Journal of South China University of Technology(Natural Science Edition) ›› 2024, Vol. 52 ›› Issue (11): 83-94.doi: 10.12141/j.issn.1000-565X.240064

• Intelligent Transportation System • Previous Articles     Next Articles

Joint Prediction Model of Multi-Modal Transportation Passenger Flow Based on Hypergraph Convolution

WANG Jiangfeng(), DING Weidong, LUO Dongyu, LI Yunfei, QI Chongkai, DONG Honghui   

  1. Key Laboratory of Transport Industry of Big Data Application Technologies for Comprehensive Transport,Beijing Jiaotong University,Beijing 100044,China
  • Received:2024-02-05 Online:2024-11-25 Published:2024-06-07
  • About author:王江锋(1976—),男,教授,博士生导师,主要从事智能交通及车辆研究。E-mail:wangjiangfeng@bjtu.edu.cn
  • Supported by:
    the National Key R&D Program of China(2022YFB4300400)

Abstract:

The traffic modes in metropolis is interwoven to form an interconnected passenger flow network, and the spatio-temporal relationship between cross-transportation modes is complicated, which requires the joint prediction of passenger flow to analyze the overall travel law. For the cross-transportation passenger flow network, the supergraph correlation matrix of cross-transportation modes is introduced to describe the correlation between the passenger flow supergraph network of bus and subway, and a joint prediction model based on dual-mode spatial-temporal supergraph convolution network (BSTHCN) is proposed. Specifically, the model consists of three parts: an input module, a spatio-temporal convolution module (including temporal and spatial convolutions), and an output module, which can simultaneously capture the passenger flow network characteristics of both buses’ and metros’ stations and routes, as well as the transfer passenger flow characteristics between the two different passenger flow networks. The proposed model can identify and extract important information features, and perform feature aggregation and allocation. The experimental results show that the proposed model has better prediction accuracy compared to classical prediction models. The proposed model reduces the mean absolute error (MAE) by 8.93% and 8.10% on the bus and metro datasets, respectively, while the RMSE decreased by 10.64% and 7.47%. Moreover, the parameter volume and model runtime of proposed model are within a reasonable range. Compared to S-TGCN and DCRNN, proposed model achieves more accurate predictions with only a 4.82% increase in runtime. On the whole, proposed model demonstrates strong competitiveness. The ablation experimental results further demonstrate that after incorporating hypergraphs and considering multi-modal transportation correlations, the proposed model can better reflect both local and global characteristics in passenger flow networks, thereby improving the accuracy of passenger flow prediction.

Key words: joint prediction of passenger flow, multi-modal transportation, spatio-temporal characteristic, hypergraph convolution

CLC Number: