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Imitation Learning Enabled Task Scheduling for Online Vehicular Edge Computing

Wang, Xiaojie ; Ning, Zhaolong ; Guo, Song ; Wang, Lei

IEEE transactions on mobile computing, 2022-02, Vol.21 (2), p.598-611 [Periódico revisado por pares]

IEEE

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  • Título:
    Imitation Learning Enabled Task Scheduling for Online Vehicular Edge Computing
  • Autor: Wang, Xiaojie ; Ning, Zhaolong ; Guo, Song ; Wang, Lei
  • Assuntos: Delays ; Heuristic algorithms ; imitation learning ; Mobile computing ; online training ; Processor scheduling ; Servers ; Task analysis ; task scheduling ; Vehicle dynamics ; Vehicular edge computing
  • É parte de: IEEE transactions on mobile computing, 2022-02, Vol.21 (2), p.598-611
  • Descrição: Vehicular edge computing (VEC) is a promising paradigm based on the Internet of vehicles to provide computing resources for end users and relieve heavy traffic burden for cellular networks. In this paper, we consider a VEC network with dynamic topologies, unstable connections and unpredictable movements. Vehicles inside can offload computation tasks to available neighboring VEC clusters formed by onboard resources, with the purpose of both minimizing system energy consumption and satisfying task latency constraints. For online task scheduling, existing researches either design heuristic algorithms or leverage machine learning, e.g., deep reinforcement learning (DRL). However, these algorithms are not efficient enough because of their low searching efficiency and slow convergence speeds for large-scale networks. Instead, we propose an imitation learning enabled online task scheduling algorithm with near-optimal performance from the initial stage. Specially, an expert can obtain the optimal scheduling policy by solving the formulated optimization problem with a few samples offline. For online learning, we train agent policies by following the expert's demonstration with an acceptable performance gap in theory. Performance results show that our solution has a significant advantage with more than 50 percent improvement compared with the benchmark.
  • Editor: IEEE
  • Idioma: Inglês
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