@inproceedings{sun-etal-2026-pay,
    title = "Only Pay What You Must Spend: On-Demand Privacy Budget Payment for Differentially Private {RAG}",
    author = "Sun, Zhonghao  and
      Tian, Zhiliang  and
      Fang, Xinyue  and
      Ma, Shuo  and
      Zhang, Juhua  and
      Song, Yiping  and
      Li, Dongsheng",
    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.1990/",
    pages = "45293--45310",
    ISBN = "979-8-89176-459-0"
}