Search (8 results, page 1 of 1)

  • × theme_ss:"Indexierungsstudien"
  • × year_i:[1980 TO 1990}
  1. Azubuike, A.A.; Umoh, J.S.: Computerized information storage and retrieval systems (1988) 0.01
    0.006866273 = product of:
      0.027465092 = sum of:
        0.027465092 = weight(_text_:information in 4153) [ClassicSimilarity], result of:
          0.027465092 = score(doc=4153,freq=2.0), product of:
            0.08850355 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.050415643 = queryNorm
            0.3103276 = fieldWeight in 4153, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.125 = fieldNorm(doc=4153)
      0.25 = coord(1/4)
    
  2. Saracevic, T.: Measuring the degree of agreement between searchers (1984) 0.01
    0.005149705 = product of:
      0.02059882 = sum of:
        0.02059882 = weight(_text_:information in 2410) [ClassicSimilarity], result of:
          0.02059882 = score(doc=2410,freq=2.0), product of:
            0.08850355 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.050415643 = queryNorm
            0.23274569 = fieldWeight in 2410, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.09375 = fieldNorm(doc=2410)
      0.25 = coord(1/4)
    
    Source
    Challenges to an information society : proceedings of the 47th ASIS annual Meeting, Philadelphia, Pennsylvania, October 21-25, 1984. Ed.: Barbara Flood
  3. Broxis, P.F.: ASSIA social science information service (1989) 0.00
    0.0042914203 = product of:
      0.017165681 = sum of:
        0.017165681 = weight(_text_:information in 1511) [ClassicSimilarity], result of:
          0.017165681 = score(doc=1511,freq=2.0), product of:
            0.08850355 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.050415643 = queryNorm
            0.19395474 = fieldWeight in 1511, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.078125 = fieldNorm(doc=1511)
      0.25 = coord(1/4)
    
  4. Deaves, J.C.; Pache, J.E.: Chemical and numerical indexing for the INSPEC database (1989) 0.00
    0.00424829 = product of:
      0.01699316 = sum of:
        0.01699316 = weight(_text_:information in 2289) [ClassicSimilarity], result of:
          0.01699316 = score(doc=2289,freq=4.0), product of:
            0.08850355 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.050415643 = queryNorm
            0.1920054 = fieldWeight in 2289, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2289)
      0.25 = coord(1/4)
    
    Abstract
    The wealth of chemical information on the INSPEC database is easily retrieved using the printed subject indexes to the associated abstract journals. However, this subject indexing is insufficient for machine retrieval, and free-text searching has special difficulties. An easy-to-use retrieval system has been developed which overcomes many problems, especially the retrieval of non-stoichiometric compositions, which are a feature solid-state chemistry. The scheme is limited to inorganic material, but allows flexibility and identification of dopants, interfaces and surfaces or substrates. At the same time, a system has been introduced for the online retrieval of numerical data included in the data base. This has successfully standardized the way in which such data is held for searching, enabling further refinement of searches where numerical information is significant
  5. Chan, L.M.: Inter-indexer consistency in subject cataloging (1989) 0.00
    0.0034331365 = product of:
      0.013732546 = sum of:
        0.013732546 = weight(_text_:information in 2276) [ClassicSimilarity], result of:
          0.013732546 = score(doc=2276,freq=2.0), product of:
            0.08850355 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.050415643 = queryNorm
            0.1551638 = fieldWeight in 2276, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0625 = fieldNorm(doc=2276)
      0.25 = coord(1/4)
    
    Source
    Information technology and libraries. 8(1989), S.349-358
  6. Prasher, R.G.: Evaluation of indexing system (1989) 0.00
    0.0034331365 = product of:
      0.013732546 = sum of:
        0.013732546 = weight(_text_:information in 4998) [ClassicSimilarity], result of:
          0.013732546 = score(doc=4998,freq=2.0), product of:
            0.08850355 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.050415643 = queryNorm
            0.1551638 = fieldWeight in 4998, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0625 = fieldNorm(doc=4998)
      0.25 = coord(1/4)
    
    Abstract
    Describes information system and its various components-index file construstion, query formulation and searching. Discusses an indexing system, and brings out the need for its evaluation. Explains the concept of the efficiency of indexing systems and discusses factors which control this efficiency. Gives criteria for evaluation. Discusses recall and precision ratios, as also noise ratio, novelty ratio, and exhaustivity and specificity and the impact of each on the efficiency of indexing system. Mention also various steps for evaluation.
  7. Boyce, B.R.; McLain, J.P.: Entry point depth and online search using a controlled vocabulary (1989) 0.00
    0.0030039945 = product of:
      0.012015978 = sum of:
        0.012015978 = weight(_text_:information in 2287) [ClassicSimilarity], result of:
          0.012015978 = score(doc=2287,freq=2.0), product of:
            0.08850355 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.050415643 = queryNorm
            0.13576832 = fieldWeight in 2287, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2287)
      0.25 = coord(1/4)
    
    Source
    Journal of the American Society for Information Science. 40(1989), S.273-276
  8. Bellamy, L.M.; Bickham, L.: Thesaurus development for subject cataloging (1989) 0.00
    0.0025748524 = product of:
      0.01029941 = sum of:
        0.01029941 = weight(_text_:information in 2262) [ClassicSimilarity], result of:
          0.01029941 = score(doc=2262,freq=2.0), product of:
            0.08850355 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.050415643 = queryNorm
            0.116372846 = fieldWeight in 2262, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046875 = fieldNorm(doc=2262)
      0.25 = coord(1/4)
    
    Abstract
    The biomedical book collection in the Genetech Library and Information Services was first inventoried and cataloged in 1983 when it totaled about 2000 titles. Cataloging records were retrieved from the OCLC system and used as a basis for cataloging. A year of cataloging produced a list of 1900 subject terms. More than one term describing the same concept often appears on the list, and no hierarchical structure related the terms to one another. As the collection grew, the subject catalog became increasingly inconsistent. To bring consistency to subject cataloging, a thesaurus of biomedical terms was constructed using the list of subject headings as a basis. This thesaurus follows the broad categories of the National Library of Medicine's Medical Subject Headings and, with some exceptions, the Guidelines for the Establishment and Development of Monolingual Thesauri. It has enabled the cataloger in providing greater in-depth subject analysis of materials added to the collection and in consistently assigning subject headings to cataloging record.