基于注意力机制的深度强化学习交通信号控制.

DRL has gained wild applications in the field of urban transportation signal control. However, the existing DRL traffic signal control researches only use the traditional deep neural network, and its perception ability is limited in complex traffic scenarios. In addition, as one of the three elements of reinforcement learning, it also needs to design the traffic state carefully and manually in the existing researches. Therefore, this paper proposed a DRL traffic signal control algorithm based on attention mechanism. By introducing the attention mechanism, the neural network could automatically pay attention to the important state components to enhance the perception ability of the network, improve the signal control effect, and reduce the difficulty of state vector design. Experimental results on SUMO platform show that compared with the three classical signal control algorithms, only using a simple traffic state, the proposed algorithm has the best performance in average waiting time and travel time under the condition of low and high traffic flow at single intersections and multiple intersections. [ABSTRACT FROM AUTHOR]