Document (#1461)

Author

Panyr, J.

Title

Probabilistische Modelle in Information-Retrieval-Systemen

Source

Nachrichten für Dokumentation. 37(1986), S.60-66

Year

1986

Abstract

Ausgehend vom probabilistischen Relevanzbegriff werden die wichtigsten Ansätze der probabilistischen Indexierungsstrategien (einschließlich der nutztheoretischen Indexierung) aufgezeigt und mit dem statistischen Indexierungsmodell von Harter verglichen. Das probabilistische Retrievalmodell, das auf der Termunabhängigkeitsannahme basiert, wird detailliert erklärt und in Kontrast zum Termunabhängigkeitsmodell gestellt. Dabei wird auf die Probleme der Bestimmung der in den o.g. Strategien vorgeschlagenen Termgewichte hingewiesen. Zum Schluß wird noch auf die Beziehung der behandelten probabilistischen Modelle kurz eingegangen

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