Document (#40303)

Author
Pfeffer, M.
Title
Using clustering across union catalogues to enrich entries with indexing information
Source
Data analysis, machine learning and knowledge discovery. Eds. Myra Spiliopoulou, Lars Schmidt-Thieme und Ruth Janning
Imprint
Cham : Springer International Publishing
Year
2014
Pages
S.437-445
Series
Studies in classification, data analysis, and knowledge organization
Abstract
The federal system in Germany has created a segmented library landscape. Instead of a central entity responsible for cataloguing and indexing, regional library unions share the workload cooperatively among their members. One result of this approach is limited sharing of cataloguing and indexing information across union catalogues as well as heterogeneous indexing of items with almost equivalent content: different editions of the same work. In this paper, a method for clustering entries in library catalogues is proposed that can be used to reduce this heterogeneity as well as share indexing information across catalogue boundaries. In two experiments, the method is applied to several union catalogues and the results show that a surprisingly large number of previously not indexed entries can be enriched with indexing information. The quality of the indexing has been positively evaluated by human professionals and the results have already been imported into the production catalogues of two library unions.
Content
Vgl.: DOI: 10.1007/978-3-319-01595-8_47.
Theme
Verteilte bibliographische Datenbanken

Similar documents (author)

  1. Pfeffer, J.: Online-Tutorials an deutschen Universitäts- und Hochschulbibliotheken : Verbreitung, Typologie und Analyse am Beispiel von LOTSE, DISCUS und BibTutor (2005) 5.69
    5.6862135 = sum of:
      5.6862135 = weight(author_txt:pfeffer in 838) [ClassicSimilarity], result of:
        5.6862135 = fieldWeight in 838, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.097941 = idf(docFreq=12, maxDocs=42740)
          0.625 = fieldNorm(doc=838)
    
  2. Pfeffer, M.: Automatische Vergabe von RVK-Notationen anhand von bibliografischen Daten mittels fallbasiertem Schließen (2007) 5.69
    5.6862135 = sum of:
      5.6862135 = weight(author_txt:pfeffer in 2559) [ClassicSimilarity], result of:
        5.6862135 = fieldWeight in 2559, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.097941 = idf(docFreq=12, maxDocs=42740)
          0.625 = fieldNorm(doc=2559)
    
  3. Pfeffer, M.: Automatische Vergabe von RVK-Notationen mittels fallbasiertem Schließen (2009) 5.69
    5.6862135 = sum of:
      5.6862135 = weight(author_txt:pfeffer in 52) [ClassicSimilarity], result of:
        5.6862135 = fieldWeight in 52, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.097941 = idf(docFreq=12, maxDocs=42740)
          0.625 = fieldNorm(doc=52)
    
  4. Pfeffer, H.-J.: Gopher und Veronica (1995) 4.55
    4.5489707 = sum of:
      4.5489707 = weight(author_txt:pfeffer in 3268) [ClassicSimilarity], result of:
        4.5489707 = fieldWeight in 3268, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.097941 = idf(docFreq=12, maxDocs=42740)
          0.5 = fieldNorm(doc=3268)
    
  5. Pfeffer, M.; Wiesenmüller, H.: Resource Discovery Systeme (2016) 4.55
    4.5489707 = sum of:
      4.5489707 = weight(author_txt:pfeffer in 6844) [ClassicSimilarity], result of:
        4.5489707 = fieldWeight in 6844, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.097941 = idf(docFreq=12, maxDocs=42740)
          0.5 = fieldNorm(doc=6844)
    

Similar documents (content)

