2 papers
math.DG2025
The uniqueness of minimal maps into Cartan-Hadamard manifolds via the squared singular values
Zhiwei Jia, Minghao Li, Ling Yang
In this paper, we give a uniqueness theorem for the Dirichlet problem of minimal maps into general Riemannian manifolds with non-positive sectional curvature, improving Theorem 5.2…
cs.LG2024
Reward Fine-Tuning Two-Step Diffusion Models via Learning Differentiable Latent-Space Surrogate Reward
Zhiwei Jia, Yuesong Nan, Huixi Zhao +1
Recent research has shown that fine-tuning diffusion models (DMs) with arbitrary rewards, including non-differentiable ones, is feasible with reinforcement learning (RL) techniques…