摘要
以测绘期刊为研究对象,可视化分析测绘领域研究热点。首先利用网络爬虫获取文献数据,从中提取作者和关键词要素;依据概念间关联关系构建期刊元网络,通过度数中心性和介数中心性评估各子网络节点影响力;综合各子网络的评估指标形成作者和关键词节点的重要性综合指数,判断期刊网络中的核心节点;然后以时间为粒度对关键词要素进行度数频次统计,分析测绘领域研究热点演变;最后对高频关键词进行聚类,总结测绘领域研究发展方向。表明通过复杂网络节点影响力测度可以定量展示中国测绘领域的研究现状,并可在时间维度上展示学科发展演变趋势。
Journals of surveying and mapping were taken as the research object and visual analysis of research hotspots are made.Firstly,the original literature data was crawled from CNKI by web crawler,and the authors and key words were extracted.A periodical meta network was constructed according to the relationship between concepts.The node influence of each sub-network was evaluated by the degree centrality and the betweenness centrality.The evaluation indexes of each sub-network were integrated to form the comprehensive index of the author and keyword nodes.The core nodes in the periodical network were also judged.Then the degree frequency of keywords was calculated by taking time as granularity to analyze the research hotspots in the field of surveying and mapping.Finally,the high frequency keywords were clustered and the development direction of surveying and mapping was summarized.By comparing and analyzing the original data,the influence measurement of complex network nodes can show the current situation of surveying and mapping in China quantitatively.It also shows the development and evolution trend of the subject in time dimension.
作者
刘俊楠
刘海砚
陈晓慧
朱新铭
苏晨琛
李静
陈思雯
LIU Jun-nan;LIU Hai-yan;CHEN Xiao-hui;ZHU Xin-ming;SU Chen-chen;LI Jing;CHEN Si-wen(School of Data and Target Engineering,Information Engineering University,Zhengzhou 450001,China)
出处
《科学技术与工程》
北大核心
2019年第32期43-51,共9页
Science Technology and Engineering
基金
国家自然科学基金(41801313)
河南省自然科学基金(182300410005)资助
关键词
科技文献
复杂网络
测绘
可视化分析
scientific and technical literature
complex network
surveying and mapping
visualization analysis
