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  • × theme_ss:"Konzeption und Anwendung des Prinzips Thesaurus"
  1. Assem, M. van; Menken, M.R.; Schreiber, G.; Wielemaker, J.; Wielinga, B.: ¬A method for converting thesauri to RDF/OWL (2004) 0.06 
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    Abstract
    This paper describes a method for converting existing thesauri and related resources from their native format to RDF(S) and OWL. The method identifies four steps in the conversion process. In each step, decisions have to be taken with respect to the syntax or semantics of the resulting representation. Each step is supported through a number of guidelines. The method is illustrated through conversions of two large thesauri: MeSH and WordNet.
    Date
    29. 7.2011 14:44:56
    Series
    Lecture notes in computer science; no.3298
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  2. Pfeffer, M.; Eckert, K.; Stuckenschmidt, H.: Visual analysis of classification systems and library collections (2008) 0.06 
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    Abstract
    In this demonstration we present a visual analysis approach that addresses both developers and users of hierarchical classification systems. The approach supports an intuitive understanding of the structure and current use in relation to a specific collection. We will also demonstrate its application for the development and management of library collections.
    Series
    Lecture notes in computer science ; 5173
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  3. Burkart, M.: Thesaurus (1997) 0.03 
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    Series
    DGD-Schriftenreihe; Bd.9
    Source
    Grundlagen der praktischen Information und Dokumentation: ein Handbuch zur Einführung in die fachliche Informationsarbeit. 4. Aufl. Hrsg.: M. Buder u.a
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  4. Wersig, G.: Thesaurus Leitfaden : eine Einführung in das Thesaurus-Prinzip in Theorie und Praxis (1985) 0.02 
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    Abstract
    Umfassendste deutsche Darstellung zum Thema 'Thesaurus' mit detaillierten Ausführungen zu den Grundsätzen der Erstellung eines Thesaurus und seiner Anwendung für die gleichordnende Indexierung. Enthält viele Beispiele.
    Content
    Nicht in allen Passagen leicht verständlich; Aktualisierung zur ersten Auflage leider nur durch einen unverbundenen Anhang.
    Series
    DGD-Schriftenreihe; Bd.8
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  5. Brühl, B.: Thesauri und Klassifikationen : Naturwissenschaften - Technik - Wirtschaft (2005) 0.02 
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    Abstract
    Das Buch gibt einen umfassenden Überblick über vorhandene Thesauri und Klassifikationen. Es liefert detaillierte Beschreibungen zu mehr als 150 Klassifikationen und Thesauri aus Naturwissenschaften, Technik, Wirtschaft und Patentwesen. Da gegenwärtig eine aktuelle Zusammenstellung international verfügbarer Thesauri und Klassifikationen fehlt, schließt das vorliegende Buch diese Lücke und kann somit dazu beitragen, Doppelarbeit bei der Erstellung von Thesauri und Klassifikationen zu verhindern und den intellektuellen wie kostenintensiven Aufwand zu minimieren. Zusätzlich bietet dieses Nachschlagewerk mit einem umfangreichen Index den Informationsspezialisten Unterstützung bei der Formulierung präziser Rechercheanfragen, indem es Informationen über Vorhandensein, Aufbau und Verfügbarkeit der Thesauri und Klassifikationen bereitstellt, die für die Recherche genutzt werden können. Das Buch wendet sich an alle Information Professionals, die Dokumentationssprachen aufbauen und nutzen.
