ACMS Applied Math Seminar: Jian-Xun Wang

Thu Nov 29, 2018 3:30PM - 4:30PM • Calendars: Applied Math Seminar

Jian-Xun Wang
University of Notre Dame
 

3:30 PM
154 Hurley Hall

 

"Data-enabled Computational Modeling"

The increasing availability of data accumulated from high-fidelity simulations and laboratory/field observations, and recent advances in machine learning and data assimilation techniques open up new possibilities to develop date-enabled computational models of various physical systems. Due to unique challenges in developing data-driven modeling for physical applications (e.g., “small” data in parameter space, rigorousness requirement), it is very important to efficiently leverage both data and known physical knowledge/constraints. In this talk, several applications of data-enabled computational physics are introduced, with special focus on the problems, where only “small data” are available. Specifically, derivative-free inversion techniques will be discussed in detail and improvements of convergence of Kalman inversion techniques will be presented. Moreover, how to add soft constraints into Bayesian inversion will be discussed.

 


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