arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1303.2176physics.soc-phcs.SI
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在线人类活动的缩放行为

Scaling behavior of online human activity

Zhi-Dan Zhao, Shi-Min Cai, Junming Huang, Yan Fu, Tao Zhou

摘要:

互联网技术的飞速发展使人们能够探索网络,记录网络活动的痕迹。通过对这些大规模数据集(即痕迹)的分析,我们可以了解人类活动的动态行为。本文利用去趋势波动分析技术和多尺度熵方法,对电子商务中音乐、图书和电影等人类活动的标度行为和复杂性进行了全面的研究。第一,三类媒体的收视行为时间序列具有相似的标度性,其标度指数在0.53 ~ 0.58之间,表明收视媒体的集体行为遵循一个体现自相似性和长程相关性的过程。同时,通过基于用户的活动将用户分成三个组(即,单位时间内的评分),我们发现,在三个组的间隔时间序列的标度指数是不同的。因此,这些结果表明这些集体行为中存在较强的长程相关性。此外,他们的信息复杂性从三个不同的群体。为了解释这三个群体的集体行为的差异,我们研究了个体层面上人类活动的动态行为,发现少数用户的动态行为具有极小的标度指数,与长距离的关系相关。通过比较四个典型用户的时间间隔分布,我们发现双峰分布可能会带来异常的标度行为。这些分析结果不仅可以提供洞察力,了解其动态行为的电子商务中的在线人类活动,而且可以应用于获取潜在的经济利益。

英文摘要:

The rapid development of Internet technology enables human explore the web and record the traces of online activities. From the analysis of these large-scale data sets (i.e. traces), we can get insights about dynamic behavior of human activity. In this letter, the scaling behavior and complexity of human activity in the e-commerce, such as music, book, and movie rating, are comprehensively investigated by using detrended fluctuation analysis technique and multiscale entropy method. Firstly, the interevent time series of rating behaviors of these three type medias show the similar scaling property with exponents ranging from 0.53 to 0.58, which implies that the collective behaviors of rating media follow a process embodying self-similarity and long-range correlation. Meanwhile, by dividing the users into three groups based their activities (i.e., rating per unit time), we find that the scaling exponents of interevent time series in three groups are different. Hence, these results suggest the stronger long-range correlations exist in these collective behaviors. Furthermore, their information complexities vary from three groups. To explain the differences of the collective behaviors restricted to three groups, we study the dynamic behavior of human activity at individual level, and find that the dynamic behaviors of a few users have extremely small scaling exponents associating with long-range anticorrelations. By comparing with the interevent time distributions of four representative users, we can find that the bimodal distributions may bring the extraordinary scaling behaviors. These results of analyzing the online human activity in the e-commerce may not only provide insights to understand its dynamic behaviors but also be applied to acquire the potential economic interest.

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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