Profiling core-periphery network structure by random walkers.

Profiling core-periphery network structure by random walkers.
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DOI:
10.1038/srep01467
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发表时间:
2013
期刊:
影响因子:
4.6
通讯作者:
Piccardi, Carlo
Piccardi, Carlo
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Della Rossa, Fabio;Dercole, Fabio;Piccardi, Carlo

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揭示网络结构的主要特征对于理解许多静态和动态属性至关重要,例如对故障的鲁棒性、传播动态或集体行为。在可能的特征中,核心-外围范式将网络建模为密集核心与稀疏连接外围的联合,突出了每个节点基于其拓扑位置的作用。在这里,我们表明,可以通过详细阐述随机游走者的行为来有效地描述核心-外围结构。导出一条曲线(核心-外围轮廓)和一个数字指标,提供全局拓扑肖像。同时,每个节点都会有一个核心值,以限定其位置和角色。在社会、技术、经济和生物网络中的应用揭示了该技术在揭示整体网络结构和某些特定节点的特殊作用方面的力量。
Disclosing the main features of the structure of a network is crucial to understand a number of static and dynamic properties, such as robustness to failures, spreading dynamics, or collective behaviours. Among the possible characterizations, the core-periphery paradigm models the network as the union of a dense core with a sparsely connected periphery, highlighting the role of each node on the basis of its topological position. Here we show that the core-periphery structure can effectively be profiled by elaborating the behaviour of a random walker. A curve—the core-periphery profile—and a numerical indicator are derived, providing a global topological portrait. Simultaneously, a coreness value is attributed to each node, qualifying its position and role. The application to social, technological, economical, and biological networks reveals the power of this technique in disclosing the overall network structure and the peculiar role of some specific nodes.
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