Adaptive Population-based Simulated Annealing for Uncertain Resource Constrained Job Scheduling

• URL: http://arxiv.org/abs/2210.17036v1
• Date: Mon, 31 Oct 2022 03:20:41 GMT
• Title: Adaptive Population-based Simulated Annealing for Uncertain Resource Constrained Job Scheduling
• Authors: Dhananjay Thiruvady, Su Nguyen, Yuan Sun, Fatemeh Shiri, Nayyar Zaidi, Xiaodong Li
• Abstract summary: Resource constrained job scheduling (RCJS) is a hard optimisation problem that cannot be solved efficiently with existing optimisation methods. This study proposes an adaptive population-based simulated algorithm that can overcome the limitations of existing methods for RCJS with uncertainty. The results show that the proposed algorithm outperforms existing methods across a wide range of benchmark RCJS instances and uncertainty levels.
• Score: 6.2364674720444855
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Transporting ore from mines to ports is of significant interest in mining supply chains. These operations are commonly associated with growing costs and a lack of resources. Large mining companies are interested in optimally allocating their resources to reduce operational costs. This problem has been previously investigated in the literature as resource constrained job scheduling (RCJS). While a number of optimisation methods have been proposed to tackle the deterministic problem, the uncertainty associated with resource availability, an inevitable challenge in mining operations, has received less attention. RCJS with uncertainty is a hard combinatorial optimisation problem that cannot be solved efficiently with existing optimisation methods. This study proposes an adaptive population-based simulated annealing algorithm that can overcome the limitations of existing methods for RCJS with uncertainty including the premature convergence, the excessive number of hyper-parameters, and the inefficiency in coping with different uncertainty levels. This new algorithm is designed to effectively balance exploration and exploitation, by using a population, modifying the cooling schedule in the Metropolis-Hastings algorithm, and using an adaptive mechanism to select perturbation operators. The results show that the proposed algorithm outperforms existing methods across a wide range of benchmark RCJS instances and uncertainty levels. Moreover, new best known solutions are discovered for all but one problem instance across all uncertainty levels.

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