    Footnote
    Rez. in: Information: Wissenschaft & Praxis 56(2005) H.5/6, S.337 (W. Ratzek): "Bettina Brühl legt mit "Thesauri und Klassifikationen" ein Fleißarbeit vor. Das Buch mit seiner Auswahl von über 150 Klassifikationen und Thesauri aus Naturwissenschaft, Technik, Wirtschaft und Patenwesen macht es zu einem brauchbaren Nachschlagewerk, zumal auch ein umfassender Index nach Sachgebieten, nach Datenbanken und nach Klassifikationen und Thesauri angeboten wird. Nach einer 13-seitigen Einführung (Kapitel 1 und 2) folgt mit dem 3. Kapitel die "Darstellung von Klassifikationen und Thesauri", im wesentlichen aus den Beschreibungen der Hersteller zusammengestellt. Hier werden Dokumentationssprachen der Fachgebiete - Naturwissenschaften (3.1) und deren Spezialisierungen wie zum Beispiel "Biowissenschaften und Biotechnologie", "Chemie" oder "Umwelt und Ökonomie", aber auch "Mathematik und Informatik" (?) auf 189 Seiten vorgestellt, - Technik mit zum Beispiel "Fachordnung Technik", "Subject Categories (INIS/ ETDE) mit 17 Seiten verhältnismäßig knapp abgehandelt, - Wirtschaft mit "Branchen-Codes", "Product-Codes", "Länder-Codes"",Fachklas-sifikationen" und "Thesauri" ausführlich auf 57 Seiten präsentiert, - Patente und Normen mit zum Beispiel "Europäische Patentklassifikation" oder "International Patent Classification" auf 33 Seiten umrissen. Jedes Teilgebiet wird mit einer kurzen Beschreibung eingeleitet. Danach folgen die jeweiligen Beschreibungen mit den Merkmalen: "Anschrift des Erstellers", "Themen-gebiet(e)", "Sprache", "Verfügbarkeit", "An-wendung" und "Ouelle(n)". "Das Buch wendet sich an alle Information Professionals, die Dokumentationssprachen aufbauen und nutzen" heißt es in der Verlagsinformation. Zwar ist es nicht notwendig, die informationswissenschaftlichen Aspekte der Klassifikationen und Thesauri abzuhandeln, aber ein Hinweis auf die Bedeutung der Information und Dokumentation und/oder der Informationswissenschaft wäre schon angebracht, um in der Welt der Informations- und Wissenswirtschaft zu demonstrieren, welchen Beitrag unsere Profession leistet. Andernfalls bleibt das Blickfeld eingeschränkt und der Anschluss an neuere Entwicklungen ausgeblendet. Dieser Anknüpfungspunkt wäre beispielsweise durch einen Exkurs über Topic Map/Semantic Web gegeben. Der Verlag liefert mit der Herausgabe die ses Kompendiums einen nützlichen ersten Baustein zu einem umfassenden Verzeichnis von Thesauri und Klassifikationen."
    Series
    Materialien zur Information und Dokumentation; Bd.22
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  6. Schmitz-Esser, W.: EXPO-INFO 2000 : Visuelles Besucherinformationssystem für Weltausstellungen (2000) 0.02 
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    Abstract
    Das aktuelle Wissen der Welt im Spiegel einer Weltausstellung: Wie stellt man das dar und wie macht man es Interessierten zugänglich - in der Ausstellung, in Publikationen, im Funk und über das Internet? Was man alles auf einer Weltausstellung an der Schwelle zum dritten Jahrtausend sehen und erfahren kann, sprengt in Fülle und Vielfalt jeden individuell faßbaren Rahmen. Schmitz-Esser zeigt in seinem Buch, wie der Besucher wahlweise in vier Sprachen die Weltausstellung erleben und die Quintessenz davon mitnehmen kann. Ermöglicht wird dies durch das Konzept des virtuellen "Wissens in der Kapsel", das so aufbereitet ist, daß es in allen gängigen medialen Formen und für unterschiedlichste Wege der Aneignung eingesetzt werden kann. Die Lösung ist nicht nur eine Sache der Informatik und Informationstechnologie, sondern vielmehr auch eine Herausforderung an Informationswissenschaft und Computerlinguistik. Das Buch stellt Ziel, Ansatz, Komponenten und Voraussetzungen dafür dar.
    Content
    Willkommene Anregung schon am Eingang.- Vertiefung des Wissens während der Ausstellung.- Alles für das Wohlbefinden.- Die Systemstruktur und ihre einzelnen Elemente.- Wovon alles ausgeht.- Den Stoff als Topics und Subtopics strukturieren.- Die Nutshells.- Der Proxy-Text.Der Thesaurus.- Gedankenraumreisen.- Und zurück in die reale Welt.- Weitergehende Produkte.- Das EXPO-Infosystem auf einen Blick.- Register.- Literaturverzeichnis.
