Document (#25404)

Author

Watanabe, T.

Title

¬An experimental OPAC system using NDC8 to improve subject access

Source

Toshokan-Kai. 46(1994) no.4, S.164-176

Year

1994

Abstract

Description of an attempt to improve OPAC subject access at Kobe University Library using Nippon Decimal Classification, 8th ed. (NDC8). Examines the theoretical aspects of using a classification for subject searching, then explains the Kobe system. Using the NDC8 machine-readable data file, a database was created for the OPAC, incorporating class numbers and subject headings. Difficulties arise from subdivisions and the structure of NDC8 itself, but it is an important area for development

Footnote

[Japanisch]

Theme

Klassifikationssysteme im Online-Retrieval
OPAC

Object

NDC-8

Location

Japan

Similar documents (content)

1. Drabenstott, K.M.: Period subdivisions in the Library of Congress Subject Headings system : some thoughts and recommendations for the future (1992) 0.25

   0.2506258 = sum of:
     0.2506258 = product of:
       0.7832056 = sum of:
         0.054042824 = weight(abstract_txt:headings in 543) [ClassicSimilarity], result of:
           0.054042824 = score(doc=543,freq=2.0), product of:
             0.11868782 = queryWeight, product of:
               1.0246944 = boost
               5.1515374 = idf(docFreq=695, maxDocs=44218)
               0.02248407 = queryNorm
             0.4553359 = fieldWeight in 543, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.1515374 = idf(docFreq=695, maxDocs=44218)
               0.0625 = fieldNorm(doc=543)
         0.058138605 = weight(abstract_txt:machine in 543) [ClassicSimilarity], result of:
           0.058138605 = score(doc=543,freq=2.0), product of:
             0.124611236 = queryWeight, product of:
               1.0499531 = boost
               5.2785225 = idf(docFreq=612, maxDocs=44218)
               0.02248407 = queryNorm
             0.4665599 = fieldWeight in 543, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.2785225 = idf(docFreq=612, maxDocs=44218)
               0.0625 = fieldNorm(doc=543)
         0.084060736 = weight(abstract_txt:file in 543) [ClassicSimilarity], result of:
           0.084060736 = score(doc=543,freq=3.0), product of:
             0.13919143 = queryWeight, product of:
               1.1096795 = boost
               5.57879 = idf(docFreq=453, maxDocs=44218)
               0.02248407 = queryNorm
             0.6039218 = fieldWeight in 543, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.57879 = idf(docFreq=453, maxDocs=44218)
               0.0625 = fieldNorm(doc=543)
         0.10711983 = weight(abstract_txt:readable in 543) [ClassicSimilarity], result of:
           0.10711983 = score(doc=543,freq=2.0), product of:
             0.18728115 = queryWeight, product of:
               1.2871772 = boost
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.02248407 = queryNorm
             0.5719734 = fieldWeight in 543, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.0625 = fieldNorm(doc=543)
         0.021439979 = weight(abstract_txt:system in 543) [ClassicSimilarity], result of:
           0.021439979 = score(doc=543,freq=1.0), product of:
             0.1017225 = queryWeight, product of:
               1.3415745 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.02248407 = queryNorm
             0.21076928 = fieldWeight in 543, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0625 = fieldNorm(doc=543)
         0.26286006 = weight(abstract_txt:subdivisions in 543) [ClassicSimilarity], result of:
           0.26286006 = score(doc=543,freq=5.0), product of:
             0.2510444 = queryWeight, product of:
               1.4902755 = boost
               7.4921947 = idf(docFreq=66, maxDocs=44218)
               0.02248407 = queryNorm
             1.0470661 = fieldWeight in 543, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               7.4921947 = idf(docFreq=66, maxDocs=44218)
               0.0625 = fieldNorm(doc=543)
         0.04643811 = weight(abstract_txt:using in 543) [ClassicSimilarity], result of:
           0.04643811 = score(doc=543,freq=1.0), product of:
             0.21454932 = queryWeight, product of:
               2.7554014 = boost
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.02248407 = queryNorm
             0.21644491 = fieldWeight in 543, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.0625 = fieldNorm(doc=543)
         0.14910558 = weight(abstract_txt:subject in 543) [ClassicSimilarity], result of:
           0.14910558 = score(doc=543,freq=5.0), product of:
             0.2730759 = queryWeight, product of:
               3.1085868 = boost
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.02248407 = queryNorm
             0.5460225 = fieldWeight in 543, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.0625 = fieldNorm(doc=543)
       0.32 = coord(8/25)
   

