Document (#39903)

Author
Zhang, L.
Rousseau, R.
Glänzel, W.
Title
Diversity of references as an indicator of the interdisciplinarity of journals : taking similarity between subject fields into account
Source
Journal of the Association for Information Science and Technology. 67(2016) no.5, S.1257-1265
Year
2016
Abstract
The objective of this article is to further the study of journal interdisciplinarity, or, more generally, knowledge integration at the level of individual articles. Interdisciplinarity is operationalized by the diversity of subject fields assigned to cited items in the article's reference list. Subject fields and subfields were obtained from the Leuven-Budapest (ECOOM) subject-classification scheme, while disciplinary diversity was measured taking variety, balance, and disparity into account. As diversity measure we use a Hill-type true diversity in the sense of Jost and Leinster-Cobbold. The analysis is conducted in 3 steps. In the first part, the properties of this measure are discussed, and, on the basis of these properties it is shown that the measure has the potential to serve as an indicator of interdisciplinarity. In the second part the applicability of this indicator is shown using selected journals from several research fields ranging from mathematics to social sciences. Finally, the often-heard argument, namely, that interdisciplinary research exhibits larger visibility and impact, is studied on the basis of these selected journals. Yet, as only 7 journals, representing a total of 15,757 articles, are studied, albeit chosen to cover a large range of interdisciplinarity, further research is still needed.
Content
Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23487/abstract.
Theme
Informetrie

Similar documents (author)

  1. Zhang, L.; Rousseau, R.; Glänzel, W.: Document-type country profiles (2011) 5.00
    4.9969525 = sum of:
      4.9969525 = sum of:
        0.908393 = weight(author_txt:zhang in 487) [ClassicSimilarity], result of:
          0.908393 = score(doc=487,freq=1.0), product of:
            0.3783109 = queryWeight, product of:
              6.40315 = idf(docFreq=199, maxDocs=44421)
              0.059081998 = queryNorm
            2.4011812 = fieldWeight in 487, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              6.40315 = idf(docFreq=199, maxDocs=44421)
              0.375 = fieldNorm(doc=487)
        1.5132827 = weight(author_txt:rousseau in 487) [ClassicSimilarity], result of:
          1.5132827 = score(doc=487,freq=1.0), product of:
            0.53163433 = queryWeight, product of:
              1.1854469 = boost
              7.590594 = idf(docFreq=60, maxDocs=44421)
              0.059081998 = queryNorm
            2.8464727 = fieldWeight in 487, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.590594 = idf(docFreq=60, maxDocs=44421)
              0.375 = fieldNorm(doc=487)
        2.5752769 = weight(author_txt:glänzel in 487) [ClassicSimilarity], result of:
          2.5752769 = score(doc=487,freq=1.0), product of:
            0.7577901 = queryWeight, product of:
              1.415305 = boost
              9.06241 = idf(docFreq=13, maxDocs=44421)
              0.059081998 = queryNorm
            3.398404 = fieldWeight in 487, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.06241 = idf(docFreq=13, maxDocs=44421)
              0.375 = fieldNorm(doc=487)
    
  2. Glänzel, W.; Rousseau, D.; Zhang, L.: ¬A visual representation of relative first-citation times (2012) 5.00
    4.9969525 = sum of:
      4.9969525 = sum of:
        0.908393 = weight(author_txt:zhang in 1285) [ClassicSimilarity], result of:
          0.908393 = score(doc=1285,freq=1.0), product of:
            0.3783109 = queryWeight, product of:
              6.40315 = idf(docFreq=199, maxDocs=44421)
              0.059081998 = queryNorm
            2.4011812 = fieldWeight in 1285, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              6.40315 = idf(docFreq=199, maxDocs=44421)
              0.375 = fieldNorm(doc=1285)
        1.5132827 = weight(author_txt:rousseau in 1285) [ClassicSimilarity], result of:
          1.5132827 = score(doc=1285,freq=1.0), product of:
            0.53163433 = queryWeight, product of:
              1.1854469 = boost
              7.590594 = idf(docFreq=60, maxDocs=44421)
              0.059081998 = queryNorm
            2.8464727 = fieldWeight in 1285, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.590594 = idf(docFreq=60, maxDocs=44421)
              0.375 = fieldNorm(doc=1285)
        2.5752769 = weight(author_txt:glänzel in 1285) [ClassicSimilarity], result of:
          2.5752769 = score(doc=1285,freq=1.0), product of:
            0.7577901 = queryWeight, product of:
              1.415305 = boost
              9.06241 = idf(docFreq=13, maxDocs=44421)
              0.059081998 = queryNorm
            3.398404 = fieldWeight in 1285, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.06241 = idf(docFreq=13, maxDocs=44421)
              0.375 = fieldNorm(doc=1285)
    
