Krzywicki, A., Wobcke, W., Cai, X., Bain, M. , Mahidadia, A., Compton, P. and Kim, Y. 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 (Jul. 2012), 2305-2310. DOI:https://doi.org/10.1609/aaai.v26i2.18974.