Enhanced Ant Colony Optimization with Four Vertices and Three Lines Inequality for Traveling Salesman Probelm
Traveling salesman problem (TSP) becomes hard when the number of cities and routes are large. The ant colony optimization method (ACO) is enhanced with the four vertices and three lines inequality to search the optimal Hamiltonian circuit (OHC). The four vertices and three lines inequality is the constraint of the local optimal Hamiltonian paths (LOHP) and all the LOHPs in the OHC conform to the inequality. The ACO is used to search the near OHCs. The local Hamiltonian paths in the near OHCs are altered into the better near OHCs based on the four vertices and three lines inequality. The enhanced ACO (EACO) is tested with TSP instances. The results show that the better near OHC are computed with the EACO than that with the ACO, and the computation cycles of convergence of EACO is smaller than that of the ACO under the same preconditions.
Traveling salesman problem ant colony optimization four vertices and three lines inequality
Yong Wang De Tian
School of Renewable Energy North China Electric Power University Beijing, China
国际会议
杭州
英文
209-212
2012-10-28（万方平台首次上网日期，不代表论文的发表时间）