Crane Scheduling with Spatial Constraints

• Main Authors: LIM, Andrew, RODRIGUES, Brian, XIAO, Fei, ZHU, Yi
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2010
• Subjects: scheduling; dynamic programming; heuristics; Operations and Supply Chain Management
• Online Access: https://ink.library.smu.edu.sg/lkcsb_research/2854; https://doi.org/10.1002/nav.10123
• Institution: Singapore Management University

In this work, we examine port crane scheduling with spatial and separation constraints. Although common to most port operations, these constraints have not been previously studied. We assume that cranes cannot cross, there is a minimum distance between cranes and jobs cannot be done simultaneously. The objective is to find a crane-to-job matching which maximizes throughput under these constraints. We provide dynamic programming algorithms, a probabilistic tabu search, and a squeaky wheel optimization heuristic for solution. Experiments show the heuristics perform well compared with optimal solutions obtained by CPLEX for small scale instances where a squeaky wheel optimization with local search approach gives good results within short times.