Search (19 results, page 1 of 1)

  • × theme_ss:"Verbale Doksprachen im Online-Retrieval"
  • × type_ss:"a"
  • × year_i:[1980 TO 1990}
  1. Schabas, A.H.: Postcoordinate retrieval : a comparison of two retrieval languages (1982) 0.02 
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    Abstract
    This article reports on a comparison of the postcoordinate retrieval effectiveness of two indexing languages: LCSH and PRECIS. The effect of augmenting each with title words was also studies. The database for the study was over 15.000 UK MARC records. Users returned 5.326 relevant judgements for citations retrieved for 61 SDI profiles, representing a wide variety of subjects. Results are reported in terms of precision and relative recall. Pure/applied sciences data and social science data were analyzed separately. Cochran's significance tests for ratios were used to interpret the findings. Recall emerged as the more important measure discriminating the behavior of the two languages. Addition of title words was found to improve recall of both indexing languages significantly. A direct relationship was observed between recall and exhaustivity. For the social sciences searches, recalls from PRECIS alone and from PRECIS with title words were significantly higher than those from LCSH alone and from LCSH with title words, respectively. Corresponding comparisons for the pure/applied sciences searches revealed no significant differences
    Source
    Journal of the American Society for Information Science. 33(1982), S.32-37
    Theme
    Verbale Doksprachen im Online-Retrieval
  2. Anderson, J.D.: Indexing and classification : file organization and display for information retrieval (1989) 0.01 
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    Theme
    Klassifikationssysteme im Online-Retrieval
    Verbale Doksprachen im Online-Retrieval
  3. DeHart, F.E.; Glazier, J.: Computer searching on PRECIS : an exploration of measuring comparative retrieval effectiveness (1984) 0.01 
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    Abstract
    Designing research on the retrieval effectiveness of computer searches on PRECIS compared with retrieval effectiveness of searches on other types of subject analysis used in computer-based information sources is a complex process. This paper explores the complexity of measuring comparative retrieval effectiveness through a comparison of the subject analysis provided by the PRECIS system for fifty articles with the subject analysis provided for the same articles by three computer-based information sources: ERIC/CIJE, LLBA/Online and PsycINFO. Objectives are: (1) to discover factors that should be taken into account when designing this type of research; and (2) to identify extraneous variables that work against internal validity in research design .
    Theme
    Verbale Doksprachen im Online-Retrieval
  4. Bates, M.J.: Subject access in online catalogs: a design model (1986) 0.01 
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    Source
    Journal of the American Society for Information Science. 37(1986), S.357-367
    Theme
    Verbale Doksprachen im Online-Retrieval
  5. Devadason, F.J.; Kumbhar, M.R.: Language and indexing language : Nalimor and Gardin revised (1988) 0.01 
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    Abstract
    Studies the salient features of ordinary language as a means of designing languages for information storage and retrieval systems. Pays particular attention to the POPSI (Postulate-based Permuted Subject Indexing) language.
    Theme
    Verbale Doksprachen im Online-Retrieval
  6. Svenonius, E.: Design of controlled vocabularies in the context of emerging technologies (1988) 0.01 
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    Abstract
    Delineates on the changing role of vocabulary control devices such as classification, subject headings, and thesaurus. Identifies the basic issue in the design and development of these devices and their role in the changing information technology. The paper identifies the differentiations needed in the new roles of these devices in data base technology
    Source
    Library science with a slant to documentation and information studies. 25(1988), S.215-227
    Theme
    Verbale Doksprachen im Online-Retrieval
    Klassifikationssysteme im Online-Retrieval
  7. Boeckx, T.: Onderwerpontsluiting in de on-line publiekscatalogus (1986) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
    Klassifikationssysteme im Online-Retrieval
  8. Mischo, W.H.: ¬A subject retrieval function based on computer manipulated Library of Congress Subject Headings (1982) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  9. Bates, M.J.: Rethinking subject cataloging in the online environment (1989) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  10. Studwell, W.E.: Retrieving LC Subject Headings : long chains versus an increased number of headings (1989) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  11. Simonds, M.J.: Database limitations & online catalogs (1984) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  12. Cochrane, P.A.: Subject access in the online catalog (1982) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  13. Hoffman, H.: LCSH online (1987) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  14. Markey, K.; Atherton, P.; Newton, C.: ¬An analysis of controlled vocabulary and free text search statements in online searches (1980) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  15. Pietris, M.K.D.: Characteristics of LC Subject Headings that should be taken into account when designing on-line catalogues (1987) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  16. Dykstra, M.: PRECIS in the online catalog (1989) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  17. Bates, M.J.: How to use controlled vocabularies more effectively in online searching (1989) 0.00 
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    Abstract
    Optimal retrieval in on-line searching can be achieved through combined use of both natural language and controlled vocabularies. However, there is a large variety of types of controlled vocabulary in data bases and often more than one in a single data base. Optimal use of these vocabularies requires understanding what types of languages are involved, and taking advantage of the particular mix of vocabularies in a given data base. Examples 4 major types of indexing and classification used in data bases and puts these 4 in the context of 3 other approaches to subject access. Discusses how to evaluate a new data base for various forms of subject access.
    Theme
    Verbale Doksprachen im Online-Retrieval
  18. Bates, M.J.: How to use controlled vocabularies more effectively in online searching (1989) 0.00 
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    Abstract
    Optimal retrieval in on-line searching can be achieved through combined use of both natural language and controlled vocabularies. However, there is a large variety of types of controlled vocabulary in data bases and often more than one in a single data base. Optimal use of these vocabularies requires understanding what types of languages are involved, and taking advantage of the particular mix of vocabularies in a given data base. Examples 4 major types of indexing and classification used in data bases and puts these 4 in the context of 3 other approaches to subject access. Discusses how to evaluate a new data base for various forms of subject access.
    Theme
    Verbale Doksprachen im Online-Retrieval
  19. Congreve, J.: Problems of subject access : automatic generation of printed indexes and online thesaural control (1986) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval

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