Reiter, Peter; Gutjahr, Walter J. Exact hybrid algorithms for solving a bi-objective vehicle routing problem. (English) Zbl 1245.90010 CEJOR, Cent. Eur. J. Oper. Res. 20, No. 1, 19-43 (2012). Summary: The paper investigates a capacitated vehicle routing problem with two objectives: (1) minimization of total travel cost and (2) minimization of the length of the longest route. We present algorithmic variants for the exact determination of the Pareto-optimal solutions of this bi-objective problem. Our approach is based on the adaptive \(\varepsilon\)-constraint method. For solving the resulting single-objective subproblems, we apply a branch-and-cut technique, using (among others) a novel implementation of Held-Karp-type bounds. Incumbent solutions are generated by means of a single-objective genetic algorithm and, alternatively, by the multi-objective NSGA-II algorithm. Experimental results for a benchmark of 54 test instances from the TSPLIB are reported. Cited in 7 Documents MSC: 90B06 Transportation, logistics and supply chain management 90C27 Combinatorial optimization 90C29 Multi-objective and goal programming 90B10 Deterministic network models in operations research 90C57 Polyhedral combinatorics, branch-and-bound, branch-and-cut Keywords:capacitated vehicle routing problem; distance constraints; multiobjective combinatorial optimization; branch-and-cut; TSPLIB Software:CVRPSP; VRP; CVRPSEP; weightedHypervolume PDF BibTeX XML Cite \textit{P. Reiter} and \textit{W. J. Gutjahr}, CEJOR, Cent. Eur. J. Oper. Res. 20, No. 1, 19--43 (2012; Zbl 1245.90010) Full Text: DOI References: [1] Achuthan NR, Caccetta L, Hill SP (1996) A new subtour elimination constraint for the vehicle routing problem. Eur J Oper Res 91: 573–586 · Zbl 0924.90057 [2] Ascheuer N, Fischetti M, Grötschl M (2000) A polyhedral study of the asymmetric traveling salesman problem with time windows. 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