Author

Guanting Ye

3 papers indexed here

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Preprint Oct 2026

VLA-Stem: A Lightweight Safety Mechanism for Vision-Language-Action Models via Reinforcement Learning

Vision-Language-Action (VLA) models integrate high-level reasoning with low-level action execution for end-to-end robotic control. However, most VLA models target static manipulation in unconstrained environments, overlooking spatial constraints and dynamic obstacles. Fine-tuning VLAs on obstacle-avoidance data is a st...

Bo Zou, Wen-Hao Yu, Jia-Hao Li et al. · 0 citations

Preprint Oct 2026

TrajWAM: An Efficient Trajectory-Guided World Action Model for Dynamic Robotic Manipulation

Dynamic object manipulation requires robots to anticipate target motion while replanning fast enough to avoid executing outdated actions. Existing approaches either rely on fast reactive control without an explicit future target state or encode anticipated motion only implicitly. World Action Models (WAMs) offer a prom...

Hao-Han Geng, Sha Zhang, Wei Sun et al. · 1 citation

Preprint Aug 2026

Coalition-Aware Skill Reliability for Self-Evolving Agents

Systematic skill-bank audits reveal two recurring reliability failures: coalition pollution, where bank-level gains conceal negative coalition-level skill contributions, and cross-domain utility reversal, where source-beneficial skills reverse their effects after transfer.

Qiyan Zhao, Xiao-Feng Zhang, Bo Liu et al. · 0 citations