Unsupervised Reference-Free Summary Quality Evaluation via Contrastive Learning Hanlu Wu author Tengfei Ma author Lingfei Wu author Tariro Manyumwa author Shouling Ji 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 wu-etal-2020-unsupervised 10.18653/v1/2020.emnlp-main.294 https://aclanthology.org/2020.emnlp-main.294/ 2020-11 3612 3621