Zulqarnain Haider

Bi-objective autonomous vehicle repositioning problem with travel time uncertainty

  • Hadi Charkhgard
  • Zulqarnain Haider
  • Mahdi Takalloo
    • Categories Multi-Criteria Optimization, Stochastic Programming, Transportation Tags , ,

    We study the problem of repositioning autonomous vehicles in a shared mobility system in order to simultaneously minimize the unsatisfied demand and the total operating cost. We first present a mixed integer linear programming formulation for the deterministic version of the problem, and based on that we develop an extended formulation that is easier to … Read more

    A Robust Optimization Approach for Solving Problems in Conservation Planning

  • Hadi Charkhgard
  • Zulqarnain Haider
  • Changhyun Kwon
    • Categories (Mixed) Integer Linear Programming, Applications - OR and Management Sciences, Robust Optimization

    In conservation planning, the data related to size, growth and diffusion of populations is sparse, hard to collect and unreliable at best. If and when the data is readily available, it is not of sufficient quantity to construct a probability distribution. In such a scenario, applying deterministic or stochastic approaches to the problems in conservation … Read more