    Footnote
    Rez.in: KO 29(2002) no.2, S.103-104 (G.J.A. Riesthuis)
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
    Konzeption und Anwendung des Prinzips Thesaurus
  7. Wasen, S.: Entwicklung und Anwendung eines Telecom-Thesaurus (2001) 0.02 
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    Abstract
    Eutelis Consult ist eines der führenden Beratungsunternehmen auf dem Sektor der Telekommunikation und der Mehrwertdienste. Eutelis Consult erbringt national und international Beratungsdienstleistungen für Anbieter von Telekommunikations- und Mehrwertdiensten, für Netzbetreiber, Hersteller von Vermittlungssystemen und Endgeräten, Anwender und Nutzer von Telekommunikationsdiensten sowie öffentliche Auftraggeber. Weitere Beratungsschwerpunkte von Eutelis Consult konzentrieren sich auf die regulatorischen Rahmenbedingungen, Smartcardanwendungen, die Personalberatung sowie auf die Finanzierung junger Unternehmen in diesen Sektoren. Von der für das EUTELIS-interne Content Management verantwortlichen Abteilung wird aktuell ein Telecom Thesaurus erstellt, der der Indexierung aller internen Projektberichte und der dokumentierten externen Materialien dient. Grundlage ist ein Lotus Notes & Domino-basiertes internes Netz. Die Entstehungsgeschichte des Thesaurus, Experimente mit maschineller Generierung von Thesaurus-Relationen, maschineller Generierung von Thesaurus-Kandidaten und dem Einblick in den derzeitigen Stand mit dem Entwicklungstool IC INDEX 5.0 werden vermittelt
    Series
    Tagungen der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis; 4
    Source
    Information Research & Content Management: Orientierung, Ordnung und Organisation im Wissensmarkt; 23. DGI-Online-Tagung der DGI und 53. Jahrestagung der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis e.V. DGI, Frankfurt am Main, 8.-10.5.2001. Proceedings. Hrsg.: R. Schmidt
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  8. Sieber, W.: Thesaurus-Arbeit versus Informationsvisualisierung : Analyse und Evaluation am Maßstab der Usability (2007) 0.01 
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    Abstract
    Traditionell werden Thesauren in Listen dargestellt, doch die Existenz von Software legt nahe, die Möglichkeiten moderner Informationsvisualisierung auszuschöpfen.Wolfram Sieber evaluiert, ob und wie Software zur Thesaurus-Visualisierung über die reine Listendarstellung hinausgeht. Besonderes Augenmerk richtet er darauf, wie gut dabei die Chancen der Visualisierung - Stichworte prä-/attentive Wahrnehmung und Change Blindness - genutzt werden, bzw. wie gegen sie verstoßen und der Nutzer dadurch in seiner Arbeit behindert wird.Zugunsten einer soliden Entscheidungsgrundlage hat Sieber eine detaillierte Liste von Prüfkriterien zusammengestellt und sieben verschiedene Thesaurus-Visualisierer daran gemessen. Diese Liste kann als Grundlage für weitergehende Evaluierungen verwendet werden, bietet sich aber vor allem als Richtschnur bei der Entwicklung eigener Thesaurus- und Graph-Visualisierer an. Anwendern und interessierten Laien hilft sie, zur Auswahl stehende Graph-Visualisierer aus fachlicher Sicht, wissenschaftlich abgesichert zu beurteilen. Dieses Werk richtet sich an Entscheider, Entwickler und Anwender aus Informationswissenschaft und -praxis, Informatik, Dokumentation.
