Abstract

With the development of network science, the static network has been unable to clearly characterize the dynamic process of the network. In real networks, the interaction between individuals evolves rapidly over time. This network model closely links time to interaction process. Compared with static networks, dynamic networks can clearly describe the interaction time of nodes, which has more practical significance. Therefore, how to better describe the behavior changes of networks after being attacked based on time series is an important problem in the existing cascade failure research. In order to better answer this question, a failure model based on time series is proposed in this paper. The model is constructed according to time, activation ratio, number of edges and connection probability. By randomly attacking nodes at a certain time, the effects of four parameters on sequential networks are analyzed. In order to validate the validity and scientificity of this failure model, we use small social networks in the United States. The experimental results show that the model is feasible. The model takes into account the time as well as the spreading dynamics and provides a reference for explaining the dynamic networks in reality.

Highlights

  • 影响之前时刻。同时,我们注意到在时序网络中一个节点 vi 在某一时刻会同时 接收一定数量的错误信息 Nt fail 与正确信息 Nt correct,如图 3(c)所示,假设节点 vc 在时 刻 3 受到攻击,则节点 vg 在时刻 5 分别收到节点 v f, vc, ve 传来的信息。其中节点 ve 受到节点 vc 的影响导致节点 ve 在时刻 5 传输错误信息,而节点 v f 则不受节点 vc 影响,其传输正确信息。因此节点 vg 在时刻 5 接受了 1 个正确信息,2 个错误 信息。其在时刻 5 失效概率为 pfail =0.64.因此,利用一个概率函数 p 进行模拟节

  • on time series is an important problem in the existing failure research

  • a failure model based on time series is proposed in this paper

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Summary

Introduction

影响之前时刻。同时,我们注意到在时序网络中一个节点 vi 在某一时刻会同时 接收一定数量的错误信息 Nt fail 与正确信息 Nt correct ,如图 3(c)所示,假设节点 vc 在时 刻 3 受到攻击,则节点 vg 在时刻 5 分别收到节点 v f , vc , ve 传来的信息。其中节点 ve 受到节点 vc 的影响导致节点 ve 在时刻 5 传输错误信息,而节点 v f 则不受节点 vc 影响,其传输正确信息。因此节点 vg 在时刻 5 接受了 1 个正确信息,2 个错误 信息。其在时刻 5 失效概率为 pfail =0.64.因此,利用一个概率函数 p 进行模拟节. 数 T 、激活比例 Active _ p 、连接边数 M 、连接概率 Con _ p 对网络的影响,此 (g) T=ALL 图 1(网刊彩色)时序网络图 (a)时刻 1 快照;(b)时刻 2 快照;(c)时刻 3 快照;(d)时刻 4 快照(e) (Online Colour) Sequential network: (a) Time 1 snapshot; (b) Time 2 snapshot; (c) Time 3 snapshot; (d) Time 4 snapshot; (e) Time 5 snapshot; (f)Time 6 snapshot; (g) Time aggregation graph

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