XU, Yongxiu; HUANG, Heyan; FENG, Chong; HU, Yue. A Supervised Multi-Head Self-Attention Network for Nested Named Entity Recognition. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 35, n. 16, p. 14185–14193, 2021. DOI: 10.1609/aaai.v35i16.17669. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/17669. Acesso em: 25 may. 2026.