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Learning-based scheduling of flexible manufacturing systems using ensemble methods

Priore, Paolo; Ponte, Borja; Puente, Javier and Gómez, Alberto (2018). Learning-based scheduling of flexible manufacturing systems using ensemble methods. Computers & Industrial Engineering, 126 pp. 282–291.

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Dispatching rules are commonly applied to schedule jobs in Flexible Manufacturing Systems (FMSs). However, the suitability of these rules relies heavily on the state of the system; hence, there is no single rule that always outperforms the others. In this scenario, machine learning techniques, such as support vector machines (SVMs), inductive learning-based decision trees (DTs), backpropagation neural networks (BPNs), and case based-reasoning (CBR), offer a powerful approach for dynamic scheduling, as they help managers identify the most appropriate rule in each moment. Nonetheless, different machine learning algorithms may provide different recommendations. In this research, we take the analysis one step further by employing ensemble methods, which are designed to select the most reliable recommendations over time. Specifically, we compare the behaviour of the bagging, boosting, and stacking methods. Building on the aforementioned machine learning algorithms, our results reveal that ensemble methods enhance the dynamic performance of the FMS. Through a simulation study, we show that this new approach results in an improvement of key performance metrics (namely, mean tardiness and mean flow time) over existing dispatching rules and the individual use of each machine learning algorithm.

Item Type: Journal Item
ISSN: 0360-8352
Academic Unit/School: Faculty of Business and Law (FBL) > Business > Department for People and Organisations
Faculty of Business and Law (FBL) > Business
Faculty of Business and Law (FBL)
Item ID: 56756
Depositing User: ORO Import
Date Deposited: 26 Sep 2018 14:58
Last Modified: 02 May 2019 11:25
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