Tao, Chongyang, Lili Mou, Dongyan Zhao, and Rui Yan. “RUBER: An Unsupervised Method for Automatic Evaluation of Open-Domain Dialog Systems”. Proceedings of the AAAI Conference on Artificial Intelligence 32, no. 1 (April 25, 2018). Accessed September 22, 2024. https://ojs.aaai.org/index.php/AAAI/article/view/11321.