1. School of Civil and Environmental Engineering, Georgia Institute of Technology, 200 Bobby Dodd Way, Atlanta, Georgia 30332, United States
2. School of Interactive Computing, Georgia Institute of Technology, Technology Square Research Building, 85 5th St NW, Atlanta, Georgia 30308, United States
3. School of Electrical and Computer Engineering, Georgia Institute of Technology, 777 Atlantic Drive, Atlanta, Georgia 30313, United States
4. H. Milton Stewart School of Industrial and Systems Engineering, Georgia Institute of Technology, 755 Ferst Drive NW, Atlanta, Georgia 30332, United States