Document (#24388)

Author
Rapke, K.
Title
Automatische Indexierung von Volltexten für die Gruner+Jahr Pressedatenbank
Source
nfd Information - Wissenschaft und Praxis. 52(2001) H.5, S.251-262
Year
2001
Abstract
Retrieval Tests sind die anerkannteste Methode, um neue Verfahren der Inhaltserschließung gegenüber traditionellen Verfahren zu rechtfertigen. Im Rahmen einer Diplomarbeit wurden zwei grundsätzlich unterschiedliche Systeme der automatischen inhaltlichen Erschließung anhand der Pressedatenbank des Verlagshauses Gruner + Jahr (G+J) getestet und evaluiert. Untersucht wurde dabei natürlichsprachliches Retrieval im Vergleich zu Booleschem Retrieval. Bei den beiden Systemen handelt es sich zum einen um Autonomy von Autonomy Inc. und DocCat, das von IBM an die Datenbankstruktur der G+J Pressedatenbank angepasst wurde. Ersteres ist ein auf natürlichsprachlichem Retrieval basierendes, probabilistisches System. DocCat demgegenüber basiert auf Booleschem Retrieval und ist ein lernendes System, das auf Grund einer intellektuell erstellten Trainingsvorlage indexiert. Methodisch geht die Evaluation vom realen Anwendungskontext der Textdokumentation von G+J aus. Die Tests werden sowohl unter statistischen wie auch qualitativen Gesichtspunkten bewertet. Ein Ergebnis der Tests ist, dass DocCat einige Mängel gegenüber der intellektuellen Inhaltserschließung aufweist, die noch behoben werden müssen, während das natürlichsprachliche Retrieval von Autonomy in diesem Rahmen und für die speziellen Anforderungen der G+J Textdokumentation so nicht einsetzbar ist
Theme
Automatisches Indexieren
Retrievalstudien
Computerlinguistik
Dokumentenmanagement
Object
Gruner+Jahr
DocCat
Autonomy
DigDok

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  5. Bender, N.: Termindaten und Pressedokumentation : Untersuchungen zu Funktion, Nutzen und Optimierung der Ereignisdatenbank bei Gruner + Jahr (1997) 0.14
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