@inproceedings{zhao2017incorporating,
  title={Incorporating Spatio-Temporal Smoothness for Air Quality Inference},
  author={Zhao, Xiangyu and Xu, Tong and Fu, Yanjie and Chen, Enhong and Guo, Hao},
  booktitle={2017 IEEE International Conference on Data Mining (ICDM)},
  pages={1177--1182},
  year={2017},
  organization={IEEE}
}