Document (#32319)

Author
Kaufmann, E.
Title
¬Das Indexieren von natürlichsprachlichen Dokumenten und die inverse Seitenhäufigkeit
Source
http://www.ifi.unizh.ch/cl/study/lizarbeiten/lizkaufmann.pdf
Year
2001
Abstract
Die Lizentiatsarbeit gibt im ersten theoretischen Teil einen Überblick über das Indexieren von Dokumenten. Sie zeigt die verschiedenen Typen von Indexen sowie die wichtigsten Aspekte bezüglich einer Indexsprache auf. Diverse manuelle und automatische Indexierungsverfahren werden präsentiert. Spezielle Aufmerksamkeit innerhalb des ersten Teils gilt den Schlagwortregistern, deren charakteristische Merkmale und Eigenheiten erörtert werden. Zusätzlich werden die gängigen Kriterien zur Bewertung von Indexen sowie die Masse zur Evaluation von Indexierungsverfahren und Indexierungsergebnissen vorgestellt. Im zweiten Teil der Arbeit werden fünf reale Bücher einer statistischen Untersuchung unterzogen. Zum einen werden die lexikalischen und syntaktischen Bestandteile der fünf Buchregister ermittelt, um den Inhalt von Schlagwortregistern zu erschliessen. Andererseits werden aus den Textausschnitten der Bücher Indexterme maschinell extrahiert und mit den Schlagworteinträgen in den Buchregistern verglichen. Das Hauptziel der Untersuchungen besteht darin, eine Indexierungsmethode, die auf linguistikorientierter Extraktion der Indexterme und Termhäufigkeitsgewichtung basiert, im Hinblick auf ihren Gebrauchswert für eine automatische Indexierung zu testen. Die Gewichtungsmethode ist die inverse Seitenhäufigkeit, eine Methode, welche von der inversen Dokumentfrequenz abgeleitet wurde, zur automatischen Erstellung von Schlagwortregistern für deutschsprachige Texte. Die Prüfung der Methode im statistischen Teil führte nicht zu zufriedenstellenden Resultaten.
Content
Lizentiatsarbeit der Philosphischen Fakultät der Universität Zürich, - Vgl. auch: http://www.ifi.unizh.ch/cl/study/lizarbeiten/lizkaufmann.pdf.
Theme
Automatisches Indexieren
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