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arXiv 1002.4042physics.soc-phphysics.bio-ph
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衡量个人在集体动态中的作用

A measure of individual role in collective dynamics

Konstantin Klemm, M. Angeles Serrano, Victor M. Eguiluz, Maxi San Miguel

摘要:

从思想的有效传播到生物医学问题中的药物靶点发现,确定集体动力学中的关键参与者仍然是几个研究领域的挑战。困难在于几个层面:如何在这种混合系统中挑出单个要素的作用,或者哪种方式是量化其重要性的最佳方式。中心性度量通过节点在网络中的位置来描述节点的重要性。避免的关键问题是,节点对集体行为的贡献不是唯一地由系统的结构决定的,而是动力学和网络结构之间相互作用的结果。我们表明,动态影响措施明确如何强烈的节点的动态状态影响集体行为。对于临界传播,根据目标节点的传播能力动态影响目标节点。对于扩散过程,它量化了通过操纵单个节点可以控制真实系统的效率。

英文摘要:

Identifying key players in collective dynamics remains a challenge in several research fields, from the efficient dissemination of ideas to drug target discovery in biomedical problems. The difficulty lies at several levels: how to single out the role of individual elements in such intermingled systems, or which is the best way to quantify their importance. Centrality measures describe a node's importance by its position in a network. The key issue obviated is that the contribution of a node to the collective behavior is not uniquely determined by the structure of the system but it is a result of the interplay between dynamics and network structure. We show that dynamical influence measures explicitly how strongly a node's dynamical state affects collective behavior. For critical spreading, dynamical influence targets nodes according to their spreading capabilities. For diffusive processes it quantifies how efficiently real systems may be controlled by manipulating a single node.

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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