Scale-free and small-world properties in co-occurrence networks of major MeSH terms and all MeSH terms in MEDLINE
10.3969/j.issn.1671-3982.2015.10.014
- VernacularTitle:MEDLINE 数据库中主要主题词与全部主题词的共现网络无标度性与小世界特性的检验分析
- Author:
Wenjun GAO
;
Lei CUI
- Publication Type:Journal Article
- Keywords:
Word co-occurrence network;
Social network analysis;
Centrality;
Scale-free properties;
Small-world effect
- From:Chinese Journal of Medical Library and Information Science
2015;24(10):65-71
- CountryChina
- Language:Chinese
-
Abstract:
Co-occurrence network of major MeSH terms and all MeSH terms was constructed respectively with MEDLINE-covered pharmacological literature as its example.The degree, closeness and betweenness of centrality in different nodes of the two co-occurrence networks were analyzed , the distribution of scale-free properties in the two co-occurrence networks was tested, the small-world effect of the two co-occurrence networks was identified by comparing their overall properties ( average distance and clustering coefficient ) , which showed the scale-free properties and small-world effect of the two co-occurrence networks.The co-occurrence network of all MeSh terms could thus be used in analysis of network properties while that of major MeSH terms could thus be used in analysis of subject contents.
