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arXiv 2011.07788cs.SIphysics.soc-ph
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SSNE:稀疏网络中链接预测的有效节点表示

SSNE: Effective Node Representation for Link Prediction in Sparse Networks

Min-Ren Chen, Ping Huang, Yu Lin, Shi-Min Cai

摘要:

图嵌入在复杂网络中的链接预测中越来越受欢迎,并取得了优异的性能。然而,有限的工作已经做了稀疏网络,代表了大多数真正的网络。在本文中,我们提出了一个模型,稀疏结构网络嵌入(SSNE),以获得节点表示的链接预测稀疏网络。SSNE首先将邻接矩阵转换为归一化$H$阶邻接矩阵之和(SNHAM),然后通过神经网络模型将SNHAM矩阵映射为用于节点表示的$d$维特征矩阵。证明了映射运算是奇异值分解的等价变形。最后,我们计算节点相似度的链接预测基于这样的特征矩阵。通过在合成稀疏网络和真实稀疏网络上的测试实验,与结构相似性指数、矩阵优化和其他图嵌入模型相比,该方法具有更好的链接预测性能。

英文摘要:

Graph embedding is gaining its popularity for link prediction in complex networks and achieving excellent performance. However, limited work has been done in sparse networks that represent most of real networks. In this paper, we propose a model, Sparse Structural Network Embedding (SSNE), to obtain node representation for link predication in sparse networks. The SSNE first transforms the adjacency matrix into the Sum of Normalized $H$-order Adjacency Matrix (SNHAM), and then maps the SNHAM matrix into a $d$-dimensional feature matrix for node representation via a neural network model. The mapping operation is proved to be an equivalent variation of singular value decomposition. Finally, we calculate nodal similarities for link prediction based on such feature matrix. By extensive testing experiments bases on synthetic and real sparse network, we show that the proposed method presents better link prediction performance in comparison of those of structural similarity indexes, matrix optimization and other graph embedding 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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