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arXiv physics/0701107physics.soc-ph
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社交网络建模与研究的新方法

New approaches to model and study social networks

Pedro G. Lind, Hans J. Herrmann

摘要:

我们描述和开发三个最近的新奇的网络研究,这是特别有用的研究社会系统。第一个是发现一些基本的动力学规律,这些规律使得在社交网络中观察到的基本特征得以出现,即非平凡的聚类特性、正度相关性的存在和社区的细分。为了重现所有这些功能,我们描述了一个简单的模型,移动碰撞代理,其冲突定义的代理之间的连接,这是在底层网络中的节点,并开发一些分析考虑。第二点涉及集群的特殊性及其与全球网络度量的关系,即与网络中循环规模的分布的关系。由于在社会二分网络中,它是不可能从标准程序来衡量聚类,我们提出了一个替代的聚类系数,可以用来提取一个改进的归一化循环分布在任何网络。最后,第三点涉及网络上发生的动态过程,即研究信息在网络中的传播。特别是,我们专注于八卦传播的传播规则施加一些限制的特定功能。为此,我们引入了一个量,传播因子,它测量的平均最大分数的最近的邻居接触的八卦,并找到了惊人的结果,有一个最佳的非平凡的朋友数量的传播因子被最小化,减少被八卦的危险。

英文摘要:

We describe and develop three recent novelties in network research which are particularly useful for studying social systems. The first one concerns the discovery of some basic dynamical laws that enable the emergence of the fundamental features observed in social networks, namely the nontrivial clustering properties, the existence of positive degree correlations and the subdivision into communities. To reproduce all these features we describe a simple model of mobile colliding agents, whose collisions define the connections between the agents which are the nodes in the underlying network, and develop some analytical considerations. The second point addresses the particular feature of clustering and its relationship with global network measures, namely with the distribution of the size of cycles in the network. Since in social bipartite networks it is not possible to measure the clustering from standard procedures, we propose an alternative clustering coefficient that can be used to extract an improved normalized cycle distribution in any network. Finally, the third point addresses dynamical processes occurring on networks, namely when studying the propagation of information in them. In particular, we focus on the particular features of gossip propagation which impose some restrictions in the propagation rules. To this end we introduce a quantity, the spread factor, which measures the average maximal fraction of nearest neighbors which get in contact with the gossip, and find the striking result that there is an optimal non-trivial number of friends for which the spread factor is minimized, decreasing the danger of being gossiped.

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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