Search (31 results, page 1 of 2)

  • × theme_ss:"Semantische Interoperabilität"
  • × year_i:[2000 TO 2010}
  1. Vetere, G.; Lenzerini, M.: Models for semantic interoperability in service-oriented architectures (2005) 0.10 
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    Content
    Vgl.: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=5386707&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D5386707.
  2. Haslhofer, B.: Uniform SPARQL access to interlinked (digital library) sources (2007) 0.02 
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    Date
    26.12.2011 13:22:46
  3. Stempfhuber, M.: Verbesserung der Zugänglichkeit heterogen erschlossener Informationen (2008) 0.02 
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    Abstract
    Aufgrund der durch die Nutzer verstärkt geforderten Zusammenführung bislang verteilt vorliegender Informationssammlungen an einer Stelle tritt in der Praxis ein Phänomen zu Tage, das mit Blick auf die einzelne Informationssammlung in vielen Fällen bereits als gelöst betrachtet wurde: Heterogenität. Es zeigt sich, dass Standardisierungsansätze oft zu kurz greifen, da sie für die praktische Anwendung keine Modelle bieten, die trotz Standardisierungsbemühungen verbleibenden Unterschiede effizient und wirksam zu behandeln. Der Artikel stellt anhand zweier Beispiele aus dem Bereich der Fachinformation Lösungswege vor, wie in der Praxis Heterogenität zwischen Informationssammlungen auf semantischer Ebene behandelt werden kann. Sie tritt immer dann auf, wenn mehrere Quellen gleichzeitig durchsucht werden sollen, diese aber mit unterschiedlichen Indexierungsvokabularen erschlossen wurden. Am Beispiel statistischer Daten für die Marktforschung und wissenschaftlicher Literaturinformationssysteme werden Lösungen vorgestellt, mit dem Erschließungsvokabulare so aufeinander abgebildet werden können, dass sie Nutzer sowohl bei der Anfrageformulierung unterstützen können als auch bei der Suche eine für den Nutzer transparente und automatische Anfragetransformation ermöglichen. Ziel dieser Verfahren ist es, die kognitive Last beim Nutzer währender der Anfrageformulierung zu verringern und den Recall von Suchen in heterogen erschlossenen Informationssammlungen zu erhöhen.
  4. Levergood, B.; Farrenkopf, S.; Frasnelli, E.: ¬The specification of the language of the field and interoperability : cross-language access to catalogues and online libraries (CACAO) (2008) 0.02 
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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
  5. Garcia Marco, F.J.: Compatibility & heterogeneity in knowledge organization : some reflections around a case study in the field of consumer information (2008) 0.01 
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    Abstract
    A case study in compatibility and heterogeneity of knowledge organization (KO) systems and processes is presented. It is based in the experience of the author in the field of information for consumer protection, a good example of the emerging transdisciplinary applied social sciences. The activities and knowledge organization problems and solutions of the Aragonian Consumers' Information and Documentation Centre are described and analyzed. Six assertions can be concluded: a) heterogeneity and compatibility are certainly an inherent problem in knowledge organization and also in practical domains; b) knowledge organization is also a social task, not only a lögical one; c) knowledge organization is affected by economical and efficiency considerations; d) knowledge organization is at the heart of Knowledge Management; e) identifying and maintaining the focus in interdisciplinary fields is a must; f the different knowledge organization tools of a institution must be considered as an integrated system, pursuing a unifying model.
    Date
    16. 3.2008 18:22:50
  6. Lauser, B.; Johannsen, G.; Caracciolo, C.; Hage, W.R. van; Keizer, J.; Mayr, P.: Comparing human and automatic thesaurus mapping approaches in the agricultural domain (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
  7. Woldering, B.: ¬Die Europäische Digitale Bibliothek nimmt Gestalt an (2007) 0.01 
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    Date
    22. 2.2009 19:10:56
  8. Binz, V.; Rühle, S.: KIM - Das Kompetenzzentrum Interoperable Metadaten (2009) 0.01 
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    Abstract
    Die Interoperabilität von Metadaten ist eine wichtige Voraussetzung für das Generieren von Information und Wissen in einer vernetzten Welt. Aus diesem Grund entstehen seit Mitte der Neunziger Jahre verschiedene Standards mit dem Ziel, die Interoperabilität von Metadaten zu erhöhen. Genannt seien hier vor allem DCMES und DCAM, RDF und SKOS. Aufgabe von KIM ist es, diese Entwicklungen zu begleiten und in die deutschsprachige Community zu tragen. Dabei bietet KIM neben reinen Informationsangeboten (z. B. in Form von Übersetzungen, Vorträgen und Handreichungen) auch konkrete Unterstützung in Form von Schulungen und Beratungen an.
