英文标题:
《The noisy voter model on complex networks》
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作者:
Adri\\\'an Carro, Ra\\\'ul Toral, Maxi San Miguel
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最新提交年份:
2016
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英文摘要:
We propose a new analytical method to study stochastic, binary-state models on complex networks. Moving beyond the usual mean-field theories, this alternative approach is based on the introduction of an annealed approximation for uncorrelated networks, allowing to deal with the network structure as parametric heterogeneity. As an illustration, we study the noisy voter model, a modification of the original voter model including random changes of state. The proposed method is able to unfold the dependence of the model not only on the mean degree (the mean-field prediction) but also on more complex averages over the degree distribution. In particular, we find that the degree heterogeneity ---variance of the underlying degree distribution--- has a strong influence on the location of the critical point of a noise-induced, finite-size transition occurring in the model, on the local ordering of the system, and on the functional form of its temporal correlations. Finally, we show how this latter point opens the possibility of inferring the degree heterogeneity of the underlying network by observing only the aggregate behavior of the system as a whole, an issue of interest for systems where only macroscopic, population level variables can be measured.
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中文摘要:
我们提出了一种新的分析方法来研究复杂网络上的随机二元状态模型。超越通常的平均场理论,这种替代方法基于对不相关网络引入退火近似,允许将网络结构作为参数异质性处理。作为一个例子,我们研究了噪声选民模型,它是对原始选民模型的修改,包括状态的随机变化。该方法不仅能够揭示模型对平均度(平均场预测)的依赖,而且能够揭示模型对更复杂的平均度分布的依赖。特别是,我们发现,度的异质性——潜在度分布的方差——对模型中由噪声引起的有限尺寸跃迁临界点的位置、系统的局部有序性及其时间相关性的函数形式有很大的影响。最后,我们展示了后一点如何通过只观察系统整体的总体行为来推断底层网络的异质性程度,这是一个只有宏观总体水平变量可以测量的系统感兴趣的问题。
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分类信息:
一级分类:Physics 物理学
二级分类:Physics and Society 物理学与社会
分类描述:Structure, dynamics and collective behavior of societies and groups (human or otherwise). Quantitative analysis of social networks and other complex networks. Physics and engineering of infrastructure and systems of broad societal impact (e.g., energy grids, transportation networks).
社会和团体(人类或其他)的结构、动态和集体行为。社会网络和其他复杂网络的定量分析。具有广泛社会影响的基础设施和系统(如能源网、运输网络)的物理和工程。
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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一级分类:Computer Science 计算机科学
二级分类:Social and Information Networks 社会和信息网络
分类描述:Covers the design, analysis, and modeling of social and information networks, including their applications for on-line information access, communication, and interaction, and their roles as datasets in the exploration of questions in these and other domains, including connections to the social and biological sciences. Analysis and modeling of such networks includes topics in ACM Subject classes F.2, G.2, G.3, H.2, and I.2; applications in computing include topics in H.3, H.4, and H.5; and applications at the interface of computing and other disciplines include topics in J.1--J.7. Papers on computer communication systems and network protocols (e.g. TCP/IP) are generally a closer fit to the Networking and Internet Architecture (cs.NI) category.
涵盖社会和信息网络的设计、分析和建模,包括它们在联机信息访问、通信和交互方面的应用,以及它们作为数据集在这些领域和其他领域的问题探索中的作用,包括与社会和生物科学的联系。这类网络的分析和建模包括ACM学科类F.2、G.2、G.3、H.2和I.2的主题;计算应用包括H.3、H.4和H.5中的主题;计算和其他学科接口的应用程序包括J.1-J.7中的主题。关于计算机通信系统和网络协议(例如TCP/IP)的论文通常更适合网络和因特网体系结构(CS.NI)类别。
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一级分类:Quantitative Finance 数量金融学
二级分类:General Finance 一般财务
分类描述:Development of general quantitative methodologies with applications in finance
通用定量方法的发展及其在金融中的应用
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