  3. Zhang, L.; Thijs, B.; Glänzel, W.: What does scientometrics share with other "metrics" sciences? (2013) 2.32
    2.3224466 = sum of:
      2.3224466 = product of:
        3.4836698 = sum of:
          0.908393 = weight(author_txt:zhang in 1960) [ClassicSimilarity], result of:
            0.908393 = score(doc=1960,freq=1.0), product of:
              0.3783109 = queryWeight, product of:
                6.40315 = idf(docFreq=199, maxDocs=44421)
                0.059081998 = queryNorm
              2.4011812 = fieldWeight in 1960, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.40315 = idf(docFreq=199, maxDocs=44421)
                0.375 = fieldNorm(doc=1960)
          2.5752769 = weight(author_txt:glänzel in 1960) [ClassicSimilarity], result of:
            2.5752769 = score(doc=1960,freq=1.0), product of:
              0.7577901 = queryWeight, product of:
                1.415305 = boost
                9.06241 = idf(docFreq=13, maxDocs=44421)
                0.059081998 = queryNorm
              3.398404 = fieldWeight in 1960, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.06241 = idf(docFreq=13, maxDocs=44421)
                0.375 = fieldNorm(doc=1960)
        0.6666667 = coord(2/3)
    
  4. Glänzel, W.: Visual bibliometrics : eine visuelle Oberfläche zur Erweiterung der Nutzungsmöglichkeiten bibliographischer Datenbanken (1996) 1.43
    1.4307092 = sum of:
      1.4307092 = product of:
        4.2921276 = sum of:
          4.2921276 = weight(author_txt:glänzel in 6178) [ClassicSimilarity], result of:
            4.2921276 = score(doc=6178,freq=1.0), product of:
              0.7577901 = queryWeight, product of:
                1.415305 = boost
                9.06241 = idf(docFreq=13, maxDocs=44421)
                0.059081998 = queryNorm
              5.664006 = fieldWeight in 6178, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.06241 = idf(docFreq=13, maxDocs=44421)
                0.625 = fieldNorm(doc=6178)
        0.33333334 = coord(1/3)
    
  5. Glänzel, W.: Coauthorship patterns and trends in the sciences (1980-1998) : a bibliometric study with implications for database indexing and search strategies (2002) 1.43
    1.4307092 = sum of:
      1.4307092 = product of:
        4.2921276 = sum of:
          4.2921276 = weight(author_txt:glänzel in 935) [ClassicSimilarity], result of:
            4.2921276 = score(doc=935,freq=1.0), product of:
              0.7577901 = queryWeight, product of:
                1.415305 = boost
                9.06241 = idf(docFreq=13, maxDocs=44421)
                0.059081998 = queryNorm
              5.664006 = fieldWeight in 935, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.06241 = idf(docFreq=13, maxDocs=44421)
                0.625 = fieldNorm(doc=935)
        0.33333334 = coord(1/3)
    

Similar documents (content)

