3 papers
cs.RO2026
VLA Models Are More Generalizable Than You Think: Revisiting Physical and Spatial Modeling
Weiqi Li, Quande Zhang, Ruifeng Zhai +2
Vision-language-action (VLA) models achieve strong in-distribution performance but degrade sharply under novel camera viewpoints and visual perturbations. We show that this brittle…
cs.CV2025
ACD: Direct Conditional Control for Video Diffusion Models via Attention Supervision
Weiqi Li, Zehao Zhang, Liang Lin +1
Controllability is a fundamental requirement in video synthesis, where accurate alignment with conditioning signals is essential. Existing classifier-free guidance methods typicall…
cs.CV2025
HumanGenesis: Agent-Based Geometric and Generative Modeling for Synthetic Human Dynamics
Weiqi Li, Zehao Zhang, Liang Lin +1
\textbf{Synthetic human dynamics} aims to generate photorealistic videos of human subjects performing expressive, intention-driven motions. However, current approaches face two cor…