A heuristic framework for a class of vehicle routing problems
We propose GenericILS, a general-purpose heuristic framework for generating high-quality upper bounds for Vehicle Routing Problems whose pricing subproblems are modeled, in column-generation-based exact algorithms, as resource-constrained shortest path problems described through Resource Extension Functions (REFs), the standard device for encoding constraints in branch-and-price algorithms. GenericILS reuses REFs implemented for the exact method, without a … Read more