  1. Morillo, F.; Bordorns, M.; Gómez, I.: Interdisciplinarity in science : a tentative typology of disciplines and research areas (2003) 0.27
    0.27232623 = sum of:
      0.27232623 = product of:
        1.1346927 = sum of:
          0.020539323 = weight(abstract_txt:research in 3118) [ClassicSimilarity], result of:
            0.020539323 = score(doc=3118,freq=3.0), product of:
              0.060050398 = queryWeight, product of:
                1.1174351 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.01700842 = queryNorm
              0.34203476 = fieldWeight in 3118, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.0625 = fieldNorm(doc=3118)
          0.029963138 = weight(abstract_txt:subject in 3118) [ClassicSimilarity], result of:
            0.029963138 = score(doc=3118,freq=1.0), product of:
              0.122613035 = queryWeight, product of:
                1.8437501 = boost
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.01700842 = queryNorm
              0.24437155 = fieldWeight in 3118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.0625 = fieldNorm(doc=3118)
          0.11840181 = weight(abstract_txt:indicator in 3118) [ClassicSimilarity], result of:
            0.11840181 = score(doc=3118,freq=1.0), product of:
              0.27844393 = queryWeight, product of:
                2.4062085 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.01700842 = queryNorm
              0.42522675 = fieldWeight in 3118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.0625 = fieldNorm(doc=3118)
          0.06758737 = weight(abstract_txt:journals in 3118) [ClassicSimilarity], result of:
            0.06758737 = score(doc=3118,freq=1.0), product of:
              0.21088976 = queryWeight, product of:
                2.4180288 = boost
                5.1277876 = idf(docFreq=715, maxDocs=44421)
                0.01700842 = queryNorm
              0.32048672 = fieldWeight in 3118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1277876 = idf(docFreq=715, maxDocs=44421)
                0.0625 = fieldNorm(doc=3118)
          0.16450022 = weight(abstract_txt:diversity in 3118) [ClassicSimilarity], result of:
            0.16450022 = score(doc=3118,freq=1.0), product of:
              0.41104823 = queryWeight, product of:
                3.774289 = boost
                6.40315 = idf(docFreq=199, maxDocs=44421)
                0.01700842 = queryNorm
              0.40019688 = fieldWeight in 3118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.40315 = idf(docFreq=199, maxDocs=44421)
                0.0625 = fieldNorm(doc=3118)
          0.7337008 = weight(abstract_txt:interdisciplinarity in 3118) [ClassicSimilarity], result of:
            0.7337008 = score(doc=3118,freq=8.0), product of:
              0.5568837 = queryWeight, product of:
                4.393099 = boost
                7.4529724 = idf(docFreq=69, maxDocs=44421)
                0.01700842 = queryNorm
              1.3175118 = fieldWeight in 3118, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                7.4529724 = idf(docFreq=69, maxDocs=44421)
                0.0625 = fieldNorm(doc=3118)
        0.24 = coord(6/25)
    