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  9. Boteram, F.: Semantische Relationen in Dokumentationssprachen : vom Thesaurus zum semantischen Netz (2010) 0.01 
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    Abstract
    Moderne Verfahren des Information Retrieval verlangen nach aussagekräftigen und detailliert relationierten Dokumentationssprachen. Der selektive Transfer einzelner Modellierungsstrategien aus dem Bereich semantischer Technologien für die Gestaltung und Relationierung bestehender Dokumentationssprachen wird diskutiert. In Form einer Taxonomie wird ein hierarchisch strukturiertes Relationeninventar definiert, welches sowohl hinreichend allgemeine als auch zahlreiche spezifische Relationstypen enthält, die eine detaillierte und damit aussagekräftige Relationierung des Vokabulars ermöglichen. Das bringt einen Zugewinn an Übersichtlichkeit und Funktionalität. Im Gegensatz zu anderen Ansätzen und Überlegungen zur Schaffung von Relationeninventaren entwickelt der vorgestellte Vorschlag das Relationeninventar aus der Begriffsmenge eines bestehenden Gegenstandsbereichs heraus.
    Date
    2. 3.2013 12:29:05
    Series
    Fortschritte in der Wissensorganisation; Bd.11
    Source
    Wissensspeicher in digitalen Räumen: Nachhaltigkeit - Verfügbarkeit - semantische Interoperabilität. Proceedings der 11. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation, Konstanz, 20. bis 22. Februar 2008. Hrsg.: J. Sieglerschmidt u. H.P.Ohly
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  10. Berti, Jr., D.W.; Lima, G.; Maculan, B.; Soergel, D.: Computer-assisted checking of conceptual relationships in a large thesaurus (2018) 0.01 
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    Date
    17. 1.2019 19:04:22
    Series
    Advances in knowledge organization; vol.16
    Source
    Challenges and opportunities for knowledge organization in the digital age: proceedings of the Fifteenth International ISKO Conference, 9-11 July 2018, Porto, Portugal / organized by: International Society for Knowledge Organization (ISKO), ISKO Spain and Portugal Chapter, University of Porto - Faculty of Arts and Humanities, Research Centre in Communication, Information and Digital Culture (CIC.digital) - Porto. Eds.: F. Ribeiro u. M.E. Cerveira
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  11. Aitchison, J.: Subject control : Thesaurus construction standards (1991) 0.01 
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    Abstract
    Gives an overview of recommendations given in the International and British Standards for construction of thesauri. Details: vocabulary control of monolingual thesauri, form and chooice of terms, homographs and polysemes, scope notes and definitions, compound terms, displaying and distinguishing basic relationships linking terms, multilingual aspects, thesaurus displays, and construction techniques. Outlines the future of the thesaurus and thesaurus standards
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  12. Shiri, A.A.; Revie, C.; Chowdhury, G.: Thesaurus-enhanced search interfaces (2002) 0.01 
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    Date
    18. 5.2002 17:29:00
    Source
    Journal of information science. 28(2002) no.2, S.111-122
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
    Semantisches Umfeld in Indexierung u. Retrieval
  13. Scheven, E.: ¬Die neue Thesaurusnorm ISO 25964 und die GND (2017) 0.01 
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    Series
    Fortschritte in der Wissensorganisation; Bd.13
    Source
    Theorie, Semantik und Organisation von Wissen: Proceedings der 13. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) und dem 13. Internationalen Symposium der Informationswissenschaft der Higher Education Association for Information Science (HI) Potsdam (19.-20.03.2013): 'Theory, Information and Organization of Knowledge' / Proceedings der 14. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) und Natural Language & Information Systems (NLDB) Passau (16.06.2015): 'Lexical Resources for Knowledge Organization' / Proceedings des Workshops der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) auf der SEMANTICS Leipzig (1.09.2014): 'Knowledge Organization and Semantic Web' / Proceedings des Workshops der Polnischen und Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) Cottbus (29.-30.09.2011): 'Economics of Knowledge Production and Organization'. Hrsg. von W. Babik, H.P. Ohly u. K. Weber
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  14. ISO 25964 Thesauri and interoperability with other vocabularies (2008) 0.01 
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    Abstract
    T.1: Today's thesauri are mostly electronic tools, having moved on from the paper-based era when thesaurus standards were first developed. They are built and maintained with the support of software and need to integrate with other software, such as search engines and content management systems. Whereas in the past thesauri were designed for information professionals trained in indexing and searching, today there is a demand for vocabularies that untrained users will find to be intuitive. ISO 25964 makes the transition needed for the world of electronic information management. However, part 1 retains the assumption that human intellect is usually involved in the selection of indexing terms and in the selection of search terms. If both the indexer and the searcher are guided to choose the same term for the same concept, then relevant documents will be retrieved. This is the main principle underlying thesaurus design, even though a thesaurus built for human users may also be applied in situations where computers make the choices. Efficient exchange of data is a vital component of thesaurus management and exploitation. Hence the inclusion in this standard of recommendations for exchange formats and protocols. Adoption of these will facilitate interoperability between thesaurus management systems and the other computer applications, such as indexing and retrieval systems, that will utilize the data. Thesauri are typically used in post-coordinate retrieval systems, but may also be applied to hierarchical directories, pre-coordinate indexes and classification systems. Increasingly, thesaurus applications need to mesh with others, such as automatic categorization schemes, free-text search systems, etc. Part 2 of ISO 25964 describes additional types of structured vocabulary and gives recommendations to enable interoperation of the vocabularies at all stages of the information storage and retrieval process.
