@inproceedings{CPZ15-2,
  author        = {R. Cheng and J. Pang and Y. Zhang},
  title         = {Inferring friendship from check-in data of location-based social networks},
  booktitle     = {Proc.\ 5th Workshop on Social Network Analysis in Applications (SNAA'15) (as part of 7th IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM'15))},
  publisher     = {ACM Press},
  year          = {2015},
  pages         = {1284-1291}
}