대한산업공학회지 (Journal of Korean Institute of Industrial Engineers)

  • 제30권2호
  • /
  • Pages.120-129
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  • 2004
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  • 1225-0988(pISSN)
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  • 2234-6457(eISSN)
대한산업공학회 (Korean Institute of Industrial Engineers)
권호 표지

외판원문제에서 국지해를 탈출하기 위한 비용완화법

Cost Relaxation Method to Escape from a Local Optimum of the Traveling Salesman Problem

  • Kwon, Sang-Ho (Department of Industrial Engineering, Hanyang University) ;
  • Kim, Sung-Min (Department of Industrial Engineering, Hanyang University) ;
  • Kang, Maing-Kyu (Department of Industrial Engineering, Hanyang University)
  • 발행 : 2004.06.30
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초록

This paper provides a simple but effective method, cost relaxation to escape from a local optimum of the traveling salesman problem. We would find a better solution if we repeat a local search heuristic at a different initial solution. To find a different initial solution, we use the cost relaxation method relaxing the cost of arcs. We used the Lin-Kernighan algorithm as a local search heuristic. In experimental result, we tested large instances, 30 random instances and 34 real world instances. In real-world instances, we found average 0.17% better above the optimum solution than the Concorde known as the chained Lin-Kernighan. In clustered random instances, we found average 0.9% better above the optimum solution than the Concorde.

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참고문헌

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