Pranav Rajpurkar, Robin Jia, Percy Liang. Know What You Don't Know: Unanswerable Questions for SQuAD. In Iryna Gurevych, Yusuke Miyao, editors, Proceedings of the 56th Annual Meeting of the Association for Computational Linguistics, ACL 2018, Melbourne, Australia, July 15-20, 2018, Volume 2: Short Papers. pages 784-789, Association for Computational Linguistics, 2018. [doi]
Abstract is missing.