标题： 无标度网络对由波动负载引起的级联故障的鲁棒性 显示英文标题

标题： Robustness of scale-free networks to cascading failures induced by fluctuating loads

摘要： 考虑到现实世界功能网络中的过载故障通常是由超出允许范围的暂时性负载极端值引起的，我们研究了尺度无序网络在波动负载引起的级联过载故障下的鲁棒性。 在我们的模型中，负载由在网络上游动的随机行走者来描述，当节点上的行走者数量超过节点容量时，节点会失效。 我们通过生成函数方法得到的结果显示，尺度无序网络比具有同质度分布的Erdős-Rényi随机图对级联过载故障更具鲁棒性。 这一结论与之前忽略负载波动影响的研究结果相反。 显示英文摘要

摘要： Taking into account the fact that overload failures in real-world functional networks are usually caused by extreme values of temporally fluctuating loads that exceed the allowable range, we study the robustness of scale-free networks against cascading overload failures induced by fluctuating loads. In our model, loads are described by random walkers moving on a network and a node fails when the number of walkers on the node is beyond the node capacity. Our results obtained by using the generating function method shows that scale-free networks are more robust against cascading overload failures than Erd\H{o}s-R\'enyi random graphs with homogeneous degree distributions. This conclusion is contrary to that predicted by previous works which neglect the effect of fluctuations of loads.