@inproceedings{cao-wang-2021-cliff,
    title = "{CLIFF}: Contrastive Learning for Improving Faithfulness and Factuality in Abstractive Summarization",
    author = "Cao, Shuyang  and
      Wang, Lu",
    editor = "Moens, Marie-Francine  and
      Huang, Xuanjing  and
      Specia, Lucia  and
      Yih, Scott Wen-tau",
    booktitle = "Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing",
    month = nov,
    year = "2021",
    address = "Online and Punta Cana, Dominican Republic",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/2021.emnlp-main.532/",
    doi = "10.18653/v1/2021.emnlp-main.532",
    pages = "6633--6649"
}