Arijit Khan is an assistant professor in the School of Computer Engineering at Nanyang Technological University, Singapore. His research interests span in the area of big-data, big-graphs, and graph systems. He received his Ph.D. from the Department of Computer Science, University of California, Santa Barbara, and did a post-doc in the Systems group at ETH Zurich. Arijit was the recipient of the prestigious IBM Ph.D. Fellowship in 2012-13. He published several papers in premier database and data-mining conferences and journals including SIGMOD, VLDB, TKDE, ICDE, SDM, EDBT, and CIKM. Arijit co-presented tutorials on emerging graph queries, big-graph systems, summarization, and uncertain graphs at ICDE 2012, VLDB 2014, VLDB 2015, and VLDB 2017, and served in the program committee of KDD, SIGMOD, VLDB, ICDM, EDBT, WWW, and CIKM. Arijit served as the co-chair of Big-O(Q) workshop co-located with VLDB 2015.Yuan Ye is a professor in the Department of Computer Science, Northeastern University, China. His research interests are graph databases, probabilistic databases, social network analysis and big-data computing systems. Yuan Ye received the B.S., M.S., and Ph.D. degrees in Computer Science from Northeastern University in 2004, 2007, and 2011, respectively. He was a visiting scholar of the Hong Kong University of Science and Technology, the Chinese University of Hong Kong, and the University of Edinburgh. Yuan Ye published several papers in premier database conferences and journals including SIGMOD, VLDB, ICDE, CIKM, VLDB Journal, TKDE, and TPDS. He served in the program committee of SIGMOD, VLDB, ICDE, EDBT, and CIKM. Yuan Ye received the award of the CCF excellent doctoral dissertation in 2012 and the excellent youth scholar of NSFC in 2016.Lei Chen received a B.S. in Computer Science and Engineering from Tianjin University, China in 1994, an M.A. from Asian Institute of Technology, Thailand, in 1997, and a Ph.D. in Computer Science from University of Waterloo, Canada in 2005. He is now an associate professor in the Department of Computer Science and Engineering at Hong Kong University of Science and Technology. His research interests include uncertain databases, graph databases, multimedia, and time series databases, and sensor and peer-to-peer databases. He is editor-in-chief of the VLDB Journal and serving as an associate editor for IEEE Transactions on Knowledge and Data Engineering and Distributed and Parallel Databases. He is the PC Co-chair of the 45th International Conference on Very Large Databases (VLDB), 2019, and has served as PC Co-chair, PC Track Chair, and PC member for many conferences. He was awarded the SIGMOD Test of Time Award in 2015. He is a member of the IEEE and ACM.
