Document (#2309)

Author
Morris, L.R.
Title
¬The frequency of use of Library of Congress Classification numbers and Dewey Decimal Classification numbers in the MARC file in the field of library science
Source
Technical services quarterly. 8(1991) no.1, S.37-49
Year
1991
Abstract
The LCC and DDC systems were devised and updated by librarians who had and have no access to the eventual frequency of use of each number in those classification systems. 80% of the monographs in a MARC file of over 1.000.000 records are classified into 20% of the classification numbers in the field of library science and only 20% of the mongraphs are classified into 80% of the classification numbers in the field of library science. Classification of monographs coulld be made easier and performed more accurately if many of the little used and unused numbers were eliminated and many of the most crowded numbers were expanded. A number of examples are included
Theme
Indexierungsstudien
Object
DDC
LCC

Similar documents (author)

  1. Morris, S.: Metadata and rights (2000) 4.98
    4.9757953 = sum of:
      4.9757953 = weight(author_txt:morris in 2628) [ClassicSimilarity], result of:
        4.9757953 = fieldWeight in 2628, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.9612727 = idf(docFreq=40, maxDocs=43254)
          0.625 = fieldNorm(doc=2628)
    
  2. Morris, K.: Software reviews: RediReference Plus (1990) 4.98
    4.9757953 = sum of:
      4.9757953 = weight(author_txt:morris in 3226) [ClassicSimilarity], result of:
        4.9757953 = fieldWeight in 3226, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.9612727 = idf(docFreq=40, maxDocs=43254)
          0.625 = fieldNorm(doc=3226)
    
  3. Morris, L.R.: Choosing a bibliographic utility (1989) 4.98
    4.9757953 = sum of:
      4.9757953 = weight(author_txt:morris in 3727) [ClassicSimilarity], result of:
        4.9757953 = fieldWeight in 3727, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.9612727 = idf(docFreq=40, maxDocs=43254)
          0.625 = fieldNorm(doc=3727)
    
  4. Morris, S.A.: Mapping research specialties (2008) 4.98
    4.9757953 = sum of:
      4.9757953 = weight(author_txt:morris in 3962) [ClassicSimilarity], result of:
        4.9757953 = fieldWeight in 3962, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.9612727 = idf(docFreq=40, maxDocs=43254)
          0.625 = fieldNorm(doc=3962)
    
  5. Morris, A.: Expert systems teaching : the needs of information professionals (1992) 4.98
    4.9757953 = sum of:
      4.9757953 = weight(author_txt:morris in 4658) [ClassicSimilarity], result of:
        4.9757953 = fieldWeight in 4658, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.9612727 = idf(docFreq=40, maxDocs=43254)
          0.625 = fieldNorm(doc=4658)
    

Similar documents (content)

