Detecting and Suppressing Reward Hacking with Gradient Fingerprints. - Songtao Wang; Quang Hieu Pham; Fangcong Yin; Xinpeng Wang; Jocelyn Qiaochu Chen; Greg Durrett; Xi Ye (CoRR, 2026)

FlexSQL: Flexible Exploration and Execution Make Better Text-to-SQL Agents. - Quang Hieu Pham; Yang He; Ping Nie; Canwen Xu; Davood Rafiei; Yuepeng Wang 001; Xi Ye; Jocelyn Qiaochu Chen (CoRR, 2026)