    T.2: The ability to identify and locate relevant information among vast collections and other resources is a major and pressing challenge today. Several different types of vocabulary are in use for this purpose. Some of the most widely used vocabularies were designed a hundred years ago and have been evolving steadily. A different generation of vocabularies is now emerging, designed to exploit the electronic media more effectively. A good understanding of the previous generation is still essential for effective access to collections indexed with them. An important object of ISO 25964 as a whole is to support data exchange and other forms of interoperability in circumstances in which more than one structured vocabulary is applied within one retrieval system or network. Sometimes one vocabulary has to be mapped to another, and it is important to understand both the potential and the limitations of such mappings. In other systems, a thesaurus is mapped to a classification scheme, or an ontology to a thesaurus. Comprehensive interoperability needs to cover the whole range of vocabulary types, whether young or old. Concepts in different vocabularies are related only in that they have the same or similar meaning. However, the meaning can be found in a number of different aspects within each particular type of structured vocabulary: - within terms or captions selected in different languages; - in the notation assigned indicating a place within a larger hierarchy; - in the definition, scope notes, history notes and other notes that explain the significance of that concept; and - in explicit relationships to other concepts or entities within the same vocabulary. In order to create mappings from one structured vocabulary to another it is first necessary to understand, within the context of each different type of structured vocabulary, the significance and relative importance of each of the different elements in defining the meaning of that particular concept. ISO 25964-1 describes the key characteristics of thesauri along with additional advice on best practice. ISO 25964-2 focuses on other types of vocabulary and does not attempt to cover all aspects of good practice. It concentrates on those aspects which need to be understood if one of the vocabularies is to work effectively alongside one or more of the others. Recognizing that a new standard cannot be applied to some existing vocabularies, this part of ISO 25964 provides informative description alongside the recommendations, the aim of which is to enable users and system developers to interpret and implement the existing vocabularies effectively. The remainder of ISO 25964-2 deals with the principles and practicalities of establishing mappings between vocabularies.
