Hallucinated but Factual! Inspecting the Factuality of Hallucinations in Abstractive Summarization Meng Cao author Yue Dong author Jackie Cheung author 2022-05 text Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Smaranda Muresan editor Preslav Nakov editor Aline Villavicencio editor Association for Computational Linguistics Dublin, Ireland conference publication cao-etal-2022-hallucinated 10.18653/v1/2022.acl-long.236 https://aclanthology.org/2022.acl-long.236/ 2022-05 3340 3354