Monolingual versus multilingual BERTology for Vietnamese extractive multi-document summarization Huy Quoc To author Kiet Van Nguyen author Ngan Luu-Thuy Nguyen author Anh Gia-Tuan Nguyen author 2021-11 text Proceedings of the 35th Pacific Asia Conference on Language, Information and Computation Kaibao Hu editor Jong-Bok Kim editor Chengqing Zong editor Emmanuele Chersoni editor Association for Computational Lingustics Shanghai, China conference publication to-etal-2021-monolingual https://aclanthology.org/2021.paclic-1.73/ 2021-11 692 699