Authors

Pengrui Han

Publications 2

Preprint Open access

Building LLM Agent Systems the Deep Learning Way: From Modular Design to Architecture Search

Tao Feng, Pengrui Han, Zhongjie Dai et al. · 2026

Large Language Models (LLMs) have revolutionized AI research and enabled exciting agent systems. To build a complex LLM agent system, most existing research relies on insights from other domains or heuristics to manually build the agent system. However, this approach often requires heavy hand-engineering and fails to f …

Preprint Open access

Representational Control over Self-Report & Behavior Coherence in LLM Risk-Taking

Rafal Kocielnik, Peiyang Song, Pengrui Han et al. · 2026

Self-report is an appealing low-cost probe of an LLM's dispositions, but recent work finds only selective agreement between what models report and how they behave. Prior accounts establish these patterns by prompting black-box LLMs, leaving open whether the gap is a prompting artefact or a fact about how the underlying …

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