Stepwise Extractive Summarization and Planning with Structured Transformers Shashi Narayan author Joshua Maynez author Jakub Adamek author Daniele Pighin author Blaz Bratanic author Ryan McDonald author 2020-11 text Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP) Bonnie Webber editor Trevor Cohn editor Yulan He editor Yang Liu editor Association for Computational Linguistics Online conference publication narayan-etal-2020-stepwise 10.18653/v1/2020.emnlp-main.339 https://aclanthology.org/2020.emnlp-main.339/ 2020-11 4143 4159