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Jingbo Shang

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#artificial intelligence Preprint Sep 2026

WitnessGym: Benchmarking Coding Agents on the Construction of Bug Witnesses

Bug validation asks a coding agent to produce an executable witness for a reported bug. The witness combines a concrete input with a testing harness and exposes faulty behavior during execution. Such evidence makes audit findings actionable, yet benchmark evaluation is difficult when cases reuse public historical bugs...

Hao-Min Qi, Xiang-Zhe Xu, Yi-Ming Huang et al. · 0 citations

BOOKMARKS: Efficient Active Storyline Memory for Role-playing

A search-based memory framework called BOOKMARKS for active grounding, which retains access to the full preceding storyline and collects task-relevant information on demand, and improves next-action fidelity in a five-dimensional evaluation.

Letian Peng, Zi-Chen Liu, Yiming Huang et al. · 0 citations
Jul 2026

Process Reward Informed Tree Rollout for Effective Multi-Turn RL

This work proposes Process-Scorer Guided Adaptive Tree Rollout (PATR), a quality-aware rollout framework for multi-turn agent RL that uses task-appropriate process feedback to score partial trajectories, selectively branches from promising states, reuses shared prefixes, and conservatively stops degenerate paths to red...

Xintong Li, Sha Li, Yuwei Zhang et al. · 0 citations

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