Robust facility location with structural complexity and demand uncertainty

Yun Hui Lin, Yuan Wang (), Loo Hay Lee and Ek Peng Chew
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Yun Hui Lin: National University of Singapore
Yuan Wang: National University of Singapore
Loo Hay Lee: National University of Singapore
Ek Peng Chew: National University of Singapore

Flexible Services and Manufacturing Journal, 2021, vol. 33, issue 2, No 7, 485-507

Abstract: Abstract Building robust logistics networks against facility disruptions has been gaining more attention from both researchers and practitioners. However, in pursuit of high built-in network robustness, one usually has to increase the network redundancy and complexity, which adds to the difficulty of management and induces additional operating costs. In this paper, we aim to balance the trade-off between robustness and complexity in the logistics network design problem and propose a model that explicitly considers the demand uncertainty. Due to the non-convexity of our model, we present a linear reformulation method that transforms the model into a MILP. From our numerical studies, in some cases, we can simultaneously enhance robustness and reduce complexity. When the demand uncertainty increases, the network will become less robust. It will require more backup links to guarantee a given robustness requirement. Consequently, the network can exhibit higher complexity and incur additional costs. We also observe it might be possible to dramatically reduce the complexity at a reasonable cost. One can achieve a relatively simple and robust network by only maintaining backup links for customer zones with large demand volumes. Finally, we provide discussions on managerial implications.

Keywords: Structural complexity; Network robustness; Network design; Facility location; Demand uncertainty (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s10696-020-09382-8

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