Huang, Xunpeng, Xianfeng Liang, Zhengyang Liu, Lei Li, Yue Yu, and Yitan Li. “SPAN: A Stochastic Projected Approximate Newton Method”. Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 02 (April 3, 2020): 1520-1527. Accessed May 8, 2024. https://ojs.aaai.org/index.php/AAAI/article/view/5511.