Shi, W., Gu, B., Li, X. and Huang, H. (2020) “Quadruply Stochastic Gradient Method for Large Scale Nonlinear Semi-Supervised Ordinal Regression AUC Optimization”, Proceedings of the AAAI Conference on Artificial Intelligence, 34(04), pp. 5734-5741. doi: 10.1609/aaai.v34i04.6029.