LI, Xiaojing; WANG, Bin; YANG, Xiaochun; LUO, Meng. Self-Improving Sparse Retrieval Through Heuristic Representation Refinement and Representation-Focused Learning. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 40, n. 18, p. 15135–15143, 2026. DOI: 10.1609/aaai.v40i18.38537. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/38537. Acesso em: 15 may. 2026.