Search (68 results, page 2 of 4)

Sperling, R.: Anlage von Literaturreferenzen für Onlineressourcen auf einer virtuellen Lernplattform (2004) 0.01

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Date: 26.11.2005 18:39:22

Semenova, E.: Erstellung einer Dokumentationssprache : Am Beispiel der Oberbegriffsdatei für die Sonderausstellungsdatenbank im Institut für Museumskunde, Berlin (2004) 0.01

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Date: 28.11.1999 13:32:29

Schobert, D.: ¬Die Bibliothek der Deutschen Geologische Gesellschaft unter dem besonderen Aspekt der Sacherschließung ihrer Kartensammlungen : Geschichte, Stand und Perspektiven (1993) 0.01

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Date: 6.12.1996 19:56:29

Nicoletti, M.: Automatische Indexierung (2001) 0.01

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Date: 29. 9.2017 12:00:04

Hartwieg, U.: ¬Die nationalbibliographische Situation im 18. Jahrhundert : Vorüberlegungen zur Verzeichnung der deutschen Drucke in einem VD18 (1999) 0.01

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Date: 18. 6.1999 9:22:36

Milanesi, C.: Möglichkeiten der Kooperation im Rahmen von Subject Gateways : das Euler-Projekt im Vergleich mit weiteren europäischen Projekten (2001) 0.01

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Date: 22. 6.2002 19:41:59

Kumpe, D.: Methoden zur automatischen Indexierung von Dokumenten (2006) 0.01
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Abstract

Diese Diplomarbeit handelt von der Indexierung von unstrukturierten und natürlichsprachigen Dokumenten. Die zunehmende Informationsflut und die Zahl an veröffentlichten wissenschaftlichen Berichten und Büchern machen eine maschinelle inhaltliche Erschließung notwendig. Um die Anforderungen hierfür besser zu verstehen, werden Probleme der natürlichsprachigen schriftlichen Kommunikation untersucht. Die manuellen Techniken der Indexierung und die Dokumentationssprachen werden vorgestellt. Die Indexierung wird thematisch in den Bereich der inhaltlichen Erschließung und des Information Retrieval eingeordnet. Weiterhin werden Vor- und Nachteile von ausgesuchten Algorithmen untersucht und Softwareprodukte im Bereich des Information Retrieval auf ihre Arbeitsweise hin evaluiert. Anhand von Beispiel-Dokumenten werden die Ergebnisse einzelner Verfahren vorgestellt. Mithilfe des Projekts European Migration Network werden Probleme und grundlegende Anforderungen an die Durchführung einer inhaltlichen Erschließung identifiziert und Lösungsmöglichkeiten vorgeschlagen.

Gordon, T.J.; Helmer-Hirschberg, O.: Report on a long-range forecasting study (1964) 0.01

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Date: 22. 6.2018 13:24:08
22. 6.2018 13:54:52

Grünberg, H.: ¬Die Sacherschließung auf der Grundlage der Regensburger Aufstellungssystematiken in einer wissenschaftlichen Spezialbibliothek : dargestellt am Beispiel der Fachbibliothek Geodäsie / Kartographie / Geographie an der Technischen Universität Dresden (1993) 0.01

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Date: 6.12.1996 19:56:29

John, M.: ¬Die Sacherschließung auf der Grundlage der Regensburger Aufstellungssystematiken und der RSWK in einer wissenschaftlichen Spezialbibliothek (1993) 0.01

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Date: 6.12.1996 19:56:29

Küchler, J.: ¬Die Sacherschließung auf der Grundlage der Regensburger Aufstellungssystematiken in einer wissenschaftlichen Spezialbibliothek : dargestellt am Beispiel der Fachbibliothek Informatik der UB Dresden (1993) 0.01

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Date: 6.12.1996 19:56:29

Müller, G.: ¬Die Sacherschließung auf der Grundlage der Regensburger Aufstellungssystematiken : dargestellt am Beispiel der Zweigbibliothek der Philosophie, Ästhetik und Kulturwissenschaft der Universitätsbibliothek der Humboldt Universität zu Berlin (1993) 0.01

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Date: 6.12.1996 19:56:29

Fellermaier, B.: Virtuelle Bibliothek : Konzepte und Forschungsprojekte (1997) 0.01

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Date: 29. 8.1997 10:18:10

Krömmelbein, U.: linguistische und fachwissenschaftliche Gesichtspunkte. Eine vergleichende Untersuchung der Regeln für die Schlagwortvergabe der Deutschen Bibliothek, RSWK, Voll-PRECIS und Kurz-PRECIS : Schlagwort-Syntax (1983) 0.01

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Date: 6. 1.1999 9:29:10

Haller, S.H.M.: Mappingverfahren zur Wissensorganisation (2002) 0.01

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Date: 30. 5.2010 16:22:35

Sebastian, Y.: Literature-based discovery by learning heterogeneous bibliographic information networks (2017) 0.01
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Abstract

Literature-based discovery (LBD) research aims at finding effective computational methods for predicting previously unknown connections between clusters of research papers from disparate research areas. Existing methods encompass two general approaches. The first approach searches for these unknown connections by examining the textual contents of research papers. In addition to the existing textual features, the second approach incorporates structural features of scientific literatures, such as citation structures. These approaches, however, have not considered research papers' latent bibliographic metadata structures as important features that can be used for predicting previously unknown relationships between them. This thesis investigates a new graph-based LBD method that exploits the latent bibliographic metadata connections between pairs of research papers. The heterogeneous bibliographic information network is proposed as an efficient graph-based data structure for modeling the complex relationships between these metadata. In contrast to previous approaches, this method seamlessly combines textual and citation information in the form of pathbased metadata features for predicting future co-citation links between research papers from disparate research fields. The results reported in this thesis provide evidence that the method is effective for reconstructing the historical literature-based discovery hypotheses. This thesis also investigates the effects of semantic modeling and topic modeling on the performance of the proposed method. For semantic modeling, a general-purpose word sense disambiguation technique is proposed to reduce the lexical ambiguity in the title and abstract of research papers. The experimental results suggest that the reduced lexical ambiguity did not necessarily lead to a better performance of the method. This thesis discusses some of the possible contributing factors to these results. Finally, topic modeling is used for learning the latent topical relations between research papers. The learned topic model is incorporated into the heterogeneous bibliographic information network graph and allows new predictive features to be learned. The results in this thesis suggest that topic modeling improves the performance of the proposed method by increasing the overall accuracy for predicting the future co-citation links between disparate research papers.

Hoffmann, R.: Mailinglisten für den bibliothekarischen Informationsdienst am Beispiel von RABE (2000) 0.01

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Date: 22. 2.2000 10:25:05
Series: Kölner Arbeitspapiere zur Bibliotheks- und Informationswissenschaft; Bd.22

Mundt, M.: Vergleichende Untersuchung der Abfrageoberflächen bibliographischr Datenbanken und eines Metainformationssystems, dargestellt am Beispiel von Datenbanksystemen des Umweltbundesamtes (1999) 0.01

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Date: 28.11.1999 13:32:29

Schneider, W.: ¬Ein verteiltes Bibliotheks-Informationssystem auf Basis des Z39.50 Protokolls (1999) 0.01

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Date: 17. 5.2000 20:29:41

Jezior, T.: Adaption und Integration von Suchmaschinentechnologie in mor(!)dernen OPACs (2013) 0.01

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Date: 18.10.2015 10:29:56

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