Search (47 results, page 1 of 3)

  • × theme_ss:"Beziehungen verbale / systematische Erschließung"
  1. Gabler, S.: Vergabe von DDC-Sachgruppen mittels eines Schlagwort-Thesaurus (2021) 0.15 
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    Content
    Master thesis Master of Science (Library and Information Studies) (MSc), Universität Wien. Advisor: Christoph Steiner. Vgl.: https://www.researchgate.net/publication/371680244_Vergabe_von_DDC-Sachgruppen_mittels_eines_Schlagwort-Thesaurus. DOI: 10.25365/thesis.70030. Vgl. dazu die Präsentation unter: https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=web&cd=&ved=0CAIQw7AJahcKEwjwoZzzytz_AhUAAAAAHQAAAAAQAg&url=https%3A%2F%2Fwiki.dnb.de%2Fdownload%2Fattachments%2F252121510%2FDA3%2520Workshop-Gabler.pdf%3Fversion%3D1%26modificationDate%3D1671093170000%26api%3Dv2&psig=AOvVaw0szwENK1or3HevgvIDOfjx&ust=1687719410889597&opi=89978449.
    Imprint
    Wien / Library and Information Studies : Universität
  2. Unesco thesaurus : a structured list of descriptors for indexing and retrieving literature in the fields of education, science, social and human science, culture and communication and information (1995) 0.01 
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    Footnote
    Rez. in: Indexer 20(1996) no.2, S.108 (A. McCarthy); Journal of librarianship and information science 29(1997) no.3, S.165-166 (A. Gilchrist)
  3. Francu, V.: ¬The impact of specificity on the retrieval power of a UDC-based multilingual thesaurus (2003) 0.01 
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    Abstract
    The article describes the research done over a bibliographic database in order to show the impact the specificity of the knowledge organising tools may have on information retrieval (IR). For this purpose two multilingual Universal Decimal Classification (UDC) based thesauri having different degrees of specificity are considered. Issues of harmonising a classificatory structure with a thesaurus structure are introduced, and significant aspects of information retrieval in a multilingual environment are examined in an extensive manner. Aspects of complementarity are discussed with particular emphasis on the real impact produced on IR by alternative search facilities. Finally, a number of conclusions are formulated as they arise from the study.
    Content
    Beitrag eines Themenheftes "Knowledge organization and classification in international information retrieval"
    Type
    a
  4. Root thesaurus. Pt.1.2 (1985) 0.01 
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    Date
    18. 5.2007 14:22:43
  5. Karg, H.: Mapping Dewey and subject authorities : CrissCross (2007) 0.01 
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    Content
    Vortrag anläasslich des Workshops: "Extending the multilingual capacity of The European Library in the EDL project Stockholm, Swedish National Library, 22-23 November 2007".
  6. Wilson, T.D.: ¬The work of the British Classification Research Group (1972) 0.01 
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    Series
    Contributions in librarianship and information science; 3
    Type
    a
  7. Gödert, W.: ¬Die Dezimalklassifikation im Online-Retrieval (1990) 0.01 
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    Abstract
    Considers some structural features of UDC which may be of some importance to on-line information retrieval with synthesised UDC notations
    Type
    a
  8. Scott, D.S.: Subject classification and natural-language processing for retrieval in large databases (1989) 0.01 
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    Abstract
    New forms of man-machine interaction are becoming available that have great power for the delivery of information. But the scales of speed and capacity on which the computing machines operate demand new thoughts as to how information can be stored and retrieved. The objective of the discussion in this paper is to argue for a combination of natural-language processing and subject classification to be able to meet the demands
    Type
    a
  9. Frâncu, V.: ¬A universal classification system going through changes (2001) 0.01 
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    Abstract
    In the early 1990s, indexing with classification codes from the Universal Decimal Classification (UDC) in an academic library, going from traditional to automated routines in any and all its activities, suddenly proved insufficient. Under the circumstances of online searching, the possibilities offered by the new OPAC looked much more attractive to indexers and searchers alike. Therefore, a quick shift to indexing with UDC and keywords instead of UDC numbers alone was made. Currency, precision and, more importantly, user-friendliness were strong advantages offered by keyword indexing and searching. But the larger the dictionary of keywords, the more problematic the consequences an information scattering, given the lack of control an terms. The present paper describes the advantages of the UDC in indexing by presenting some of the devices it is provided with: subdivision by analogy, common and special auxiliaries, use of synthesis, and use of connecting symbols. The solution of indexing with both UDC notation and words from a thesaurus based an UDC was prompted by some other characteristics of the schedules: a semi-faceted classification system, hierarchical organisation, richness in terminology and consistency and control of notation. The methodology used in building the thesaurus is conceived according to the international standards (ISO 2788 and 5964) to which some principles have been added, giving the specific approach of harmonising a classification structure with that of a thesaurus. Compatibility and translatability issues are also considered and some problems arising from them are treated in detail. Most of the problems discussed are illustrated with examples.
