Simple Conversational Data Augmentation for Semi-supervised Abstractive Dialogue Summarization Jiaao Chen author Diyi Yang 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 chen-yang-2021-simple 10.18653/v1/2021.emnlp-main.530 https://aclanthology.org/2021.emnlp-main.530/ 2021-11 6605 6616