Physics – Physics and Society
Scientific paper
2007-10-15
Physics
Physics and Society
9 pages, 5 figures, iop style; corrected typos
Scientific paper
10.1088/1751-8113/41/22/224016
We analyze CiteULike, an online collaborative tagging system where users bookmark and annotate scientific papers. Such a system can be naturally represented as a tripartite graph whose nodes represent papers, users and tags connected by individual tag assignments. The semantics of tags is studied here, in order to uncover the hidden relationships between tags. We find that the clustering coefficient reflects the semantical patterns among tags, providing useful ideas for the designing of more efficient methods of data classification and spam detection.
Caldarelli Guido
Capocci Andrea
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