@inproceedings{kim-etal-2026-pro,
    title = "{PRO}-Step: Step-level Process Reward Optimization for Retrieval-Augmented Generation",
    author = "Kim, MinKeon  and
      Lee, Namjun  and
      Kim, Jaekwang",
    editor = "Lee, Hung-Yi  and
      Dev, Sunipa  and
      Li, Jessy  and
      Elliott, Desmond",
    booktitle = "Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing",
    month = oct,
    year = "2026",
    address = "Budapest, Hungary",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2026.emnlp-main.1667/",
    pages = "37904--37925",
    ISBN = "979-8-89176-459-0"
}