Cyclic-order neighborhoods with application to the vehicle routing problem with stochastic demand
by Justin C. Goodsona, Jeffrey W. Ohlmann, and Barrett W. Thomas
We examine neighborhood structures for heuristic search applicable to a general class of vehicle routing problems (VRPs). Our methodology utilizes a cyclic-order solution encoding, which maps a permutation of the customer set to a collection of many possible VRP solutions. We identify the best VRP solution in this collection via a polynomial-time algorithm from the literature. We design neighborhoods to search the space of cyclic orders. Utilizing a simulated annealing framework, we demonstrate the potential of cyclic-order neighborhoods to facilitate the discovery of high quality a priori solutions for the vehicle routing problem with stochastic demand (VRPSD). Without tailoring our solution procedure to this specific routing problem, we are able to match 16 of 19 known optimal VRPSD solutions. We also propose an updating procedure to evaluate the neighbors of a current solution and demonstrate its ability to reduce the computational expense of our approach.Keywords: Heuristics; Logistics; Cyclic-order neighborhoods; Stochastic vehicle routing; Simulated annealing
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title = "Cyclic-order neighborhoods with application to the vehicle routing problem
with stochastic demand",
author = "Justin C. Goodson and Jeffrey W. Ohlmann and Barrett W. Thomas",
journal = "European Journal of Operational Research",
volume = "217",
number = "2",
pages = "312 - 323",
year = "2012",
doi = "10.1016/j.ejor.2011.09.023"