Mao, Hongli, Xian-Ling Mao, Hanlin Tang, Yu-Ming Shang, and Heyan Huang. “Span Graph Transformer for Document-Level Named Entity Recognition”. Proceedings of the AAAI Conference on Artificial Intelligence 38, no. 17 (March 24, 2024): 18769–18777. Accessed May 13, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/29841.