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  • × author_ss:"Lehmann, F."
  1. Lehmann, F.: ¬Die Mediendokumentation der Deutschen Forschungsanstalt für Luft- und Raumfahrt (DLR) : konventionelle Dokumentation und Bilddatenbank Hand in Hand (1994) 0.01 
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    Abstract
    Die Abteilung Presse- und Öffentlichkeitsarbeit der DLR bietet mit zahlreichen Materialien umfassende Informationen über die Forschungs- und Entwicklungsarbeit der DLR im gesamten Spektrum Luftfahrt - Raumfahrt - Energietechnik. Die angebotenen Medien waren bis zum Frühjahr 1991 nur durch unzulängliche konventionelle Erschließungsmittel zugänglich. Oft wurde gänzlich ohne Erschließung gearbeitet, also das 'gute Gedächtnis' der Mitarbeiter der Pressestelle benutzt. Da die Bestände weiterhin stark wuchsen, drohte der Überblick gänzlich verloren zugehen. Man entschloß sich, die Dokumentation völlig neu aufzubauen und eine Datenbank zu installieren, um die Informationsflut zu bewältigen
    Source
    Info 7. 9(1994) H.1, S.9-13
  2. Lehmann, F.: Semiosis complicates high-level ontology (2000) 0.00 
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    Abstract
    For automated question-answering, natural-language understanding, semantic integration of different databases/standards/thesauri/etc., you need a big complicated ontology of concepts and a logical language to combine them. Cyc (www.cyc.com) is such a system. It's good for your upper ontology to be systematic and clear, One way is to have a small number of well-defined distinctions at the top, by which all more specific concepts are partitioned. This is a system of "factors", or "facets" in Ranganathan's sense Iyer 1995) much like Aristotle's "differentia" in his "categories", as promoted in John Sowa's "ontological crystal". Practical considerations have driven Cyc's builders to mess up the neatness of such upper divisions. In particular, the simplicity of some very high "factors" is confounded, for practical use, by the occurrence in our world of semiosis and representation This talk will report on some of our experiences
    Pages
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