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A Pocket Guide to Web History

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons44119

Berberich,  Klaus
Databases and Information Systems, MPI for Informatics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons44104

Bedathur,  Srikanta
Databases and Information Systems, MPI for Informatics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons45720

Weikum,  Gerhard
Databases and Information Systems, MPI for Informatics, Max Planck Society;

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Zitation

Berberich, K., Bedathur, S., & Weikum, G. (2007). A Pocket Guide to Web History. In I. Ziviani, & R. Baeza-Yates (Eds.), String Processing and Information Retrieval: 14th International Symposium, SPIRE 2007 (pp. 86-97). Berlin, Germany: Springer.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-1E1B-3
Zusammenfassung
Web archives like the {I}nternet {A}rchive preserve the evolutionary history of large portions of the {W}eb. Access to them, however, is still via rather limited interfaces – a search functionality is often missing or ignores the time axis. Time-travel search alleviates this shortcoming by enriching keyword queries with a time-context of interest. In order to be effective, time-travel queries require historical {P}age{R}ank scores. In this paper, we address this requirement and propose rank synopses as a novel structure to compactly represent and reconstruct historical {P}age{R}ank scores. Rank synopses can reconstruct the {P}age{R}ank score of a web page as of any point during its lifetime, even in the absence of a snapshot of the {W}eb as of that time. We further devise a normalization scheme for {P}age{R}ank scores to make them comparable across different graphs. Through a comprehensive evaluation over different datasets, we demonstrate the accuracy and space-economy of the proposed methods.