Search (8 results, page 1 of 1)

0.018504292 = product of:
  0.055512875 = sum of:
    0.055512875 = weight(_text_:reference in 299) [ClassicSimilarity], result of:
      0.055512875 = score(doc=299,freq=2.0), product of:
        0.205834 = queryWeight, product of:
          4.0683694 = idf(docFreq=2055, maxDocs=44218)
          0.050593734 = queryNorm
        0.2696973 = fieldWeight in 299, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0683694 = idf(docFreq=2055, maxDocs=44218)
          0.046875 = fieldNorm(doc=299)
  0.33333334 = coord(1/3)

Abstract

Purpose - The paper aims to explain the character and causes of obsolescence in assigned subject descriptors. Design/methodology/approach - The paper takes the form of a conceptual analysis with examples and reference to existing literature. Findings - Subject description comes in two forms: assigning the name or code of a subject to a document and assigning a document to a named subject category. Each method associates a document with the name of a subject. This naming activity is the site of tensions between the procedural need of information systems for stable records and the inherent multiplicity and instability of linguistic expressions. As languages change, previously assigned subject descriptions become obsolescent. The issues, tensions, and compromises involved are introduced. Originality/value - Drawing on the work of Robert Fairthorne and others, an explanation of the unavoidable obsolescence of assigned subject headings is presented. The discussion relates to libraries, but the same issues arise in any context in which subject description is expected to remain useful for an extended period of time.

0.01827934 = product of:
  0.05483802 = sum of:
    0.05483802 = product of:
      0.10967604 = sum of:
        0.10967604 = weight(_text_:22 in 5405) [ClassicSimilarity], result of:
          0.10967604 = score(doc=5405,freq=2.0), product of:
            0.17717063 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050593734 = queryNorm
            0.61904186 = fieldWeight in 5405, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.125 = fieldNorm(doc=5405)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Source

Library hi tech. 10(1992) no.4, S.7-22

0.01065704 = product of:
  0.03197112 = sum of:
    0.03197112 = product of:
      0.06394224 = sum of:
        0.06394224 = weight(_text_:database in 3849) [ClassicSimilarity], result of:
          0.06394224 = score(doc=3849,freq=2.0), product of:
            0.20452234 = queryWeight, product of:
              4.042444 = idf(docFreq=2109, maxDocs=44218)
              0.050593734 = queryNorm
            0.31264183 = fieldWeight in 3849, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.042444 = idf(docFreq=2109, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3849)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Abstract

The transition from searching in a single database to searching a multiplicity of networked databases exacerbates some old difficulties in the design and evaluation of retrieval systems and creates new one. A networked environment calls into question the traditional definitions of recall and relevance. Efficient network searching raises questions about where to look first, where to look next and when to stop searching. The need for 'entry vocabulary' support and the need for support in moving from one system vocabulary to another are increased by the increased use of more different databases. The network environment offers the option of collecting different representations of the same object and merging them into an extended record

0.01065704 = product of:
  0.03197112 = sum of:
    0.03197112 = product of:
      0.06394224 = sum of:
        0.06394224 = weight(_text_:database in 413) [ClassicSimilarity], result of:
          0.06394224 = score(doc=413,freq=2.0), product of:
            0.20452234 = queryWeight, product of:
              4.042444 = idf(docFreq=2109, maxDocs=44218)
              0.050593734 = queryNorm
            0.31264183 = fieldWeight in 413, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.042444 = idf(docFreq=2109, maxDocs=44218)
              0.0546875 = fieldNorm(doc=413)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Abstract

NISO draft standard Z39.50 (sometimes called the "Linked Systems Protocol") provides a standard for linking computers to permit the searching and retrieval of machine-readable bibliographic and authority records. The concept, context, status, and potential of the Linked Systems Protocol are reviewed in relation to the historical development of bibliographies and library catalogs. The functions of a fully developed bibliographic Linked Systems Protocol are summarized and shown to have extensive implications for scholarship, bibliographic access, and the notion of a national database. Effective international use of such a protocol would require the solution of several traditional problems.

0.00913967 = product of:
  0.02741901 = sum of:
    0.02741901 = product of:
      0.05483802 = sum of:
        0.05483802 = weight(_text_:22 in 4226) [ClassicSimilarity], result of:
          0.05483802 = score(doc=4226,freq=2.0), product of:
            0.17717063 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050593734 = queryNorm
            0.30952093 = fieldWeight in 4226, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=4226)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Date

13. 6.1996 19:22:20

0.009134606 = product of:
  0.027403818 = sum of:
    0.027403818 = product of:
      0.054807637 = sum of:
        0.054807637 = weight(_text_:database in 97) [ClassicSimilarity], result of:
          0.054807637 = score(doc=97,freq=2.0), product of:
            0.20452234 = queryWeight, product of:
              4.042444 = idf(docFreq=2109, maxDocs=44218)
              0.050593734 = queryNorm
            0.26797873 = fieldWeight in 97, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.042444 = idf(docFreq=2109, maxDocs=44218)
              0.046875 = fieldNorm(doc=97)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Abstract

Bibliographies and their knowledge organization systems commonly cover broad topical areas. Indexes to knowledge organization systems, such as the Subject Index to the Dewey Decimal Classification, provide a general index to the entirety. However, every community and every specialty develops its own specialized vocabulary. An index derived from the specialized use of language within a single subdomain could well be different from a general-purpose index for all domains and preferable for that subdomain. Statistical association techniques can be used to create indexes to knowledge systems. A preliminary analysis based on the INSPEC database shows that subdomain indexes differ significantly from each other and from a general index. The greater the polysemy of individual words the greater difference in the indexes

0.007997211 = product of:
  0.023991633 = sum of:
    0.023991633 = product of:
      0.047983266 = sum of:
        0.047983266 = weight(_text_:22 in 4546) [ClassicSimilarity], result of:
          0.047983266 = score(doc=4546,freq=2.0), product of:
            0.17717063 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050593734 = queryNorm
            0.2708308 = fieldWeight in 4546, 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=4546)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Source

Library hi tech. 10(1992) no.4, S.7-22

0.005712294 = product of:
  0.017136881 = sum of:
    0.017136881 = product of:
      0.034273762 = sum of:
        0.034273762 = weight(_text_:22 in 1399) [ClassicSimilarity], result of:
          0.034273762 = score(doc=1399,freq=2.0), product of:
            0.17717063 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050593734 = queryNorm
            0.19345059 = fieldWeight in 1399, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1399)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Source

Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik