Khabiri, E., C.-F. Hsu, and J. Caverlee. “Analyzing and Predicting Community Preference of Socially Generated Metadata: A Case Study on Comments in the Digg Community”. Proceedings of the International AAAI Conference on Web and Social Media, vol. 3, no. 1, Mar. 2009, pp. 238-41, https://ojs.aaai.org/index.php/ICWSM/article/view/13973.