YEN, A.-Z.; HUANG, H.-H.; CHEN, H.-H. Unanswerable Question Correction in Question Answering over Personal Knowledge Base. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 35, n. 16, p. 14266-14275, 2021. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/17678. Acesso em: 20 jan. 2022.