FAN, Jiejie; BAN, Xiaojuan; ZHANG, Zhiyan; SUN, Xi. HC2-GNN: Hierarchical Graph Representation Learning for Efficient Text Classification. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 40, n. 36, p. 30611–30619, 2026. DOI: 10.1609/aaai.v40i36.40316. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/40316. Acesso em: 31 may. 2026.