Yan, Rui, and Wei Wu. “Empowering Conversational AI Is a Trip to Mars: Progress and Future of Open Domain Human-Computer Dialogues”. Proceedings of the AAAI Conference on Artificial Intelligence 35, no. 17 (May 18, 2021): 15078-15086. Accessed January 18, 2022. https://ojs.aaai.org/index.php/AAAI/article/view/17771.