@inproceedings{zhang-etal-2026-tsa,
    title = "{TSA}-{RAG}: Structure-Preserving Retrieval-Augmented Generation via Tiered Document Graph",
    author = "Zhang, Kaiyuan  and
      Feng, Chong  and
      Shi, Ge  and
      Xu, Lingnan  and
      Wang, Bo",
    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.754/",
    pages = "15874--15894",
    ISBN = "979-8-89176-462-0"
}