arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1107.0429physics.soc-phcs.SIphysics.data-an
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小世界产生最有效的信息传播

Small world yields the most effective information spreading

Linyuan Lü, Duan-Bing Chen, Tao Zhou

摘要:

信息和疾病的传播动力学通常使用统一的框架和类似的模型进行分析。本文提出了一个模型来强调信息传播与传染病传播的本质区别,该模型考虑了记忆效应、社会强化和接触的非冗余性。在一定条件下,信息在规则网络中的传播速度比在随机网络中的传播速度更快,传播范围更广,这在一定程度上支持了最近关于网络社会中信息传播的实验观察[D. Centola,Science { \bf 329},1194(2010)]。同时,仿真结果表明,随着网络规模的增大,随机网络更有利于有效传播。这对上述实验在大规模系统中的有效性提出了挑战。更重要的是,我们表明,通过在规则结构中引入一点随机性,可以大大提高传播效果,即小世界网络产生最有效的信息传播。我们的工作为理解局部聚类在信息传播中的作用提供了见解。

英文摘要:

Spreading dynamics of information and diseases are usually analyzed by using a unified framework and analogous models. In this paper, we propose a model to emphasize the essential difference between information spreading and epidemic spreading, where the memory effects, the social reinforcement and the non-redundancy of contacts are taken into account. Under certain conditions, the information spreads faster and broader in regular networks than in random networks, which to some extent supports the recent experimental observation of spreading in online society [D. Centola, Science {\bf 329}, 1194 (2010)]. At the same time, simulation result indicates that the random networks tend to be favorable for effective spreading when the network size increases. This challenges the validity of the above-mentioned experiment for large-scale systems. More significantly, we show that the spreading effectiveness can be sharply enhanced by introducing a little randomness into the regular structure, namely the small-world networks yield the most effective information spreading. Our work provides insights to the understanding of the role of local clustering in information spreading.

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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