一种基于网络整体影响力的节点重要性评估方法  

Evaluation Method for Node Importance Based on the Whole Network Prestige

作　　者：李拓晨[1] 侯磊[1] 李永立[2] 

机构地区：[1]哈尔滨工程大学管理学院,哈尔滨150001 [2]哈尔滨工业大学管理学院,哈尔滨150001

出　　处：《情报学报》2015年第11期1143-1151,共9页Journal of the China Society for Scientific and Technical Information

基　　金：国家软科学基金项目(2010GXS5B173);国家908基金项目(90802090103)

摘　　要：为提高网络中节点评估的效率和有效性，本文从社会网络分析中“点”的角度，应用网络整体分析的思想提出一个评价节点重要性的新方法，内容包括：其一，从网络整体影响力的变化考查节点的重要性，在定义网络整体影响力指标的基础上，考查节点被拿掉后，网络整体影响力指标的变化；如果变化大，说明节点重要，反之则不是。此外，还引入两类参数用于节点重要性的评价：参数α用以反映外生于网络的先验信息，参数β的含义及功能：调控解的稳定性。最后以一个合著网络为应用背景，展示模型的可用性。To improve the efficiency and effectiveness of the network node evaluation, from the perspective of social network analysis, this study proposes a network-based model to find influential node based on the idea that the prestige of a whole network. First, from the changes of prestige of the whole network,the importance of a node is examined. On the basis of the impact indicators, changes of the prestige of a whole network after the node is removed is examined ; if the changes is great, the node is important, otherwise not. Furthermore, two parameters are revealed by the analysis of the importance of a node. Parameter a provides useful information exogenous to the established network, and parameter β measures the robustness of the result for cases in which the incompleteness of the network is considered. At last, on the basis of the coauthor network, a comprehensive application of this new model is also provided.

关 键 词：网络影响力 网络分析 多参数 评估方法 

分 类 号：G353.1[文化科学—情报学]