CHEN, Zhuotong; LIU, Fang; ZHU, Xuan; WANG, Haozhu; LI, Jiayu; QI, Yanjun; GHAVAMZADEH, Mohammad. Preference Optimization via Contrastive Divergence: Your Policy Is Secretly an NLL Estimator. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 40, n. 44, p. 37286–37294, 2026. DOI: 10.1609/aaai.v40i44.41060. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/41060. Acesso em: 14 may. 2026.