Xi, Nan, Di Ma, Marcus Liou, Zachary C. Steinert-Threlkeld, Jason Anastasopoulos, and Jungseock Joo. “Understanding the Political Ideology of Legislators from Social Media Images”. Proceedings of the International AAAI Conference on Web and Social Media 14, no. 1 (May 26, 2020): 726-737. Accessed August 11, 2020. https://aaai.org/ojs/index.php/ICWSM/article/view/7338.