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Edward Sun

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#robotics Preprint Oct 2026

Refuses in Chat, Complies with Arms: LLM Refusal Does Not Survive Robot Control

Frontier language models reliably refuse to explain how to cause physical harm. We ask whether this refusal survives when the same models control a robot. We introduce RoboHarm, a physical AI safety benchmark of harmful robot instructions, and test seven frontier models on it. We hold each model fixed and vary only the...

Edward Sun, Christopher Leet, Sravanthi Machcha et al. · 0 citations
#artificial intelligence Preprint Sep 2026

When Seeing Overrides Knowing: Visual Dominance and Deferral-Based Method for Personalized Safety in VLMs

Vision-language models (VLMs) are increasingly deployed in high-stakes settings, where a response that is reasonable in general may still be unsafe for a particular user whose medical, emotional, or situational context is unknown to the model. We study this problem of personalized safety in multimodal systems and intro...

Edward Sun, Yu-Chen Wu, Zixian Ma et al. · 0 citations

Memory as a Controlled Process: Learned Adaptive Memory Management for LLM Agents

This work presents Memory as a Controlled Process (MemCon), a framework that models memory operations as a Markov Decision Process and learns an online policy that adaptively decides when, what, and how much to retrieve, when to inject a distilled plan, and when to consolidate or forget.

Eric Jiang, Zhi Zhang, Yuchen Wu et al. · 1 citation
#artificial intelligence Preprint Aug 2026

Meta-Ctrl: Guaranteed Plan Generation by Decoupling Syntactic and Semantic Constraints

Meta-Ctrl is proposed, a constrained-decoding framework that guarantees the encoded constraints while preserving the base LM's plan quality, and is demonstrated on a real tabletop robot, where every generated plan satisfies its preconditions and goals by construction.

Gwen Yidou-Weng, Edward Sun, Tian-Yi Ma et al. · 0 citations

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