  1. Chan, L.M.: Library of Congress Classification : alternative provisions (1995) 0.29
    0.29484782 = sum of:
      0.29484782 = product of:
        1.0530279 = sum of:
          0.0479138 = weight(abstract_txt:decimal in 542) [ClassicSimilarity], result of:
            0.0479138 = score(doc=542,freq=1.0), product of:
              0.100930534 = queryWeight, product of:
                6.076423 = idf(docFreq=269, maxDocs=43254)
                0.016610188 = queryNorm
              0.47472057 = fieldWeight in 542, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.076423 = idf(docFreq=269, maxDocs=43254)
                0.078125 = fieldNorm(doc=542)
          0.016989307 = weight(abstract_txt:systems in 542) [ClassicSimilarity], result of:
            0.016989307 = score(doc=542,freq=1.0), product of:
              0.063705355 = queryWeight, product of:
                1.1235482 = boost
                3.4135768 = idf(docFreq=3870, maxDocs=43254)
                0.016610188 = queryNorm
              0.2666857 = fieldWeight in 542, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4135768 = idf(docFreq=3870, maxDocs=43254)
                0.078125 = fieldNorm(doc=542)
          0.04134436 = weight(abstract_txt:many in 542) [ClassicSimilarity], result of:
            0.04134436 = score(doc=542,freq=2.0), product of:
              0.09148004 = queryWeight, product of:
                1.3463776 = boost
                4.09058 = idf(docFreq=1966, maxDocs=43254)
                0.016610188 = queryNorm
              0.4519495 = fieldWeight in 542, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.09058 = idf(docFreq=1966, maxDocs=43254)
                0.078125 = fieldNorm(doc=542)
          0.10021296 = weight(abstract_txt:marc in 542) [ClassicSimilarity], result of:
            0.10021296 = score(doc=542,freq=2.0), product of:
              0.16506872 = queryWeight, product of:
                1.8085732 = boost
                5.494828 = idf(docFreq=482, maxDocs=43254)
                0.016610188 = queryNorm
              0.60709846 = fieldWeight in 542, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.494828 = idf(docFreq=482, maxDocs=43254)
                0.078125 = fieldNorm(doc=542)
          0.04781443 = weight(abstract_txt:library in 542) [ClassicSimilarity], result of:
            0.04781443 = score(doc=542,freq=3.0), product of:
              0.11093478 = queryWeight, product of:
                2.0967786 = boost
                3.1852286 = idf(docFreq=4863, maxDocs=43254)
                0.016610188 = queryNorm
              0.43101388 = fieldWeight in 542, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.1852286 = idf(docFreq=4863, maxDocs=43254)
                0.078125 = fieldNorm(doc=542)
          0.2166283 = weight(abstract_txt:classification in 542) [ClassicSimilarity], result of:
            0.2166283 = score(doc=542,freq=7.0), product of:
              0.2621461 = queryWeight, product of:
                3.9476264 = boost
                3.9979079 = idf(docFreq=2157, maxDocs=43254)
                0.016610188 = queryNorm
              0.8263648 = fieldWeight in 542, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                3.9979079 = idf(docFreq=2157, maxDocs=43254)
                0.078125 = fieldNorm(doc=542)
          0.58212465 = weight(abstract_txt:numbers in 542) [ClassicSimilarity], result of:
            0.58212465 = score(doc=542,freq=5.0), product of:
              0.5668305 = queryWeight, product of:
                5.804849 = boost
                5.878787 = idf(docFreq=328, maxDocs=43254)
                0.016610188 = queryNorm
              1.0269818 = fieldWeight in 542, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.878787 = idf(docFreq=328, maxDocs=43254)
                0.078125 = fieldNorm(doc=542)
        0.28 = coord(7/25)
    
