HUANG, C.; ZHANG, Z.; CARDIE, C. HAPO: Training Language Models to Reason Concisely via History-Aware Policy Optimization. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 40, n. 37, p. 31122-31130, 2026. DOI: 10.1609/aaai.v40i37.40373. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/40373. Acesso em: 4 may. 2026.