Genetic Algorithm for Traveling Salesman Problem with Modified Cycle Crossover Operator.

Research paper by Abid A Hussain, Yousaf Shad YS Muhammad, M M Nauman Sajid, Ijaz I Hussain, Alaa A Mohamd Shoukry, Showkat S Gani

Indexed on: 07 Dec '17Published on: 07 Dec '17Published in: Computational intelligence and neuroscience


Genetic algorithms are evolutionary techniques used for optimization purposes according to survival of the fittest idea. These methods do not ensure optimal solutions; however, they give good approximation usually in time. The genetic algorithms are useful for NP-hard problems, especially the traveling salesman problem. The genetic algorithm depends on selection criteria, crossover, and mutation operators. To tackle the traveling salesman problem using genetic algorithms, there are various representations such as binary, path, adjacency, ordinal, and matrix representations. In this article, we propose a new crossover operator for traveling salesman problem to minimize the total distance. This approach has been linked with path representation, which is the most natural way to represent a legal tour. Computational results are also reported with some traditional path representation methods like partially mapped and order crossovers along with new cycle crossover operator for some benchmark TSPLIB instances and found improvements.