A hybrid algorithm combining glowworm swarm optimization and complete 2-opt algorithm for spherical travelling salesman problems

•The Traveling Salesman Problem (TSP) is one of the most well-known combinatorial optimization problems.•This paper we extend the two-dimensional TSP to the spherical TSP in which all points (cities) and paths (solutions) are on the surface of a sphere.•A hybrid algorithm based on the glowworm swarm...

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Veröffentlicht in:Applied soft computing Jg. 58; S. 104 - 114
Hauptverfasser: Chen, Xin, Zhou, Yongquan, Tang, Zhonghua, Luo, Qifang
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier B.V 01.09.2017
Schlagworte:
Approximate algorithm
Complete 2-opt algorithm
Glowworm swarm optimization
Spherical TSP
Travelling salesman problem
Travelling salesman problem
Approximate algorithm
Spherical TSP
Complete 2-opt algorithm
Glowworm swarm optimization
ISSN:1568-4946, 1872-9681
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Zusammenfassung:•The Traveling Salesman Problem (TSP) is one of the most well-known combinatorial optimization problems.•This paper we extend the two-dimensional TSP to the spherical TSP in which all points (cities) and paths (solutions) are on the surface of a sphere.•A hybrid algorithm based on the glowworm swarm optimization (GSO) and the complete 2-opt algorithm is proposed.•The experiment results show that the proposed algorithm has a better performance than the basic GSO in solving the spherical TSP. The Travelling Salesman Problem (TSP) is one of the most well-known combinatorial optimization problems and has attracted a lot of interests from researchers. Many studies have proposed various methods for solving the two-dimensional TSP. In this study, we extend the two-dimensional TSP to the three-dimensional TSP, namely the spherical TSP in which all points (cities) and paths (solutions) are on the surface of a sphere. A hybrid algorithm based on the glowworm swarm optimization (GSO) and the complete 2-opt algorithm is proposed, in which the carriers of the luciferin are transformed from glowworms to edges between cities, and the probabilistic formula and the luciferin updating formula are modified. In addition, the complete 2-opt algorithm is performed to optimize the selected optimal routes every few iterations. Numerical experimental results show that the proposed algorithm has a better performance than the basic GSO in solving the spherical TSP. Meanwhile, the complete 2-opt algorithm can speed up the convergence rate.
ISSN:1568-4946
1872-9681
DOI:10.1016/j.asoc.2017.04.057