@conference {1639, title = {LBSLab: {A} User Data Collection System in Mobile Environments}, booktitle = {Proceedings of the 2018 {ACM} International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers, UbiComp/ISWC 2018 Adjunct, Singapore, October 08-12, 2018}, year = {2018}, doi = {10.1145/3267305.3267546}, url = {https://doi.org/10.1145/3267305.3267546}, author = {Qingyuan Gong and Xinlei He and Qinge Xie and Shihan Lin and Guozhen She and Ruiyu Fang and Rui Han and Yang Chen and Yu Xiao and Xiaoming Fu and Xin Wang} }