  2. Broadbent, E.: ¬The online catalog : dictionary, classified, or both? (1989) 0.28
    0.28356212 = sum of:
      0.28356212 = product of:
        0.88613164 = sum of:
          0.021890473 = weight(abstract_txt:into in 1583) [ClassicSimilarity], result of:
            0.021890473 = score(doc=1583,freq=1.0), product of:
              0.07543315 = queryWeight, product of:
                1.2226013 = boost
                3.7145214 = idf(docFreq=2864, maxDocs=43254)
                0.016610188 = queryNorm
              0.29019699 = fieldWeight in 1583, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7145214 = idf(docFreq=2864, maxDocs=43254)
                0.078125 = fieldNorm(doc=1583)
          0.029995719 = weight(abstract_txt:number in 1583) [ClassicSimilarity], result of:
            0.029995719 = score(doc=1583,freq=1.0), product of:
              0.09306042 = queryWeight, product of:
                1.3579576 = boost
                4.1257625 = idf(docFreq=1898, maxDocs=43254)
                0.016610188 = queryNorm
              0.3223252 = fieldWeight in 1583, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1257625 = idf(docFreq=1898, maxDocs=43254)
                0.078125 = fieldNorm(doc=1583)
          0.070861265 = weight(abstract_txt:marc in 1583) [ClassicSimilarity], result of:
            0.070861265 = score(doc=1583,freq=1.0), product of:
              0.16506872 = queryWeight, product of:
                1.8085732 = boost
                5.494828 = idf(docFreq=482, maxDocs=43254)
                0.016610188 = queryNorm
              0.42928344 = fieldWeight in 1583, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.494828 = idf(docFreq=482, maxDocs=43254)
                0.078125 = fieldNorm(doc=1583)
          0.03200462 = weight(abstract_txt:were in 1583) [ClassicSimilarity], result of:
            0.03200462 = score(doc=1583,freq=1.0), product of:
              0.11123233 = queryWeight, product of:
                1.8182971 = boost
                3.6829145 = idf(docFreq=2956, maxDocs=43254)
                0.016610188 = queryNorm
              0.28772768 = fieldWeight in 1583, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6829145 = idf(docFreq=2956, maxDocs=43254)
                0.078125 = fieldNorm(doc=1583)
          0.1937895 = weight(abstract_txt:classified in 1583) [ClassicSimilarity], result of:
            0.1937895 = score(doc=1583,freq=4.0), product of:
              0.20335694 = queryWeight, product of:
                2.0073967 = boost
                6.098896 = idf(docFreq=263, maxDocs=43254)
                0.016610188 = queryNorm
              0.9529525 = fieldWeight in 1583, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.098896 = idf(docFreq=263, maxDocs=43254)
                0.078125 = fieldNorm(doc=1583)
          0.027605673 = weight(abstract_txt:library in 1583) [ClassicSimilarity], result of:
            0.027605673 = score(doc=1583,freq=1.0), product of:
              0.11093478 = queryWeight, product of:
                2.0967786 = boost
                3.1852286 = idf(docFreq=4863, maxDocs=43254)
                0.016610188 = queryNorm
              0.24884598 = fieldWeight in 1583, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1852286 = idf(docFreq=4863, maxDocs=43254)
                0.078125 = fieldNorm(doc=1583)
          0.14181651 = weight(abstract_txt:classification in 1583) [ClassicSimilarity], result of:
            0.14181651 = score(doc=1583,freq=3.0), product of:
              0.2621461 = queryWeight, product of:
                3.9476264 = boost
                3.9979079 = idf(docFreq=2157, maxDocs=43254)
                0.016610188 = queryNorm
              0.5409828 = fieldWeight in 1583, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.9979079 = idf(docFreq=2157, maxDocs=43254)
                0.078125 = fieldNorm(doc=1583)
          0.3681679 = weight(abstract_txt:numbers in 1583) [ClassicSimilarity], result of:
            0.3681679 = score(doc=1583,freq=2.0), product of:
              0.5668305 = queryWeight, product of:
                5.804849 = boost
                5.878787 = idf(docFreq=328, maxDocs=43254)
                0.016610188 = queryNorm
              0.6495203 = fieldWeight in 1583, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.878787 = idf(docFreq=328, maxDocs=43254)
                0.078125 = fieldNorm(doc=1583)
        0.32 = coord(8/25)
    
  3. Beall, J.: Representation DDC system in MARC 21 (2008) 0.28
    0.27523336 = sum of:
      0.27523336 = product of:
        1.1468056 = sum of:
          0.06776035 = weight(abstract_txt:decimal in 4168) [ClassicSimilarity], result of:
            0.06776035 = score(doc=4168,freq=2.0), product of:
              0.100930534 = queryWeight, product of:
                6.076423 = idf(docFreq=269, maxDocs=43254)
                0.016610188 = queryNorm
              0.67135626 = fieldWeight in 4168, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.076423 = idf(docFreq=269, maxDocs=43254)
                0.078125 = fieldNorm(doc=4168)
          0.04242035 = weight(abstract_txt:number in 4168) [ClassicSimilarity], result of:
            0.04242035 = score(doc=4168,freq=2.0), product of:
              0.09306042 = queryWeight, product of:
                1.3579576 = boost
                4.1257625 = idf(docFreq=1898, maxDocs=43254)
                0.016610188 = queryNorm
              0.45583665 = fieldWeight in 4168, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1257625 = idf(docFreq=1898, maxDocs=43254)
                0.078125 = fieldNorm(doc=4168)
          0.12273532 = weight(abstract_txt:marc in 4168) [ClassicSimilarity], result of:
            0.12273532 = score(doc=4168,freq=3.0), product of:
              0.16506872 = queryWeight, product of:
                1.8085732 = boost
                5.494828 = idf(docFreq=482, maxDocs=43254)
                0.016610188 = queryNorm
              0.74354076 = fieldWeight in 4168, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.494828 = idf(docFreq=482, maxDocs=43254)
                0.078125 = fieldNorm(doc=4168)
          0.08329391 = weight(abstract_txt:field in 4168) [ClassicSimilarity], result of:
            0.08329391 = score(doc=4168,freq=2.0), product of:
              0.16704035 = queryWeight, product of:
                2.22823 = boost
                4.513223 = idf(docFreq=1288, maxDocs=43254)
                0.016610188 = queryNorm
              0.49864542 = fieldWeight in 4168, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.513223 = idf(docFreq=1288, maxDocs=43254)
                0.078125 = fieldNorm(doc=4168)
          0.14181651 = weight(abstract_txt:classification in 4168) [ClassicSimilarity], result of:
            0.14181651 = score(doc=4168,freq=3.0), product of:
              0.2621461 = queryWeight, product of:
                3.9476264 = boost
                3.9979079 = idf(docFreq=2157, maxDocs=43254)
                0.016610188 = queryNorm
              0.5409828 = fieldWeight in 4168, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.9979079 = idf(docFreq=2157, maxDocs=43254)
                0.078125 = fieldNorm(doc=4168)
          0.6887792 = weight(abstract_txt:numbers in 4168) [ClassicSimilarity], result of:
            0.6887792 = score(doc=4168,freq=7.0), product of:
              0.5668305 = queryWeight, product of:
                5.804849 = boost
                5.878787 = idf(docFreq=328, maxDocs=43254)
                0.016610188 = queryNorm
              1.2151413 = fieldWeight in 4168, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                5.878787 = idf(docFreq=328, maxDocs=43254)
                0.078125 = fieldNorm(doc=4168)
        0.24 = coord(6/25)
    
