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- W2975843583 abstract "Scheduling of a hot strip mill is an important decision problem in the steel manufacturing industry. Previous studies on the hot strip mill scheduling problem have mostly neglected the random factors in production. However, random variations in processing times are inevitable due to unpredictable delays and disturbances. In this article, we adopt a robust optimization approach to deal with the uncertainty in processing times. The advantage is that no assumption has to be made regarding the distribution of random data, and the obtained schedule will remain strictly feasible when the variations have not exceeded a predefined uncertainty set. First, a mixed-integer linear programming model is presented to formulate the robust scheduling problem. Then, a hybrid metaheuristic algorithm, which combines ant colony system (ACS) and enhanced local search, is proposed to provide an efficient solution to the problem. Finally, extensive computational experiments involving both randomly generated and real-world instances have been conducted to verify the effectiveness of the proposed algorithm. It is shown that the algorithm achieves optimality for small instances and outperforms two state-of-the-art metaheuristics when used to solve large instances." @default.
- W2975843583 created "2019-10-03" @default.
- W2975843583 creator A5065037360 @default.
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- W2975843583 date "2020-04-01" @default.
- W2975843583 modified "2023-10-16" @default.
- W2975843583 title "Robust Scheduling of Hot Rolling Production by Local Search Enhanced Ant Colony Optimization Algorithm" @default.
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- W2975843583 doi "https://doi.org/10.1109/tii.2019.2944247" @default.
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