RT info:eu-repo/semantics/article T1 Grouping products for the optimization of production processes: A case in the steel manufacturing industry A1 Casado Yusta, Silvia A1 Laguna, Manuel A1 Pacheco Bonrostro, Joaquín A1 Puche Regaliza, Julio César K1 Metaheuristics K1 Combinatorial optimization K1 Manufacturing K1 Economía K1 Economics K1 Empresas-Gestión K1 Industrial management AB The optimization of a production process is often based on the efficient utilization of the production facility and equipment. In particular, reducing the time to change from producing one product to another is critical to the fulfillment of demand at a minimum cost. We study the production of steel coils in the context of searching for groups of products with similar characteristics in order to create production batches that minimize the cost of fulfilling production orders originated by a known demand. We formulate the problem as mixed-integer program and develop a heuristic solution procedure. We show that a simplified version of the problem is equivalent to the clique partition problem, which in turn is equivalent to the graph-coloring problem. Computational experiments show that the heuristic procedure is effective in finding high-quality solutions to both the clique partition problem and the original grouping problem that includes additional costs. PB Elsevier SN 0377-2217 YR 2020 FD 2020-10 LK http://hdl.handle.net/10259/8433 UL http://hdl.handle.net/10259/8433 LA eng NO This work was partially supported by FEDER funds and the Spanish Ministry of Economy and Competitiveness (Projects ECO2013-47129-C4-3-R and ECO2016-76567-C4-2-R), the Regional Government of Castilla y León, Spain (Project BU329U14 and BU071G19), and the Regional Government of Castilla y León and FEDER funds (Project BU062U16). DS Repositorio Institucional de la Universidad de Burgos RD 12-may-2024