MulDA: A Multilingual Data Augmentation Framework for Low-Resource Cross-Lingual NER Linlin Liu author Bosheng Ding author Lidong Bing author Shafiq Joty author Luo Si author Chunyan Miao author 2021-08 text Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers) Chengqing Zong editor Fei Xia editor Wenjie Li editor Roberto Navigli editor Association for Computational Linguistics Online conference publication liu-etal-2021-mulda 10.18653/v1/2021.acl-long.453 https://aclanthology.org/2021.acl-long.453/ 2021-08 5834 5846