Chen, C., D. Li, J. Yan, H. Huang, and X. Yang. “Scalable and Explainable 1-Bit Matrix Completion via Graph Signal Learning”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 8, May 2021, pp. 7011-9, https://ojs.aaai.org/index.php/AAAI/article/view/16863.