<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "The vehicle routing problem with service level constraints"^^ . "We consider a vehicle routing problem which seeks to minimize cost subject to service level constraints on several groups of deliveries. This problem captures some essential challenges faced by a logistics provider which operates transportation services for a limited number of partners and should respect contractual obligations on service levels. The problem also generalizes several important classes of vehicle routing problems with profits. To solve it, we propose a compact mathematical formulation, a branch-and-price algorithm, and a hybrid genetic algorithm with population management, which relies on problem-tailored solution representation, crossover and local search operators, as well as an adaptive penalization mechanism establishing a good balance between service levels and costs. Our computational experiments show that the proposed heuristic returns very high-quality solutions for this difficult problem, matches all optimal solutions found for small and medium-scale benchmark instances, and improves upon existing algorithms for two important special cases: the vehicle routing problem with private fleet and common carrier, and the capacitated profitable tour problem. The branch-and-price algorithm also produces new optimal solutions for all three problems."^^ . "2017" . . . "Elsevier"^^ . . . "European Journal of Operational Research"^^ . . . "03772217" . . . . . . . . . . . . . . . . "Thibaut"^^ . "Vidal"^^ . "Thibaut Vidal"^^ . . "Rafael"^^ . "Martinelli"^^ . "Rafael Martinelli"^^ . . "Minh Hoang"^^ . "Ha"^^ . "Minh Hoang Ha"^^ . . "Teobaldo"^^ . "Bulhões"^^ . "Teobaldo Bulhões"^^ . . "Instituto de Computação, Universidade Federal Fluminense, Niterói, Brazil"^^ . . . "University of Engineering and Technology, Vietnam National University, Hanoi, Viet Nam"^^ . . . "Departamento de Engenharia Industrial, Pontifícia Universidade Católica do Rio de Janeiro, Brazil"^^ . . . "Departamento de Informática, Pontifícia Universidade Católica do Rio de Janeiro, Brazil"^^ . . . . . . . "The vehicle routing problem with service level constraints (PDF)"^^ . . . "VRP with service level constraints.pdf"^^ . . "HTML Summary of #2574 \n\nThe vehicle routing problem with service level constraints\n\n" . "text/html" . . . "Information Technology (IT)"@en . . . "ISI-indexed journals"@en . .