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A strong integer programming formulation for hybrid flowshop scheduling

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info:eu-repo/semantics/closedAccess

Date

2019

Author

Ünal, A. Tamer
Ağralı, Semra
Taşkın, Z. Caner

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Citation

Ünal, A. T., Ağralı, S., & Taşkın, Z. C. (September 09, 2019). A strong integer programming formulation for hybrid flowshop scheduling. Journal of the Operational Research Society, 1-11.

Abstract

We consider a hybrid flowshop scheduling problem that includes parallel unrelated discrete machines or batch processing machines in different stages of a production system. The problem is motivated by a bottleneck process within the production system of a transformer producer located in the Netherlands. We develop an integer programming model that minimises the total tardiness of jobs over a finite planning horizon. Our model is applicable to a wide range of production systems organised as hybrid flowshops. We strengthen our integer program by exploiting the special properties of some constraints in our formulation. We develop a decision support system (DSS) based on our proposed optimisation model. We compare the results of our initial optimisation model with an improved formulation as well as with a heuristic that was in use at the company before the implementation of our DSS. Our results show that the improved optimisation model significantly outperforms the heuristic and the initial optimisation model in terms of both the solution time and the strength of its linear programming relaxation.

Source

Journal of the Operational Research Society

URI

https://doi.org/10.1080/01605682.2019.1654414
https://hdl.handle.net/20.500.11779/1137

Collections

  • Araştırma Çıktıları, Scopus İndeksli Yayınlar Koleksiyonu [375]
  • Araştırma Çıktıları, WOS İndeksli Yayınlar Koleksiyonu [433]
  • MF, EM, Makale Koleksiyonu [33]



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