Integrated order batching and vehicle routing operations in grocery retail – A General Adaptive Large Neighborhood Search algorithm

2020 ◽  
Author(s):  
Heinrich Kuhn ◽  
Daniel Schubert ◽  
Andreas Holzapfel
Keyword(s):  
Vehicle Routing ◽  
Search Algorithm ◽  
Neighborhood Search ◽  
Large Neighborhood Search ◽  
Adaptive Large Neighborhood Search ◽  
Order Batching ◽  
Large Neighborhood ◽  
Neighborhood Search Algorithm

scholarly journals An Adaptive Large Neighborhood Search Algorithm for the Satellite Data Transmission Scheduling Problem

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Yingguo Chen ◽  
Ming Chen ◽  
Jun Wen ◽  
Yingwu Chen ◽  
Wen Xiang
Keyword(s):  
Satellite Data ◽  
Data Transmission ◽  
Search Algorithm ◽  
Neighborhood Search ◽  
Transmission Scheduling ◽  
Large Neighborhood Search ◽  
Adaptive Large Neighborhood Search ◽  
Large Neighborhood ◽  
Ground Station ◽  
Neighborhood Search Algorithm

Satellite establishes a satellite ground station to satellite link with a ground station to complete data transmission. However, in China, satellite ground stations only exist within the country. With the rapid increase in the number of satellites, effectively dispatching satellite communications and maximizing the performance of ground stations are necessary. We propose a heuristic adaptive large neighborhood search algorithm (H-ALNS) to solve the satellite data transmission scheduling (SDTS) problem. The algorithm includes two heuristic rules for generating the initial scheme and the conflict reduction process after updating the neighborhood. A heuristic task assignment method is used to select the execution time window and position for the task sequence. The adaptive operator is used to update the delete operator and insert operator weights into the H-ALNS. The quality of the generated planning scheme improved through continuous neighborhood destruction and repair. Through experimental analysis, the algorithm we propose is feasible for solving SDTS problems and surpasses the planning results acquired using other comparison algorithms. The H-ALNS has good prospects for practical engineering applications.

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