Martin Stølevik

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Nurse rostering is the process of creating a plan for nurse working hours over a given time horizon. This problem, most variants of which are NP-hard, has been studied extensively for many years. Still, practical nurse rostering is mostly done manually, often by highly qualified health care personnel. This underlines the need to address the challenges of(More)
The purpose of this paper is to describe industrial aspects of combined fleet composition and routing in maritime and road-based transportation, and to present the current status of research in the form of a comprehensive literature review. With a backdrop of industrial aspects, a categorized survey of relevant literature since the first published papers in(More)
Helsgaun’s implementation of the Lin-Kernighan algorithm (LKH) is an effective heuristic solver for the Traveling Salesman Problem (TSP). The report presents an extension of LKH to support time windows, i.e., to a solver for the TSPTW. The new solver is referred to as LKHTW. SINTEF’s solver for rich Vehicle Routing Problems, Spider, has been integrated with(More)
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