Huang, X., R. Xu, H. Zhou, Z. Wang, Z. Liu, and L. Li. “ACMo: Angle-Calibrated Moment Methods for Stochastic Optimization”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 9, May 2021, pp. 7857-64, doi:10.1609/aaai.v35i9.16959.