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arXiv 0903.0597physics.soc-ph
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度相关网络上的社会传染阈值模型分析

Analysis of a threshold model of social contagion on degree-correlated networks

Peter Sheridan Dodds, Joshua L. Payne

摘要:

我们分析确定当一系列抽象的社会传染模型允许全球传播从一个单一的种子度相关的随机网络。我们推导出最大脆弱组件的预期大小,网络的火绒箱样的临界质量,以及感染随机选择的单个种子将触发全球传播的概率。在适当的限制,我们的结果自然减少到标准的疾病传播模型和巨组件的存在条件。分布式的,无限的种子情况下的最新进展,使我们能够进一步确定全球传播事件的最终规模,当它们发生。为了支持我们的研究结果,我们推导出一个简单而丰富的随机网络双峰度分布的家庭的关键传播量的精确表达式。

英文摘要:

We analytically determine when a range of abstract social contagion models permit global spreading from a single seed on degree-correlated random networks. We deduce the expected size of the largest vulnerable component, a network's tinderbox-like critical mass, as well as the probability that infecting a randomly chosen individual seed will trigger global spreading. In the appropriate limits, our results naturally reduce to standard ones for models of disease spreading and to the condition for the existence of a giant component. Recent advances in the distributed, infinite seed case allow us to further determine the final size of global spreading events, when they occur. To provide support for our results, we derive exact expressions for key spreading quantities for a simple yet rich family of random networks with bimodal degree distributions.

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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