The dynamic space allocation problem: Applying hybrid GRASP and Tabu search metaheuristics

  • Authors:

  • Geiza Cristina da Silva;Laura Bahiense;Luiz Satoru Ochi;Paulo Oswaldo Boaventura-Netto

  • Affiliations:

  • Department of Statistic, Federal University of Pernambuco, Recife, Pernambuco, CEP 50.740-540, Brazil;Production Engineering Program, COPPE, Federal University of Rio de Janeiro, Rio de Janeiro, CEP 21.941-972, Brazil;Computer Science Institute, Fluminense Federal University, Niterói, Rio de Janeiro, CEP 24.210-240, Brazil;Production Engineering Program, COPPE, Federal University of Rio de Janeiro, Rio de Janeiro, CEP 21.941-972, Brazil

  • Venue:
  • Computers and Operations Research
  • Year:
  • 2012

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Abstract

This work is devoted to the Dynamic Space Allocation Problem, where project duration is divided into a number of consecutive periods, each of them associated with a number of activities. The resources required by the activities have to be available in the corresponding workspaces and those sitting idle during a period have to be stored. This problem contains the Quadratic Assignment Problem (QAP) as a particular case, which puts it in the NP-hard class. In this context, the difficulty of identifying optimal solutions, even for instances of medium size, justifies the use of heuristic techniques. This work proposes a construction and a hybrid algorithm (HGT) based on the GRASP and Tabu search metaheuristics. Comparisons are presented for values obtained by HGT, pure GRASP versions, Tabu search and literature results. Computational results show the proposed methods to be competitive in relation to instances in the literature and to existing techniques.