Elena Fernandez

The Undirected Team Orienteering Arc Routing Problem: Formulations, Valid Inequalities, and Exact Algorithms

  • Wenjin Yan
  • Elena Fernandez
  • Ivana Ljubić
    • Categories Branch and Cut Algorithms, Combinatorial Optimization, Network Optimization Tags , , ,

    We address the Undirected Team Orienteering Arc Routing Problem (UTOARP). In this problem, demand is placed at some edges of a given undirected graph and served demand edges produce a profit. Feasible routes must start and end at a given depot and there is a time limit constraint on the maximum duration of each route. … Read more

    Arc routing with electric vehicles: dynamic charging and speed-dependent energy consumption

  • Elena Fernandez
  • Markus Leitner
  • Ivana Ljubić
  • Mario Ruthmair
    • Categories (Mixed) Integer Linear Programming, Branch and Cut Algorithms, Production and Logistics Tags , , , , , ,

    Concerns about greenhouse gas emissions and government regulations foster the use of electric vehicles. Several recently published articles study the use of electric vehicles (EVs) in node-routing problems. In contrast, this article considers EVs in the context of arc routing while also addressing practically relevant aspects that have not been addressed sufficiently so far. These … Read more