项目名称: Web2.0环境下基于社会化网络瓶颈限制的信息扩散最大化研究
项目编号: No.71203166
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 宏观管理与政策
项目作者: 张敏
作者单位: 武汉大学
项目金额: 21万元
中文摘要: 社会化网络中信息扩散最大化问题是在量化影响信息扩散关键因素的基础上分析网络中各信息节点的影响力,并通过数值优化方法配置扩散初始触发节点的网络分布以及扩散路径选择,从而帮助个人、企业和政府等组织选择最优的信息扩散策略和最有效的信息服务模式。Web2.0环境赋予了社会化网络信息生成泛在化和网络结构动态化等新特征,针对这些变化本项目首先引入瓶颈限制这一概念来描述社会化网络的动态演变,进而调整信息扩散中的路径、时间和次序,以降低因忽视Web2.0的特征环境带来的无效信息扩散。在初始扩散节点的选择上,并非简单地选择当前最具影响力的信息节点,而是跟踪信息节点影响力的进化行为,通过时序分析的方法预测该节点未来的影响力从而辅助扩散初始触发点选择的决策过程。最后,本研究从大系统论的角度来观察整个信息扩散过程,将信息扩散最大化问题转化为一类资源分配问题,并针对模型设计了混合动态规划的求解算法。
中文关键词: Web2.0环境;最大化;瓶颈限制;信息扩散;社会化网络
英文摘要: Information diffusion maximization in a social network is to target a given number of nodes in the network such that the expected number of activated nodes from these nodes is maximized. It aims to determine the optimal location of "seeds" and choose the optimal diffusion routings to help individuals,enterprises and governments in the decision-making processes of information diffusion strategy and information service mode. In Web2.0 environment, information creation is ubiquitous and the network structure is dynamic. In this project, we describe the dynamic through defining network bottleneck limitation. New clusters of sub-networks form based on the certain bottleneck limitation value of social networks. Identification and recognition of prestigious members have been a crucial issue. Besides, the dynamic nature of members' behaviour determines the evolving nature of members' prestige. With the evolution of members' behaviour, currently prestigious members may be substituted by others who are not prestigious at present. The prediction of members' prestige evolution based on the current data analysis will help discover potential prestigious members when considering the long-term interests. We predict the influence of the information nodes through a time series analysis. Then the diffusion maxmization problem can
英文关键词: Web2.0 environment;Maximizing;Bottleneck limitation;Information diffusion;Social network