Search (55 results, page 2 of 3)

  • × theme_ss:"Verbale Doksprachen im Online-Retrieval"
  • × type_ss:"a"
  • × year_i:[1990 TO 2000}
  1. Schulz, U.: ¬Die niederländische Basisklassifikation: eine Alternative für die "Sachgruppen" im Fremddatenangebot der Deutschen Bibliothek (1991) 0.00 
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  2. Piternick, A.B.: Vocabularies for online subject searching (1990) 0.00 
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  3. Zeng, L.: Achieving compatibility of indexing languages in online access environment (1992) 0.00 
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  4. Weidemüller, H.-U.: Schlagwortketten im OPAC (1996) 0.00 
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  5. Klauss, H.: Anregungen zu einer Schlagwort-Verwaltung in elektronischen Bibliothekskatalogen (1996) 0.00 
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  6. Voorbij, H.: ¬Een goede titel behoeft geen trefwoord, of toch wel? : een vergelijkend oderzoek titelwoorden - trefwoorden (1997) 0.00 
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    Abstract
    A recent survey at the Royal Library in the Netherlands showed that subject headings are more efficient than title keywords for retrieval purposes. 475 Dutch publications were selected at random and assigned subject headings. The study showed that subject headings provided additional useful information in 56% of titles. Subsequent searching of the library's online catalogue showed that 88% of titles were retrieved via subject headings against 57% through title keywords. Further precision may be achieved with the help of indexing staff, but at considerable cost
    Footnote
    Übers. d. Titels: A good title has no need of subject headings, or does it?: a comparative study of title keywords against subject headings
    Type
    a
  7. Allen, B.: Improved browsable displays : an experimental test (1993) 0.00 
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    Abstract
    Browse searching of online catalogs and electronic indexes is a popular means of retrieving information, but some subject heading lists are so extensive that browsing them can be difficult and time-consuming. This resaerch tested one way of presenting a browse interface to reduce the amount of scanning of subject headings required. It found that a hierarchical presentation of headings reduced the amount of scanning required by more than 50% without any reduction in the effectiveness of the search. Better browsable displays of this sort can improve the efficiency of searching but appear not to alter effectivenenss
    Type
    a
  8. Hoffman, H.H.: Improving chronological order of history subject headings in online catalogs (1998) 0.00 
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  9. Svenonius, E.: Precoordination or not? (1995) 0.00 
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    Content
    Vgl. auch: Sauperl, A.: Precoordination or not?: a new view of the old question. In: Journal of documentation. 65(2009) no.5, S.817-833.
    Type
    a
  10. Jüngling, H.: Bibliothekarische und dokumentarische Sachererschließung auf gemeinsamen Weg in die Zukunft? : Aus bibliothekarischer Sicht (1991) 0.00 
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  11. Gomez, L.; Lochbaum, C.C.; Landauer, T.K.: All the right words: finding what you want as an function of richness of indexing vocabulary (1990) 0.00 
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  12. Trinkhaus, M.: Möglichkeiten und Aspekte des sachlichen Zugriffs in Online-Katalogen (1990) 0.00 
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  13. Cochrane, P.A.: Indexing and searching thesauri, the Janus or Proteus of information retrieval (1992) 0.00 
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  14. Keen, E.M.: Aspects of computer-based indexing languages (1991) 0.00 
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    Abstract
    Comments on the relative rarity of research articles on theoretical aspects of subject indexing in computerised retrieval systems and the predominance of articles on software packages and hardware. Concludes that controlled indexing still has a future but points to major differences from the past
    Type
    a
  15. Chen, H.; Yim, T.; Fye, D.: Automatic thesaurus generation for an electronic community system (1995) 0.00 
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    Abstract
    Reports an algorithmic approach to the automatic generation of thesauri for electronic community systems. The techniques used included terms filtering, automatic indexing, and cluster analysis. The testbed for the research was the Worm Community System, which contains a comprehensive library of specialized community data and literature, currently in use by molecular biologists who study the nematode worm. The resulting worm thesaurus included 2709 researchers' names, 798 gene names, 20 experimental methods, and 4302 subject descriptors. On average, each term had about 90 weighted neighbouring terms indicating relevant concepts. The thesaurus was developed as an online search aide. Tests the worm thesaurus in an experiment with 6 worm researchers of varying degrees of expertise and background. The experiment showed that the thesaurus was an excellent 'memory jogging' device and that it supported learning and serendipitous browsing. Despite some occurrences of obvious noise, the system was useful in suggesting relevant concepts for the researchers' queries and it helped improve concept recall. With a simple browsing interface, an automatic thesaurus can become a useful tool for online search and can assist researchers in exploring and traversing a dynamic and complex electronic community system
    Type
    a
  16. Bisig, U.: Kriterien der Benutzerfreundlichkeit von Sachkatalogen : ein Überblick auf dem Hintergrund von RSWK und OPACs (1995) 0.00 
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  17. Geisselmann, F.; Zerbst, H.-J.: Sacherschließung in Online-Katalogen : Stand der Diskussion (1996) 0.00 
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  18. Ralston, N.M.: Controlled vocabularies for MEDLARS databases (1995) 0.00 
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    Abstract
    For many years, searching medical and health-related topics has caused thousands of searchers to consult the well-known Medical Subject Headings (MeSH) controlled vocabulary. This plan works well for searching MEDLINE, but what about the MEDLARS databases such as TOXLIT, BIOETHICSLINE and POPLINE? Several printed vocabularies are available for searchers who wish to benefit from the consistency afforded by consulting established term lists. Occasionally, use of keywords from vocabularies other than MeSH is recommended even when information in the database is also indexed to MeSH. Search techniques available for use with several of the controlled vocabularies which are discussed vary, but built-in consistency of term use is a continuing theme from one controlled vocabulary to another
    Type
    a
  19. Drabenstott, K.M.; Weller, M.S.: ¬The exact-display approach for online catalog subject searching (1996) 0.00 
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    Abstract
    Introducess a new approach to display retrieved subject headings in subject searching designed to encourage users to browse bibliographic information. Emphasizes the importance of the exact display approach by showing how many user queries could be candidates for this approach, demonstrates an implementation of the exact-display approach in an experimental online catalogue. End user experiences gives opportunities to make recommendations for enhancing the original design of the exact display approach so that future implementations of this approach in operational online catalogues are responsive to the needs of online catalogue users
    Type
    a
  20. Connell, T.H.: Use of the LCSH system : realities (1996) 0.00 
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    Abstract
    Explores the question of whether academic libraries keep up with the changes in the LCSH system. Analysis of the handling of 15 subject headings in 50 academic library catalogues available via the Internet found that libraries are not consistently maintaining subject authority control, or making syndetic references and scope notes in their catalogues. Discusses the results from the perspective of the libraries' performance, performance on the headings overall, performance on references, performance on the type of change made to the headings,a nd performance within 3 widely used onlien catalogue systems (DRA, INNOPAC and NOTIS). Discusses the implications of the findings in relationship to expressions of dissatisfaction with the effectiveness of subject cataloguing expressed by discussion groups on the Internet
    Type
    a

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