2. Holley, R.P.; Killheffer, R.E.: Is there an answer to the subject access crisis? (1981) 0.25

   0.24910499 = sum of:
     0.24910499 = product of:
       0.7784531 = sum of:
         0.067553535 = weight(abstract_txt:headings in 5531) [ClassicSimilarity], result of:
           0.067553535 = score(doc=5531,freq=2.0), product of:
             0.11868782 = queryWeight, product of:
               1.0246944 = boost
               5.1515374 = idf(docFreq=695, maxDocs=44218)
               0.02248407 = queryNorm
             0.5691699 = fieldWeight in 5531, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.1515374 = idf(docFreq=695, maxDocs=44218)
               0.078125 = fieldNorm(doc=5531)
         0.05138775 = weight(abstract_txt:machine in 5531) [ClassicSimilarity], result of:
           0.05138775 = score(doc=5531,freq=1.0), product of:
             0.124611236 = queryWeight, product of:
               1.0499531 = boost
               5.2785225 = idf(docFreq=612, maxDocs=44218)
               0.02248407 = queryNorm
             0.41238457 = fieldWeight in 5531, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2785225 = idf(docFreq=612, maxDocs=44218)
               0.078125 = fieldNorm(doc=5531)
         0.085794136 = weight(abstract_txt:file in 5531) [ClassicSimilarity], result of:
           0.085794136 = score(doc=5531,freq=2.0), product of:
             0.13919143 = queryWeight, product of:
               1.1096795 = boost
               5.57879 = idf(docFreq=453, maxDocs=44218)
               0.02248407 = queryNorm
             0.6163751 = fieldWeight in 5531, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.57879 = idf(docFreq=453, maxDocs=44218)
               0.078125 = fieldNorm(doc=5531)
         0.09468145 = weight(abstract_txt:readable in 5531) [ClassicSimilarity], result of:
           0.09468145 = score(doc=5531,freq=1.0), product of:
             0.18728115 = queryWeight, product of:
               1.2871772 = boost
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.02248407 = queryNorm
             0.50555784 = fieldWeight in 5531, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.078125 = fieldNorm(doc=5531)
         0.04809449 = weight(abstract_txt:access in 5531) [ClassicSimilarity], result of:
           0.04809449 = score(doc=5531,freq=2.0), product of:
             0.11922875 = queryWeight, product of:
               1.4524353 = boost
               3.6509786 = idf(docFreq=3120, maxDocs=44218)
               0.02248407 = queryNorm
             0.40337995 = fieldWeight in 5531, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6509786 = idf(docFreq=3120, maxDocs=44218)
               0.078125 = fieldNorm(doc=5531)
         0.08526614 = weight(abstract_txt:improve in 5531) [ClassicSimilarity], result of:
           0.08526614 = score(doc=5531,freq=1.0), product of:
             0.22004518 = queryWeight, product of:
               1.9731596 = boost
               4.9599204 = idf(docFreq=842, maxDocs=44218)
               0.02248407 = queryNorm
             0.3874938 = fieldWeight in 5531, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9599204 = idf(docFreq=842, maxDocs=44218)
               0.078125 = fieldNorm(doc=5531)
         0.08209175 = weight(abstract_txt:using in 5531) [ClassicSimilarity], result of:
           0.08209175 = score(doc=5531,freq=2.0), product of:
             0.21454932 = queryWeight, product of:
               2.7554014 = boost
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.02248407 = queryNorm
             0.38262415 = fieldWeight in 5531, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.078125 = fieldNorm(doc=5531)
         0.26358393 = weight(abstract_txt:subject in 5531) [ClassicSimilarity], result of:
           0.26358393 = score(doc=5531,freq=10.0), product of:
             0.2730759 = queryWeight, product of:
               3.1085868 = boost
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.02248407 = queryNorm
             0.9652405 = fieldWeight in 5531, product of:
               3.1622777 = tf(freq=10.0), with freq of:
                 10.0 = termFreq=10.0
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.078125 = fieldNorm(doc=5531)
       0.32 = coord(8/25)
   

