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arXiv 1409.8485physics.soc-phcs.SIphysics.data-anstat.ML
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通过节点之间的相关性预测丢失的链路

Predicting missing links via correlation between nodes

Hao Liao, An Zeng, Yi-Cheng Zhang

摘要:

链接预测是许多领域中的一个基本问题,其目的是根据观测到的信息来估计两个节点之间存在链接的可能性。由于这个问题涉及到许多应用,从发现丢失的数据到预测网络的演变,最近已经深入研究了链接预测,到目前为止已经提出了许多方法。链接预测的本质挑战是估计节点之间的相似性。现有的大多数方法都是基于公共邻居索引及其变体。在本文中,我们提出了计算节点之间的相似性的相关系数。该方法被认为是非常有效的应用时,计算基于高阶路径的相似性。最后,我们将基于相关性的方法与资源分配方法相结合,发现结合的方法可以大大优于现有的方法,特别是在稀疏网络中。

英文摘要:

As a fundamental problem in many different fields, link prediction aims to estimate the likelihood of an existing link between two nodes based on the observed information. Since this problem is related to many applications ranging from uncovering missing data to predicting the evolution of networks, link prediction has been intensively investigated recently and many methods have been proposed so far. The essential challenge of link prediction is to estimate the similarity between nodes. Most of the existing methods are based on the common neighbor index and its variants. In this paper, we propose to calculate the similarity between nodes by the correlation coefficient. This method is found to be very effective when applied to calculate similarity based on high order paths. We finally fuse the correlation-based method with the resource allocation method, and find that the combined method can substantially outperform the existing methods, especially in sparse networks.

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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