collaborators

5 papers

cs.CE2026

A Lagrangian Conditional Gaussian Koopman Network for Data Assimilation and Prediction

Zhongrui Wang, Chuanqi Chen, Jin-Long Wu +1

Lagrangian data assimilation aims to recover hidden Eulerian flow fields from sparse, indirect observations of moving tracers. This problem is challenging because tracer trajectori…

cs.LG2025

Active Learning of Model Discrepancy with Bayesian Experimental Design

Huchen Yang, Chuanqi Chen, Jin-Long Wu

Digital twins have been actively explored in many engineering applications, such as manufacturing and autonomous systems. However, model discrepancy is ubiquitous in most digital t…

cs.LG2025

Modeling Partially Observed Nonlinear Dynamical Systems and Efficient Data Assimilation via Discrete-Time Conditional Gaussian Koopman Network

Chuanqi Chen, Zhongrui Wang, Nan Chen +1

A discrete-time conditional Gaussian Koopman network (CGKN) is developed in this work to learn surrogate models that can perform efficient state forecast and data assimilation (DA)…

cs.LG2025

Data-Driven Stochastic Closure Modeling via Conditional Diffusion Model and Neural Operator

Xinghao Dong, Chuanqi Chen, Jin-Long Wu

Closure models are widely used in simulating complex multiscale dynamical systems such as turbulence and the earth system, for which direct numerical simulation that resolves all s…

cs.LG2025

CGKN: A Deep Learning Framework for Modeling Complex Dynamical Systems and Efficient Data Assimilation

Chuanqi Chen, Nan Chen, Yinling Zhang +1

Deep learning is widely used to predict complex dynamical systems in many scientific and engineering areas. However, the black-box nature of these deep learning models presents sig…