Zhang, Q., Cao, L., Shi, C. and Hu, L. 2021. Tripartite Collaborative Filtering with Observability and Selection for Debiasing Rating Estimation on Missing-Not-at-Random Data. Proceedings of the AAAI Conference on Artificial Intelligence. 35, 5 (May 2021), 4671-4678. DOI:https://doi.org/10.1609/aaai.v35i5.16597.