• A matheuristic for the inventory routing problem with divisible pickup and delivery 

      Aastveit, Einar; Staver, Tuva Toftdahl; Vadseth, Simen Tung (Master thesis, 2018)
      The management of reverse logistics has received growing attention in recent years due to new regulations, environmental aspects and an eagerness to obtain further operational benefits. Reverse logistics can be modeled as ...
    • A Memetic Algorithm With Optimal Quantity Assignments for the Fish Feed Maritime Inventory Routing Problem 

      Bjelland, Anders; Borgen, Aksel; Wold, Sjur (Master thesis, 2022)
      Oppdrettslaks er en av Norges mest verdifulle eksportvarer. Mindre kjent er fiskefôrindustrien som daglig produserer og distribuerer omtrent 5.000 tonn fôr til anlegg langs hele norskekysten. Lave profittmarginer gjør ...
    • A branch-and-cut embedded matheuristic for the inventory routing problem 

      Skålnes, Jørgen; Vadseth, Simen Tung; Andersson, Carl Henrik; Stålhane, Magnus (Peer reviewed; Journal article, 2023)
      This paper presents an improved version of the solution method that won the inventory routing problem track of the DIMACS Implementation Challenge. The solution method is a branch-and-cut embedded matheuristic where a ...
    • The Fish Feed Production Routing Problem 

      Brekkå, Ivar; Randøy, Solveig; Fagerholt, Kjetil; Thun, Kristian; Vadseth, Simen Tung (Peer reviewed; Journal article, 2022)
      This paper introduces the fish feed production routing problem (FFPRP) faced by Norwegian salmon feed producers. The FFPRP is comprised of a production scheduling problem and a rich vehicle routing problem (VRP) and thus ...
    • An iterative matheuristic for the inventory routing problem 

      Vadseth, Simen Tung; Andersson, Henrik; Stålhane, Magnus (Peer reviewed; Journal article, 2021)
      The paper considers the inventory routing problem with the Maximum Level replenishment policy. Here, the supplier is in charge of replenishing goods to a number of customers and can decide when, and in what order, these ...
    • A multi-start route improving matheuristic for the production routing problem 

      Vadseth, Simen Tung; Andersson, Henrik; Stålhane, Magnus; Chitsaz, Masoud (Peer reviewed; Journal article, 2023)
      This paper considers the multi-vehicle production routeing problem with a maximum-level replenishment policy. This is a well-established problem within vendor managed inventory where production, inventory and routeing ...
    • New Mathematical Programming-based Algorithms for Solving Rich Vehicle Routing Problems 

      Vadseth, Simen Tung (Doctoral theses at NTNU;2023:370, Doctoral thesis, 2023)
      This thesis addresses rich vehicle routing problems (VRPs) and introduces innovative algorithms for solving them. VRPs are vital in logistics, optimizing routes for the delivery of goods. Rich VRPs which incorporate ...