A hybrid genetic algorithm for operating room scheduling

Abstract

In this research, we studied operating room scheduling problem of assigning a set of surgeries to several multifunctional operating rooms. The objectives are to maximize the utilization of the operating rooms, to minimize the overtime-operating cost, and to minimize the wasting cost for the unused time. To begin with, a revised mathematical model is constructed to assign surgeries to operating rooms within one week. Then, we proposed four easy-to-implement heuristics that can guarantee to find feasible solutions for the studied problem efficiently. Furthermore, we presented four local search procedures that can improve a given solution significantly. Finally, a hybrid genetic algorithm (HGA) that incorporated with initial solutions, local search procedures and elite search procedure is applied to the studied problem. Computational results show that for small problem instances, the HGA can find near optimal solutions efficiently while for large problem instances, the HGA performs significantly better than the four proposed heuristics. We concluded that surgery schedules obtained by using HGA has less wasting cost for the unused time, much higher utilization of operating rooms, and produce less overtime-operating cost.

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Correspondence to Yang-Kuei Lin.

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Lin, Y., Chou, Y. A hybrid genetic algorithm for operating room scheduling. Health Care Manag Sci 23, 249–263 (2020). https://doi.org/10.1007/s10729-019-09481-5

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Keywords

  • Scheduling
  • Operating rooms
  • Heuristics
  • Genetic algorithm