Abstract
The Travelling Thief Problem is a complex logistics planning problem composed of the Travelling Salesman Problem and the Knapsack Problem. The Bi-objective TTP needs to optimize the two goals of the time spent on the journey and the total value of the item picked up. There are two dimensions to be considered in the solution space, which is more difficult to deal with. The original solution method has some limitations. This paper proposes a MOEA/D-ACO algorithm based on finite pheromone weights, which constructs distance-related weights when pheromone weights are initialized and adjusts the weights to improve the effect and efficiency of the ant’s search path. Then a new weighted Tchebycheff aggregation method was designed. By adjusting the parameters to control the proportion of the two aggregation methods, the advantages of weighted sum method and Tchebycheff aggregation method are integrated to improve the quality of the algorithm. Then we introduced the method of dynamic adjustment of ant neighbor number and adaptive mutation operator to improve the convergence speed and the quality of the solution. The experiment result indicates that our algorithm has competitive performance comparing with the well-known optimization algorithms GA£¬ISA, ISA-Local, and NSGA-II on Bi-objective TTP benchmark datasets.
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Acknowledgment
This work was partially supported by the Natural Science Foundation of Guangdong Province of China (Grant No. 2020A1515010691), Science and Technology Project of Guangdong Province of China (Grant No. 2018A0124), National Natural Science Foundation of China (Grant Nos. 61573157 and 61703170), and Guangdong Provincial Key Laboratory of Food Quality and Safety (Grant No. 2020B1212060059).The authors also gratefully acknowledge the reviewers for their helpful comments and suggestions that helped to improve the presentation.
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Yang, L., Jia, X., Xu, R., Cao, J. (2021). An MOEA/D-ACO Algorithm with Finite Pheromone Weights for Bi-objective TTP. In: Tan, Y., Shi, Y., Zomaya, A., Yan, H., Cai, J. (eds) Data Mining and Big Data. DMBD 2021. Communications in Computer and Information Science, vol 1453. Springer, Singapore. https://doi.org/10.1007/978-981-16-7476-1_40
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