  4. Liu, S.: Decomposing DDC synthesized numbers (1997) 0.23
    0.22797833 = sum of:
      0.22797833 = product of:
        0.94990975 = sum of:
          0.016989307 = weight(abstract_txt:systems in 969) [ClassicSimilarity], result of:
            0.016989307 = score(doc=969,freq=1.0), product of:
              0.063705355 = queryWeight, product of:
                1.1235482 = boost
                3.4135768 = idf(docFreq=3870, maxDocs=43254)
                0.016610188 = queryNorm
              0.2666857 = fieldWeight in 969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4135768 = idf(docFreq=3870, maxDocs=43254)
                0.078125 = fieldNorm(doc=969)
          0.07816126 = weight(abstract_txt:accurately in 969) [ClassicSimilarity], result of:
            0.07816126 = score(doc=969,freq=1.0), product of:
              0.13986526 = queryWeight, product of:
                1.1771821 = boost
                7.1530566 = idf(docFreq=91, maxDocs=43254)
                0.016610188 = queryNorm
              0.5588325 = fieldWeight in 969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.1530566 = idf(docFreq=91, maxDocs=43254)
                0.078125 = fieldNorm(doc=969)
          0.029995719 = weight(abstract_txt:number in 969) [ClassicSimilarity], result of:
            0.029995719 = score(doc=969,freq=1.0), product of:
              0.09306042 = queryWeight, product of:
                1.3579576 = boost
                4.1257625 = idf(docFreq=1898, maxDocs=43254)
                0.016610188 = queryNorm
              0.3223252 = fieldWeight in 969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1257625 = idf(docFreq=1898, maxDocs=43254)
                0.078125 = fieldNorm(doc=969)
          0.04526137 = weight(abstract_txt:were in 969) [ClassicSimilarity], result of:
            0.04526137 = score(doc=969,freq=2.0), product of:
              0.11123233 = queryWeight, product of:
                1.8182971 = boost
                3.6829145 = idf(docFreq=2956, maxDocs=43254)
                0.016610188 = queryNorm
              0.4069084 = fieldWeight in 969, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6829145 = idf(docFreq=2956, maxDocs=43254)
                0.078125 = fieldNorm(doc=969)
          0.14181651 = weight(abstract_txt:classification in 969) [ClassicSimilarity], result of:
            0.14181651 = score(doc=969,freq=3.0), product of:
              0.2621461 = queryWeight, product of:
                3.9476264 = boost
                3.9979079 = idf(docFreq=2157, maxDocs=43254)
                0.016610188 = queryNorm
              0.5409828 = fieldWeight in 969, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.9979079 = idf(docFreq=2157, maxDocs=43254)
                0.078125 = fieldNorm(doc=969)
          0.6376856 = weight(abstract_txt:numbers in 969) [ClassicSimilarity], result of:
            0.6376856 = score(doc=969,freq=6.0), product of:
              0.5668305 = queryWeight, product of:
                5.804849 = boost
                5.878787 = idf(docFreq=328, maxDocs=43254)
                0.016610188 = queryNorm
              1.1250023 = fieldWeight in 969, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                5.878787 = idf(docFreq=328, maxDocs=43254)
                0.078125 = fieldNorm(doc=969)
        0.24 = coord(6/25)
    
