How Recent is a Web Document?

Authors:
Bo Hu;Florian Lauck;Jan Scheffczyk
Affiliations:
Universität der Bundeswehr München, Munich, Germany;Universität der Bundeswehr München, Munich, Germany;Universität der Bundeswehr München, Munich, Germany
Venue:
Electronic Notes in Theoretical Computer Science (ENTCS)
Year:
2006

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Abstract

One of the most important aspects of a Web document is its up-to-dateness or recency. Up-to-dateness is particularly relevant to Web documents because they usually contain content origining from different sources and being refreshed at different dates. Whether a Web document is relevant for a reader depends on the history of its contents and so-called external factors, i.e., the up-to-dateness of semantically related documents. In this paper, we approach automatic management of up-to-dateness of Web documents that are managed by an XML-centric Web content management system. First, the freshness for a single document is computed, taking into account its change history. A document metric estimates the distance between different versions of a document. Second, up-to-dateness of a document is determined based on its own history and the historical evolutions of semantically related documents.