面向机会社会网络的服务广告分发机制

提出面向机会社会网络的服务广告分发机制,解决移动网络环境中由于节点移动性、拓扑动态性引起的集中式服务注册库失效的问题.首先分析机会社会网络中服务表现出的社会特征,提出服务社会上下文及其参数度量方法;然后提出基于社会上下文的服务广告分发机制,该机制根据服务行业相关度判断用户对服务的感兴趣程度,以确定广告目标节点,根据可靠度和活跃度计算节点效用,并根据行业时空共存关系预测节点和服务行业相遇概率,以动态选择服务广告代理;最后在社区移动模型下进行了仿真实验,验证了算法的正确性和有效性.

Service Advertisement Dissemination in Opportunistic Social Networks

In this paper we propose a service advertisement dissemination mechanism for opportunistic social networks,which is used to solve the problem of the inefficiency of the central service registry incurred by node mobility and topology instability.We analyze service social characteristic showed in opportunistic social networks,and propose the concept of service social context and its measure method.Then we suggest a social context based service advertisement dissemination mechanism,which estimates a user’s interest degree with a service in terms of service industry relevancy in order to select an advertising destination.Calculating utility by reliability and activeness and predicting the probability of meeting with a service industry by industry spatio-temporal relationship of coexistence,our approach selects a node to be an advertisement agent dynamically.Furthermore,we evaluate our approach’s performance using a mobility model based on a social network validated with real human mobility traces.The experimental analyses are conducted and demonstrated the effectiveness and efficiency of our approach.