Simple Unsupervised Summarization by Contextual Matching Jiawei Zhou author Alexander Rush author 2019-07 text Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics Anna Korhonen editor David Traum editor Lluís Màrquez editor Association for Computational Linguistics Florence, Italy conference publication zhou-rush-2019-simple 10.18653/v1/P19-1503 https://aclanthology.org/P19-1503/ 2019-07 5101 5106