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Stable multi-skill workforce assignments

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  • Murat Fırat
  • C. Hurkens
  • Alexandre Laugier

Abstract

This paper analyzes stability in multi-skill workforce assignments of technicians and jobs. In our stability analysis, we extend the notion of blocking pairs as stated in the Marriage model of Gale-Shapley to the multi-skill workforce assignment. It is shown that finding stable assignments is NP-hard. A special case turns out to be solvable in polynomial time. For the general case, we give a characterization of the set of stable assignments by means of linear inequalities involving binary variables. We propose an integer programming (IP) model to construct optimal stable assignments with several objectives. In the computational results, we observe that it is easier to attain stability in instances with easy jobs and we consider a range of instances to show how fast the solution time increases. Open questions and further directions are discussed in the conclusion section. Copyright Springer Science+Business Media, LLC 2014

Suggested Citation

  • Murat Fırat & C. Hurkens & Alexandre Laugier, 2014. "Stable multi-skill workforce assignments," Annals of Operations Research, Springer, vol. 213(1), pages 95-114, February.
    • Handle: RePEc:spr:annopr:v:213:y:2014:i:1:p:95-114:10.1007/s10479-012-1224-0
    DOI: 10.1007/s10479-012-1224-0
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    References listed on IDEAS

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    1. Valls, Vicente & Pérez, Ángeles & Quintanilla, Sacramento, 2009. "Skilled workforce scheduling in Service Centres," European Journal of Operational Research, Elsevier, vol. 193(3), pages 791-804, March.
    2. Avramidis, Athanassios N. & Chan, Wyean & Gendreau, Michel & L'Ecuyer, Pierre & Pisacane, Ornella, 2010. "Optimizing daily agent scheduling in a multiskill call center," European Journal of Operational Research, Elsevier, vol. 200(3), pages 822-832, February.
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