Search (6 results, page 1 of 1)

O'Neill, E.T.; Chan, L.M.; Childress, E.; Dean, R.; El-Hoshy, L.M.; Vizine-Goetz, D.: Form subdivisions : their identification and use in LCSH (2001) 0.07
```
0.06938817 = product of:
  0.13877635 = sum of:
    0.13877635 = sum of:
      0.09743616 = weight(_text_:90 in 2205) [ClassicSimilarity], result of:
        0.09743616 = score(doc=2205,freq=2.0), product of:
          0.2733978 = queryWeight, product of:
            5.376119 = idf(docFreq=555, maxDocs=44218)
            0.050854117 = queryNorm
          0.3563897 = fieldWeight in 2205, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.376119 = idf(docFreq=555, maxDocs=44218)
            0.046875 = fieldNorm(doc=2205)
      0.041340183 = weight(_text_:22 in 2205) [ClassicSimilarity], result of:
        0.041340183 = score(doc=2205,freq=2.0), product of:
          0.17808245 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.050854117 = queryNorm
          0.23214069 = fieldWeight in 2205, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=2205)
  0.5 = coord(1/2)
```
Abstract

Form subdivisions have always been an important part of the Library of Congress Subject Headings. However, when the MARC format was developed, no separate subfield code to identify form subdivisions was defined. Form and topical subdivisions were both included within a general subdivision category. In 1995, the USMARC Advisory Group approved a proposal defining subfield v for form subdivisions, and in 1999 the Library of Congress (LC) began identifying form subdivisions with the new code. However, there are millions of older bibliographic records lacking the explicit form subdivision coding. Identifying form subdivisions retrospectively is not a simple task. An algorithmic method was developed to identify form subdivisions coded as general subdivisions. The algorithm was used to identify 2,563 unique form subdivisions or combinations of form subdivisions in OCLC's WorldCat. The algorithm proved to be highly accurate with an error rate estimated to be less than 0.1%. The observed usage of the form subdivisions was highly skewed with the 100 most used form subdivisions or combinations of subdivisions accounting for 90% of the assignments.

Date

10. 9.2000 17:38:22

Chan, L.M.: Subject access systems in the USA (1995) 0.03

0.032478724 = product of:
  0.06495745 = sum of:
    0.06495745 = product of:
      0.1299149 = sum of:
        0.1299149 = weight(_text_:90 in 1633) [ClassicSimilarity], result of:
          0.1299149 = score(doc=1633,freq=2.0), product of:
            0.2733978 = queryWeight, product of:
              5.376119 = idf(docFreq=555, maxDocs=44218)
              0.050854117 = queryNorm
            0.4751863 = fieldWeight in 1633, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.376119 = idf(docFreq=555, maxDocs=44218)
              0.0625 = fieldNorm(doc=1633)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source: Subject indexing: principles and practices in the 90's. Proceedings of the IFLA Satellite Meeting Held in Lisbon, Portugal, 17-18 August 1993, and sponsored by the IFLA Section on Classification and Indexing and the Instituto da Biblioteca Nacional e do Livro, Lisbon, Portugal. Ed.: R.P. Holley et al

Chan, L.M.; Mitchell, J.S.: Dewey Decimal Classification : principles and applications (2003) 0.02

0.024115108 = product of:
  0.048230216 = sum of:
    0.048230216 = product of:
      0.09646043 = sum of:
        0.09646043 = weight(_text_:22 in 3247) [ClassicSimilarity], result of:
          0.09646043 = score(doc=3247,freq=2.0), product of:
            0.17808245 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050854117 = queryNorm
            0.5416616 = fieldWeight in 3247, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.109375 = fieldNorm(doc=3247)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Object: DDC-22

Chan, L.M.: Library of Congress Subject Headings : principles and application (1995) 0.02

0.020670092 = product of:
  0.041340183 = sum of:
    0.041340183 = product of:
      0.08268037 = sum of:
        0.08268037 = weight(_text_:22 in 3985) [ClassicSimilarity], result of:
          0.08268037 = score(doc=3985,freq=2.0), product of:
            0.17808245 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050854117 = queryNorm
            0.46428138 = fieldWeight in 3985, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=3985)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 25.11.2005 18:37:22

Chan, L.M.; Hodges, T.: Entering the millennium : a new century for LCSH (2000) 0.01

0.010335046 = product of:
  0.020670092 = sum of:
    0.020670092 = product of:
      0.041340183 = sum of:
        0.041340183 = weight(_text_:22 in 5920) [ClassicSimilarity], result of:
          0.041340183 = score(doc=5920,freq=2.0), product of:
            0.17808245 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050854117 = queryNorm
            0.23214069 = fieldWeight in 5920, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=5920)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 27. 5.2001 16:22:21

Chan, L.M.; Hodges, T.L.: Library of Congress Classification (LCC) (2009) 0.01

0.010335046 = product of:
  0.020670092 = sum of:
    0.020670092 = product of:
      0.041340183 = sum of:
        0.041340183 = weight(_text_:22 in 3842) [ClassicSimilarity], result of:
          0.041340183 = score(doc=3842,freq=2.0), product of:
            0.17808245 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050854117 = queryNorm
            0.23214069 = fieldWeight in 3842, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=3842)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 27. 8.2011 14:22:42

Search (6 results, page 1 of 1)

Authors

Years

Types

Themes