@InProceedings{cao2021attnhead,
  author =      "Cao, Shuyang
                and Wang, Lu",
  title =       "Attention Head Masking for Inference Time Content Selection in Abstractive Summarization",
  booktitle =   "Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics",
  year =        "2021",
  publisher =   "Association for Computational Linguistics",
}