@inproceedings{ennen-etal-2023-hierarchical,
    title = "Hierarchical Representations in Dense Passage Retrieval for Question-Answering",
    author = "Ennen, Philipp  and
      Freddi, Federica  and
      Lin, Chyi-Jiunn  and
      Kung, Po-Nien  and
      Wang, RenChu  and
      Yang, Chien-Yi  and
      Shiu, Da-shan  and
      Bernacchia, Alberto",
    editor = "Akhtar, Mubashara  and
      Aly, Rami  and
      Christodoulopoulos, Christos  and
      Cocarascu, Oana  and
      Guo, Zhijiang  and
      Mittal, Arpit  and
      Schlichtkrull, Michael  and
      Thorne, James  and
      Vlachos, Andreas",
    booktitle = "Proceedings of the Sixth Fact Extraction and VERification Workshop (FEVER)",
    month = may,
    year = "2023",
    address = "Dubrovnik, Croatia",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/2023.fever-1.2/",
    doi = "10.18653/v1/2023.fever-1.2",
    pages = "17--28"
}