Search (328 results, page 17 of 17)

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Source

Journal of the Association for Information Science and Technology. 68(2017) no.3, S.724-738

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Source

Journal of the Association for Information Science and Technology. 68(2017) no.3, S.681-694

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Content

Aus den so festgelegten Beziehungen zwischen den verlinkten Begriffen sollen Computer automatisch sinnvolle Antworten auf komplexere Anfragen generieren können; z.B. eine Liste erzeugen, in der alle Länder von Afrika aufgeführt sind. Die Ländernamen führen als Link zurück zu dem Eintrag, in dem sie stehen - dem Artikel zum Land, für das man sich interessiert. Aus informationswissenschaftlicher Sicht ist das Informationsergebnis, das die neue Technologie produziert, relativ simpel. Aus sozialwissenschaftlicher Sicht steckt darin aber ein riesiges Potential zur Verbesserung der Bereitstellung von enzyklopädischer Information und Wissen für Menschen auf der ganzen Welt. Spannend ist auch die durch Semantic MediaWiki gegebene Möglichkeit der automatischen Zusammenführung von Informationen, die in den verschiedenen Wiki-Einträgen verteilt sind, bei einer hohen Konsistenz der Ergebnisse. Durch die feststehenden Beziehungen zwischen den Links enthält die automatisch erzeugte Liste nach Angaben der Karlsruher Forscher immer die gleichen Daten, egal, von welcher Seite aus man sie abruft. Die Suchmaschine holt sich die Bevölkerungszahl von Ägypten immer vom festgelegten Ägypten-Eintrag, so dass keine unterschiedlichen Zahlen in der Wiki-Landschaft kursieren können. Ein mit Semantic MediaWiki erstellter Testeintrag zu Deutschland kann unter http://ontoworld.org/index.php/Germany eingesehen werden. Die Faktenbox im unteren Teil des Eintrags zeigt an, was der "Eintrag" der Suchmaschine an Wissen über Deutschland anbieten kann. Diese Ergebnisse werden auch in dem Datenbeschreibungsstandard RDF angeboten. Mehr als das, was in der Faktenbox steht, kann der Eintrag nicht an die Suchmaschine abgeben."

Source

Information - Wissenschaft und Praxis. 57(2006) H.6/7, S.372

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Source

Information und Sprache: Beiträge zu Informationswissenschaft, Computerlinguistik, Bibliothekswesen und verwandten Fächern. Festschrift für Harald H. Zimmermann. Herausgegeben von Ilse Harms, Heinz-Dirk Luckhardt und Hans W. Giessen

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Source

Journal of digital information. 4(2004), no.4

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Abstract

This chapter describes two case studies conducted by the Swiss Life insurance group with the objective of proving the practical applicability and superiority of ontology-based knowledge management over classical approaches based on text retrieval technologies. The first case study in the domain of skills management uses manually constructed ontologies about skills, job functions and education. The purpose of the system is to give support for finding employees with certain skills. The ontologies are used to ensure that the user description of skills and the machine-held index of skills and people use the same vocabulary. The use of a shared vocabulary increases the performance of such a system significantly. The second case study aims at improving content-oriented access to passages of a 1000 page document about the International Accounting Standard on the corporate intranet. To this end, an ontology was automatically extracted from the document. It can be used to reformulate queries that turned out not to deliver the intended results. Since the ontology was automatically built, it is of a rather simple structure, consisting of weighted semantic associations between the relevant concepts in the document. We therefore call it a 'lightweight ontology'. The two case studies cover quite different aspects of using ontologies in knowledge management applications. Whereas in the second case study an ontology was automatically derived from a search space to improve information retrieval, in the first skills management case study the ontology itself introduces a structured search space. In one case study we gathered experience in building an ontology manually, while the challenge of the other case study was automatic ontology creation. A number of the novel Semantic Web-based tools described elsewhere in this book were used to build the two systems and both case studies described have led to projects to deploy live systems within Swiss Life.

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Abstract

We refine the problem statement into three research questions. The first two focus on the problem of conversion of a vocabulary to a Semantic Web representation from its original format. Conversion of a vocabulary to a representation in a Semantic Web language is necessary to make the vocabulary available to SemanticWeb applications. In the last question we focus on integration of collection metadata schemas in a way that allows for vocabulary representations as produced by our methods. Academisch proefschrift ter verkrijging van de graad Doctor aan de Vrije Universiteit Amsterdam, Dutch Research School for Information and Knowledge Systems.

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Source

Information - Wissenschaft und Praxis. 55(2004) H.3, S.139-142