Dr. Zhen-Song Chen obtained his Ph.D. in Traffic and Transportation Plan and Management from the School of Transportation and Logistics, Southwest Jiaotong University, Chengdu, China. He was a research assistant and a postdoctoral researcher with the Department of Systems Engineering and Engineering Management, City University of Hong Kong. He is currently a Research Associate with the School of Civil Engineering, Wuhan University. He serves as an Area Editor of the International Journal of Computational Intelligence Systems. His current research interests include preference modelling, aggregation theory, computing with words, and group decision analysis. He has published more than 40 peer-reviewed journal papers related to his areas. Recently, he was rewarded the Outstanding Reviewer of Knowledge-based Systems.