Abstract
In this paper we propose an efficient heuristic for the Vehicle Routing Problem on Trees (TVRP). An initial solution is constructed with a greedy algorithm based on the Depth-First Search (DFS) approach. To optimize initial solutions obtained by our DFS heuristic, Ruin-and-Recreate (RR) method is then applied. For diversification purposes a randomization mechanism is added to the construction of initial solutions and DFS+RR algorithm is executed multiple times until the best found solution stops changing. The results of our approach are compared with the solutions obtained by the exact model of Chandran & Raghavan (2008). The computational experiments show that the suggested heuristic is fast and finds solutions which differ from optimal ones less than by 1% in average.
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The paper is prepared within the framework of the Basic Research Program at the National Research University Higher School of Economics (NRU HSE).
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Utkina, I., Bukanova, O., Batsyn, M.V. (2020). Fast Heuristic for Vehicle Routing Problem on Trees. In: Kochetov, Y., Bykadorov, I., Gruzdeva, T. (eds) Mathematical Optimization Theory and Operations Research. MOTOR 2020. Communications in Computer and Information Science, vol 1275. Springer, Cham. https://doi.org/10.1007/978-3-030-58657-7_30
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DOI: https://doi.org/10.1007/978-3-030-58657-7_30
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