Kim, Sunghwan Mac, Stephen Wan, Cécile Paris, and Andreas Duenser. “Social Media Relevance Filtering Using Perplexity-Based Positive-Unlabelled Learning”. Proceedings of the International AAAI Conference on Web and Social Media 14, no. 1 (May 26, 2020): 370-381. Accessed April 17, 2021. https://ojs.aaai.org/index.php/ICWSM/article/view/7307.