Weighted tardiness minimization in job shops with setup times by hybrid genetic algorithm

  • Authors:
  • Miguel A. González;Camino R. Vela;Ramiro Varela

  • Affiliations:
  • Department of Computer Science, University of Oviedo, Gijón, Spain;Department of Computer Science, University of Oviedo, Gijón, Spain;Department of Computer Science, University of Oviedo, Gijón, Spain

  • Venue:
  • CAEPIA'11 Proceedings of the 14th international conference on Advances in artificial intelligence: spanish association for artificial intelligence
  • Year:
  • 2011

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Abstract

In this paper we confront the weighted tardiness minimization in the job shop scheduling problem with sequence-dependent setup times. We start by extending an existing disjunctive graph model used for makespan minimization to represent the weighted tardiness problem. Using this representation, we adapt a local search neighborhood originally defined for makespan minimization. The proposed neighborhood structure is used in a genetic algorithm hybridized with a simple tabu search method. This algorithm is quite competitive with state-of-theart methods in solving problem instances from several datasets of both classical JSP and JSP with setup times.