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  15. Chmielewska-Gorczycy, E.: Funkcje tezaurusa w systemie informacy jno-wyszzukiwawczm (1995) 0.01 
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    Abstract
    Discusses the various functions which a thesaurus can have. Highlights the main function of a thesaurus in vocabulary control, eliminating natural language ambiguity and providing consistency of indexing, and serving as an aid in the searching process. Further discusses the function of a search thesaurus in serving as a user's aid in full text systems and in free indexing systems, and the additional function of an online thesaurus integrated with an online database, that of a vocabulary master file. Notes also how a thesaurus can function as a switching language or intermediary lexicon in multidatabase systems
    Footnote
    Übers. d. Titels: Functions of thesaurus in information retrievals systems
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  16. Cazan, C.: Medizinische Ontologien : das Ende des MeSH (2006) 0.01 
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    Abstract
    Die Komplexizität medizinischer Fragestellungen und des medizinischen Informationsmanagements war seit den Anfängen der Informatik immer ein besonders wichtiges Thema. Trotz des Scheiterns der Künstlichen Intelligenz in den 80er Jahren des vorigen Jahrhunderts haben deren Kernideen Früchte getragen. Durch kongruente Entwicklung einer Reihe anderer Wissenschaftsdisziplinen und der exponentiellen Entwicklung im Bereich Computerhardware konnten die gestellten, hohen Anforderungen bei der medizinischen Informationssuche doch noch erfüllt werden. Die programmatische Forderung von Tim Berners-Lee betreffend "Semantic Web" im Jahr 2000 hat dem Thema Ontologien für maschinenlesbare Repositorien in Allgemein- und Fachsprache breitere Aufmerksamkeit gewonnen. Da in der Medizin (PubMed) mit dem von NLM schon vor 20 Jahren entwickelten Unified Medical Language System (UMLS) eine funktionierende Ontologie in Form eines semantischen Netzes in Betrieb ist, ist es auch für Medizinbibliothekare und Medizindokumentare hoch an der Zeit, sich damit zu beschäftigen. Ontologien können im Wesen, trotz der informatisch vernebelnden Terminologie, als Werkzeuge der Klassifikation verstanden werden. Hier sind von seiten der Bibliotheks- und Dokumentationswissenschaft wesentliche Beiträge möglich. Der vorliegende Bericht bietet einen Einstieg in das Thema, erklärt wesentliche Elemente des UMLS und schließt mit einer kommentierten Anmerkungs- und Literaturliste für die weitere Beschäftigung mit Ontologien.
    Content
    Dieser Aufsatz ist kein Abgesang auf MeSH (= Medical Subject Headings in Medline/PubMed), wie man/frau vielleicht vermuten könnte. Vielmehr wird - ohne informatiklastiges Fachchinesisch - an Hand des von der National Library of Medicine entwickelten Unified Medical Language System erklärt, worin die Anforderungen an Ontologien bestehen, die im Zusammenhang mit dem Semantic Web allerorten eingefordert und herbeigewünscht werden. Eine Lektüre für Einsteigerinnen, die zum Vertiefen der gewonnenen Begriffssicherheit an Hand der weiterführenden Literaturhinweise anregt. Da das UMLS hier vor allem als Beispiel verwendet wird, werden auch Bibliothekarlnnen, Dokumentarlnnen und Informationsspezialistinnen anderer Fachbereiche den Aufsatz mit Gewinn lesen - und erfahren, dass unser Fachwissen aus der Sacherschließung und der Verwendung und Mitgestaltung von Normdateien und Thesauri bei der Entwicklung von Ontologien gefragt ist! (Eveline Pipp, Universitätsbibliothek Innsbruck). - Die elektronische Version dieses Artikels ist verfügbar unter: http://www.egms.de/en/journals/mbi/2006-6/mbi000049.shtml.
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  17. Byrne, C.C.; McCracken, S.A.: ¬An adaptive thesaurus employing semantic distance, relational inheritance and nominal compound interpretation for linguistic support of information retrieval (1999) 0.01 
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    Date
    15. 3.2000 10:22:37
    Source
    Journal of information science. 25(1999) no.2, S.113-131
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  18. Nikolai, R.: Thesaurusföderationen : Ein Rahmenwerk für die flexible Integration von heterogenen, autonomen Thesauri (2002) 0.01 
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    Abstract
    Dem wachsenden Bedarf der "Informationsgesellschaft" nach Informationen folgten in den letzten Jahren rasch wachsende Informationssysteme, die heterogene Informationen global verteilt und einfach zugreifbar vorhalten. Solche modernen Informationssysteme und datenintensiven Anwendungen können als eine wesentliche Komponente "verteilter Informationsumgebungen" angesehen werden, die universellen Zugriff auf Informationen aus einer Vielzahl menschlicher Wissensgebiete ermöglichen. Charakteristische Eigenschaften derartiger großer Informationssysteme sind, dass sie auf großen, zum Teil autonomen Informationsquellen basieren, die häufig über offene Computernetze (lose) verbunden sind, eine große Anzahl von Benutzern unterstützen, eine Infrastruktur anbieten, die den einfachen Zugriff auf verschiedenen Dienste ermöglicht, und dass die Qualität dieser Dienste entscheidend für deren Erfolg ist. Von besonderer Bedeutung sind bei derartig großen zur Verfügung stehenden Datenmengen Dienste, die das gezielte Wiederauffinden von Informationen (Information Retrieval) ermöglichen. Thesauri sind ein bewährtes Werkzeug, um diesen Prozess zu unterstützen. Sie bieten ein einheitliches und konsistentes Vokabular, das als Grundlage für semantisches Information Retrieval verwendet werden kann. Bei einem häufig fachübergreifenden Datenbestand, der auch mehrsprachig sein kann, sind traditionelle Fachthesauri, die in der Regel nur einsprachig vorliegen, aber nicht mehr ausreichend. Selbst in Dokumentenbeständen eines Fachinformationssystems finden sich oft Ausweitungen auf Begriffe angrenzender Fachgebiete. Es wird ein umfangreicheres und zugleich spezialisierteres Vokabular gefordert.
