Abstract
We present a complementary column generation feature that produces tight upper bounds, thereby enhancing heuristic and exact column generation approaches for (minimization) set partitioning formulations that possess dense column structures. We also introduce a duality-based lower bound that prompts a useful termination criterion, which can be utilized to mitigate the tailing-off effect induced by column generation approaches. Computations are presented for the one-dimensional bin packing problem and a joint vehicle assembly-routing problem.
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Ghoniem, A., Sherali, H.D. Complementary column generation and bounding approaches for set partitioning formulations. Optim Lett 3, 123–136 (2009). https://doi.org/10.1007/s11590-008-0097-2
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DOI: https://doi.org/10.1007/s11590-008-0097-2