  2. Steele, T.W.; Stier, J.C.: ¬The impact of interdisciplinary research in the environmental sciences : a forestry case study (2000) 0.27
    0.26931435 = sum of:
      0.26931435 = product of:
        0.96183693 = sum of:
          0.10162942 = weight(abstract_txt:article's in 5592) [ClassicSimilarity], result of:
            0.10162942 = score(doc=5592,freq=1.0), product of:
              0.15026739 = queryWeight, product of:
                1.0205543 = boost
                8.656945 = idf(docFreq=20, maxDocs=44421)
                0.01700842 = queryNorm
              0.67632383 = fieldWeight in 5592, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.656945 = idf(docFreq=20, maxDocs=44421)
                0.078125 = fieldNorm(doc=5592)
          0.01482298 = weight(abstract_txt:research in 5592) [ClassicSimilarity], result of:
            0.01482298 = score(doc=5592,freq=1.0), product of:
              0.060050398 = queryWeight, product of:
                1.1174351 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.01700842 = queryNorm
              0.24684234 = fieldWeight in 5592, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.078125 = fieldNorm(doc=5592)
          0.05925811 = weight(abstract_txt:articles in 5592) [ClassicSimilarity], result of:
            0.05925811 = score(doc=5592,freq=3.0), product of:
              0.091619216 = queryWeight, product of:
                1.1269691 = boost
                4.7798095 = idf(docFreq=1013, maxDocs=44421)
                0.01700842 = queryNorm
              0.6467869 = fieldWeight in 5592, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.7798095 = idf(docFreq=1013, maxDocs=44421)
                0.078125 = fieldNorm(doc=5592)
          0.037453923 = weight(abstract_txt:subject in 5592) [ClassicSimilarity], result of:
            0.037453923 = score(doc=5592,freq=1.0), product of:
              0.122613035 = queryWeight, product of:
                1.8437501 = boost
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.01700842 = queryNorm
              0.30546445 = fieldWeight in 5592, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.078125 = fieldNorm(doc=5592)
          0.08448421 = weight(abstract_txt:journals in 5592) [ClassicSimilarity], result of:
            0.08448421 = score(doc=5592,freq=1.0), product of:
              0.21088976 = queryWeight, product of:
                2.4180288 = boost
                5.1277876 = idf(docFreq=715, maxDocs=44421)
                0.01700842 = queryNorm
              0.40060842 = fieldWeight in 5592, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1277876 = idf(docFreq=715, maxDocs=44421)
                0.078125 = fieldNorm(doc=5592)
          0.20562528 = weight(abstract_txt:diversity in 5592) [ClassicSimilarity], result of:
            0.20562528 = score(doc=5592,freq=1.0), product of:
              0.41104823 = queryWeight, product of:
                3.774289 = boost
                6.40315 = idf(docFreq=199, maxDocs=44421)
                0.01700842 = queryNorm
              0.5002461 = fieldWeight in 5592, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.40315 = idf(docFreq=199, maxDocs=44421)
                0.078125 = fieldNorm(doc=5592)
          0.458563 = weight(abstract_txt:interdisciplinarity in 5592) [ClassicSimilarity], result of:
            0.458563 = score(doc=5592,freq=2.0), product of:
              0.5568837 = queryWeight, product of:
                4.393099 = boost
                7.4529724 = idf(docFreq=69, maxDocs=44421)
                0.01700842 = queryNorm
              0.82344484 = fieldWeight in 5592, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.4529724 = idf(docFreq=69, maxDocs=44421)
                0.078125 = fieldNorm(doc=5592)
        0.28 = coord(7/25)
    
