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With the rapid development of air transportation in recent years, airport operations have attracted a lot of attention. Among them, airport gate assignment problem (AGAP) has become a research hotspot. However, the real-time AGAP algorithm is still an open issue. In this study, a deep reinforcement learning based AGAP(DRL-AGAP) is proposed. The optimization object is to maximize the rate of flights assigned to fixed gates. The real-time AGAP is modeled as a Markov decision process (MDP). The state space, action space, value and rewards have been defined. The DRL-AGAP algorithm is evaluated via simulation and it is compared with the flight pre-assignment results of the optimization software Gurobiand Greedy. Simulation results show that the performance of the proposed DRL-AGAP algorithm is close to that of pre-assignment obtained by the Gurobi optimization solver. Meanwhile, the real-time assignment ability is ensured by the proposed DRL-AGAP algorithm due to the dynamic modeling and lower complexity. Copyright © by HIGH TECHNOLOGY LETTERS PRESS.
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