用户画像驱动图对比学习的交通信息靶向推荐
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长沙理工大学 交通学院

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国家重点研发计划项目(2023YFB2603500);长沙理工大学研究生科研创新项目(CLKYCX24107)


User Profile-driven Graph Comparison Learning for Targeted Recommendation of Traffic Information
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National Key R&D Program of China,2023YFB2603500; Graduate Research Innovation Project of Changsha University of Science and Technology ,CLKYCX24107

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    摘要:

    【目的】针对传统交通信息推荐方法缺乏对个体用户差异的刻画,难以实现精准个性化信息推荐,提出一种用户画像驱动图对比学习的交通信息靶向推荐方法。【方法】首先,融合多源交通数据构建包含用户行为、出行属性及信息偏好的多维标签体系,实现用户画像建模。其次,构建用户–标签二部图结构,设计节点权重并通过多层图卷积网络(GCN)聚合时空上下文特征,将动态交通信息与用户偏好标签映射至统一的度量空间进行表征学习;同时引入自适应扰动与跨层对比机制提升特征鲁棒性,并结合原型对比增强群体语义表达。最后,通过构建综合损失函数优化模型并生成个性化推荐结果。【结果】模型在Hitratio@10、Precision@10、Recall@10、归一化折损累计增益(Normalized Discounted Cumulative Gain,NDCG)@10等指标上,相比各基准模型的最优结果分别上升4.56%、4.56%、2.42%、6.44%。同时模型在信息推荐数量为5表现出最优的综合性能,且在消融实验中验证了各模块对推荐任务的贡献。【结论】该研究为交通信息个性化推荐提供了研究新思路。

    Abstract:

    [Purposes]Given that traditional traffic information recommendation methods lack the ability to depict individual user differences, making it difficult to achieve precise and personalized information recommendation, this study proposes a traffic information targeted recommendation method driven by user profile and graph contrastive learning. [Methods]Firstly, a multi-source traffic data is integrated to construct a multi-dimensional label system encompassing user behavior, travel attributes, and information preferences, enabling user profile modeling. Secondly, a user-label bipartite graph structure is constructed, node weights are designed, and spatiotemporal context features are aggregated through a multi-layer Graph Convolutional Network (GCN). Dynamic traffic information and user preference labels are mapped to a unified metric space for representation learning. Additionally, an adaptive perturbation and cross-layer contrastive mechanism is introduced to enhance feature robustness, and prototype contrastive enhancement is incorporated to strengthen group semantic expression. Finally, a comprehensive loss function is constructed to optimize the model and generate personalized recommendation results. [Findings]Compared to the optimal results of various benchmark models, the model achieves an improvement of 4.56%, 4.56%, 2.42%, and 6.44% in terms of Hitratio@10, Precision@10, Recall@10, and Normalized Discounted Cumulative Gain (NDCG)@10, respectively. Simultaneously, the model demonstrates optimal comprehensive performance when the number of information recommendations is 5, and the contributions of each module to the recommendation task are validated in ablation experiments. [Conclusions]This study provides a new research direction for personalized traffic information recommendation.

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  • 收稿日期:2026-03-29
  • 最后修改日期:2026-05-21
  • 录用日期:2026-05-21
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