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arXiv 2405.03255cs.LG
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基于自监督学习的多模态时空预测

Multi-Modality Spatio-Temporal Forecasting via Self-Supervised Learning

Southern University of Science and Technology(南方科技大学);The University of Tokyo(东京大学);Jilin University(吉林大学)

Jiewen Deng, Renhe Jiang, Jiaqi Zhang, Xuan Song

AI总结:

本文提出基于自监督学习的多模态时空预测框架MoSSL,从时间、空间和模态视角挖掘潜在模式并量化动态异质性,在两个真实数据集上验证了其优于现有方法。

摘要:

多模态时空(MoST)数据通过融合多种模态扩展了时空(ST)数据,在监测系统中十分普遍,涵盖多样的交通需求和空气质量评估。尽管近年来时空建模取得了显著进展,但仍需强调挖掘不同模态信息潜力的必要性。鲁棒的MoST预测更具挑战性,因为它具有(i)高维且复杂的内部结构,以及(ii)由时间、空间和模态变化引起的动态异质性。在本研究中,我们提出了一种新颖的基于自监督学习的MoST学习框架,即MoSSL,旨在从时间、空间和模态视角揭示潜在模式,同时量化动态异质性。在两个真实世界MoST数据集上的实验结果验证了我们的方法与最先进基线相比的优越性。模型实现可在https://github.com/beginner-sketch/MoSSL获取。

英文摘要:

Multi-modality spatio-temporal (MoST) data extends spatio-temporal (ST) data by incorporating multiple modalities, which is prevalent in monitoring systems, encompassing diverse traffic demands and air quality assessments. Despite significant strides in ST modeling in recent years, there remains a need to emphasize harnessing the potential of information from different modalities. Robust MoST forecasting is more challenging because it possesses (i) high-dimensional and complex internal structures and (ii) dynamic heterogeneity caused by temporal, spatial, and modality variations. In this study, we propose a novel MoST learning framework via Self-Supervised Learning, namely MoSSL, which aims to uncover latent patterns from temporal, spatial, and modality perspectives while quantifying dynamic heterogeneity. Experiment results on two real-world MoST datasets verify the superiority of our approach compared with the state-of-the-art baselines. Model implementation is available at https://github.com/beginner-sketch/MoSSL.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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