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Lagrangian relaxation of the generic materials and operations planning model

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Abstract

The supply chain management requires increasingly proposals for the production programming planning that brings together its special singularities. Solving coexisting products and alternative processes or by-products must be allowed by the mathematical programming models. The generic materials and operations planning (GMOP) formulation allows operating with different materials and process lists. The paper presents a procedure to solve the versatile GMOP model by the Lagrange Relaxation. The subgradient update method of the lagrangian multiplier is compared with a linear update method. Obtaining lower bound faster compared to the linear method is allowed by the subgradient method, but the linear method provides better solutions after certain iterations.

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Notes

  1. “Lagrangean” is by the French name of Joseph Louis Lagrange, and “Lagrangian” is by his original Italian name Giuseppe Lodovico Lagrangia.

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Correspondence to G. Rius-Sorolla.

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Rius-Sorolla, G., Maheut, J., Coronado-Hernandez, J.R. et al. Lagrangian relaxation of the generic materials and operations planning model. Cent Eur J Oper Res 28, 105–123 (2020). https://doi.org/10.1007/s10100-018-0593-0

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  • DOI: https://doi.org/10.1007/s10100-018-0593-0

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