Page "Network theory" Paragraph 7

Several Web search ranking algorithms use link-based centrality metrics, including Google's PageRank, Kleinberg's HITS algorithm, the CheiRank and TrustRank algorithms.

Link analysis is also conducted in information science and communication science in order to understand and extract information from the structure of collections of web pages.

For example the analysis might be of the interlinking between politicians ' web sites or blogs.

Another use is for classifying pages according to their mention in other pages.