  9. Liang, A.; Salokhe, G.; Sini, M.; Keizer, J.: Towards an infrastructure for semantic applications : methodologies for semantic integration of heterogeneous resources (2006) 0.01 
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    Abstract
    The semantic heterogeneity presented by Web information in the Agricultural domain presents tremendous information retrieval challenges. This article presents work taking place at the Food and Agriculture Organizations (FAO) which addresses this challenge. Based on the analysis of resources in the domain of agriculture, this paper proposes (a) an application profile (AP) for dealing with the problem of heterogeneity originating from differences in terminologies, domain coverage, and domain modelling, and (b) a root application ontology (AAO) based on the application profile which can serve as a basis for extending knowledge of the domain. The paper explains how even a small investment in the enhancement of relations between vocabularies, both metadata and domain-specific, yields a relatively large return on investment.
  10. Wang, S.; Isaac, A.; Schopman, B.; Schlobach, S.; Meij, L. van der: Matching multilingual subject vocabularies (2009) 0.01 
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  11. Stempfhuber, M.; Zapilko, B.: Modelling text-fact-integration in digital libraries (2009) 0.01 
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  12. Dini, L.: CACAO : multilingual access to bibliographic records (2007) 0.01 
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    Content
    Vortrag anlässlich des Workshops: "Extending the multilingual capacity of The European Library in the EDL project Stockholm, Swedish National Library, 22-23 November 2007".
  13. Boteram, F.; Hubrich, J.: Towards a comprehensive international Knowledge Organization System (2008) 0.01 
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    Date
    22. 9.2008 19:30:41
  14. Mayr, P.: Re-Ranking auf Basis von Bradfordizing für die verteilte Suche in Digitalen Bibliotheken (2009) 0.01 
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    Abstract
    Trotz großer Dokumentmengen für datenbankübergreifende Literaturrecherchen erwarten akademische Nutzer einen möglichst hohen Anteil an relevanten und qualitativen Dokumenten in den Trefferergebnissen. Insbesondere die Reihenfolge und Struktur der gelisteten Ergebnisse (Ranking) spielt, neben dem direkten Volltextzugriff auf die Dokumente, inzwischen eine entscheidende Rolle beim Design von Suchsystemen. Nutzer erwarten weiterhin flexible Informationssysteme, die es unter anderem zulassen, Einfluss auf das Ranking der Dokumente zu nehmen bzw. alternative Rankingverfahren zu verwenden. In dieser Arbeit werden zwei Mehrwertverfahren für Suchsysteme vorgestellt, die die typischen Probleme bei der Recherche nach wissenschaftlicher Literatur behandeln und damit die Recherchesituation messbar verbessern können. Die beiden Mehrwertdienste semantische Heterogenitätsbehandlung am Beispiel Crosskonkordanzen und Re-Ranking auf Basis von Bradfordizing, die in unterschiedlichen Phasen der Suche zum Einsatz kommen, werden hier ausführlich beschrieben und im empirischen Teil der Arbeit bzgl. der Effektivität für typische fachbezogene Recherchen evaluiert. Vorrangiges Ziel der Promotion ist es, zu untersuchen, ob das hier vorgestellte alternative Re-Rankingverfahren Bradfordizing im Anwendungsbereich bibliographischer Datenbanken zum einen operabel ist und zum anderen voraussichtlich gewinnbringend in Informationssystemen eingesetzt und dem Nutzer angeboten werden kann. Für die Tests wurden Fragestellungen und Daten aus zwei Evaluationsprojekten (CLEF und KoMoHe) verwendet. Die intellektuell bewerteten Dokumente stammen aus insgesamt sieben wissenschaftlichen Fachdatenbanken der Fächer Sozialwissenschaften, Politikwissenschaft, Wirtschaftswissenschaften, Psychologie und Medizin. Die Evaluation der Crosskonkordanzen (insgesamt 82 Fragestellungen) zeigt, dass sich die Retrievalergebnisse signifikant für alle Crosskonkordanzen verbessern; es zeigt sich zudem, dass interdisziplinäre Crosskonkordanzen den stärksten (positiven) Effekt auf die Suchergebnisse haben. Die Evaluation des Re-Ranking nach Bradfordizing (insgesamt 164 Fragestellungen) zeigt, dass die Dokumente der Kernzone (Kernzeitschriften) für die meisten Testreihen eine signifikant höhere Precision als Dokumente der Zone 2 und Zone 3 (Peripheriezeitschriften) ergeben. Sowohl für Zeitschriften als auch für Monographien kann dieser Relevanzvorteil nach Bradfordizing auf einer sehr breiten Basis von Themen und Fragestellungen an zwei unabhängigen Dokumentkorpora empirisch nachgewiesen werden.
