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キーワード:
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要旨:
The link structure of the web is analyzed to measure the authority of pages,
which can be taken into account for ranking query results. Due to the enormous
dynamics of the web, with millions of pages created, updated, deleted, and
linked to every day, temporal aspects of web pages and links are crucial
factors for their evaluation. Users are interested in important pages (i.e.,
pages with high authority score) but are equally interested in the recency of
information. Time-and thus the freshness of web content and link
structure-emanates as a factor that should be taken into account in link
analysis when computing the importance of a page. So far only minor effort has
been spent on the integration of temporal aspects into link-analysis
techniques. In this paper we introduce T-Rank Light and T-Rank, two
link-analysis approaches that take into account the temporal aspects freshness
(i.e., timestamps of most recent updates) and activity (i.e., update rates) of
pages and links. Experimental results show that T-Rank Light and T-Rank can
produce better rankings of web pages.
