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Title: Deep reinforcement learning for dynamic scheduling of a flexible job shop
Authors: Liu, Renke
Piplani, Rajesh
Toro, Carlos
Keywords: Engineering::Industrial engineering
Issue Date: 2022
Source: Liu, R., Piplani, R. & Toro, C. (2022). Deep reinforcement learning for dynamic scheduling of a flexible job shop. International Journal of Production Research, 60(13), 4049-4069.
Journal: International Journal of Production Research
Abstract: The ability to handle unpredictable dynamic events is becoming more important in pursuing agile and flexible production scheduling. At the same time, the cyber-physical convergence in production system creates massive amounts of industrial data that needs to be mined and analysed in real-time. To facilitate such real-time control, this research proposes a hierarchical and distributed architecture to solve the dynamic flexible job shop scheduling problem. Double Deep Q-Network algorithm is used to train the scheduling agents, to capture the relationship between production information and scheduling objectives, and make real-time scheduling decisions for a flexible job shop with constant job arrivals. Specialised state and action representations are proposed to handle the variable specification of the problem in dynamic scheduling. Additionally, a surrogate reward-shaping technique to improve learning efficiency and scheduling effectiveness is developed. A simulation study is carried out to validate the performance of the proposed approach under different scenarios. Numerical results show that not only does the proposed approach deliver superior performance as compared to existing scheduling strategies, its advantages persist even if the manufacturing system configuration changes.
ISSN: 0020-7543
DOI: 10.1080/00207543.2022.2058432
Rights: © 2022 Informa UK Limited, trading as Taylor & Francis Group. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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