SALEH, A.; JAQUES, N.; GHANDEHARIOUN, A.; SHEN, J.; PICARD, R. Hierarchical Reinforcement Learning for Open-Domain Dialog. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 34, n. 05, p. 8741-8748, 2020. DOI: 10.1609/aaai.v34i05.6400. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/6400. Acesso em: 7 aug. 2022.