Search (1980 results, page 1 of 99)

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  1. Dailey, J.E.: Subject headings (1980) 0.23 
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    Abstract
    Enthält Geschichte der Library of Congress Subject Headings und Sears' list
    Object
    Sears List of Subject Headings
  2. Julien, C.-A.; Tirilly, P.; Leide, J.E.; Guastavino, C.: Constructing a true LCSH tree of a science and engineering collection (2012) 0.20 
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    Abstract
    The Library of Congress Subject Headings (LCSH) is a subject structure used to index large library collections throughout the world. Browsing a collection through LCSH is difficult using current online tools in part because users cannot explore the structure using their existing experience navigating file hierarchies on their hard drives. This is due to inconsistencies in the LCSH structure, which does not adhere to the specific rules defining tree structures. This article proposes a method to adapt the LCSH structure to reflect a real-world collection from the domain of science and engineering. This structure is transformed into a valid tree structure using an automatic process. The analysis of the resulting LCSH tree shows a large and complex structure. The analysis of the distribution of information within the LCSH tree reveals a power law distribution where the vast majority of subjects contain few information items and a few subjects contain the vast majority of the collection.
  3. Tirilly, P.; Julien, C.-A.: Random walks for subject hierarchy simplification (2012) 0.20 
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    Abstract
    Although subject hierarchies are widely used to index document collections, few tools leverage their structure to facilitate collection browsing. This is mostly due to the complexity of such structures that include thousands of nodes. This paper proposes a new approach to simplify subject hierarchies based on the distribution of documents among the nodes. A random walk algorithm simulates the route of a user within the hierarchy, under the assumption that the user is attracted by the most populated nodes. Poorly visited nodes can be identified and eliminated, leaving a structure containing only the nodes that best represent the content of the collection. Experiments on a collection indexed using the Library of Congress Subject Headings (LCSH) show that, as compared to the state-of-the-art simplification method, the random walk-based approach gives access to a larger part of the collection for the same structure size, and offers more flexibility to customize the complexity of thestructure.
  4. Julien, S.: ¬The future of GUI development tools (1992) 0.20 
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  5. Fisher, K.; Julien, H.: Information behavior (2009) 0.20 
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  6. Julien, C.-A.; Tirilly, P.; Dinneen, J.D.; Guastavino, C.: Reducing subject tree browsing complexity (2013) 0.18 
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    Abstract
    Many large digital collections are currently organized by subject; although useful, these information organization structures are large and complex and thus difficult to browse. Current online tools and visualization prototypes show small, localized subsets and do not provide the ability to explore the predominant patterns of the overall subject structure. This study describes subject tree modifications that facilitate browsing for documents by capitalizing on the highly uneven distribution of real-world collections. The approach is demonstrated on two large collections organized by the Library of Congress Subject Headings (LCSH) and Medical Subject Headings (MeSH). Results show that the LCSH subject tree can be reduced to 49% of its initial complexity while maintaining access to 83% of the collection, and the MeSH tree can be reduced to 45% of its initial complexity while maintaining access to 97% of the collection. A simple solution to negate the loss of access is discussed. The visual impact is demonstrated by using traditional outline views and a slider control allowing searchers to change the subject structure dynamically according to their needs. This study has implications for the development of information organization theory and human-information interaction techniques for subject trees.
  7. Library of Congress Subject Headings (1994) 0.17 
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    Content
    Enthält 206.300 subject headings; Zuwachs des letzten Jahres: 8.000; alphabetische Liste aller früheren, nun nicht mehr gültigen headings (Earlier forms); umfangreiche Einleitung
    Footnote
    Vgl. auch Cataloging service bulletin. No.46(1989) S.65-66; ab 12th ed. 1989 jährliche Erscheinungsweise. - Neben Papierausgabe Mikrofiche und CD-ROM Ausgabe (CDMARC Subjects, $475,-; vgl. Demo-Diskette) mit jeweils vierteljährlicher Ergänzung. - Erste Ausgabe: 1911 'List of Subject Headings for use in dictionary catalogs'. Chicago: ALA 1911. - Vgl. zur Geschichte: Dailey, J.E. Subject headings in ELIS
  8. Townley, H.M.; Gee, R.G.: Thesaurus-making : grow your own wordstock (1980) 0.17 
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    LCSH
    Subject headings
    Subject
    Subject headings
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  9. Julien, C.-A.; Tirilly, P.; Leide, J.E.; Guastavino, C.: Using the LCSH hierarchy to browse a collection (2012) 0.17 
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    Abstract
    The Library of Congress Subject Headings (LCSH) is a subject structure used to index large collections throughout the world. Browsing a collection through LCSH is difficult using current on-line tools in part because they are inadequately integrated with information collections. Users of these LCSH browsing tools are expected to find a promising LCSH string before using it to search for the information itself; many users do not have the patience for such a two-step process. This article proposes a method to fully integrate a specific collection in its subset of the LCSH hierarchy in order to facilitate LCSH browsing as well as information retrieval. Techniques are described to match LCSH strings assigned to the collection with an established string from the authority records, and build their specific LCSH hierarchy. The resulting subset of LCSH structure is described in terms of its size and broader/narrower term statistics, and implications for browsing and information retrieval are discussed. The results of this research have implications for institutions wishing to further capitalize on existing LCSH organization investments for the purpose of subject browsing and information retrieval.
