Chi, Ed, and Todd Mytkowicz. “Understanding the Efficiency of Social Tagging Systems Using Information Theory”. Proceedings of the International AAAI Conference on Web and Social Media 2, no. 1 (September 25, 2021): 178-179. Accessed May 21, 2022. https://ojs.aaai.org/index.php/ICWSM/article/view/18639.