Aldous, K. K., An, J., & Jansen, B. J. (2019). View, Like, Comment, Post: Analyzing User Engagement by Topic at 4 Levels across 5 Social Media Platforms for 53 News Organizations. Proceedings of the International AAAI Conference on Web and Social Media, 13(01), 47-57. Retrieved from https://www.aaai.org/ojs/index.php/ICWSM/article/view/3208