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arXiv 2205.09263cs.LGcs.SIstat.ML
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连续时间网络的互激励潜空间Hawkes过程模型

A Mutually Exciting Latent Space Hawkes Process Model for Continuous-time Networks

University of Toledo(托莱多大学);The Ohio State University(俄亥俄州立大学)

Zhipeng Huang, Hadeel Soliman, Subhadeep Paul, Kevin S. Xu

摘要:

网络和时间点过程是在各种领域中对复杂动态关系数据建模的基本构建块。我们提出了潜在空间霍克斯(LSH)模型,一种新的生成模型的连续时间网络的关系事件,使用潜在空间表示的节点。我们使用相互激励的霍克斯过程与基线强度依赖于节点之间的距离在潜在的空间和发送者和接收者的具体影响节点之间的关系事件建模。我们证明了我们提出的LSH模型可以复制在真实时间网络中观察到的许多特征,包括互惠性和传递性,同时还实现了更高的预测精度,并提供了比现有模型更可解释的拟合。

英文摘要:

Networks and temporal point processes serve as fundamental building blocks for modeling complex dynamic relational data in various domains. We propose the latent space Hawkes (LSH) model, a novel generative model for continuous-time networks of relational events, using a latent space representation for nodes. We model relational events between nodes using mutually exciting Hawkes processes with baseline intensities dependent upon the distances between the nodes in the latent space and sender and receiver specific effects. We demonstrate that our proposed LSH model can replicate many features observed in real temporal networks including reciprocity and transitivity, while also achieving superior prediction accuracy and providing more interpretable fits than existing models.

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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