Reduced Order
Reduced-order modeling (ROM) aims to create computationally efficient approximations of complex systems, typically governed by high-dimensional partial differential equations, by reducing the dimensionality of the problem. Current research emphasizes developing data-driven ROMs using machine learning techniques, such as autoencoders, neural networks (including recurrent and convolutional architectures), and Koopman operators, often incorporating physics-based constraints for improved accuracy and interpretability. These advancements are significantly impacting various fields by accelerating simulations, enabling real-time control of complex systems (e.g., soft robots, plasma discharges), and facilitating efficient design exploration in areas like aerospace engineering.
Papers
Active Sampling of Interpolation Points to Identify Dominant Subspaces for Model Reduction
Celine Reddig, Pawan Goyal, Igor Pontes Duff, Peter Benner
Accelerate Neural Subspace-Based Reduced-Order Solver of Deformable Simulation by Lipschitz Optimization
Aoran Lyu, Shixian Zhao, Chuhua Xian, Zhihao Cen, Hongmin Cai, Guoxin Fang
Reduced-Order Neural Operators: Learning Lagrangian Dynamics on Highly Sparse Graphs
Hrishikesh Viswanath, Yue Chang, Julius Berner, Peter Yichen Chen, Aniket Bera
TwinLab: a framework for data-efficient training of non-intrusive reduced-order models for digital twins
Maximilian Kannapinn, Michael Schäfer, Oliver Weeger