学科知识网络研究(Ⅰ)引文网络的结构、特征与演化

Scientific Knowledge Networks in LIS(Ⅰ):Case Study on the Structure,Characteristics and Evolution of Citation Networks

科学引文网络是学科知识网络的重要组成部分，为分析近110多年来图书馆与情报学领域内的引文网络并梳理其知识链，本文利用SSCI数据库全面收集了该领域内85种国际权威期刊的71350篇文献数据，研究了这些论文的被引频次随时间的变化情况，利用Citespace软件绘制百年来的科学引文网络并对中心度较高的关键性节点进行了分析。结果显示图书馆与情报学有影响力的节点文献主要集中出现于20世纪60年代至今，该学科的知识基础在此期间也得以构建起来。另外图书馆与情报学领域引文网络的入度具有无标度特征，文献的出度分布在半对数坐标中具有线性关系，图书馆与情报学领域内文献的被引和参考之比较低，高引论文的出度对入度的影响比较有限。

In this paper, a totally 71,350 papers of Library and Information Science （LIS） data within 85 kinds of their journals was comprehensively collected from the SSCI database to get the citation networks in nearly 110 years, and to analyze the knowledge chain. After learning the citation account over time, the Citespace software was employed to show the scientific citation networks in the past century and the critical nodes with higher degree were thoroughly analyzed. The research results show all the influential literature nodes within the LIS citation networks mainly distributed in the 1960s up to now, during this period the disciplines infrastructure was built. And another viewpoint in this paper is the in-degree distribution in the field of LIS is of scale-free, the out-degree is of semi-logarithmic linear relationship. The reference cited to citation kept relatively low ratio, the out-degree to in-degree for high influential papers was limited.