Reducing Quantity Hallucinations in Abstractive Summarization Zheng Zhao author Shay B Cohen author Bonnie Webber author 2020-11 text Findings of the Association for Computational Linguistics: EMNLP 2020 Trevor Cohn editor Yulan He editor Yang Liu editor Association for Computational Linguistics Online conference publication zhao-etal-2020-reducing 10.18653/v1/2020.findings-emnlp.203 https://aclanthology.org/2020.findings-emnlp.203/ 2020-11 2237 2249