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Minimizing the operating costs of block retrieval operations in stacking facilities

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  • DIINF. Ingeniería Informática y de Sistemas
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Author
López Plata, IsraelULL authority; Expósito Izquierdo, Cristofer JuanULL authority; Moreno Vega, José MarcosULL authority
Date
2019
URI
http://riull.ull.es/xmlui/handle/915/40628
Abstract
This paper addresses the Blocks Relocation Problem with Operating Costs, whose main objective is to retrieve a set of blocks from a stacking facility while minimizing the operating cost. An integer programming model and a deterministic algorithm are developed to solve the problem from an exact standpoint. Both approaches are able to solve the problem optimally only for small size problem scenarios, requiring large amount of computational time and memory in mediumandlarge size problem instances. On the other hand, a heuristic algorithm based on A∗ is also proposed with the goal of reducing considerably the computational resources, allowing to solve large problem instances. The computational results disclose this algorithm generates high-quality solutions in reasonable computational times.
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Universidad de La Laguna

Universidad de La Laguna

Pabellón de Gobierno, C/ Padre Herrera s/n. | 38200 | Apartado Postal: 456 | San Cristóbal de La Laguna, Santa Cruz de Tenerife - España | Teléfono: (+34) 922 31 90 00