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arXiv 1505.04077physics.soc-phcs.SI
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接触能力有限的社会传染动力学

Dynamics of social contagions with limited contact capacity

Wei Wang, Panpan Shu, Yu-Xiao Zhu, Ming Tang, Yi-Cheng Zhang

摘要:

个体总是受到时间、精力等非弹性资源的限制,从而限制了个体对社会交往的投入和交往能力。接触能力在社会传染动力学中起着重要的作用,但迄今为止还没有理论分析。在本文中,我们首先提出了一个非马尔可夫模型来理解接触能力对社会传染的影响,其中每个人只能接触并传递信息给有限数量的邻居。然后,我们开发了一个异构的边缘为基础的房室理论,这个模型,并获得了显着的协议与模拟。通过理论分析和仿真实验,我们发现,增大接触容量会使网络对行为传播更加脆弱。有趣的是,我们发现,这两个连续和不连续的依赖最终采用的大小上的信息传输概率可以出现。并且两种依赖之间存在交叉现象。更具体地说,只有当度指数大于某个临界度指数时,才能通过增大接触容量来诱导交叉现象,而当度指数小于临界度指数时,对于任何接触容量,最终行为采纳规模总是连续增长的.

英文摘要:

Individuals are always limited by some inelastic resources, such as time and energy, which restrict them to dedicate to social interaction and limit their contact capacity. Contact capacity plays an important role in dynamics of social contagions, which so far has eluded theoretical analysis. In this paper, we first propose a non-Markovian model to understand the effects of contact capacity on social contagions, in which each individual can only contact and transmit the information to a finite number of neighbors. We then develop a heterogeneous edge-based compartmental theory for this model, and a remarkable agreement with simulations is obtained. Through theory and simulations, we find that enlarging the contact capacity makes the network more fragile to behavior spreading. Interestingly, we find that both the continuous and discontinuous dependence of the final adoption size on the information transmission probability can arise. And there is a crossover phenomenon between the two types of dependence. More specifically, the crossover phenomenon can be induced by enlarging the contact capacity only when the degree exponent is above a critical degree exponent, while the the final behavior adoption size always grows continuously for any contact capacity when degree exponent is below the critical degree exponent.

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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