Practical Obstacles to Deploying Active Learning David Lowell author Zachary C Lipton author Byron C Wallace author 2019-11 text Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP) Kentaro Inui editor Jing Jiang editor Vincent Ng editor Xiaojun Wan editor Association for Computational Linguistics Hong Kong, China conference publication lowell-etal-2019-practical 10.18653/v1/D19-1003 https://aclanthology.org/D19-1003/ 2019-11 21 30