Xiaomei Zhang received the BE degree from University of Science and Technology of China in 2010 and the PhD degree in computer science and engineering from the Pennsylvania State University in 2016. Science then, she has been with the Department of Computer Science at the University of South Carolina Beaufort, where she is currently an assistant professor. Her research interests include data science, machine learning, mobile computing, mobile social networks, and wireless communications. Guohong Cao is a Distinguished Professor in the Department of Computer Science and Engineering at the Pennsylvania State University. He received his Ph.D. in computer science from the Ohio State University in 1999. He has published more than 200 papers in the areas of mobile computing, machine learning, wireless networks, wireless security, and privacy, which have been cited over 20000 times. He has served on the editorial board of IEEE Transactions on Mobile Computing, IEEE Transactions onWireless Communications, and IEEE Transactions on Vehicular Technology, and has served on the organizing and technical program committees of many conferences, including the TPC Chair/Co-Chair of IEEE SRDS, MASS, and INFOCOM. He has received several best paper awards, the IEEE INFOCOM Test of Time award, and the NSF CAREER award. He is a Fellow of the AAAS and a Fellow of the IEEE.