  3. Herring, S.D.: ¬The value of interdisciplinarity : a study based on the design of Internet search engines (1999) 0.21
    0.21240269 = sum of:
      0.21240269 = product of:
        0.6637584 = sum of:
          0.025349788 = weight(abstract_txt:further in 4458) [ClassicSimilarity], result of:
            0.025349788 = score(doc=4458,freq=1.0), product of:
              0.08705319 = queryWeight, product of:
                1.0985279 = boost
                4.6591816 = idf(docFreq=1143, maxDocs=44421)
                0.01700842 = queryNorm
              0.29119885 = fieldWeight in 4458, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6591816 = idf(docFreq=1143, maxDocs=44421)
                0.0625 = fieldNorm(doc=4458)
          0.016770288 = weight(abstract_txt:research in 4458) [ClassicSimilarity], result of:
            0.016770288 = score(doc=4458,freq=2.0), product of:
              0.060050398 = queryWeight, product of:
                1.1174351 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.01700842 = queryNorm
              0.27927023 = fieldWeight in 4458, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.0625 = fieldNorm(doc=4458)
          0.02737015 = weight(abstract_txt:articles in 4458) [ClassicSimilarity], result of:
            0.02737015 = score(doc=4458,freq=1.0), product of:
              0.091619216 = queryWeight, product of:
                1.1269691 = boost
                4.7798095 = idf(docFreq=1013, maxDocs=44421)
                0.01700842 = queryNorm
              0.2987381 = fieldWeight in 4458, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7798095 = idf(docFreq=1013, maxDocs=44421)
                0.0625 = fieldNorm(doc=4458)
          0.035900686 = weight(abstract_txt:selected in 4458) [ClassicSimilarity], result of:
            0.035900686 = score(doc=4458,freq=1.0), product of:
              0.10978347 = queryWeight, product of:
                1.2336365 = boost
                5.2322173 = idf(docFreq=644, maxDocs=44421)
                0.01700842 = queryNorm
              0.32701358 = fieldWeight in 4458, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2322173 = idf(docFreq=644, maxDocs=44421)
                0.0625 = fieldNorm(doc=4458)
          0.060396932 = weight(abstract_txt:measure in 4458) [ClassicSimilarity], result of:
            0.060396932 = score(doc=4458,freq=1.0), product of:
              0.17776331 = queryWeight, product of:
                1.9225844 = boost
                5.4361663 = idf(docFreq=525, maxDocs=44421)
                0.01700842 = queryNorm
              0.3397604 = fieldWeight in 4458, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4361663 = idf(docFreq=525, maxDocs=44421)
                0.0625 = fieldNorm(doc=4458)
          0.06353273 = weight(abstract_txt:fields in 4458) [ClassicSimilarity], result of:
            0.06353273 = score(doc=4458,freq=1.0), product of:
              0.20236877 = queryWeight, product of:
                2.368675 = boost
                5.0231256 = idf(docFreq=794, maxDocs=44421)
                0.01700842 = queryNorm
              0.31394535 = fieldWeight in 4458, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0231256 = idf(docFreq=794, maxDocs=44421)
                0.0625 = fieldNorm(doc=4458)
          0.06758737 = weight(abstract_txt:journals in 4458) [ClassicSimilarity], result of:
            0.06758737 = score(doc=4458,freq=1.0), product of:
              0.21088976 = queryWeight, product of:
                2.4180288 = boost
                5.1277876 = idf(docFreq=715, maxDocs=44421)
                0.01700842 = queryNorm
              0.32048672 = fieldWeight in 4458, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1277876 = idf(docFreq=715, maxDocs=44421)
                0.0625 = fieldNorm(doc=4458)
          0.3668504 = weight(abstract_txt:interdisciplinarity in 4458) [ClassicSimilarity], result of:
            0.3668504 = score(doc=4458,freq=2.0), product of:
              0.5568837 = queryWeight, product of:
                4.393099 = boost
                7.4529724 = idf(docFreq=69, maxDocs=44421)
                0.01700842 = queryNorm
              0.6587559 = fieldWeight in 4458, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.4529724 = idf(docFreq=69, maxDocs=44421)
                0.0625 = fieldNorm(doc=4458)
        0.32 = coord(8/25)
    
  4. Zhou, H.; Guns, R.; Engels, T.C.E.: Are social sciences becoming more interdisciplinary? : evidence from publications 1960-2014 (2022) 0.19
    0.19279602 = sum of:
      0.19279602 = product of:
        0.9639801 = sum of:
          0.085724555 = weight(abstract_txt:disparity in 1647) [ClassicSimilarity], result of:
            0.085724555 = score(doc=1647,freq=1.0), product of:
              0.15566655 = queryWeight, product of:
                1.0387269 = boost
                8.811096 = idf(docFreq=17, maxDocs=44421)
                0.01700842 = queryNorm
              0.5506935 = fieldWeight in 1647, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.811096 = idf(docFreq=17, maxDocs=44421)
                0.0625 = fieldNorm(doc=1647)
          0.016770288 = weight(abstract_txt:research in 1647) [ClassicSimilarity], result of:
            0.016770288 = score(doc=1647,freq=2.0), product of:
              0.060050398 = queryWeight, product of:
                1.1174351 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.01700842 = queryNorm
              0.27927023 = fieldWeight in 1647, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.0625 = fieldNorm(doc=1647)
          0.110041924 = weight(abstract_txt:fields in 1647) [ClassicSimilarity], result of:
            0.110041924 = score(doc=1647,freq=3.0), product of:
              0.20236877 = queryWeight, product of:
                2.368675 = boost
                5.0231256 = idf(docFreq=794, maxDocs=44421)
                0.01700842 = queryNorm
              0.5437693 = fieldWeight in 1647, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.0231256 = idf(docFreq=794, maxDocs=44421)
                0.0625 = fieldNorm(doc=1647)
          0.23263845 = weight(abstract_txt:diversity in 1647) [ClassicSimilarity], result of:
            0.23263845 = score(doc=1647,freq=2.0), product of:
              0.41104823 = queryWeight, product of:
                3.774289 = boost
                6.40315 = idf(docFreq=199, maxDocs=44421)
                0.01700842 = queryNorm
              0.56596386 = fieldWeight in 1647, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.40315 = idf(docFreq=199, maxDocs=44421)
                0.0625 = fieldNorm(doc=1647)
          0.51880485 = weight(abstract_txt:interdisciplinarity in 1647) [ClassicSimilarity], result of:
            0.51880485 = score(doc=1647,freq=4.0), product of:
              0.5568837 = queryWeight, product of:
                4.393099 = boost
                7.4529724 = idf(docFreq=69, maxDocs=44421)
                0.01700842 = queryNorm
              0.93162155 = fieldWeight in 1647, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                7.4529724 = idf(docFreq=69, maxDocs=44421)
                0.0625 = fieldNorm(doc=1647)
        0.2 = coord(5/25)
    
  5. Gomez, I.: Coping with the problem of subject classification diversity (1996) 0.17
    0.17358907 = sum of:
      0.17358907 = product of:
        0.8679453 = sum of:
          0.025155433 = weight(abstract_txt:research in 5142) [ClassicSimilarity], result of:
            0.025155433 = score(doc=5142,freq=2.0), product of:
              0.060050398 = queryWeight, product of:
                1.1174351 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.01700842 = queryNorm
              0.41890535 = fieldWeight in 5142, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.09375 = fieldNorm(doc=5142)
          0.06356141 = weight(abstract_txt:subject in 5142) [ClassicSimilarity], result of:
            0.06356141 = score(doc=5142,freq=2.0), product of:
              0.122613035 = queryWeight, product of:
                1.8437501 = boost
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.01700842 = queryNorm
              0.5183903 = fieldWeight in 5142, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.09375 = fieldNorm(doc=5142)
          0.14337446 = weight(abstract_txt:journals in 5142) [ClassicSimilarity], result of:
            0.14337446 = score(doc=5142,freq=2.0), product of:
              0.21088976 = queryWeight, product of:
                2.4180288 = boost
                5.1277876 = idf(docFreq=715, maxDocs=44421)
                0.01700842 = queryNorm
              0.679855 = fieldWeight in 5142, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.1277876 = idf(docFreq=715, maxDocs=44421)
                0.09375 = fieldNorm(doc=5142)
          0.24675032 = weight(abstract_txt:diversity in 5142) [ClassicSimilarity], result of:
            0.24675032 = score(doc=5142,freq=1.0), product of:
              0.41104823 = queryWeight, product of:
                3.774289 = boost
                6.40315 = idf(docFreq=199, maxDocs=44421)
                0.01700842 = queryNorm
              0.6002953 = fieldWeight in 5142, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.40315 = idf(docFreq=199, maxDocs=44421)
                0.09375 = fieldNorm(doc=5142)
          0.38910365 = weight(abstract_txt:interdisciplinarity in 5142) [ClassicSimilarity], result of:
            0.38910365 = score(doc=5142,freq=1.0), product of:
              0.5568837 = queryWeight, product of:
                4.393099 = boost
                7.4529724 = idf(docFreq=69, maxDocs=44421)
                0.01700842 = queryNorm
              0.69871616 = fieldWeight in 5142, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.4529724 = idf(docFreq=69, maxDocs=44421)
                0.09375 = fieldNorm(doc=5142)
        0.2 = coord(5/25)