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Ziyang Chen

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Preprint Aug 2026

How Should Vision-Language-Action Models Use Proprioceptive State?

Five representative interfaces are implemented -- discrete state prompt, VLM prefix, action prefix, state expert, and feature modulation -- under matched implementation details, and evaluated on 45 atomic tasks spanning three task families plus 20 composite tasks.

Yiren Zhao, Ziyang Chen, Ziyang Rao et al. · 0 citations