Han Luo
I am a third-year undergraduate student in Computer Science at the University of Leeds, UK, and Southwest Jiaotong University, China. My research focuses on LLM agents.
I am fortunate to work with Prof. Lucy Lu Wang in the LARCH Lab at the University of Washington. Previously, I worked with Prof. Guy Laban in LabaLab at Ben-Gurion University of the Negev and at the University of Cambridge.
Open to collaborations: I am always interested in potential research collaborations. Please feel free to reach out via email!
Selected publications
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HERA
Co-evolving agent harnesses and environments for reliable agentic abstention.
Agentic Abstention
A benchmark and context-engineering study of when LLM agents should stop acting and abstain.
Plan in Sandbox
A physics-grounded sandbox framework for learning abstracted embodied navigation experience.
SPASM
A stability-first framework for persona-driven LLM-LLM dialogue simulation with egocentric context projection.
DialogGuard
A practitioner-facing interface for multi-agent psychosocial safety evaluation of sensitive LLM responses.
News
Oct 5, 2026
HERA preprint released
Our paper, HERA: Harness-Environment Co-Evolution for Reliable Agentic Abstention, is now available on arXiv.
Sep 26, 2026
Agentic Abstention accepted to NeurIPS 2026
Our paper, Agentic Abstention: Do Agents Know When to Stop Instead of Act?, has been accepted to NeurIPS 2026.
Jun 27, 2026
Agentic Abstention preprint released
Our paper, Agentic Abstention: Do Agents Know When to Stop Instead of Act?, is now available as arXiv:2606.28733.
May 11, 2026
SAGE arXiv preprint released
Our ICML 2026 paper, Plan in Sandbox, Navigate in Open Worlds, is now available as arXiv:2605.10118.
Where to find me
Now Seattle
Dec 2026 Sydney