Solving the multi-objective Hamiltonian cycle problem using a Branch-and-Fix based algorithm
2022 (English)In: Journal of Computational Science, ISSN 1877-7503, E-ISSN 1877-7511, Vol. 60, article id 101578Article in journal (Refereed) Published
Abstract [en]
The Hamiltonian cycle problem consists of finding a cycle in a given graph that passes through every single vertex exactly once, or determining that this cannot be achieved. In this investigation, a graph is considered with an associated set of matrices. The entries of each of the matrix correspond to a different weight of an arc. A multi-objective Hamiltonian cycle problem is addressed here by computing a Pareto set of solutions that minimize the sum of the weights of the arcs for each objective. Our heuristic approach extends the Branch-and-Fix algorithm, an exact method that embeds the problem in a stochastic process. To measure the efficiency of the proposed algorithm, we compare it with a multi-objective genetic algorithm in graphs of a different number of vertices and density. The results show that the density of the graphs is critical when solving the problem. The multi-objective genetic algorithm performs better (quality of the Pareto sets) than the proposed approach in random graphs with high density; however, in these graphs it is easier to find Hamiltonian cycles, and they are closer to the multi-objective traveling salesman problem. The results reveal that, in a challenging benchmark of Hamiltonian graphs with low density, the proposed approach significantly outperforms the multi-objective genetic algorithm.
Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 60, article id 101578
Keywords [en]
Graph theory, Multi-objective optimization, Discrete optimization problems, Hamiltonian cycle problem, Branching algorithm
National Category
Discrete Mathematics Computer Sciences
Research subject
Operation and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-89825DOI: 10.1016/j.jocs.2022.101578ISI: 000820277900006Scopus ID: 2-s2.0-85124240005OAI: oai:DiVA.org:ltu-89825DiVA, id: diva2:1646479
Note
Validerad;2022;Nivå 2;2022-03-22 (hanlid);
Funder: Spanish Ministry of Science and Innovation (TIN2016-78365-R, PID2019-104966GB-I00); Basque Government (KK-2020/00049, IT1244-19, ELKARTEK)
2022-03-222022-03-222022-07-15Bibliographically approved