  10. Julien, C.-A.; Guastavino, C.; Bouthillier, F.: Capitalizing on information organization and information visualization for a new-generation catalogue (2012) 0.17 
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    Abstract
    Subject searching is difficult with traditional text-based online public access library catalogues (OPACs), and the next-generation discovery layers are keyword searching and result filtering tools that offer little support for subject browsing. Next-generation OPACs ignore the rich network of relations offered by controlled subject vocabulary, which can facilitate subject browsing. A new generation of OPACs could leverage existing information-organization investments and offer online searchers a novel browsing and searching environment. This is a case study of the design and development of a virtual reality subject browsing and information retrieval tool. The functional prototype shows that the Library of Congress subject headings (LCSH) can be shaped into a useful and usable tree structure serving as a visual metaphor that contains a real world collection from the domain of science and engineering. Formative tests show that users can effectively browse the LCSH tree and carve it up based on their keyword search queries. This study uses a complex information-organization structure as a defining characteristic of an OPAC that goes beyond the standard keyword search model, toward the cutting edge of online search tools.
  11. Sears' list of subject headings (2018) 0.16 
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    Abstract
    The system is available both in print and online versions. Names a few new subject headings in areas like science, technology, engineering and medicine (STEM). In this edition, there are a total of 1,600 new headings making it a total of 12,000+ preferred headings meant for subject access in small and medium sized libraries. This unprecedented increase of about 1,600 headings is mostly due the complete incorporation of the Canadian Sears last published independently in 2006. Also critically examines inconsistencies in a few headings. Concludes to say the new edition in resplendent, hard binding maintains its stellar reputation of a handy list of general subject headings both for applications and a teaching resource.
    Footnote
    Introduction und Rez. in: Knowledge Organization 45(2018) no.8, S.712-714. u.d.T. "Satija, M. P. 2018: "The 22nd edition (2018) of the Sears List of Subject Headings: A brief introduction." (DOI:10.5771/0943-7444-2018-8-712).
    Object
    Sears List of Subject Headings
  12. Gilchrist, A.: ¬The thesaurus in retrieval (1971) 0.15 
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    Classification
    AN 94200 Allgemeines / Buch- und Bibliothekswesen, Informationswissenschaft / Informationswissenschaft / Grundlagen, Theorie / Thesauruskunde
    LCSH
    Subject headings
    RVK
    AN 94200 Allgemeines / Buch- und Bibliothekswesen, Informationswissenschaft / Informationswissenschaft / Grundlagen, Theorie / Thesauruskunde
    Subject
    Subject headings
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  13. Julien, H.E.: How career information helps adolescents' decision-making (1997) 0.15 
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  14. New directions in information behaviour (2011) 0.15 
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    Footnote
    Rez. in: JASIST 63(2012) no.12, S.2557-2558 (Heidi Julien)
  15. Aitchison, J.; Gilchrist, A.: Thesaurus construction : a practical manual (1987) 0.14 
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    LCSH
    Subject headings
    Subject
    Subject headings
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  16. Satija, M.P.: ¬The sixteenth edition (1987) of the Sears' List of Subject Headings : some salient features in historical perspective of its Platinum Jubilee Year (1998) (1998) 0.14 
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    Footnote
    Enthält eine Liste der 16 Auflagen der Sears' List mit den jeweiligen Herausgeberinnen / Herausgebern und Neuerungen
    Object
    Sears List of Subject Headings
  17. Lancaster, F.W.: Vocabulary control for information retrieval (1986) 0.12 
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    Classification
    ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
    LCSH
    Subject headings
    RVK
    ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
    Subject
    Subject headings
  18. Looking for information : a survey on research on information seeking, needs, and behavior (2012) 0.12 
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    Footnote
    Rez. in: JASIST 63(2012) no.12, S.2557-2558 (Heidi Julien)
  19. Cole, C.: ¬A rebuttal of the book review of the book titled "The Consciousness' Drive: Information Need and the Search for Meaning" : mapping cognitive and document spaces (2020) 0.12 
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    Content
    Vgl. die Rezension in: JASIST 71(2020) no.1, S.118-120 (Heidi Julien).
  20. Vasiljev, A.: Thesaurus project of the Delft University of Technology Library : Allgemeiner Thesaurus für Bibliotheken (1982) 0.12 
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    Abstract
    Discussion of the results and consequences of the automation project named thesaurus/concordance project, carried out at the DUT Library. The aim of the project was, by making the subject headings and their corresponding classification codes machine readable, to produce periodically cumulative lists, classifies lists, lists per subject fields, alphabetical lists of inverted subheadings and geographical names with their corresponding main headings and notations
    Source
    Numerische und nicht-numerische Klassifikation zwischen Theorie und Praxis. Proc. der 5. Fachtagung der Gesellschaft für Klassifikation, Hofgeismar, 7.-10.4.1981. Hrsg.: Peter Ihm u.a

Authors

Years

Languages

  • d 32
  • m 4
  • es 1
  • nl 1
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Types

  • a 1419
  • m 383
  • el 127
  • s 117
  • i 25
  • n 19
  • b 17
  • r 14
  • x 12
  • p 4
  • ? 3
  • d 3
  • h 3
  • l 2
  • v 1
  • More… Less…

Themes

Subjects

Classifications