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计算机工程 ›› 2020, Vol. 46 ›› Issue (5): 26-33. doi: 10.19678/j.issn.1000-3428.0056316

• 热点与综述 • 上一篇    下一篇

基于时空多图卷积网络的交通站点流量预测

荣斌1a,1b, 武志昊1a,1b, 刘晓辉2, 赵苡积1a,1b, 林友芳1a,1b, 景一真1a,1b   

  1. 1. 北京交通大学 a. 计算机与信息技术学院;b. 交通数据分析与挖掘北京市重点实验室, 北京 100044;
    2. 中国民用航空局民航旅客服务智能化应用技术重点实验室, 北京 100105
  • 收稿日期:2019-10-17 修回日期:2019-11-26 发布日期:2019-12-04
  • 作者简介:荣斌(1995-),男,硕士研究生,主研方向为数据与知识工程、时空数据挖掘;武志昊,副教授、博士生导师;刘晓辉(通信作者),硕士;赵苡积,博士研究生;林友芳,教授、博士生导师;景一真,硕士研究生。
  • 基金资助:
    中央高校基本科研业务费专项资金(2019JBM023)。

Flow Prediction of Traffic Stations Based on Spatio-Temporal Multi-Graph Convolutional Network

RONG Bin1a,1b, WU Zhihao1a,1b, LIU Xiaohui2, ZHAO Yiji1a,1b, LIN Youfang1a,1b, JING Yizhen1a,1b   

  1. 1a. School of Computer and Information Technology;1b. Beijing Key Lab of Traffic Data Analysis and Mining, Beijing Jiaotong University, Beijing 100044, China;
    2. Key Laboratory of Intelligent Passenger Service of Civil Aviation, Civil Aviation Administration of China, Beijing 100105, China
  • Received:2019-10-17 Revised:2019-11-26 Published:2019-12-04

摘要: 交通流量预测是智能交通系统中的重要组成部分,但由于交通流量受交通状况、地理位置、时间等多种因素影响,使其具有高度非线性与复杂性,实现精准预测的难度较大。针对交通站点的出入流量预测问题,提出一种基于上下文门控的时空多图卷积网络(CG-STMGCN)模型。根据站点间的相邻关系与流通流量关系构造邻居图与流通流量图表示站点流量之间的邻近相关性与流量依赖性,在两图上分别建立基于上下文门控的时空卷积模块捕获站点流量的时空特征,并使用哈达玛乘积融合两图的输出作为最终预测结果。在真实交通站点数据集上的实验结果表明,CG-STMGCN模型的预测准确性优于同类预测方法,且稳定性更强。

关键词: 智能交通, 流量预测, 交通站点, 时空多图卷积, 上下文门控单元

Abstract: Traffic flow prediction is an important part of intelligent transportation systems.However,due to the influence of traffic conditions,geographical location,time and other factors,traffic flow prediction is highly non-linear and complex,which imposes a great challenge to accurate prediction.This paper proposes a novel Contextual Gated Spatio-Temporal Multi-Graph Convolutional Network(CG-STMGCN) model to predict the inflow and outflow of traffic stations.In this model,the neighborhood graph and the flow-wise graph are constructed based on the adjacent relationships and flow-wise relationships between stations to represent the proximity correlations and flow dependencies between station flows.Then a contextual gated spatio-temporal convolutional module is constructed on two graphs to capture the spatio-temporal features of station flows.Finally,Hadamard product is used to fuse the outputs of the two graphs as the final prediction result.Experimental results on the dataset of real traffic stations show that the proposed CG-STMGCN model outperforms other existing prediction models in terms of prediction performance,and has better stability.

Key words: intelligent transportation, flow prediction, traffic station, spatio-temporal multi-graph convolution, contextual gated unit

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