Sung-Hyuk Park Ho-Jin Lee Sang Pil Han Dong-Hoon Lee User Age Profile Assessment Using SMS Network Neighbors' Age Profiles. 960-965 2009 AINA Workshops http://doi.ieeecomputersociety.org/10.1109/WAINA.2009.136 conf/aina/2009w db/conf/aina/ainaw2009.html#ParkLHL09