ACADEMIC HOMEPAGE

Hui Zhang

I hold a master’s degree in Applied Statistics from Beijing Institute of Technology. I study how language-model agents learn from experience, use external knowledge, and make reliable decisions over extended interactions. My recent work connects clinical-agent evaluation, regression-safe knowledge routing, audits of LLM judges, and exact feedback reduction for model comparison. Drawing on statistics, I aim to develop agents that improve over time and evaluation methods that make their progress measurable, trustworthy, and efficient.

Research interests

My long-term research goal is to build language-model agents that learn reliably from interaction, supported by statistically grounded and resource-efficient evaluation. I am particularly interested in the connection between agent learning, feedback quality, and the evidence needed to establish real improvement.

  • Continual learning and agent memory — How can agents turn interaction traces into useful experience, transfer it to new tasks, and retain earlier capabilities through updates?
  • Reliable reasoning and knowledge use — When should an agent seek evidence, consult another agent, or revise its answer? I study adaptive routing and decision rules that improve reasoning while limiting regressions.
  • LLM judges and human feedback — How can evaluation distinguish verifiable errors, stable human preferences, and genuine disagreement? I am interested in judge reliability, preference calibration, and long-horizon creative tasks.
  • Efficient statistical evaluation — How can model comparisons use less feedback without losing the information needed for valid conclusions? My interests include exact estimation, uncertainty, coupled sampling, and evaluation during model updates.

Papers

MedEvoEval: Evaluating Continual Evolution of Doctor Agents through Simulated Clinical Episodes

NeurIPS 2026 · E&D Track · Poster

Hui Zhang

An executable evaluation protocol for studying evidence acquisition, resource use, and experience-driven changes in doctor agents.

Learning When to Trust Medical Knowledge: Regression-Safe Routing for Clinical Reasoning

AAAI submission · Under review

Hui Zhang, Yujia Zeng, Yuhao Xin

Med-TrustRouter selects how to use external evidence and reasoning chains while preserving the base answer unless another action is confidently better.

DramaGrow: A Regime-Aware Benchmark for Auditing LLM Judges of Multi-Episode Drama

AAAI submission · Under review

Hui Zhang, Yibo Su

A benchmark for auditing LLM judges of multi-episode drama, separating verifiable defects, strong panel preferences, and human disagreement.

Pay for the Difference: Exact Feedback Reduction for Language Model Comparison

ICLR submission · Under review

Contrast-Aware Feedback Acquisition skips scores that cancel from the requested comparisons, recovering fully scored sample means and covariances exactly.

A novel composite of Closed-Cell aluminum foam and Phase-Change material for enhanced mechanical safety in EV battery systems

Composite Structures · 2025

Peng Zhang, Hui Zhang, Nianqi Chen, Ningzhen Wang, Changping Song, Ruyuan Yang, Xiang Chen

A composite combining aluminum foam and phase-change material to improve energy absorption and support thermal energy storage in EV battery systems.

Blog

Earlier notes are written in Chinese.