Aritra Pal

MSEA.jl: A Multi-Stage Exact Algorithm for Bi-objective Pure Integer Linear Programming in Julia

  • Hadi Charkhgard
  • Aritra Pal
    • Categories Integer Programming, Multi-Criteria Optimization Tags , , ,

    We present a new exact method for bi-objective pure integer linear programming, the so-called Multi-Stage Exact Algorithm (MSEA). The method combines several existing exact and approximate algorithms in the literature to compute the entire nondominated frontier of any bi-objective pure integer linear program. Each algorithm available in MSEA has multiple versions in the literature. Hence, … Read more

    FPBH.jl: A Feasibility Pump Based Heuristic for Multi-objective Mixed Integer Linear Programming in Julia

  • Hadi Charkhgard
  • Aritra Pal
    • Categories (Mixed) Integer Linear Programming, Multi-Criteria Optimization, Optimization Software and Modeling Systems Tags , , , ,

    Feasibility pump is one of the successful heuristic solution approaches developed almost a decade ago for computing high-quality feasible solutions of single-objective integer linear programs, and it is implemented in exact commercial solvers such as CPLEX and Gurobi. In this study, we present the first Feasibility Pump Based Heuristic (FPBH) approach for approximately generating nondominated … Read more

    Free-Floating Bike Sharing: Solving Real-life Large-scale Static Rebalancing Problems

  • Aritra Pal
  • Yu Zhang
    • Categories Civil and Environmental Engineering, Meta Heuristics, Transportation Tags , , , ,

    Free-floating bike sharing (FFBS) is an innovative bike sharing model. FFBS saves on start-up cost, in comparison to station-based bike sharing (SBBS), by avoiding construction of expensive docking stations and kiosk machines. FFBS prevents bike theft and offers significant opportunities for smart management by tracking bikes in real-time with built-in GPS. However, like SBBS, the … Read more