Search (9 results, page 1 of 1)

  • × year_i:[1990 TO 2000}
  • × author_ss:"Vizine-Goetz, D."
  1. Vizine-Goetz, D.: Cataloging productivity tool : II. Subject headings for children (1994) 0.05 
    0.053236254 = product of:
  0.10647251 = sum of:
    0.10647251 = product of:
      0.21294501 = sum of:
        0.21294501 = weight(_text_:headings in 6817) [ClassicSimilarity], result of:
          0.21294501 = score(doc=6817,freq=2.0), product of:
            0.24837378 = queryWeight, product of:
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.051211677 = queryNorm
            0.8573571 = fieldWeight in 6817, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.125 = fieldNorm(doc=6817)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  2. Chan, L.M.; Vizine-Goetz, D.: Errors and obsolete elements in assigned Library of Congress Subject Headings : implications for subject cataloging and subject authority control (1997) 0.05 
    0.05207995 = product of:
  0.1041599 = sum of:
    0.1041599 = product of:
      0.2083198 = sum of:
        0.2083198 = weight(_text_:headings in 492) [ClassicSimilarity], result of:
          0.2083198 = score(doc=492,freq=10.0), product of:
            0.24837378 = queryWeight, product of:
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.051211677 = queryNorm
            0.8387351 = fieldWeight in 492, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.0546875 = fieldNorm(doc=492)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    An analysis of a sample of 9.442 headings assigned by the LoC to bibliographic records disclosed 2 types of invalid headings: those that were erroneous and those that were obsolete. Each type revealed recurring patterns. Errors and obsolete elements occuring in assigned heading involve MARC coding, terminology in main headings and subdivisions, application of subdivisions, and in mechanical elements such as punctuation and capitalization. Different headings (e.g. personal name, corporate name, topical, etc.) display different patterns as well as predominance of errors and obsoleteness. Although the overall error rate is low, an awareness and understanding of patterns of errors and obsolescnce in subject heading strings should contribute to improvement in subject heading assignment and subject authority control
  3. Chan, L.M.; Vizine-Goetz, D.: Towards a computer-generated subject validation file : feasibility and usefulness (1998) 0.05 
    0.049908984 = product of:
  0.09981797 = sum of:
    0.09981797 = product of:
      0.19963594 = sum of:
        0.19963594 = weight(_text_:headings in 1781) [ClassicSimilarity], result of:
          0.19963594 = score(doc=1781,freq=18.0), product of:
            0.24837378 = queryWeight, product of:
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.051211677 = queryNorm
            0.8037722 = fieldWeight in 1781, product of:
              4.2426405 = tf(freq=18.0), with freq of:
                18.0 = termFreq=18.0
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1781)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Recognition, by libraries, of the need for improved efficiency and reliability in subject authority control in catalogues led to a study of the feasibility of automatically creating a subject heading validation file by scanning the OLUC. The premises were: that although the file would not be axhaustive, it would contain the majority of frequently used headings; and that the predicted level of accurary in the file would be high. A sample file of Library of Congress assigned subject headings, from the OCLC Subject Headings Corrections database was analyzed. Results showed that: the frequency of use varies inversely with the number of headings at a given rrate of use; a small number of headings with high frequencies of use accounts for the majority of total use, while a large proportion shows very low frequency of use; topical headings account for 2/3 of assigned headings; and error and obsolescence rates are both low and are in inverse relationship to the frequency of heading use. Concludes that an automatically generated subject heading validation file is feasible and could serve various purposes, including: verification of subject heading strings constructed by cataloguers; updating of subject headings in catalogue maintenance; and validation of subject headings during retrospective catalogue conversion
  4. Vizine-Goetz, D.: Subject headings for everyone : popular Library of Congress Subject Headings with Dewey numers (1998) 0.05 
    0.04705465 = product of:
  0.0941093 = sum of:
    0.0941093 = product of:
      0.1882186 = sum of:
        0.1882186 = weight(_text_:headings in 6217) [ClassicSimilarity], result of:
          0.1882186 = score(doc=6217,freq=4.0), product of:
            0.24837378 = queryWeight, product of:
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.051211677 = queryNorm
            0.7578038 = fieldWeight in 6217, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.078125 = fieldNorm(doc=6217)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  5. Chan, L.M.; Vizine-Goetz, D.: Feasibility of a computer-generated subject validation file based on frequency of occurrence of assigned LC Subject Headings (1995) 0.04 
    0.039927192 = product of:
