Literatur zur Informationserschließung

Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.

© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 28. April 2022)

Suchergebnisse

• 1
  Peponakis, M. ; Mastora, A. ; Kapidakis, S. ; Doerr, M.: Expressiveness and machine processability of Knowledge Organization Systems (KOS) : an analysis of concepts and relations.
  In: International journal on digital libraries. 20(2020) no.4, S.433-452.
  
  Abstract: This study considers the expressiveness (that is the expressive power or expressivity) of different types of Knowledge Organization Systems (KOS) and discusses its potential to be machine-processable in the context of the Semantic Web. For this purpose, the theoretical foundations of KOS are reviewed based on conceptualizations introduced by the Functional Requirements for Subject Authority Data (FRSAD) and the Simple Knowledge Organization System (SKOS); natural language processing techniques are also implemented. Applying a comparative analysis, the dataset comprises a thesaurus (Eurovoc), a subject headings system (LCSH) and a classification scheme (DDC). These are compared with an ontology (CIDOC-CRM) by focusing on how they define and handle concepts and relations. It was observed that LCSH and DDC focus on the formalism of character strings (nomens) rather than on the modelling of semantics; their definition of what constitutes a concept is quite fuzzy, and they comprise a large number of complex concepts. By contrast, thesauri have a coherent definition of what constitutes a concept, and apply a systematic approach to the modelling of relations. Ontologies explicitly define diverse types of relations, and are by their nature machine-processable. The paper concludes that the potential of both the expressiveness and machine processability of each KOS is extensively regulated by its structural rules. It is harder to represent subject headings and classification schemes as semantic networks with nodes and arcs, while thesauri are more suitable for such a representation. In addition, a paradigm shift is revealed which focuses on the modelling of relations between concepts, rather than the concepts themselves.
  
  Inhalt: Vgl.: https://doi.org/10.1007/s00799-019-00269-0. Vgl. auch: https://www.researchgate.net/publication/339873131_Expressiveness_and_machine_processability_of_Knowledge_Organization_Systems_KOS_An_analysis_of_concepts_and_relations.
  
  Themenfeld: Semantische Interoperabilität ; Wissensrepräsentation
  Objekt: FRSAD ; SKOS ; DDC ; CIDOC-CRM ; LCSH ; Eurovoc
  
  
• 2
  Peponakis, M.: Conceptualizations of cataloguing object : a critique on current perceptions on FRBR Group 1 entities.
  In: Cataloging and classification quarterly. 50(2012) no.5/7, S.587-602.
  
  Abstract: Libraries face a double challenge in the digital age: both the describing framework and the describing object are under change. FRBR attempts to generate a coherent theory and yield a new Paradigm of cataloging. This study deploys current conceptualizations of the FRBR Group 1 entities within the FRBR models family with a view to semantic interoperability. FRBR cannot be considered as simple metadata describing a specific resource but more like some kind of knowledge related to the resource. This study reveals that there are different perspectives of what is introduced by FRBR as the cataloging object in the context of various interpretations of the model, namely RDA, FRBRization projects and FRBRoo.
  
  Inhalt: Contribution to a special issue "The FRBR family of conceptual models: toward a linked future"
  
  Themenfeld: Formalerschließung
  Objekt: FRBR