Chen, K., Yao, L., Zhang, D., Chang, X., Long, G. and Wang, S. (2019) “Distributionally Robust Semi-Supervised Learning for People-Centric Sensing”, Proceedings of the AAAI Conference on Artificial Intelligence, 33(01), pp. 3321-3328. doi: 10.1609/aaai.v33i01.33013321.