Author

Cheng Yuan

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Preprint Sep 2026

Structure-preserving upwind Lagrange multiplier schemes for solid-state dewetting with a logarithmic Flory--Huggins potential

Phase-field simulations of solid-state dewetting based on polynomial potentials may exhibit spurious bulk-diffusion coarsening, inconsistent with the surface-diffusion-dominated physics. To address this issue, we formulate a degenerate Cahn--Hilliard model with the logarithmic Flory--Huggins potential and dynamic conta...

Qiong-Ao Huang, Ying-Wei Wang, Cheng Yuan · 0 citations

#machine learning Preprint Sep 2026

Deep Weighted Bellman Residual Minimization for $Q^*$ Estimation

Off-policy evaluation is a foundational component of offline reinforcement learning, aiming to assess and optimize policy performance using pre-collected datasets. However, such datasets often suffer from pronounced challenges, including distribution shift, $Q$-value overestimation, and low sample utilization efficienc...

Li-Can Kang, Jerry Zhijian Yang, Cheng Yuan et al. · 0 citations