A note on “branch-and-price approach for the multi-skill project scheduling problem”
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In a recent paper published in Optimization Letters, Montoya et al. (Optim Lett 8:1721–1734, 2014) proposed a branch-and-price approach for a multi-skill project scheduling problem. In that paper, an integer linear programming formulation was first introduced which, unfortunately, has a number of inconsistences. At the interest of mathematical rigor, in this note, we refine such formulation.
KeywordsProject scheduling Multi-skilled resources MILP models
This work was partially supported by the Fundação para a Ciência e Tecnologia (Portuguese Foundation for Science and Technology) through the projects PEst-OE/MAT/UI0297/2011 (Centro de Matemática e Aplicações) and PEst-OE/MAT/UI0152/ 2013 (Centro de Investigação Operacional).