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A hub site selection and distribution optimization method for a multi-distribution express hub network
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A distribution optimization and hub technology, applied in data processing applications, forecasting, logistics, etc., can solve problems such as low efficiency, slow sorting speed, and high cost
Inactive Publication Date: 2019-06-04
罗海洋
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[0004] Aiming at the deficiencies of the prior art, the present invention provides a hub site selection and allocation optimization method for a multi-distribution express hub-and-spoke network, which solves the problem that the slower the sorting speed and the lower the efficiency of the existing hub-and-spoke network hub site selection and allocation method The lower the cost, the higher the cost and the longer the unit sorting time
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Embodiment 1
[0038] The present invention provides such Figure 1-2 A hub location and distribution optimization method for multi-distribution express hub-and-spoke network is shown, including the express network G= , node set N=H M, there is at least 1 hub on the express delivery path between any two points, and no more than 2 hubs, the nodes on the path can only be 2, 3, 4, any two nodes i, j The express business between N is transported along the path in the network G, and the entire express delivery path can be determined by the matrix to represent, where p ij Indicates the second node on the path from node i to node j, represented by The path L from node i to node j can be derived ij, , and then repeatedly call the recursive formula L ij = / / Lp ij j can;
[0039] Express volume q between nodes ij , i, j=1, 2, ..., n, the node has n k The unit sorting fee for each sorting direction is s k , , section has a fixed fee of f uv , the unit variable cost is c uv , th...
Embodiment 2
[0056] The present invention provides such Figure 1-2 A hub location and distribution optimization method for multi-distribution express hub-and-spoke network is shown, including the express network G= , characterized in that: node set N=H M, there is at least 1 hub on the express delivery path between any two points, and no more than 2 hubs, the nodes on the path can only be 2, 3, 4, any two nodes i, j The express business between N is transported along the path in the network G, and the entire express delivery path can be determined by the matrix to represent, where p ij Indicates the second node on the path from node i to node j, represented by The path L from node i to node j can be derived ij, , and then repeatedly call the recursive formula L ij = / / Lp ij j can;
[0057] Express volume q between nodes ij , i, j=1, 2, ..., n, the node has n k The unit sorting fee for each sorting direction is s k , , section has a fixed fee of f uv , the unit vari...
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Abstract
The invention discloses a hub site selection and distribution optimization method for a multi-distribution express shaft spoke network. The node set is shown in the description, at least one pivot butno more than two pivots is arranged on the express delivery path between any two points; only 2, 3 and 4 nodes are possibly arranged on the path, express services between any two nodes shown in the description are transmitted along the pth in the network G, the whole express delivery path can be represented by a matrix (please see the formula in the specification), and pij represents a second node on the path from the node i to the node j. According to the invention, comprehensive optimization is carried out as a unified whole; Under the constraint of transportation operation time budget, a combined simulated annealingalgorithm based on conditional shortest circuit is designed with the goal of minimizing express network transportation cost, transit cost and sorting cost, calculation andanalysis are carried out on examples, and the effectiveness of the model and the algorithm is verified, the enterprise operation efficiency is improved, and the express enterprise operation cost is reduced.
Description
technical field [0001] The invention relates to the related technical field of express delivery network, in particular to a hub site selection and distribution optimization method for a multi-distribution express delivery hub-and-spoke network. Background technique [0002] The site selection and distribution scheme of express network hubs is directly related to the operating cost and service level of the express network, which is the basis for the operation of express companies. In the design of express network, the locations of all nodes are known in advance, but not Knowing whether they are hubs or distribution centers, except for the distribution and distribution business exchanges with the lower nodes within the jurisdiction, the distribution center can only express express directly with the assigned hub, and cannot communicate directly with other distribution centers. Express delivery, and the express transportation between two nodes can only be transferred through the...
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