@inproceedings{zheng2012the, author = {Zheng, Yu and Hong, Jason}, title = {The Preface of the 4th International Workshop on Location-Based Social Networks}, booktitle = {LBSN 2012}, year = {2012}, month = {August}, abstract = {We briefly introduce the 4th international workshop on location-based social networks (LBSN 2012), describing its objective, importance, and results.}, publisher = {ACM}, url = {https://www.microsoft.com/en-us/research/publication/the-preface-of-the-4th-international-workshop-on-location-based-social-networks/}, edition = {LBSN 2012}, }