Learning a Cost-Effective Annotation Policy for Question Answering Bernhard Kratzwald author Stefan Feuerriegel author Huan Sun author 2020-11 text Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP) Bonnie Webber editor Trevor Cohn editor Yulan He editor Yang Liu editor Association for Computational Linguistics Online conference publication kratzwald-etal-2020-learning 10.18653/v1/2020.emnlp-main.246 https://aclanthology.org/2020.emnlp-main.246/ 2020-11 3051 3062