Learn to Copy from the Copying History: Correlational Copy Network for Abstractive Summarization Haoran Li author Song Xu author Peng Yuan author Yujia Wang author Youzheng Wu author Xiaodong He author Bowen Zhou author 2021-11 text Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing Marie-Francine Moens editor Xuanjing Huang editor Lucia Specia editor Scott Wen-tau Yih editor Association for Computational Linguistics Online and Punta Cana, Dominican Republic conference publication li-etal-2021-learn 10.18653/v1/2021.emnlp-main.336 https://aclanthology.org/2021.emnlp-main.336/ 2021-11 4091 4101