WebRL: Training LLM Web Agents via Self-Evolving Online Curriculum Reinforcement Learning - Qi, Zehan; Liu, Xiao; Iong, Iat Long; Lai, Hanyu; Sun, Xueqiao; Sun, Jiadai; Yang, Xinyue; Yang, Yu; Yao, Shuntian; Xu, Wei; Tang, Jie; Dong, Yuxiao (International Conference on Learning Representations, 2025)