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  • × theme_ss:"Information Gateway"
  1. Tudhope, D.; Binding, C.; Blocks, D.; Cunliffe, D.: FACET: thesaurus retrieval with semantic term expansion (2002) 0.03 
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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.
  2. Tudhope, D.; Binding, C.; Blocks, D.; Cunliffe, D.: Compound descriptors in context : a matching function for classifications and thesauri (2002) 0.02 
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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.
  3. MacLeod, R.: Promoting a subject gateway : a case study from EEVL (Edinburgh Engineering Virtual Library) (2000) 0.02 
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    Date
    22. 6.2002 19:40:22
  4. Subject gateways (2000) 0.02 
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    Date
    22. 6.2002 19:43:01
  5. Milanesi, C.: Möglichkeiten der Kooperation im Rahmen von Subject Gateways : das Euler-Projekt im Vergleich mit weiteren europäischen Projekten (2001) 0.02 
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    Date
    22. 6.2002 19:41:59
  6. Lim, E.: Southeast Asian subject gateways : an examination of their classification practices (2000) 0.02 
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    Date
    22. 6.2002 19:42:47
  7. Shiri, A.; Chambers, T.: Information retrieval from digital libraries : assessing the potential utility of thesauri in supporting users' search behaviour in an interdisciplinary domain (2008) 0.01 
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    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  8. Price, A.: Five new Danish subject gateways under development (2000) 0.01 
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    Date
    22. 6.2002 19:41:31
  9. Gardner, T.; Iannella, R.: Architecture and software solutions (2000) 0.01 
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    Date
    22. 6.2002 19:38:24
  10. Peereboom, M.: DutchESS : Dutch Electronic Subject Service - a Dutch national collaborative effort (2000) 0.01 
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    Date
    22. 6.2002 19:39:23
  11. Campbell, D.: Australian subject gateways : political and strategic issues (2000) 0.01 
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    22. 6.2002 19:41:16
  12. Dempsey, L.: ¬The subject gateway : experiences and issues based on the emergence of the Resource Discovery Network (2000) 0.01 
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    22. 6.2002 19:36:13
  13. Kaizik, A.; Gödert, W.; Milanesi, C.: Erfahrungen und Ergebnisse aus der Evaluierung des EU-Projektes EULER im Rahmen des an der FH Köln angesiedelten Projektes EJECT (Evaluation von Subject Gateways des World Wide Web (2001) 0.01 
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    22. 6.2002 19:42:22
  14. Heery, R.: Information gateways : collaboration and content (2000) 0.01 
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    22. 6.2002 19:38:54
  15. Price, A.: NOVAGate : a Nordic gateway to electronic resources in the forestry, veterinary and agricultural sciences (2000) 0.01 
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  16. Koch, T.: Quality-controlled subject gateways : definitions, typologies, empirical overview (2000) 0.01 
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    Date
    22. 6.2002 19:37:55
  17. Mitchell, S.; Mason, J.; Pender, L.: Enabling technologies and service designs for collaborative Internet collection building (2004) 0.01 
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    Source
    Library hi tech. 22(2004) no.3, S.295-306
  18. Schaer, P.: Integration von Open-Access-Repositorien in Fachportale (2010) 0.01 
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    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
  19. Cervone, F.: Library portals and gateways (2009) 0.01 
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    Date
    27. 8.2011 14:22:27
  20. Place, E.: Internationale Zusammenarbeit bei Internet Subject Gateways (1999) 0.01 
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    Date
    22. 6.2002 19:35:09

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