-
Lepsky, K.: Maschinelle Indexierung von Titelaufnahmen zur Verbesserung der sachlichen Erschließung in Online-Publikumskatalogen (1994)
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- Footnote
- [Hausarbeit für den höheren Bibliotheksdienst 1993]. - Rez. in: Mitteilungsblatt VdB NW N.F. 45(1995) H.1, S.98-100 (H. Nohr); Knowledge organization 23(1996) no.1, S.50-52 (H. Schnelling)
- Pages
- V,121 S
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Glaesener, L.: Automatisches Indexieren einer informationswissenschaftlichen Datenbank mit Mehrwortgruppen (2012)
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- Date
- 11. 9.2012 19:43:22
- Pages
- III, 34, VII S
-
Klinger, K.-H.: Automatische Inhaltserschließung einer Volltextdatenbank : Machbarkeitsstudie am Beispiel der FAZ (1994)
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-
Lorenz, S.: Konzeption und prototypische Realisierung einer begriffsbasierten Texterschließung (2006)
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- Date
- 22. 3.2015 9:17:30
- Pages
- XV, 147 S
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Grün, S.: Mehrwortbegriffe und Latent Semantic Analysis : Bewertung automatisch extrahierter Mehrwortgruppen mit LSA (2017)
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- Abstract
- Die vorliegende Studie untersucht das Potenzial von Mehrwortbegriffen für das Information Retrieval. Zielsetzung der Arbeit ist es, intellektuell positiv bewertete Kandidaten mithilfe des Latent Semantic Analysis (LSA) Verfahren höher zu gewichten, als negativ bewertete Kandidaten. Die positiven Kandidaten sollen demnach bei einem Ranking im Information Retrieval bevorzugt werden. Als Kollektion wurde eine Version der sozialwissenschaftlichen GIRT-Datenbank (German Indexing and Retrieval Testdatabase) eingesetzt. Um Kandidaten für Mehrwortbegriffe zu identifizieren wurde die automatische Indexierung Lingo verwendet. Die notwendigen Kernfunktionalitäten waren Lemmatisierung, Identifizierung von Komposita, algorithmische Mehrworterkennung sowie Gewichtung von Indextermen durch das LSA-Modell. Die durch Lingo erkannten und LSAgewichteten Mehrwortkandidaten wurden evaluiert. Zuerst wurde dazu eine intellektuelle Auswahl von positiven und negativen Mehrwortkandidaten vorgenommen. Im zweiten Schritt der Evaluierung erfolgte die Berechnung der Ausbeute, um den Anteil der positiven Mehrwortkandidaten zu erhalten. Im letzten Schritt der Evaluierung wurde auf der Basis der R-Precision berechnet, wie viele positiv bewerteten Mehrwortkandidaten es an der Stelle k des Rankings geschafft haben. Die Ausbeute der positiven Mehrwortkandidaten lag bei durchschnittlich ca. 39%, während die R-Precision einen Durchschnittswert von 54% erzielte. Das LSA-Modell erzielt ein ambivalentes Ergebnis mit positiver Tendenz.
- Pages
- 67 S
-
Schröther, C.: Automatische Indexierung, Kategorisierung und inhaltliche Erschließung von Textnachrichten (2003)
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- Pages
- 114 S
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Yusuff, A.: Automatisches Indexing and Abstracting : Grundlagen und Beispiele (2002)
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- 53 S
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Pusl, F.: Automatische Indexierung an Bibliotheken - Systeme, Projekte und Einsatzmöglichkeiten (2005)
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- 134 S
-
Lohmann, H.: Verbesserung der Literatursuche durch Dokumentanreicherung und automatische Inhaltserschließung : Das Projekt 'KASCADE' an der Universitäts- und Landesbibliothek Düsseldorf (1999)
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- Pages
- V,117,14 S
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Dresler, W.: Semi-automatische Indexierungssoftware : Möglichkeiten und Grenzen am Beispiel von g.a.d.t.1 (1998)
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- 62 S
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Maas, J.: Anforderungsanalyse für den Einsatz eines (semi)automatischen Indexierungsverfahrens in der Textdokumentation des ZDF (2002)
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Nicoletti, M.: Automatische Indexierung (2001)
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Grün, S.: Bildung von Komposita-Indextermen auf der Basis einer algorithmischen Mehrwortgruppenanalyse mit Lingo (2015)
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- 69 S
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Siegmüller, R.: Verfahren der automatischen Indexierung in bibliotheksbezogenen Anwendungen : Funktion und Qualität (2007)
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Kumpe, D.: Methoden zur automatischen Indexierung von Dokumenten (2006)
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Bachfeld, S.: Möglichkeiten und Grenzen linguistischer Verfahren der automatischen Indexierung : Entwurf einer Simulation für den Einsatz im Grundstudium (2003)
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- I,46,III S
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Mittelbach, J.; Probst, M.: Möglichkeiten und Grenzen maschineller Indexierung in der Sacherschließung : Strategien für das Bibliothekssystem der Freien Universität Berlin (2006)
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Scherer, B.: Automatische Indexierung und ihre Anwendung im DFG-Projekt "Gemeinsames Portal für Bibliotheken, Archive und Museen (BAM)" (2003)
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Groß, T.: Automatische Indexierung von wirtschaftswissenschaftlichen Dokumenten : Implementierung und Evaluierung am Beispiel der Deutschen Zentralbibliothek für Wirtschaftswissenschaften (2010)
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