    Imprint
    Medford, NJ : Information Today
    Type
    a
  10. Raghavan, K.S.: ¬The general theory of classification as the basis for structuring of subject headings (1985(?)) 0.01 
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    Abstract
    Defines the basic functions of surrogate files in information retrieval. Exemplifies the categories enunciated in the general theory of classification developed in India. Defines the principles for structuring the concepts. Formulates set of general postulates pertaining to the structure of compound subjects. On the basis of these, outlines a procedure for structuring of subject headings. Demonstrates the application of procedure through examples
    Type
    a
  11. Tudhope, D.; Binding, C.; Blocks, D.; Cunliffe, D.: FACET: thesaurus retrieval with semantic term expansion (2002) 0.01 
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    Abstract
    There are many advantages for Digital Libraries in indexing with classifications or thesauri, but some current disincentive in the lack of flexible retrieval tools that deal with compound descriptors. This demonstration of a research prototype illustrates a matching function for compound descriptors, or multi-concept subject headings, that does not rely on exact matching but incorporates term expansion via thesaurus semantic relationships to produce ranked results that take account of missing and partially matching terms. The matching function is based on a measure of semantic closeness between terms.The work is part of the EPSRC funded FACET project in collaboration with the UK National Museum of Science and Industry (NMSI) which includes the National Railway Museum. An export of NMSI's Collections Database is used as the dataset for the research. The J. Paul Getty Trust's Art and Architecture Thesaurus (AAT) is the main thesaurus in the project. The AAT is a widely used thesaurus (over 120,000 terms). Descriptors are organised in 7 facets representing separate conceptual classes of terms.The FACET application is a multi tiered architecture accessing a SQL Server database, with an OLE DB connection. The thesauri are stored as relational tables in the Server's database. However, a key component of the system is a parallel representation of the underlying semantic network as an in-memory structure of thesaurus concepts (corresponding to preferred terms). The structure models the hierarchical and associative interrelationships of thesaurus concepts via weighted poly-hierarchical links. Its primary purpose is real-time semantic expansion of query terms, achieved by a spreading activation semantic closeness algorithm. Queries with associated results are stored persistently using XML format data. A Visual Basic interface combines a thesaurus browser and an initial term search facility that takes into account equivalence relationships. Terms are dragged to a direct manipulation Query Builder which maintains the facet structure.
    Theme
    Information Gateway
    Type
    a
  12. Balikova, M.: Multilingual Subject Access to Catalogues of National Libraries (MSAC) : Czech Republic's collaboration with Slovakia, Slovenia, Croatia, Macedonia, Lithuania and Latvia (2005) 0.01 
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    Abstract
    Czech authority file of topical terms is intended to form a base for multilingual controlled vocabulary. The aim of the proposal is to provide users of online library catalogues and internet services of cooperating institutions with an indexing and retrieval tool which enables multilingual and cross-domain searching ("one-stop" seamless searching). The goal of the project is to establish a multilingual subject approach to catalogues of participating libraries (Czechia, Croatia, Latvia, Lithuania, Macedonia, Slovakia, and Slovenia). In practice this means that a user in any of these countries would enter a query in his local language and receive hits from all the catalogues. The initiative is complying with the main goals currently defined by IFLA for the activity of Indexing and Classification Section, it means: Changing Roles of Subject Access Tools (Berlin), Implementation and Adaptation of Global Tools for Subject Access to Local Needs (Buenos Aires), and Cataloguing and Subject Tools for Global Access: International Partnerships (Oslo).
    Content
    The aim of this initiative is to provide the users of online library catalogues and information gateways of cooperating libraries with a prototype for multilingual subject searching in online environment. Library collections of these libraries are large and without any doubt very valuable for researchers throughout Europe. What is needed is a standardized, authorized indexing and retrieval tool which would bring together all their catalogues and databases and enable multilingual subject searching. At the beginning of the project, a number of factors affecting subject indexing in current environment and cross-searching for subjects have been identified. These factors include - standardization of subject retrieval process and indexing and classification tools - subject retrieval methods - possibility of interoperability among different indexing and classification schemes - multilingualism issue - possibility to increase precision and recall trough Z39.50 protocol and its profiles and to apply authority control in subject retrieval process - need for cooperation
    Footnote
    Vortrag, World Library and Information Congress: 71th IFLA General Conference and Council "Libraries - A voyage of discovery", August 14th - 18th 2005, Oslo, Norway.
