0.06 (blue) and 0.1 (green) for two different times. (A–D) Insets show the fish body position at the given time step. (E,F) The relative global root mean square error in the surface pressure prediction obtained by both methods as a function of the (E) spatial and (F) temporal resolution of the particle image velocimetry (PIV) data. In all panels, L refers to the fish body length and T refers to the tail-beat period.