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Author

Yanyong Zhang

2 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
Jul 2026

CAC-VLA: Context-Gated Action Conditioning for Vision-Language-Action Models

CAC-VLA is proposed, a Context-Gated Action Conditioning framework that learns a lightweight latent-action interface directly within the VLM that enables VLM-native action conditioning while calibrating the influence of latent-action guidance on expert action generation.

Yi-Fu Xiong, Wen-Hao Yu, Jia-Xuan Lin et al. · 2 citations · ⚡1

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