  15. Ehrig, M.; Studer, R.: Wissensvernetzung durch Ontologien (2006) 0.00 
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    Abstract
    In der Informatik sind Ontologien formale Modelle eines Anwendungsbereiches, die die Kommunikation zwischen menschlichen und/oder maschinellen Akteuren unterstützen und damit den Austausch und das Teilen von Wissen in Unternehmen erleichtern. Ontologien zur strukturierten Darstellung von Wissen zu nutzen hat deshalb in den letzten Jahren zunehmende Verbreitung gefunden. Schon heute existieren weltweit tausende Ontologien. Um Interoperabilität zwischen darauf aufbauenden Softwareagenten oder Webservices zu ermöglichen, ist die semantische Integration der Ontologien eine zwingendnotwendige Vorraussetzung. Wie man sieh leicht verdeutlichen kann, ist die rein manuelle Erstellung der Abbildungen ab einer bestimmten Größe. Komplexität und Veränderungsrate der Ontologien nicht mehr ohne weiteres möglich. Automatische oder semiautomatische Technologien müssen den Nutzer darin unterstützen. Das Integrationsproblem beschäftigt Forschung und Industrie schon seit vielen Jahren z. B. im Bereich der Datenbankintegration. Neu ist jedoch die Möglichkeit komplexe semantische Informationen. wie sie in Ontologien vorhanden sind, einzubeziehen. Zur Ontologieintegration wird in diesem Kapitel ein sechsstufiger genereller Prozess basierend auf den semantischen Strukturen eingeführt. Erweiterungen beschäftigen sich mit der Effizienz oder der optimalen Nutzereinbindung in diesen Prozess. Außerdem werden zwei Anwendungen vorgestellt, in denen dieser Prozess erfolgreich umgesetzt wurde. In einem abschließenden Fazit werden neue aktuelle Trends angesprochen. Da die Ansätze prinzipiell auf jedes Schema übertragbar sind, das eine semantische Basis enthält, geht der Einsatzbereich dieser Forschung weit über reine Ontologieanwendungen hinaus.
  16. Tang, J.; Liang, B.-Y.; Li, J.-Z.: Toward detecting mapping strategies for ontology interoperability (2005) 0.00 
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  17. Mayr, P.; Petras, V.; Walter, A.-K.: Results from a German terminology mapping effort : intra- and interdisciplinary cross-concordances between controlled vocabularies (2007) 0.00 
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    Abstract
    In 2004, the German Federal Ministry for Education and Research funded a major terminology mapping initiative at the GESIS Social Science Information Centre in Bonn (GESIS-IZ), which will find its conclusion this year. The task of this terminology mapping initiative was to organize, create and manage 'crossconcordances' between major controlled vocabularies (thesauri, classification systems, subject heading lists) centred around the social sciences but quickly extending to other subject areas. Cross-concordances are intellectually (manually) created crosswalks that determine equivalence, hierarchy, and association relations between terms from two controlled vocabularies. Most vocabularies have been related bilaterally, that is, there is a cross-concordance relating terms from vocabulary A to vocabulary B as well as a cross-concordance relating terms from vocabulary B to vocabulary A (bilateral relations are not necessarily symmetrical). Till August 2007, 24 controlled vocabularies from 11 disciplines will be connected with vocabulary sizes ranging from 2,000 - 17,000 terms per vocabulary. To date more than 260,000 relations are generated. A database including all vocabularies and cross-concordances was built and a 'heterogeneity service' developed, a web service, which makes the cross-concordances available for other applications. Many cross-concordances are already implemented and utilized for the German Social Science Information Portal Sowiport (www.sowiport.de), which searches bibliographical and other information resources (incl. 13 databases with 10 different vocabularies and ca. 2.5 million references).
  18. Landry, P.: MACS: multilingual access to subject and link management : Extending the Multilingual Capacity of TEL in the EDL Project (2007) 0.00 
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    Content
    Vortrag anlässlich des Workshops: "Extending the multilingual capacity of The European Library in the EDL project Stockholm, Swedish National Library, 22-23 November 2007".
  19. Faro, S.; Francesconi, E.; Marinai, E.; Sandrucci, V.: Report on execution and results of the interoperability tests (2008) 0.00 
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    Date
    7.11.2008 10:40:22
  20. Hubrich, J.: CrissCross: SWD-DDC-Mapping (2008) 0.00 
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    Date
    22. 8.2009 10:35:21

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