    In Informationssystemen werden häufig jeweils an die besonderen Bedürfnisse der Benutzer angepasste Thesauri verwendet. Bei einer Integration der Informationssysteme wird auch eine Integration der Thesauri erforderlich, um den Benutzer beispielsweise dabei zu unterstützen, Informationen aus verschiedenen Informationsquellen zu erhalten. Die DG XIII der Europäischen Union hat bereits 1990 eine Liste von 1.000 häufig verwendeten Thesauri weltweit erstellt. Eine Verbindung dieser Thesauri wäre ein wichtiger Fortschritt bei der gemeinsamen Benutzung der Terminologie. Da das Aufbauen eines neuen Thesaurus, aber auch die manuelle Integration existierender Thesauri immense Kosten verursacht (als Beispiel sei genannt, dass zur Erstellung einer initialen Version des Allgemeinen Umweltthesaurus GEMET mehrere Mannjahre benötigt wurden), sind neue Lösungen, die eine integrierte Sicht auf die Vokabulare mehrerer Thesauri unter Aufwendung finanziell vertretbarer Mittel ermöglichen, erforderlich. Zudem wird die klassische Form der Integration von Thesauri der losen Kopplung von Informationssystemen nicht gerecht. Die erforderlichen technischen Voraussetzungen für das logische Zusammenbringen verteilter, heterogener Thesauri sind durch lokale und globale Vernetzung weitestgehend gegeben.
    Zielbeschreibung: In dieser Arbeit soll ein Rahmenwerk für die lose Integration von heterogenen und autonomen Thesauri, Thesaurusföderationen genannt, erarbeitet werden. Das Konzept der Thesaurusföderationen soll den Anforderungen moderner Informationssysteme nach zugleich umfangreicheren und spezialisierteren Vokabularen unter Ausnutzung neuer technologischer Möglichkeiten gerecht werden. Der zu entwickelnde Integrations-Ansatz soll als Basis die mit großem Aufwand erstellten, bereits vorhandenen Thesauri (Komponententhesauri) verwenden und deren Vokabulare verknüpfen, so dass sie als ein Gesamtvokabular erscheinen. Existierende Ansätze für einen integrierten Zugriff auf verschiedene Informationssysteme sowie der gleichzeitigen Verwendung verschiedener Terminologien basieren auf so genannten MultiThesaurus-Systemen. Ein wesentlicher Kritikpunkt an diesen Ansätzen ist der, dass jeweils nur Teilaspekte behandelt werden. Was fehlt, ist ein in ganzheitliches Rahmenwerk, das die Aspekte der Integration, der Behandlung von Konflikten und Unvollständigkeiten, der Verwendung im Information Retrieval und schließlich die Bewertung der Güte des integrierten Vokabulars betrachtet. Ein solches Rahmenwerk soll in dieser Arbeit erstmals erarbeitet werden. Dabei gilt es zu berücksichtigen, dass eine Überforderung des Benutzers durch die Komplexität des Gesamtvokabulars vermieden wird. U.a. soll das dynamische Ein-/Ausblenden von teilhabenden Thesauri unterstützt werden. Die existierenden Ansätze der Multi-Thesaurus-Systeme berücksichtigen zudem nicht eine in verteilten Informationssystemen erstrebenswerte Autonomie der Thesauri und ihre häufig gegebene Heterogenität. Um diesen Anforderungen gerecht zu werden, soll sich unser Ansatz an den Konzepten föderierter Datenbanksysteme orientieren, allerdings ohne die Einschränkung, ausschließlich von Datenbankverwaltungsystemen verwaltete Thesauri zu integrieren. Der Schwerpunkt soll hier auf der semantischen Integration liegen, die in föderierten Datenbanksystemen häufig nur ein Randthema ist. Neue Integrationsverfahren auf semantischer Ebene (Begriffsintegration), die im Gegensatz zu bekannten Ansätzen die Ergebnisse einer rechner-unterstützten Analyse der Inhalte und Güte der Thesauri berücksichtigen und entsprechend konfiguriert werden, sollen eine verbesserte semi-automatische Integration ermöglichen, ebenso erstmals eine Bewertung der Integrationsergebnisse. Diese