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arXiv 1608.01037cs.SIphysics.soc-ph
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级联故障与病毒传播相互作用下的互依网络鲁棒性

The robustness of interdependent networks under the interplay between cascading failures and virus propagation

Dawei Zhao, Zhen Wang, Gaoxi Xiao, Bo Gao, Lianhai Wang

摘要:

级联故障和传染病动力学是网络科学的两个成功应用领域,通常被分开研究。它们如何相互影响仍然是一个开放的、有趣的问题。在这封信中,我们将这两个过程耦合起来,并将它们放入相互依赖的网络框架中,其中每个网络只支持一个动态过程。特别有趣的是,它们自发地形成一个反馈回路:病毒传播触发系统的级联故障,而级联故障抑制病毒传播。特别是,存在病毒传播的关键阈值,超过该阈值,相互依赖的网络就会完全崩溃。此外,如果支持病毒传播的网络具有更密集的连接,则相互依赖的网络将更脆弱;否则,相互依赖的系统对于其他层中的连接的变化是鲁棒的。这一发现不同于以前的框架级联故障的相互依赖的网络,更好的鲁棒性通常需要更密集的连接。最后,为了保护相互依赖的网络,我们还提出了基于识别能力的控制措施。这种能力越大,相互依赖的网络就越健壮。

英文摘要:

Cascading failures and epidemic dynamics, as two successful application realms of network science, are usually investigated separately. How do they affect each other is still one open, interesting problem. In this letter, we couple both processes and put them into the framework of interdependent networks, where each network only supports one dynamical process. Of particular interest, they spontaneously form a feedback loop: virus propagation triggers cascading failures of systems while cascading failures suppress virus propagation. Especially, there exists crucial threshold of virus transmissibility, above which the interdependent networks collapse completely. In addition, the interdependent networks will be more vulnerable if the network supporting virus propagation has denser connections; otherwise the interdependent systems are robust against the change of connections in other layer(s). This discovery differs from previous framework of cascading failure in interdependent networks, where better robustness usually needs denser connections. Finally, to protect interdependent networks we also propose the control measures based on the identification capability. The larger this capability, more robustness the interdependent networks will be.

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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