Author

Anthony Gruber

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Preprint Sep 2026

Learning Long-Term Stable Operator Inference Reduced-Order Models of Fluid Flows through Online Spatial Filtering

This paper introduces an online evolve--filter--relax (EFR) strategy for long-term stability of Operator Inference (OpInf) reduced-order models (ROMs) of complex fluid flow simulations that uses spatial filtering inspired from large eddy simulation to significantly improve long-term stability and predictive performance...

Ian Moore, Ping-Hsuan Tsai, Anthony Gruber et al. · 1 citation

Adaptive Hybrid Modeling via Schwarz Alternating Coupling and Operator Inference Reduced Order Models

A novel domain decomposition-based approach for creating adaptive hybrid models with the help of the Schwarz alternating method and some recent extensions of SAM are presented to enable the overlapping and non-overlapping coupling of non-intrusive polynomial and neural network-(NN-)based Operator Inference (OpInf) ROMs...

Irina Tezaur, Eric J. Parish, Anthony Gruber et al. · 0 citations

#artificial intelligence Preprint Sep 2026

Adaptive hybrid coupling with operator inference, the overlapping Schwarz alternating method and reinforcement learning

This work introduces a reinforcement learning (RL)-based approach for online adaptation of FOM-ROM models coupled via the overlapping Schwarz alternating method (O-SAM), an iterative domain decomposition method that solves subdomain-local problems while exchanging solution information through transmission boundary cond...

Trishit Mondal, Irina Tezaur, Anthony Gruber · 0 citations