Liu, Chenghao, Xin Wang, Tao Lu, Wenwu Zhu, Jianling Sun, and Steven Hoi. “Discrete Social Recommendation”. Proceedings of the AAAI Conference on Artificial Intelligence 33, no. 01 (July 17, 2019): 208–215. Accessed July 26, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/3787.