Fixation and Consensus Times on a Network: A Unified Approach

Fixation and Consensus Times on a Network: A Unified Approach
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DOI:
10.1103/physrevlett.101.258701
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发表时间:
2008-12-19
影响因子:
8.6
通讯作者:
McKane, A. J.
McKane, A. J.
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Baxter, G. J.;Blythe, R. A.;McKane, A. J.

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我们在一个共同的框架内研究了一个网络上生物多样性、种群遗传学、语言进化和舆论动态的一组随机模型。每个节点具有具有由强度m(Ij)指定的相互作用的状态0和x(I)。对于任意集合m(Ij),我们得到了达到凝视或共识(所有x(I)=0或1)的平均时间的近似表达式。值得注意的是,在与语言变化相关的情况下,这一时间与网络结构无关。
We investigate a set of stochastic models of biodiversity, population genetics, language evolution, and opinion dynamics on a network within a common framework. Each node has a state 0 < x(i)< 1 with interactions specified by strengths m(ij). For any set of m(ij), we derive an approximate expression for the mean time to reach fixation or consensus (all x(i)=0 or 1). Remarkably, in a case relevant to language change, this time is independent of the network structure.