Wang, Pengfei, Risheng Liu, Nenggan Zheng, and Zhefeng Gong. 2019. “Asynchronous Proximal Stochastic Gradient Algorithm for Composition Optimization Problems”. Proceedings of the AAAI Conference on Artificial Intelligence 33 (01):1633-40. https://doi.org/10.1609/aaai.v33i01.33011633.