@conference {1720, title = {Identifying unfamiliar callers{\textquoteright} professions from privacy-preserving mobile phone data}, booktitle = {16th IEEE International Conference on Mobility, Sensing and Networking (MSN 2020)}, year = {2020}, month = {12/2020}, publisher = {IEEE}, organization = {IEEE}, address = {Tokyo, Japan}, author = {Jiaquan Zhang and Xiaoming Yao and Xiaoming Fu} }