  1. Schuhböck, H.P.: EDV-Katalogisierung und Online-Benutzerkatalog : Möglichkeiten und Probleme neuer Erschließungstechniken in Öffentlichen Bibliotheken (1989) 0.22
    0.22352155 = sum of:
      0.22352155 = product of:
        0.69850487 = sum of:
          0.024185697 = weight(abstract_txt:with in 2586) [ClassicSimilarity], result of:
            0.024185697 = score(doc=2586,freq=4.0), product of:
              0.051235 = queryWeight, product of:
                1.0443571 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.019486202 = queryNorm
              0.47205418 = fieldWeight in 2586, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.09375 = fieldNorm(doc=2586)
          0.030666964 = weight(abstract_txt:well in 2586) [ClassicSimilarity], result of:
            0.030666964 = score(doc=2586,freq=1.0), product of:
              0.08323343 = queryWeight, product of:
                1.0868481 = boost
                3.930083 = idf(docFreq=2281, maxDocs=42740)
                0.019486202 = queryNorm
              0.36844528 = fieldWeight in 2586, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.930083 = idf(docFreq=2281, maxDocs=42740)
                0.09375 = fieldNorm(doc=2586)
          0.07969871 = weight(abstract_txt:cataloguing in 2586) [ClassicSimilarity], result of:
            0.07969871 = score(doc=2586,freq=2.0), product of:
              0.1248748 = queryWeight, product of:
                1.3312432 = boost
                4.813824 = idf(docFreq=942, maxDocs=42740)
                0.019486202 = queryNorm
              0.63822895 = fieldWeight in 2586, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.813824 = idf(docFreq=942, maxDocs=42740)
                0.09375 = fieldNorm(doc=2586)
          0.014500072 = weight(abstract_txt:information in 2586) [ClassicSimilarity], result of:
            0.014500072 = score(doc=2586,freq=1.0), product of:
              0.06364643 = queryWeight, product of:
                1.3440703 = boost
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.019486202 = queryNorm
              0.22782224 = fieldWeight in 2586, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.09375 = fieldNorm(doc=2586)
          0.03258997 = weight(abstract_txt:library in 2586) [ClassicSimilarity], result of:
            0.03258997 = score(doc=2586,freq=1.0), product of:
              0.109206855 = queryWeight, product of:
                1.7605969 = boost
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.019486202 = queryNorm
              0.2984242 = fieldWeight in 2586, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.09375 = fieldNorm(doc=2586)
          0.17553563 = weight(abstract_txt:entries in 2586) [ClassicSimilarity], result of:
            0.17553563 = score(doc=2586,freq=1.0), product of:
              0.30487692 = queryWeight, product of:
                2.5475802 = boost
                6.1414294 = idf(docFreq=249, maxDocs=42740)
                0.019486202 = queryNorm
              0.575759 = fieldWeight in 2586, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1414294 = idf(docFreq=249, maxDocs=42740)
                0.09375 = fieldNorm(doc=2586)
          0.1967449 = weight(abstract_txt:catalogues in 2586) [ClassicSimilarity], result of:
            0.1967449 = score(doc=2586,freq=1.0), product of:
              0.3900314 = queryWeight, product of:
                3.7199728 = boost
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.019486202 = queryNorm
              0.5044335 = fieldWeight in 2586, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.09375 = fieldNorm(doc=2586)
          0.14458293 = weight(abstract_txt:indexing in 2586) [ClassicSimilarity], result of:
            0.14458293 = score(doc=2586,freq=1.0), product of:
              0.3553186 = queryWeight, product of:
                4.2010994 = boost
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.019486202 = queryNorm
              0.40691066 = fieldWeight in 2586, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.09375 = fieldNorm(doc=2586)
        0.32 = coord(8/25)
    
  2. Lunau, C.D.; Turner, F.: vCuc pilot project : status report and preliminary identification (1997) 0.18
    0.18330131 = sum of:
      0.18330131 = product of:
        0.9165065 = sum of:
          0.014732074 = weight(abstract_txt:this in 1134) [ClassicSimilarity], result of:
            0.014732074 = score(doc=1134,freq=1.0), product of:
              0.048242647 = queryWeight, product of:
                1.0134007 = boost
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.019486202 = queryNorm
              0.3053745 = fieldWeight in 1134, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.125 = fieldNorm(doc=1134)
          0.016123798 = weight(abstract_txt:with in 1134) [ClassicSimilarity], result of:
            0.016123798 = score(doc=1134,freq=1.0), product of:
              0.051235 = queryWeight, product of:
                1.0443571 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.019486202 = queryNorm
              0.31470278 = fieldWeight in 1134, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.125 = fieldNorm(doc=1134)
          0.061452236 = weight(abstract_txt:library in 1134) [ClassicSimilarity], result of:
            0.061452236 = score(doc=1134,freq=2.0), product of:
              0.109206855 = queryWeight, product of:
                1.7605969 = boost
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.019486202 = queryNorm
              0.5627141 = fieldWeight in 1134, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.125 = fieldNorm(doc=1134)
          0.4532127 = weight(abstract_txt:union in 1134) [ClassicSimilarity], result of:
            0.4532127 = score(doc=1134,freq=4.0), product of:
              0.29838014 = queryWeight, product of:
                2.5202901 = boost
                6.0756416 = idf(docFreq=266, maxDocs=42740)
                0.019486202 = queryNorm
              1.5189104 = fieldWeight in 1134, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.0756416 = idf(docFreq=266, maxDocs=42740)
                0.125 = fieldNorm(doc=1134)
          0.37098575 = weight(abstract_txt:catalogues in 1134) [ClassicSimilarity], result of:
            0.37098575 = score(doc=1134,freq=2.0), product of:
              0.3900314 = queryWeight, product of:
                3.7199728 = boost
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.019486202 = queryNorm
              0.9511689 = fieldWeight in 1134, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.125 = fieldNorm(doc=1134)
        0.2 = coord(5/25)
    
