2012 ©
             Publication
Journal Publication
Title of Article Hybrid differential evolution and particle swarm optimization for Multi-visit and Multi-period workforce scheduling and routing problems 
Date of Acceptance 31 March 2022 
Journal
     Title of Journal Computers and Electronics in Agriculture 
     Standard ISI 
     Institute of Journal 2022 Elsevier B.V. All rights reserved. 
     ISBN/ISSN 1681699 
     Volume 2022 
     Issue 197 
     Month
     Year of Publication 2022 
     Page  
     Abstract This research proposed an optimization method (Hybrid Differential Evolution and Particle Swarm Optimization, HDEPSO) using a solution technique based on two well-known techniques, Differential Evolution (DE) and Particle Swarm Optimization (PSO), to tackle a multi-visit and multi-period workforce scheduling and routing problem (MMWSRP) in field service operation of a sugarcane mill company in Thailand. The HDEPSO can be used for planning of routes and maintenance work for each sugarcane harvester to be provided by service teams of mechanical, hydraulic, and electrical technicians. The members of the service teams will be determined according to their skills and skill levels and service routes for each individual service team so that the operation cost is minimized. At first, mixed integer programing was used to determine the best solution. This technique is, however, not suitable for large-size problems. A HDEPSO was therefore developed to solve the MMWSRP and then tested against the mixed integer programing for small-size problems and it was found that both methods were equally effective. However, for larger-size problems, shortcomings of the mixed-integer technique became obvious whereas the HDEPSO was much more advantageous. The HDEPSO was also tested against the DE and PSO. The computational results show that the objective value of the proposed method was decreased by 4.94% and 7.45% compared with the DE and the PSO, respectively. 
     Keyword Hybrid Differential Evolution and Particle Swarm Optimization, Workforce Scheduling and Routing Problem, Sugarcane Harvester Maintenance 
Author
617040001-9 Mr. VORAVEE PUNYAKUM [Main Author]
Engineering Doctoral Degree

Reviewing Status มีผู้ประเมินอิสระ 
Status ตีพิมพ์แล้ว 
Level of Publication นานาชาติ 
citation true 
Part of thesis true 
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