An agent-based genetic algorithm for hybrid flowshops with sequence dependent setup times to minimise makespan

  • Authors:
  • Pedro Gómez-Gasquet;Carlos Andrés;Francisco-Cruz Lario

  • Affiliations:
  • Centro de Investigación de Gestión e Ingeniería de la Producción, Universitat Politècnica de València, Cno. de Vera s/n, Valencia 46022, Spain;Research Group in Reengineering, Operations Management, Group Work and Logistics Excellence, Universitat Politècnica de València, Cno. de Vera s/n, Valencia 46022, Spain;Centro de Investigación de Gestión e Ingeniería de la Producción, Universitat Politècnica de València, Cno. de Vera s/n, Valencia 46022, Spain

  • Venue:
  • Expert Systems with Applications: An International Journal
  • Year:
  • 2012

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Abstract

This paper deals with a variant of flowshop scheduling, namely, the hybrid or flexible flowshop with sequence dependent setup times. This type of flowshop is frequently used in the batch production industry and helps reduce the gap between research and operational use. This scheduling problem is NP-hard and solutions for large problems are based on non-exact methods. An improved genetic algorithm (GA) based on software agent design to minimise the makespan is presented. The paper proposes using an inherent characteristic of software agents to create a new perspective in GA design. To verify the developed metaheuristic, computational experiments are conducted on a well-known benchmark problem dataset. The experimental results show that the proposed metaheuristic outperforms some of the well-known methods and the state-of-art algorithms on the same benchmark problem dataset.