Kurashima, Takeshi, Tomoharu Iwata, Tomu Tominaga, Shuhei Yamamoto, Hiroyuki Toda, and Kazuhisa Takemura. “Personal History Affects Reference Points: A Case Study of Codeforces”. Proceedings of the International AAAI Conference on Web and Social Media 17, no. 1 (June 2, 2023): 507-518. Accessed August 18, 2024. https://ojs.aaai.org/index.php/ICWSM/article/view/22164.