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stat.ML2026
AECSF: Adaptive Ensemble Conditional Score Filtering for High-Dimensional Nonlinear Data Assimilation
Yangwen Zhang, Shiwei Ni, Xiaoping Zhang +2
Bayesian state estimation for high-dimensional nonlinear dynamical systems entails a fundamental tension between statistical fidelity and computational tractability, as particle we…
stat.ML2026
FREESIA: Covariance-Aware Posterior Transport for Expressive and Scalable Data Assimilation
Shiwei Ni, Yangwen Zhang, Hang Qi +2
Data assimilation aims to infer the state of complex dynamical systems based on observational data. However, accurate inference of the multimodal posteriors induced by nonlinear or…