在线协同写作的人类动力学分析  

Human dynamics analysis in online collaborative writing

作　　者：赵飞[1,2] 刘金虎[1,3] 查一龙[1,4] 周涛[1] 

机构地区：[1]电子科技大学计算机科学与工程学院,互联网科学中心,成都610054 [2]电子科技大学经济与管理学院,信息经济与互联网实验室,成都610054 [3]电子科技大学数学科学学院,成都610054 [4]电子科技大学示范性软件学院,国际化软件人才实验班,成都610054

出　　处：《物理学报》2011年第11期757-766,共10页Acta Physica Sinica

基　　金：国家自然科学基金重点项目(批准号:10635040)和国家自然科学基金面上项目(批准号:70871082,10975126,70971089)资助的课题~~

摘　　要：对人类在线行为模式的探讨是近年来人类动力学研究的热点.基于维基百科数据,文章针对一类重要且普遍的在线行为——在线协同写作,进行时间统计特性分析和内容更新统计分析.实证显示在线协同写作时间间隔分布呈多尺度特征,1min到30min和30min到24h两个时间段上时间间隔分别服从指数为1.62和1.16的幂律分布,而大于24h的时间间隔服从形如F(τ)∝τ-b-alog(τ)的累积分布.分析表明,连续提交行为和交互提交行为共同导致时间间隔的多尺度分布,其中连续提交行为主导了30min之内幂指数为1.62的间隔时间分布,而交互提交行为主导了30min到24h范围内幂指数为1.16的时间间隔分布.进一步地,文章作者发现反向更新是协同写作过程中普遍存在的现象,反向更新的比例与更新量的关系反映出更新量与相应内容被保留的概率具有极强的关联,很大的更新量得以存活的概率较低.统计分析暗示维基百科编辑行为中存在"看门狗"和"编辑战争".文章的结果有助于加深我们对人类集群行为,特别是协同合作开发行为的认识.Investigating the human online behavior has become a central issue for understanding human dynamics in recent years.In this paper we analyze the temporal and content-updating statistical properties of online collaborative writing based on Wikipedia data.Online collaborative writing is one of the important and widespread human online behaviors,which is of great apphication.Empirical result shows that the distribution of inter-event time in collaborative writing is on the multi-scale.That is to say,two time intervals that range from 1min to 30min and 30min to 24 h both obey power-law distribution with exponents equal to 1.62 and 1.16 respectively,while the interval larger than 24 h obeys a distribution whose cumulative form is F（τ）∝τ-b-alog（τ）.More investigatons show successive updating behavior and mutual updating behavior working together to lead to the multi-scale distribution of inter-event time.Successive updating behavior leads to the power-law distribution with an exponent 1.62 of interval within 30min while mutual updating behavior leads to the power-law distribution with an exponent 1.16 of interval ranging from 30min to 24 h.Furthermore,we find that reverse updating repeats frequently in collaborative writing.The proportions of reversing updating and the updating size are strongly relatively reflect that the updating size is a main reason leading to the relevant content to be preserved.The bigger the updating size,the harder it would be preserved.More statistical analyses imply that ＂watching dog＂ and ＂edit war＂ exist in Wikipedia editing.Those results are very helpful to deepen the understanding of the human collective behavior,especially of the collaborative developing behavior.

关 键 词：在线协同写作 人类动力学 多尺度特征 维基百科 

分 类 号：TP393.09[自动化与计算机技术—计算机应用技术]