Zhang, Qingsong, Bin Gu, Cheng Deng, and Heng Huang. “Secure Bilevel Asynchronous Vertical Federated Learning With Backward Updating”. Proceedings of the AAAI Conference on Artificial Intelligence 35, no. 12 (May 18, 2021): 10896-10904. Accessed November 21, 2024. https://ojs.aaai.org/index.php/AAAI/article/view/17301.