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Patient-to-room assignment with single-rooms entitlements: Combinatorial insights and integer programming formulations

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  • Brandt, Tabea
  • Büsing, Christina
  • Engelhardt, Felix

Abstract

Patient-to-room assignment (PRA) is a scheduling problem in decision support for hospitals. It consists of assigning patients to rooms during their stay at a hospital according to certain conditions and objectives, e.g., ensuring gender separated rooms, avoiding transfers and respecting single-room requests. This work presents combinatorial insights about the feasibility of PRA and about how (many) single-room requests can be respected. We further compare different integer programming (IP) formulations for PRA as well as the influence of different objectives on the runtime using real-world data. Based on these results, we develop a fast IP-based solution approach, which obtains high quality solutions. In contrast to previous IP-formulations, the results of our computational study indicate that large, real-world instances can be solved to a high degree of optimality within (fractions of) seconds. We support this result by a computational study using a large set of realistic but randomly generated instances with 50% to 95% capacity utilisation.

Suggested Citation

  • Brandt, Tabea & Büsing, Christina & Engelhardt, Felix, 2025. "Patient-to-room assignment with single-rooms entitlements: Combinatorial insights and integer programming formulations," European Journal of Operational Research, Elsevier, vol. 325(1), pages 20-37.
    • Handle: RePEc:eee:ejores:v:325:y:2025:i:1:p:20-37
    DOI: 10.1016/j.ejor.2025.02.018
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