  3. Golub, K.: Automatic subject indexing of text (2019) 0.17
    0.17093469 = sum of:
      0.17093469 = product of:
        0.5341709 = sum of:
          0.016199594 = weight(abstract_txt:been in 1269) [ClassicSimilarity], result of:
            0.016199594 = score(doc=1269,freq=1.0), product of:
              0.07127122 = queryWeight, product of:
                1.0057199 = boost
                3.6367204 = idf(docFreq=3059, maxDocs=42740)
                0.019486202 = queryNorm
              0.22729503 = fieldWeight in 1269, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6367204 = idf(docFreq=3059, maxDocs=42740)
                0.0625 = fieldNorm(doc=1269)
          0.007366037 = weight(abstract_txt:this in 1269) [ClassicSimilarity], result of:
            0.007366037 = score(doc=1269,freq=1.0), product of:
              0.048242647 = queryWeight, product of:
                1.0134007 = boost
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.019486202 = queryNorm
              0.15268725 = fieldWeight in 1269, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.0625 = fieldNorm(doc=1269)
          0.07253259 = weight(abstract_txt:enrich in 1269) [ClassicSimilarity], result of:
            0.07253259 = score(doc=1269,freq=1.0), product of:
              0.1536704 = queryWeight, product of:
                1.0442394 = boost
                7.5520167 = idf(docFreq=60, maxDocs=42740)
                0.019486202 = queryNorm
              0.47200105 = fieldWeight in 1269, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5520167 = idf(docFreq=60, maxDocs=42740)
                0.0625 = fieldNorm(doc=1269)
          0.008061899 = weight(abstract_txt:with in 1269) [ClassicSimilarity], result of:
            0.008061899 = score(doc=1269,freq=1.0), product of:
              0.051235 = queryWeight, product of:
                1.0443571 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.019486202 = queryNorm
              0.15735139 = fieldWeight in 1269, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.0625 = fieldNorm(doc=1269)
          0.009666715 = weight(abstract_txt:information in 1269) [ClassicSimilarity], result of:
            0.009666715 = score(doc=1269,freq=1.0), product of:
              0.06364643 = queryWeight, product of:
                1.3440703 = boost
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.019486202 = queryNorm
              0.1518815 = fieldWeight in 1269, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.0625 = fieldNorm(doc=1269)
          0.114646174 = weight(abstract_txt:clustering in 1269) [ClassicSimilarity], result of:
            0.114646174 = score(doc=1269,freq=2.0), product of:
              0.20851685 = queryWeight, product of:
                1.720246 = boost
                6.220473 = idf(docFreq=230, maxDocs=42740)
                0.019486202 = queryNorm
              0.5498173 = fieldWeight in 1269, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.220473 = idf(docFreq=230, maxDocs=42740)
                0.0625 = fieldNorm(doc=1269)
          0.06959497 = weight(abstract_txt:across in 1269) [ClassicSimilarity], result of:
            0.06959497 = score(doc=1269,freq=1.0), product of:
              0.21560581 = queryWeight, product of:
                2.1423767 = boost
                5.1646085 = idf(docFreq=663, maxDocs=42740)
                0.019486202 = queryNorm
              0.32278803 = fieldWeight in 1269, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1646085 = idf(docFreq=663, maxDocs=42740)
                0.0625 = fieldNorm(doc=1269)
          0.23610292 = weight(abstract_txt:indexing in 1269) [ClassicSimilarity], result of:
            0.23610292 = score(doc=1269,freq=6.0), product of:
              0.3553186 = queryWeight, product of:
                4.2010994 = boost
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.019486202 = queryNorm
              0.6644823 = fieldWeight in 1269, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.0625 = fieldNorm(doc=1269)
        0.32 = coord(8/25)
    
