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Author

Zhangchen Xu

University of Washington

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#artificial intelligence Preprint Sep 2026

SecProbe: Adaptive Evaluation of Coding Agents on Cybersecurity Vulnerabilities

SecProbe is introduced, a framework for adaptive evaluation that combines Item Response Theory (IRT) with on-demand synthesis of repository-scale vulnerability-repair tasks and achieves comparable agent ability estimates while requiring agents to solve up to 29.5\% fewer tasks.

Xiao-Nan Luo, Yue Huang, Ke-Han Guo et al. · 0 citations
#machine learning Review Sep 2026

Reward Hacking Challenges Oversight of Autonomous Research Agents

How often models reward-hack without instructions to do so, how effective and detectable their methods are when hacking is allowed, and how they adapt when an LLM review panel returns its decision and reasons are studied.

Yue Huang, Zhangchen Xu, Yu-Chen Ma et al. · 1 citation

Steering Multimodal Large Language Models Decoding for Context-Aware Safety

Safety-aware Contrastive Decoding (SafeCoDe) is introduced, a lightweight and model-agnostic decoding framework that dynamically adjusts token generation based on multimodal context that consistently improves context-sensitive refusal behaviors while preserving model helpfulness.

Zheyuan Liu, Zhangchen Xu, Guangyao Dou et al. · 6 citations

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