一种关注消息时效性的机会社会网络中节点传播能力分析模型; An Analytical Model for Ranking the Candidates of Disseminating Time-Bound Messages in Opportunistic Mobile Social Networks | |
蔡青松 ; 刘燕 ; 牛建伟 ; 孙利民 | |
刊名 | 电子学报 |
2015 | |
关键词 | 机会社会网络 Katz 中心性 动态通路 社会相遇记录 opportunistic mobile social networks Katz centrality dynamic walk social contact trace |
DOI | 10.3969/j.issn.0372-2112.2015.09.005 |
英文摘要 | 当前评估节点传播能力的工作大多针对静态网络。本文采用演化图模型对机会社会网络进行刻画,通过将传统通路(walk)的概念和静态图中的 Katz 中心性度量扩展到动态网络中,提出了一种基于历史相遇记录评估节点消息分发能力的方法。进一步,针对消息的时效性特性,本文提出了消息随时间推移效用递减的节点传播能力分析模型,该模型考虑了消息所有可能经历的空间和时间通路,并沿时间方向向下加权以描述消息时效性递减效应,可用于有效计算和预测节点的消息转发能力。本文的结论通过真实数据得到了验证。; Traditional methods for evaluating node importance in sustaining the overall network topology or information dis-semination are widely studied,while most of them are not applicable to dynamic settings where connections among nodes change frequently over time.This paper treats an opportunistic mobile social network as a time evolved,dynamic graph and proposes an ef-fective scheme to calculate the relative nodal dissemination capability based on the contact history.In particular,we analyze the node importance in forwarding messages in more general settings where messages are time-dependent and become less important or out of date over time.To this end,we take a dynamic walk counting approach to calculate all possible temporal-spatial routes from a node to any other node by using a method of down-weighting of length.Since the age of a message increases with time,the old walks are discounted to represent the fading influence on the destination nodes.Experiments are conducted based on 4 real-world trace datasets,and the results show that our analytical result is effective at ranking the capabilities of nodes in disseminating or receiving the time-dependent messages.; 国家自然科学基金(No.61170296,No.61373091,No.61190125);国家863计划(No.2012AA050804);北京市教委科技计划(No. KM201110011004);北京工商大学国有资产管理协同创新中心项目; EI; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 9; 1705-1713; 43 |
语种 | 中文 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/420974] |
专题 | 软件与微电子学院 |
推荐引用方式 GB/T 7714 | 蔡青松,刘燕,牛建伟,等. 一种关注消息时效性的机会社会网络中节点传播能力分析模型, An Analytical Model for Ranking the Candidates of Disseminating Time-Bound Messages in Opportunistic Mobile Social Networks[J]. 电子学报,2015. |
APA | 蔡青松,刘燕,牛建伟,&孙利民.(2015).一种关注消息时效性的机会社会网络中节点传播能力分析模型.电子学报. |
MLA | 蔡青松,et al."一种关注消息时效性的机会社会网络中节点传播能力分析模型".电子学报 (2015). |
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