  0.079854384 = sum of:
    0.079854384 = product of:
      0.15970877 = sum of:
        0.15970877 = weight(_text_:headings in 6816) [ClassicSimilarity], result of:
          0.15970877 = score(doc=6816,freq=2.0), product of:
            0.24837378 = queryWeight, product of:
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.051211677 = queryNorm
            0.6430178 = fieldWeight in 6816, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.09375 = fieldNorm(doc=6816)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  6. Drabenstott, K.M.; Vizine-Goetz, D.: Using subject headings for online retrieval : theory, practice and potential (1994) 0.03 
    0.034577962 = product of:
  0.069155924 = sum of:
    0.069155924 = product of:
      0.13831185 = sum of:
        0.13831185 = weight(_text_:headings in 386) [ClassicSimilarity], result of:
          0.13831185 = score(doc=386,freq=6.0), product of:
            0.24837378 = queryWeight, product of:
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.051211677 = queryNorm
            0.55686975 = fieldWeight in 386, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.046875 = fieldNorm(doc=386)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Using subject headings for Online Retrieval is an indispensable tool for online system desingners who are developing new systems or refining exicting ones. The book describes subject analysis and subject searching in online catalogs, including the limitations of retrieval, and demonstrates how such limitations can be overcome through system design and programming. The book describes the Library of Congress Subject headings system and system characteristics, shows how information is stored in machine readable files, and offers examples of and recommendations for successful methods. Tables are included to support these recommendations, and diagrams, graphs, and bar charts are used to provide results of data analyses.
  7. Vizine-Goetz, D.: From book classification to knowledge organization : improving resource description and discovery (1997) 0.02 
    0.023290861 = product of:
  0.046581723 = sum of:
    0.046581723 = product of:
      0.093163446 = sum of:
        0.093163446 = weight(_text_:headings in 2531) [ClassicSimilarity], result of:
          0.093163446 = score(doc=2531,freq=2.0), product of:
            0.24837378 = queryWeight, product of:
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.051211677 = queryNorm
            0.37509373 = fieldWeight in 2531, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2531)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    OCLC's NetFirst Internet database includes DDC numbers and LoC subject headings to facilitate access to resources. 3 OCLC research projects are helping explore the potential of DDC as a knowledge-structuring tool for large collections of electronic documents. The Scorpion system explores indexing and cataloguing of electronic resources, with emphasis on building tools for automatic subject recognition using schemes like the DDC. Dewey ETC Trees and Wordsmith are concerned with expanding the Deqey knowledge based and enhancing the vocabulary and terminology of the DDC
  8. Vizine-Goetz, D.; Drabenstott, K.M.: Computer and manual analysis of subject terms entered by online catalog users (1991) 0.02 
    0.019963596 = product of:
  0.039927192 = sum of:
    0.039927192 = product of:
      0.079854384 = sum of:
        0.079854384 = weight(_text_:headings in 3679) [ClassicSimilarity], result of:
          0.079854384 = score(doc=3679,freq=2.0), product of:
            0.24837378 = queryWeight, product of:
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.051211677 = queryNorm
            0.3215089 = fieldWeight in 3679, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.849944 = idf(docFreq=940, maxDocs=44218)
              0.046875 = fieldNorm(doc=3679)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Subject queries were extracted from 3 universities' online catalogues and analysed to determine the extend to which they matched subject headings in the LCSH. Computer analyses show that nearly 25% of the subject queries entered by online catalogue users are exact matches of LCSH. Yet, manual analyses show that, even though a user matches or closely matches LCSH-mr, the citations retrieved by this vocabulary are not necessarily satisfactory. Sometimes the closest LCSH-mr is not at all pertinent to a user's topic of interest. This study presents reasons why close matches of LCSH-mr are not always satisfactory and suggests approaches to finding the best matches of the catalogue's controlled vocabulary
  9. Vizine-Goetz, D.: OCLC investigates using classification tools to organize Internet data (1998) 0.01 
    0.012142331 = product of:
  0.024284663 = sum of:
    0.024284663 = product of:
      0.048569325 = sum of:
        0.048569325 = weight(_text_:22 in 2342) [ClassicSimilarity], result of:
          0.048569325 = score(doc=2342,freq=2.0), product of:
            0.17933457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051211677 = queryNorm
            0.2708308 = fieldWeight in 2342, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2342)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 9.1997 19:16:05

Authors

Types

Themes