Comparing the Hierarchy of Keywords in On-Line News Portals.

ABSTRACT: Hierarchical organization is prevalent in networks representing a wide range of systems in nature and society. An important example is given by the tag hierarchies extracted from large on-line data repositories such as scientific publication archives, file sharing portals, blogs, on-line news portals, etc. The tagging of the stored objects with informative keywords in such repositories has become very common, and in most cases the tags on a given item are free words chosen by the authors independently. Therefore, the relations among keywords appearing in an on-line data repository are unknown in general. However, in most cases the topics and concepts described by these keywords are forming a latent hierarchy, with the more general topics and categories at the top, and more specialized ones

SUBMITTER: Tibely G 

PROVIDER: S-EPMC5089747 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature