Chieh-Yuan Tsai is a full professor in the Department of Industrial Engineering and Management at Yuan-Ze University, Taiwan. He received his M.S. and Ph.D. degrees in the Department of Industrial and Manufacturing Systems Engineering from the University of Missouri-Columbia, USA. His research activities include data mining, big data analysis, recommendation systems, and mobile technology and applications. He has published papers in well-known journals (Decision Support Systems, Neurocomputing, Applied Soft Computing, Knowledge-Based Systems, Knowledge and Information Systems, etc.).