Exact and heuristic algorithms for the interval min-max regret generalized assignment problem
Exact and heuristic algorithms for the interval min-max regret generalized assignment problem
复制标题
区间最小-最大遗憾广义分配问题的精确启发式算法
DOI:
10.1016/j.cie.2018.08.007
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发表时间:
2018
影响因子:
7.9
通讯作者:
Yagiura Mutsunori
中科院分区:
文献类型:
--
作者:
Wu Wei;Iori Manuel;Martello Silvano;Yagiura Mutsunori
We consider thegeneralized assignment problem(GAP) with min-max regret criterion under interval costs. This problem models many real-world applications in which jobs must be assigned to agents but the costs of assignment may vary after the decision has been taken. We computationally examine two heuristic methods: a fixed-scenario approach and a dual substitution algorithm. We also examine exact algorithmic approaches (Benders-like decomposition and branch-and-cut) and further introduce a more sophisticated algorithm that incorporates various methodologies, including Lagrangian relaxation and variable fixing. The resulting Lagrangian-based branch-and-cut algorithm performs satisfactorily on benchmark instances.
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