@inproceedings{zhang-etal-2026-arenaflow, title = "{A}rena{F}low: From Trajectory Ranking to Hierarchical Credit Propagation for Open-Ended Agent {RL}", author = "Zhang, Qiang and Ding, Ruixue and Zhang, Fanrui and Chen, Xi and Chen, Boli and Wang, Shihang and Huang, Yinfeng and Zheng, Yi and Xie, Pengjun and Zhang, Kaipeng and Liu, Jiawei and Zha, Zheng-Jun", editor = "Lee, Hung-Yi and Dev, Sunipa and Li, Jessy and Elliott, Desmond", booktitle = "Findings of the {A}ssociation for {C}omputational {L}inguistics: {EMNLP} 2026", month = oct, year = "2026", address = "Budapest, Hungary", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.findings-emnlp.2341/", pages = "50321--50343", ISBN = "979-8-89176-462-0" }