Document (#18733)

Author

Baumgarten, C.

Title

Probabilistische Modellierung der effizienten Informationssuche in verteilten multimedialen Dokumentbeständen durch Einschränkung des Suchraums

Source

Hypertext - Information Retrieval - Multimedia '97: Theorien, Modelle und Implementierungen integrierter elektronischer Informationssysteme. Proceedings HIM '97. Hrsg.: N. Fuhr u.a

Imprint

Konstanz : Universitätsverlag

Year

1997

Pages

S.121-134

Series

Schriften zur Informationswissenschaft; Bd.30

Abstract

Ein Modell für die Informationssuche in einer verteilten Multimedia-Dokumentkollektion wird vorgestellt. Das Modell basiert auf dem probabilistischen Anordnungsprinzip. NAch der Berechnung individueller Ranglisten zu den einzelnen Subkollektionen werden diese schrittweise in eine finale Rangliste überführt, in der die Dokumente gemäß ihrer Relevanzwahrscheinlichkeiten geordnet sind. Dabei können die Dokumente (bzw. Dokumentpassagen, falls es sich um multimediale Dokumente handelt) aus verschiedenen Subkollektionen mit verschiedenen Verfahren indexiert werden. Auch lassen sich unterschiedliche probabilistische Verfahren zur Berechnung der subkollektionsspezifischen Ranglisten einsetzen. Damit wird die Integration von Dokumenten beliebigen Typs unterstützt. Übredies ist das zugrundeliegende Datenvolumen beliebig skalierbar. Das Modell wird durch ein Kriterium zur Einschränkung des Suchraums erweitert, um die effiziente Informationssuche zu ermöglichen. Dabei werden verschiedene Kostenfaktoren berücksichtigt

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