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Iterative Neighbour-Information Gathering for Ranking Nodes in Complex Networks

机译:复杂网络中节点排序的迭代邻居信息收集

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摘要

Designing node influence ranking algorithms can provide insights into network dynamics, functions and structures. Increasingly evidences reveal that node’s spreading ability largely depends on its neighbours. We introduce an iterative neighbourinformation gathering (Ing) process with three parameters, including a transformation matrix, a priori information and an iteration time. The Ing process iteratively combines priori information from neighbours via the transformation matrix, and iteratively assigns an Ing score to each node to evaluate its influence. The algorithm appropriates for any types of networks, and includes some traditional centralities as special cases, such as degree, semi-local, LeaderRank. The Ing process converges in strongly connected networks with speed relying on the first two largest eigenvalues of the transformation matrix. Interestingly, the eigenvector centrality corresponds to a limit case of the algorithm. By comparing with eight renowned centralities, simulations of susceptible-infected-removed (SIR) model on real-world networks reveal that the Ing can offer more exact rankings, even without a priori information. We also observe that an optimal iteration time is always in existence to realize best characterizing of node influence. The proposed algorithms bridge the gaps among some existing measures, and may have potential applications in infectious disease control, designing of optimal information spreading strategies.
机译:设计节点影响力排序算法可以提供有关网络动态,功能和结构的见解。越来越多的证据表明,节点的扩展能力在很大程度上取决于其邻居。我们介绍了一个具有三个参数的迭代邻居信息收集(Ing)过程,包括转换矩阵,先验信息和迭代时间。 Ing过程通过变换矩阵迭代地组合来自邻居的先验信息,并向每个节点迭代分配Ing分数以评估其影响。该算法适用于任何类型的网络,并包括一些传统的中心性作为特殊情况,例如度,半本地,LeaderRank。 Ing过程依赖于变换矩阵的前两个最大特征值,在速度快的收敛网络中收敛。有趣的是,特征向量中心性对应于算法的极限情况。通过与八个著名中心进行比较,在真实世界网络上对易感性感染去除(SIR)模型的仿真显示,即使没有先验信息,Ing也可以提供更准确的排名。我们还观察到,最佳迭代时间始终存在,以实现节点影响的最佳表征。所提出的算法弥合了现有措施之间的鸿沟,并可能在传染病控制,最佳信息传播策略设计中具有潜在的应用。

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