Krzywicki, A., W. Wobcke, X. Cai, M. Bain, A. Mahidadia, P. Compton, and Y. Kim. 2012. “Using a Critic to Promote Less Popular Candidates in a People-to-People Recommender System”. Proceedings of the AAAI Conference on Artificial Intelligence 26 (2):2305-10. https://doi.org/10.1609/aaai.v26i2.18974.