Verfahren sollen die Reichhaltigkeit der Informationen in den Thesauri selbst ausnutzen sowie auf weitere Wissensquellen zugreifen können, um den notwendigen menschlichen Einsatz zu minimieren. Die Thesaurusföderation soll ihre Dienste als Mehrwertdienste anbieten und dazu auf die an der Föderation beteiligten heterogenen Komponententhesauri zugreifen, deren Autonomie erhalten bleibt. Um den breiten Einsatz des entwickelten Ansatzes zu ermöglichen, soll das Konzept grundsätzlich fachgebietsunabhängig sein. Auch wenn eine (semi-)automatische Integration unter Berücksichtigung der Autonomie einem durch manuelle Verfahren und Anpassung der beteiligten Thesauri entstandenem SuperThesaurus unterlegen ist, ist dies möglicherweise die einzig praktikable Art und Weise, um ein flexibel skalierbares Multi-Thesaurus-System zu erstellen und zu pflegen.
    Content
    Universität Karlsruhe, Fak. f. Informatik. Diss. v. 19.12.2002.
    Imprint
    Karlsruhe : Fakultät für Informatik
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  19. McCulloch, E.: Thesauri: practical guidance for construction (2005) 0.01 
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    Abstract
    Purpose - With the growing recognition that thesauri aid information retrieval, organisations are beginning to adopt, and in many cases, create thesauri. This paper offers some guidance on the construction process. Design/methodology/approach - An opinion piece with a practical focus, based on recent experiences gleaned from consultancy work. Findings - A number of steps can be taken to ensure any thesaurus under construction is fit for purpose. Due consideration is therefore given to aspects such as term selection, structure and notation, thesauri standards, software and Web display issues, thesauri evaluation and maintenance. This paper also notes that creating new subject schemes from scratch, however attractive, contributes to the plethora of terminologies currently in existence and can limit user searching within particular contexts. The decision to create a "new" thesaurus should therefore be taken carefully and observance of standards is paramount. Practical implications - This paper offers advice to assist practitioners in the development of thesauri. Originality/value - Useful guidance for those practitioners new to the area of thesaurus construction is provided, together with an overview of selected key processes involved in the construction of a thesaurus.
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  20. Will, L.: ¬The ISO 25964 data model for the structure of an information retrieval thesaurus (2012) 0.01 
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    Abstract
    International standard ISO 25964-1:2011 - Thesauri for information retrieval, includes a detailed data model for thesaurus structure. It is intended to provide a rigorous presentation of the elements and relationships which will not only clarify and standardise the varying and conflicting interpretations which exist but which can also be implemented consistently in automated systems. It makes a clear distinction between concepts and the terms which are used to label them, and includes other features that may be present in a thesaurus, such as compound equivalence, arrays and node labels, concept groups, notes and version history.
    Series
    Advances in knowledge organization; vol.13
    Source
    Categories, contexts and relations in knowledge organization: Proceedings of the Twelfth International ISKO Conference 6-9 August 2012, Mysore, India. Eds.: Neelameghan, A. u. K.S. Raghavan
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus

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