Liu, Y., L. Huang, P. Pan, B. Wang, Y. Xu, and R. Jin. “Train a One-Million-Way Instance Classifier for Unsupervised Visual Representation Learning”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 10, May 2021, pp. 8706-14, https://ojs.aaai.org/index.php/AAAI/article/view/17055.