Search (21 results, page 1 of 2)

  • × theme_ss:"Wissensrepräsentation"
  • × year_i:[2000 TO 2010}
  1. Weiermann, S.L.: Semantische Netze und Begriffsdeskription in der Wissensrepräsentation (2000) 0.04
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    BK
    18.00 Einzelne Sprachen und Literaturen allgemein
    Classification
    18.00 Einzelne Sprachen und Literaturen allgemein
  2. Stuckenschmidt, H.; Harmelen, F. van: Information sharing on the semantic web (2005) 0.03
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    Classification
    ST 205 Informatik / Monographien / Vernetzung, verteilte Systeme / Internet allgemein
    RVK
    ST 205 Informatik / Monographien / Vernetzung, verteilte Systeme / Internet allgemein
  3. Stojanovic, N.: Ontology-based Information Retrieval : methods and tools for cooperative query answering (2005) 0.03
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    Content
    Vgl.: http%3A%2F%2Fdigbib.ubka.uni-karlsruhe.de%2Fvolltexte%2Fdocuments%2F1627&ei=tAtYUYrBNoHKtQb3l4GYBw&usg=AFQjCNHeaxKkKU3-u54LWxMNYGXaaDLCGw&sig2=8WykXWQoDKjDSdGtAakH2Q&bvm=bv.44442042,d.Yms.
  4. Tudhope, D.; Hodge, G.: Terminology registries (2007) 0.02
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    Date
    26.12.2011 13:22:07
  5. Haller, S.H.M.: Mappingverfahren zur Wissensorganisation (2002) 0.02
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    Date
    30. 5.2010 16:22:35
  6. Schmude, A.N.: Ontologiebasierte Suche und Navigation in webbasierten Informationssystemen : am Beispiel Bürgerinformationsdienste (2004) 0.02
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    Abstract
    Webbasierte Informationssysteme werden heute von einer Vielzahl unterschiedlicher Organisationen angeboten, mit ganz verschiedenen Zielsetzungen. Die technischen Herausforderungen bzgl. Datenhaltung, Pflege der Informationen und Anbindung an das Internet scheinen gelöst. Das Auffinden bestimmter Informationen stellt für viele Nutzer aber dennoch eine große Herausforderung dar. Das gilt für das WWW (WorldWide Web ) als Ganzes, wie auch für viele einzelne webbasierte Informationssysteme. Grund dafür sind im Wesentlichen die nach wie vor ungenügenden Benutzungs-schnittstellen. Heutig gängige webbasierte Informationssysteme bieten Nutzern meist neben einer Navigation die Möglichkeit, Informationen durch das Absenden einer Suchanfrage zu suchen. Beide Strategien, also die Suche und die Navigation, weisen jeweils eigene Probleme in der Umsetzung auf, die es verhindern, dass Nutzer die gewünschte Information einfach auffinden können. Oftmals werden Suchanfragen unspezifisch und allgemein gehalten vorgetragen. Wird eine solche Anfrage mit einer großen Zusammenstellung von Daten beantwortet, man denke nur an Suchergebnisse von Suchmaschinen mit tausenden Treffern, und damit tausenden von Nieten, kann sich schnell Frust einstellen. Aber auch heutige Navigationen sind nicht geeignet, es dem Nutzer so einfach wie möglich zu machen. Sie beschränken sich meist auf Begriffshierarchien. Der Informationsraum wird also in Ober- und Unterklassen gegliedert und die Informationsobjekte den Ebenen zugeordnet. Eine solche Aufteilung kann für den einen sinnvoll und verständlich sein, andere aber in die Irre führen. Zudem lassen sich Begriffe nur anhand zweier Beziehungen, nämlich Ober- und Unterbegriff, strukturieren. Begriffe und Konzepte vieler Themengebiete weisen aber weitere Beziehungen auf, wie "gehört zu", "arbeitet zusammen mit", "entwickelte" um nur ein paar Beispiele zu nennen. Semantische Netze bzw. Ontologien können eine solche Verknüpfung durch die Beschreibung ebendieser Beziehungen leisten. Die Ausgangsüberlegung dieser Arbeit ist es, die Strukturierung des Informationsraums mit Hilfe einer Ontologie vorzunehmen. Diese erweiterte Strukturierung soll sowohl für die Suche als auch für die Navigation genutzt werden, um die Auffindbarkeit von Information zu verbessern. Eine Suchfunktionalität müsste sich nicht mehr nur auf eine wortbasierte Suche verlassen, sondern könnte das Beziehungsgeflecht nutzen. Die Navigation wiederum könnte die Beziehungen explizit machen und dadurch Nutzern helfen, den Informationsraum zu verstehen und dadurch einfacher zielgerichtet zu der gewünschten Information zu navigieren. Als Untersuchungsgegenstand werden in dieser Arbeit Bürgerinformationssysteme betrachtet. Die Anwendungsdomäne webbasierte Bürgerinformation ist ausreichend komplex, um daran die oben angeführten Probleme untersuchen zu können. Heutige Bürgerinformationssysteme weisen, neben anderen Problemen, genau die oben beschriebenen Schwächen auf, wie sich zeigen wird.