3. Larson, R.R.: Evaluation of advanced retrieval techniques in an experimental online catalog (1992) 0.20

   0.20032685 = sum of:
     0.20032685 = product of:
       0.6260214 = sum of:
         0.054954857 = weight(abstract_txt:experimental in 481) [ClassicSimilarity], result of:
           0.054954857 = score(doc=481,freq=1.0), product of:
             0.13031313 = queryWeight, product of:
               1.073706 = boost
               5.397938 = idf(docFreq=543, maxDocs=44218)
               0.02248407 = queryNorm
             0.4217139 = fieldWeight in 481, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.397938 = idf(docFreq=543, maxDocs=44218)
               0.078125 = fieldNorm(doc=481)
         0.0759736 = weight(abstract_txt:difficulties in 481) [ClassicSimilarity], result of:
           0.0759736 = score(doc=481,freq=1.0), product of:
             0.16171834 = queryWeight, product of:
               1.1961094 = boost
               6.0133076 = idf(docFreq=293, maxDocs=44218)
               0.02248407 = queryNorm
             0.46978965 = fieldWeight in 481, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.0133076 = idf(docFreq=293, maxDocs=44218)
               0.078125 = fieldNorm(doc=481)
         0.026799971 = weight(abstract_txt:system in 481) [ClassicSimilarity], result of:
           0.026799971 = score(doc=481,freq=1.0), product of:
             0.1017225 = queryWeight, product of:
               1.3415745 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.02248407 = queryNorm
             0.2634616 = fieldWeight in 481, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.078125 = fieldNorm(doc=481)
         0.110179625 = weight(abstract_txt:incorporating in 481) [ClassicSimilarity], result of:
           0.110179625 = score(doc=481,freq=1.0), product of:
             0.20719771 = queryWeight, product of:
               1.3538913 = boost
               6.806538 = idf(docFreq=132, maxDocs=44218)
               0.02248407 = queryNorm
             0.5317608 = fieldWeight in 481, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.806538 = idf(docFreq=132, maxDocs=44218)
               0.078125 = fieldNorm(doc=481)
         0.04809449 = weight(abstract_txt:access in 481) [ClassicSimilarity], result of:
           0.04809449 = score(doc=481,freq=2.0), product of:
             0.11922875 = queryWeight, product of:
               1.4524353 = boost
               3.6509786 = idf(docFreq=3120, maxDocs=44218)
               0.02248407 = queryNorm
             0.40337995 = fieldWeight in 481, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6509786 = idf(docFreq=3120, maxDocs=44218)
               0.078125 = fieldNorm(doc=481)
         0.08526614 = weight(abstract_txt:improve in 481) [ClassicSimilarity], result of:
           0.08526614 = score(doc=481,freq=1.0), product of:
             0.22004518 = queryWeight, product of:
               1.9731596 = boost
               4.9599204 = idf(docFreq=842, maxDocs=44218)
               0.02248407 = queryNorm
             0.3874938 = fieldWeight in 481, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9599204 = idf(docFreq=842, maxDocs=44218)
               0.078125 = fieldNorm(doc=481)
         0.058047637 = weight(abstract_txt:using in 481) [ClassicSimilarity], result of:
           0.058047637 = score(doc=481,freq=1.0), product of:
             0.21454932 = queryWeight, product of:
               2.7554014 = boost
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.02248407 = queryNorm
             0.27055615 = fieldWeight in 481, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.078125 = fieldNorm(doc=481)
         0.1667051 = weight(abstract_txt:subject in 481) [ClassicSimilarity], result of:
           0.1667051 = score(doc=481,freq=4.0), product of:
             0.2730759 = queryWeight, product of:
               3.1085868 = boost
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.02248407 = queryNorm
             0.61047167 = fieldWeight in 481, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.078125 = fieldNorm(doc=481)
       0.32 = coord(8/25)
   

4. Devadason, F.J.; Intaraksa, N.; Patamawongjariya, P.; Desai, K.: Faceted indexing application for organizing and accessing internet resources (2003) 0.20