  4. McClellan, D.: Subject access : what degree of sophistication? (1993) 0.17
    0.17086807 = sum of:
      0.17086807 = product of:
        0.6102431 = sum of:
          0.024299389 = weight(abstract_txt:been in 118) [ClassicSimilarity], result of:
            0.024299389 = score(doc=118,freq=1.0), product of:
              0.07127122 = queryWeight, product of:
                1.0057199 = boost
                3.6367204 = idf(docFreq=3059, maxDocs=42740)
                0.019486202 = queryNorm
              0.34094253 = fieldWeight in 118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6367204 = idf(docFreq=3059, maxDocs=42740)
                0.09375 = fieldNorm(doc=118)
          0.0110490555 = weight(abstract_txt:this in 118) [ClassicSimilarity], result of:
            0.0110490555 = score(doc=118,freq=1.0), product of:
              0.048242647 = queryWeight, product of:
                1.0134007 = boost
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.019486202 = queryNorm
              0.22903088 = fieldWeight in 118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.09375 = fieldNorm(doc=118)
          0.01710187 = weight(abstract_txt:with in 118) [ClassicSimilarity], result of:
            0.01710187 = score(doc=118,freq=2.0), product of:
              0.051235 = queryWeight, product of:
                1.0443571 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.019486202 = queryNorm
              0.33379272 = fieldWeight in 118, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.09375 = fieldNorm(doc=118)
          0.056355502 = weight(abstract_txt:cataloguing in 118) [ClassicSimilarity], result of:
            0.056355502 = score(doc=118,freq=1.0), product of:
              0.1248748 = queryWeight, product of:
                1.3312432 = boost
                4.813824 = idf(docFreq=942, maxDocs=42740)
                0.019486202 = queryNorm
              0.45129603 = fieldWeight in 118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.813824 = idf(docFreq=942, maxDocs=42740)
                0.09375 = fieldNorm(doc=118)
          0.05644748 = weight(abstract_txt:library in 118) [ClassicSimilarity], result of:
            0.05644748 = score(doc=118,freq=3.0), product of:
              0.109206855 = queryWeight, product of:
                1.7605969 = boost
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.019486202 = queryNorm
              0.5168859 = fieldWeight in 118, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.09375 = fieldNorm(doc=118)
          0.24824487 = weight(abstract_txt:entries in 118) [ClassicSimilarity], result of:
            0.24824487 = score(doc=118,freq=2.0), product of:
              0.30487692 = queryWeight, product of:
                2.5475802 = boost
                6.1414294 = idf(docFreq=249, maxDocs=42740)
                0.019486202 = queryNorm
              0.8142462 = fieldWeight in 118, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.1414294 = idf(docFreq=249, maxDocs=42740)
                0.09375 = fieldNorm(doc=118)
          0.1967449 = weight(abstract_txt:catalogues in 118) [ClassicSimilarity], result of:
            0.1967449 = score(doc=118,freq=1.0), product of:
              0.3900314 = queryWeight, product of:
                3.7199728 = boost
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.019486202 = queryNorm
              0.5044335 = fieldWeight in 118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.09375 = fieldNorm(doc=118)
        0.28 = coord(7/25)
    
  5. EU transcends library limits (1997) 0.16
    0.16460603 = sum of:
      0.16460603 = product of:
        0.6858585 = sum of:
          0.03436453 = weight(abstract_txt:been in 463) [ClassicSimilarity], result of:
            0.03436453 = score(doc=463,freq=2.0), product of:
              0.07127122 = queryWeight, product of:
                1.0057199 = boost
                3.6367204 = idf(docFreq=3059, maxDocs=42740)
                0.019486202 = queryNorm
              0.48216558 = fieldWeight in 463, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6367204 = idf(docFreq=3059, maxDocs=42740)
                0.09375 = fieldNorm(doc=463)
          0.01710187 = weight(abstract_txt:with in 463) [ClassicSimilarity], result of:
            0.01710187 = score(doc=463,freq=2.0), product of:
              0.051235 = queryWeight, product of:
                1.0443571 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.019486202 = queryNorm
              0.33379272 = fieldWeight in 463, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.09375 = fieldNorm(doc=463)
          0.014500072 = weight(abstract_txt:information in 463) [ClassicSimilarity], result of:
            0.014500072 = score(doc=463,freq=1.0), product of:
              0.06364643 = queryWeight, product of:
                1.3440703 = boost
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.019486202 = queryNorm
              0.22782224 = fieldWeight in 463, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.09375 = fieldNorm(doc=463)
          0.05644748 = weight(abstract_txt:library in 463) [ClassicSimilarity], result of:
            0.05644748 = score(doc=463,freq=3.0), product of:
              0.109206855 = queryWeight, product of:
                1.7605969 = boost
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.019486202 = queryNorm
              0.5168859 = fieldWeight in 463, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.09375 = fieldNorm(doc=463)
          0.16995476 = weight(abstract_txt:union in 463) [ClassicSimilarity], result of:
            0.16995476 = score(doc=463,freq=1.0), product of:
              0.29838014 = queryWeight, product of:
                2.5202901 = boost
                6.0756416 = idf(docFreq=266, maxDocs=42740)
                0.019486202 = queryNorm
              0.5695914 = fieldWeight in 463, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.0756416 = idf(docFreq=266, maxDocs=42740)
                0.09375 = fieldNorm(doc=463)
          0.3934898 = weight(abstract_txt:catalogues in 463) [ClassicSimilarity], result of:
            0.3934898 = score(doc=463,freq=4.0), product of:
              0.3900314 = queryWeight, product of:
                3.7199728 = boost
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.019486202 = queryNorm
              1.008867 = fieldWeight in 463, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.09375 = fieldNorm(doc=463)
        0.24 = coord(6/25)