Attention Head Masking for Inference Time Content Selection in Abstractive Summarization Shuyang Cao author Lu Wang author 2021-06 text Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies Kristina Toutanova editor Anna Rumshisky editor Luke Zettlemoyer editor Dilek Hakkani-Tur editor Iz Beltagy editor Steven Bethard editor Ryan Cotterell editor Tanmoy Chakraborty editor Yichao Zhou editor Association for Computational Linguistics Online conference publication cao-wang-2021-attention 10.18653/v1/2021.naacl-main.397 https://aclanthology.org/2021.naacl-main.397/ 2021-06 5008 5016