  5. Liu, S.: Decomposing DDC synthesized numbers (1996) 0.22
    0.2170383 = sum of:
      0.2170383 = product of:
        0.77513677 = sum of:
          0.011892515 = weight(abstract_txt:systems in 970) [ClassicSimilarity], result of:
            0.011892515 = score(doc=970,freq=1.0), product of:
              0.063705355 = queryWeight, product of:
                1.1235482 = boost
                3.4135768 = idf(docFreq=3870, maxDocs=43254)
                0.016610188 = queryNorm
              0.18667999 = fieldWeight in 970, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4135768 = idf(docFreq=3870, maxDocs=43254)
                0.0546875 = fieldNorm(doc=970)
          0.054712884 = weight(abstract_txt:accurately in 970) [ClassicSimilarity], result of:
            0.054712884 = score(doc=970,freq=1.0), product of:
              0.13986526 = queryWeight, product of:
                1.1771821 = boost
                7.1530566 = idf(docFreq=91, maxDocs=43254)
                0.016610188 = queryNorm
              0.39118278 = fieldWeight in 970, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.1530566 = idf(docFreq=91, maxDocs=43254)
                0.0546875 = fieldNorm(doc=970)
          0.029694244 = weight(abstract_txt:number in 970) [ClassicSimilarity], result of:
            0.029694244 = score(doc=970,freq=2.0), product of:
              0.09306042 = queryWeight, product of:
                1.3579576 = boost
                4.1257625 = idf(docFreq=1898, maxDocs=43254)
                0.016610188 = queryNorm
              0.31908566 = fieldWeight in 970, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1257625 = idf(docFreq=1898, maxDocs=43254)
                0.0546875 = fieldNorm(doc=970)
          0.044806473 = weight(abstract_txt:were in 970) [ClassicSimilarity], result of:
            0.044806473 = score(doc=970,freq=4.0), product of:
              0.11123233 = queryWeight, product of:
                1.8182971 = boost
                3.6829145 = idf(docFreq=2956, maxDocs=43254)
                0.016610188 = queryNorm
              0.40281877 = fieldWeight in 970, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6829145 = idf(docFreq=2956, maxDocs=43254)
                0.0546875 = fieldNorm(doc=970)
          0.019323973 = weight(abstract_txt:library in 970) [ClassicSimilarity], result of:
            0.019323973 = score(doc=970,freq=1.0), product of:
              0.11093478 = queryWeight, product of:
                2.0967786 = boost
                3.1852286 = idf(docFreq=4863, maxDocs=43254)
                0.016610188 = queryNorm
              0.17419219 = fieldWeight in 970, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1852286 = idf(docFreq=4863, maxDocs=43254)
                0.0546875 = fieldNorm(doc=970)
          0.099271566 = weight(abstract_txt:classification in 970) [ClassicSimilarity], result of:
            0.099271566 = score(doc=970,freq=3.0), product of:
              0.2621461 = queryWeight, product of:
                3.9476264 = boost
                3.9979079 = idf(docFreq=2157, maxDocs=43254)
                0.016610188 = queryNorm
              0.37868795 = fieldWeight in 970, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.9979079 = idf(docFreq=2157, maxDocs=43254)
                0.0546875 = fieldNorm(doc=970)
          0.5154351 = weight(abstract_txt:numbers in 970) [ClassicSimilarity], result of:
            0.5154351 = score(doc=970,freq=8.0), product of:
              0.5668305 = queryWeight, product of:
                5.804849 = boost
                5.878787 = idf(docFreq=328, maxDocs=43254)
                0.016610188 = queryNorm
              0.90932846 = fieldWeight in 970, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                5.878787 = idf(docFreq=328, maxDocs=43254)
                0.0546875 = fieldNorm(doc=970)
        0.28 = coord(7/25)