Romit Maulik
Mathematics and Computer Science Division
Argonne National Laboratory

"Reduced-order modeling of high-dimensional systems using machine learning"

Nov 19, 2021 Schedule:

10:00 to 11:00 AM Eastern Time (US and Canada)

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Meeting # 91481831026

Meeting # 91481831026

Abstract:

In this talk, I will discuss some recent research that builds fast and accurate reduced-order models (ROMs) for various high-dimensional systems. These systems may be steady-state, where the ROM is tasked with making predictions given varying parametric inputs, or they may be dynamical where the ROM must make accurate forecasts in time, given parameters and/or varying initial and boundary conditions. In both endeavors, we will outline the development of customized machine learning strategies, based on deep learning-based compression and forecasting, to dramatically improve accuracy and/or time-to-solution and for extended computational campaigns. Furthermore, in addition to canonical experiments, our algorithms will be demonstrated for real-world applications of strategic importance such as for geophysical forecasting from ship and satellite observation data and wind-turbine wake/urban-flow predictions from meteorological and LIDAR measurements.