Genetic algorithm optimization of an integrated aggregate production-distribution plan in supply chains

Publisher:
Taylor & Francis Ltd
Publication Type:
Journal Article
Citation:
International Journal Of Production Research, 2012, 50 (1), pp. 81 - 96
Issue Date:
2012-01
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A production plan concerns the allocation of resources of the company to meet the demand forecast over a certain planning horizon and a distribution plan involves the management of warehouse storage assignments, transport routings and inventory management issues. A productiondistribution plan integrates the decisions in production, transport and warehousing as well as inventory management. The overall performance of a supply-chain is influenced significantly by the decisions taken in its productiondistribution plan and hence one key issue in the performance evaluation of a supply chain is the modelling and optimisation of the productiondistribution plan considering its actual complexity. Based on the integration of Aggregate Production Plan and Distribution Plan, this article develops a mixed integer non-linear formulation for a two-echelon supply network (i.e. a production-distribution network) considering the real-world variables and constraints. Genetic Algorithm (GA), known as a robust technique for solving complex problems, is employed for the optimisation of the developed mathematical model due to its ability to effectively deal with a large number of parameters. To demonstrate the applicability of the methodology, a real-life case study will be finally studied incorporating the production of different types of products in several manufacturing plants and the distribution of finished products from plants to a number of end-users via multiple direct/indirect transport routes.
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