Xu, Y., L. Zhu, Z. Cheng, J. Li, and J. Sun. “Multi-Feature Discrete Collaborative Filtering for Fast Cold-Start Recommendation”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 34, no. 01, Apr. 2020, pp. 270-8, doi:10.1609/aaai.v34i01.5360.