  7. Synak, M.; Dabrowski, M.; Kruk, S.R.: Semantic Web and ontologies (2009) 0.01
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    Date
    31. 7.2010 16:58:22
  8. OWL Web Ontology Language Test Cases (2004) 0.01
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    Date
    14. 8.2011 13:33:22
  9. Fischer, D.H.: ¬Ein Lehrbeispiel für eine Ontologie : OpenCyc (2004) 0.01
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    Abstract
    Es wird ein einführender Überblick über das seit Frühjahr 2002 allgemein verfügbare Ontologiesystem OpenCyc und seine gegenwärtige Wissensbasis gegeben. Das System ist Prototyp eines logikbasierten Wissensrepräsentationssystems und der lnhalt der fortschreib-baren Wissensbasis ist eine universelle Dachontologie, die als ein Extrakt aus langjähriger Erfahrung mit ihrer Anwendung angesehen werden kann. Die Wissensrepräsentationssprache CycL von OpenCyc konkurriert mit der bisher weniger ausdrucksstarken Sprache OWL, die von den W3C-Gremien für das "Semantic Web"standardisiert wird.
  10. Priss, U.: Faceted information representation (2000) 0.01
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    Date
    22. 1.2016 17:47:06
  11. Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie (2005) 0.01
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    Date
    11. 2.2011 18:22:58
  12. Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie : Ontologie-basiertes Information-Filtering und -Retrieval mit relationalen Datenbanken (2005) 0.01
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    Date
    11. 2.2011 18:22:25
  13. Definition of the CIDOC Conceptual Reference Model (2003) 0.01
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    Date
    6. 8.2010 14:22:28
  14. Gendt, M. van; Isaac, I.; Meij, L. van der; Schlobach, S.: Semantic Web techniques for multiple views on heterogeneous collections : a case study (2006) 0.01
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    Source
    Research and advanced technology for digital libraries : 10th European conference, proceedings / ECDL 2006, Alicante, Spain, September 17 - 22, 2006
  15. Renear, A.H.; Wickett, K.M.; Urban, R.J.; Dubin, D.; Shreeves, S.L.: Collection/item metadata relationships (2008) 0.01
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    Source
    Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas
  16. Kruk, S.R.; Kruk, E.; Stankiewicz, K.: Evaluation of semantic and social technologies for digital libraries (2009) 0.01
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    Date
    1. 8.2010 12:35:22
  17. Bittner, T.; Donnelly, M.; Winter, S.: Ontology and semantic interoperability (2006) 0.01
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    Date
    3.12.2016 18:39:22
  18. Beppler, F.D.; Fonseca, F.T.; Pacheco, R.C.S.: Hermeneus: an architecture for an ontology-enabled information retrieval (2008) 0.01
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    Date
    28.11.2016 12:43:22
  19. Zeng, M.L.; Fan, W.; Lin, X.: SKOS for an integrated vocabulary structure (2008) 0.01
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    Abstract
    In order to transfer the Chinese Classified Thesaurus (CCT) into a machine-processable format and provide CCT-based Web services, a pilot study has been conducted in which a variety of selected CCT classes and mapped thesaurus entries are encoded with SKOS. OWL and RDFS are also used to encode the same contents for the purposes of feasibility and cost-benefit comparison. CCT is a collected effort led by the National Library of China. It is an integration of the national standards Chinese Library Classification (CLC) 4th edition and Chinese Thesaurus (CT). As a manually created mapping product, CCT provides for each of the classes the corresponding thesaurus terms, and vice versa. The coverage of CCT includes four major clusters: philosophy, social sciences and humanities, natural sciences and technologies, and general works. There are 22 main-classes, 52,992 sub-classes and divisions, 110,837 preferred thesaurus terms, 35,690 entry terms (non-preferred terms), and 59,738 pre-coordinated headings (Chinese Classified Thesaurus, 2005) Major challenges of encoding this large vocabulary comes from its integrated structure. CCT is a result of the combination of two structures (illustrated in Figure 1): a thesaurus that uses ISO-2788 standardized structure and a classification scheme that is basically enumerative, but provides some flexibility for several kinds of synthetic mechanisms Other challenges include the complex relationships caused by differences of granularities of two original schemes and their presentation with various levels of SKOS elements; as well as the diverse coordination of entries due to the use of auxiliary tables and pre-coordinated headings derived from combining classes, subdivisions, and thesaurus terms, which do not correspond to existing unique identifiers. The poster reports the progress, shares the sample SKOS entries, and summarizes problems identified during the SKOS encoding process. Although OWL Lite and OWL Full provide richer expressiveness, the cost-benefit issues and the final purposes of encoding CCT raise questions of using such approaches.
    Source
    Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas
  20. Müller, T.: Wissensrepräsentation mit semantischen Netzen im Bereich Luftfahrt (2006) 0.01
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    Date
    26. 9.2006 21:00:22

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