    Type
    a
  13. Tudhope, D.; Binding, C.; Blocks, D.; Cunliffe, D.: Compound descriptors in context : a matching function for classifications and thesauri (2002) 0.00 
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    Abstract
    There are many advantages for Digital Libraries in indexing with classifications or thesauri, but some current disincentive in the lack of flexible retrieval tools that deal with compound descriptors. This paper discusses a matching function for compound descriptors, or multi-concept subject headings, that does not rely an exact matching but incorporates term expansion via thesaurus semantic relationships to produce ranked results that take account of missing and partially matching terms. The matching function is based an a measure of semantic closeness between terms, which has the potential to help with recall problems. The work reported is part of the ongoing FACET project in collaboration with the National Museum of Science and Industry and its collections database. The architecture of the prototype system and its Interface are outlined. The matching problem for compound descriptors is reviewed and the FACET implementation described. Results are discussed from scenarios using the faceted Getty Art and Architecture Thesaurus. We argue that automatic traversal of thesaurus relationships can augment the user's browsing possibilities. The techniques can be applied both to unstructured multi-concept subject headings and potentially to more syntactically structured strings. The notion of a focus term is used by the matching function to model AAT modified descriptors (noun phrases). The relevance of the approach to precoordinated indexing and matching faceted strings is discussed.
    Theme
    Information Gateway
    Type
    a
  14. Gödert, W.: Multilingualität und Lokalisierung zur Wissenserkundung : oder vom Nutzen semantischer Netze für das Information Retrieval (2007) 0.00 
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    Source
    Wa(h)re Information: 29. Österreichischer Bibliothekartag Bregenz, 19.-23.9.2006. Hrsg.: Harald Weigel
    Type
    a
  15. Schott, H.; Schroeder, A.: Crosskonkordanzen von Thesauri und Klassifikationen (2004) 0.00 
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    Abstract
    Im folgenden wird über ein Projekt berichtet, das als Arbeitspaket eingebunden war in die Sonderfördermaßnahme CARMEN (Content Analysis, Retrieval and MetaData: Effective Networking), die im Rahmen von Global Info vom BMBF gefördert wurde. Die Bearbeitung von Crosskonkordanzen war dem Themenschwerpunkt "Verfahren zur Behandlung von Heterogenität bei textueller Information verschiedener Datentypen und Inhaltserschließungsverfahren" zugeordnet. Darin ging es neben maschinellen Verfahren zur Erzeugung von Metadaten um die Behandlung semantischer Heterogenität durch Transferbeziehungen, die maschinell mit Hilfe quantitativ-statistischer Verfahren und intellektuell durch Crosskonkordanzen hergestellt wurden. Konkreter Zweck der Crosskonkordanzen ist es, eine integrierte Suche nach sachlichen Gesichtspunkten in verteilten Datenbeständen mit unterschiedlichen inhaltlichen Schwerpunkten zu ermöglichen. Die Crosskonkordanzen sollen dabei den begrifflichen Unterschieden der verwendeten Klassifikationen und Thesauri Rechnung tragen.
    Type
    a
  16. Vickery, B.C.: Classificatory principles in natural language indexing systems (1976) 0.00 
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    Source
    Classification in the 1970s: a second look. Rev. ed. Ed.: A. Maltby
    Type
    a
  17. Austin, D.: ¬The CRG research into a freely faceted scheme (1976) 0.00 
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  18. Aitchison, J.: ¬The thesaurofacet. A multipurpose retrieval language tool (1970) 0.00 
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  19. Hatapuc, A.: De la vocabular controlat la tezaur : schita de proiect pentru domeniul siintelor politice (2003) 0.00 
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    Abstract
    Building a thesaurus on the basis of the UDC
    Footnote
    Übers. des Titels: On controlled vocabulaires: a project in the field of political science -
    Type
    a
  20. Negrini, G.: CLASTHES: a thesaurofacet generator (1994) 0.00 
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    Abstract
    Describes CLASTHES, a software package which structures a system of concepts defined both as the conceptual expression of the structural relationship of a whole and as the structural relationship between the individual elements within the system itself. The external structure, which is the general structure of the system, is created by means of thesaurus facets, here defined as 'areas', while the internal structure is represented by the relationships linking the single elements attributed to the various areas
    Source
    Library science with a slant to documentation. 31(1994) no.1, S.1-12
    Type
    a

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