   0.19957086 = sum of:
     0.19957086 = product of:
       0.5543635 = sum of:
         0.026637973 = weight(abstract_txt:area in 3966) [ClassicSimilarity], result of:
           0.026637973 = score(doc=3966,freq=1.0), product of:
             0.11303616 = queryWeight, product of:
               5.027389 = idf(docFreq=787, maxDocs=44218)
               0.02248407 = queryNorm
             0.23565885 = fieldWeight in 3966, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.027389 = idf(docFreq=787, maxDocs=44218)
               0.046875 = fieldNorm(doc=3966)
         0.07582865 = weight(abstract_txt:headings in 3966) [ClassicSimilarity], result of:
           0.07582865 = score(doc=3966,freq=7.0), product of:
             0.11868782 = queryWeight, product of:
               1.0246944 = boost
               5.1515374 = idf(docFreq=695, maxDocs=44218)
               0.02248407 = queryNorm
             0.6388916 = fieldWeight in 3966, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.1515374 = idf(docFreq=695, maxDocs=44218)
               0.046875 = fieldNorm(doc=3966)
         0.032972913 = weight(abstract_txt:experimental in 3966) [ClassicSimilarity], result of:
           0.032972913 = score(doc=3966,freq=1.0), product of:
             0.13031313 = queryWeight, product of:
               1.073706 = boost
               5.397938 = idf(docFreq=543, maxDocs=44218)
               0.02248407 = queryNorm
             0.25302833 = fieldWeight in 3966, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.397938 = idf(docFreq=543, maxDocs=44218)
               0.046875 = fieldNorm(doc=3966)
         0.04678549 = weight(abstract_txt:decimal in 3966) [ClassicSimilarity], result of:
           0.04678549 = score(doc=3966,freq=1.0), product of:
             0.1645473 = queryWeight, product of:
               1.2065259 = boost
               6.0656753 = idf(docFreq=278, maxDocs=44218)
               0.02248407 = queryNorm
             0.28432852 = fieldWeight in 3966, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.0656753 = idf(docFreq=278, maxDocs=44218)
               0.046875 = fieldNorm(doc=3966)
         0.053331275 = weight(abstract_txt:system in 3966) [ClassicSimilarity], result of:
           0.053331275 = score(doc=3966,freq=11.0), product of:
             0.1017225 = queryWeight, product of:
               1.3415745 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.02248407 = queryNorm
             0.524282 = fieldWeight in 3966, product of:
               3.3166249 = tf(freq=11.0), with freq of:
                 11.0 = termFreq=11.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.046875 = fieldNorm(doc=3966)
         0.028856693 = weight(abstract_txt:access in 3966) [ClassicSimilarity], result of:
           0.028856693 = score(doc=3966,freq=2.0), product of:
             0.11922875 = queryWeight, product of:
               1.4524353 = boost
               3.6509786 = idf(docFreq=3120, maxDocs=44218)
               0.02248407 = queryNorm
             0.24202797 = fieldWeight in 3966, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6509786 = idf(docFreq=3120, maxDocs=44218)
               0.046875 = fieldNorm(doc=3966)
         0.046201967 = weight(abstract_txt:classification in 3966) [ClassicSimilarity], result of:
           0.046201967 = score(doc=3966,freq=3.0), product of:
             0.14254758 = queryWeight, product of:
               1.5881306 = boost
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.02248407 = queryNorm
             0.3241161 = fieldWeight in 3966, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.046875 = fieldNorm(doc=3966)
         0.07787908 = weight(abstract_txt:using in 3966) [ClassicSimilarity], result of:
           0.07787908 = score(doc=3966,freq=5.0), product of:
             0.21454932 = queryWeight, product of:
               2.7554014 = boost
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.02248407 = queryNorm
             0.36298916 = fieldWeight in 3966, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.046875 = fieldNorm(doc=3966)
         0.1658695 = weight(abstract_txt:subject in 3966) [ClassicSimilarity], result of:
           0.1658695 = score(doc=3966,freq=11.0), product of:
             0.2730759 = queryWeight, product of:
               3.1085868 = boost
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.02248407 = queryNorm
             0.6074117 = fieldWeight in 3966, product of:
               3.3166249 = tf(freq=11.0), with freq of:
                 11.0 = termFreq=11.0
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.046875 = fieldNorm(doc=3966)
       0.36 = coord(9/25)
   

5. Klein, R.D.: ¬The problem of cataloguing world literature using the Nippon Decimal Classification (1994) 0.20

   0.1966905 = sum of:
     0.1966905 = product of:
       1.2293156 = sum of:
         0.109166145 = weight(abstract_txt:decimal in 867) [ClassicSimilarity], result of:
           0.109166145 = score(doc=867,freq=1.0), product of:
             0.1645473 = queryWeight, product of:
               1.2065259 = boost
               6.0656753 = idf(docFreq=278, maxDocs=44218)
               0.02248407 = queryNorm
             0.66343325 = fieldWeight in 867, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.0656753 = idf(docFreq=278, maxDocs=44218)
               0.109375 = fieldNorm(doc=867)
         0.03751996 = weight(abstract_txt:system in 867) [ClassicSimilarity], result of:
           0.03751996 = score(doc=867,freq=1.0), product of:
             0.1017225 = queryWeight, product of:
               1.3415745 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.02248407 = queryNorm
             0.36884624 = fieldWeight in 867, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.109375 = fieldNorm(doc=867)
         0.088022076 = weight(abstract_txt:classification in 867) [ClassicSimilarity], result of:
           0.088022076 = score(doc=867,freq=2.0), product of:
             0.14254758 = queryWeight, product of:
               1.5881306 = boost
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.02248407 = queryNorm
             0.6174926 = fieldWeight in 867, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.109375 = fieldNorm(doc=867)
         0.99460745 = weight(title_txt:nippon in 867) [ClassicSimilarity], result of:
           0.99460745 = score(doc=867,freq=1.0), product of:
             0.413668 = queryWeight, product of:
               1.9130101 = boost
               9.617446 = idf(docFreq=7, maxDocs=44218)
               0.02248407 = queryNorm
             2.4043615 = fieldWeight in 867, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.617446 = idf(docFreq=7, maxDocs=44218)
               0.25 = fieldNorm(doc=867)
       0.16 = coord(4/25)