Document (#43446)

Author

Araújo, P.C. de
Gutierres Castanha, R.C.
Hjoerland, B.

Title

Citation indexing and indexes

Source

Knowledge organization. 48(2021) no.1, S.72-101

Year

2021

Series

Reviews of Concepts in Knowledge Organization

Abstract

A citation index is a bibliographic database that provides citation links between documents. The first modern citation index was suggested by the researcher Eugene Garfield in 1955 and created by him in 1964, and it represents an important innovation to knowledge organization and information retrieval. This article describes citation indexes in general, considering the modern citation indexes, including Web of Science, Scopus, Google Scholar, Microsoft Academic, Crossref, Dimensions and some special citation indexes and predecessors to the modern citation index like Shepard's Citations. We present comparative studies of the major ones and survey theoretical problems related to the role of citation indexes as subject access points (SAP), recognizing the implications to knowledge organization and information retrieval. Finally, studies on citation behavior are presented and the influence of citation indexes on knowledge organization, information retrieval and the scientific information ecosystem is recognized.

Content

DOI:10.5771/0943-7444-2021-1-72.

Theme

Citation indexing

Object

Science Citation Index
Google Scholar
Web of Science
Shepard's Citations
Scopus
Microsoft Academic
Crossref
Dimensions

Similar documents (author)

1. Gutierres Castanha, R.C.; Hilário, C.M.; Araújo, P.C. de; Cabrini Grácio, M.C.: Citation analysis of North American Symposium on Knowledge Organization (NASKO) Proceedings (2007-2015) (2017) 2.09

   2.0947683 = sum of:
     2.0947683 = product of:
       3.1421523 = sum of:
         1.542054 = weight(author_txt:araújo in 4863) [ClassicSimilarity], result of:
           1.542054 = score(doc=4863,freq=1.0), product of:
             0.64899606 = queryWeight, product of:
               1.3257662 = boost
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.05150597 = queryNorm
             2.3760607 = fieldWeight in 4863, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.25 = fieldNorm(doc=4863)
         1.6000983 = weight(author_txt:castanha in 4863) [ClassicSimilarity], result of:
           1.6000983 = score(doc=4863,freq=1.0), product of:
             0.6651814 = queryWeight, product of:
               1.3421961 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.05150597 = queryNorm
             2.4055066 = fieldWeight in 4863, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.25 = fieldNorm(doc=4863)
       0.6666667 = coord(2/3)
   

2. Castanha, R.C.G. => Gutierres Castanha, R.C.: 1.32

   1.3200138 = sum of:
     1.3200138 = product of:
       3.9600413 = sum of:
         3.9600413 = weight(author_txt:castanha in 4856) [ClassicSimilarity], result of:
           3.9600413 = score(doc=4856,freq=2.0), product of:
             0.6651814 = queryWeight, product of:
               1.3421961 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.05150597 = queryNorm
             5.9533253 = fieldWeight in 4856, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.4375 = fieldNorm(doc=4856)
       0.33333334 = coord(1/3)
   

3. Castanha, R.C. Gutierres => Gutierres Castanha, R.C.: 1.13

   1.1314404 = sum of:
     1.1314404 = product of:
       3.394321 = sum of:
         3.394321 = weight(author_txt:castanha in 1229) [ClassicSimilarity], result of:
           3.394321 = score(doc=1229,freq=2.0), product of:
             0.6651814 = queryWeight, product of:
               1.3421961 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.05150597 = queryNorm
             5.10285 = fieldWeight in 1229, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.375 = fieldNorm(doc=1229)
       0.33333334 = coord(1/3)
   

4. Araújo, C.-A.-A. => Avila Araújo, C.A.: 1.09

   1.0903969 = sum of:
     1.0903969 = product of:
       3.2711904 = sum of:
         3.2711904 = weight(author_txt:araújo in 445) [ClassicSimilarity], result of:
           3.2711904 = score(doc=445,freq=2.0), product of:
             0.64899606 = queryWeight, product of:
               1.3257662 = boost
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.05150597 = queryNorm
             5.0403857 = fieldWeight in 445, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.375 = fieldNorm(doc=445)
       0.33333334 = coord(1/3)
   

5. Castanha, R.C.G.; Wolfram, D.: ¬The domain of knowledge organization : a bibliometric analysis of prolific authors and their intellectual space (2018) 1.07

   1.0667322 = sum of:
     1.0667322 = product of:
       3.2001965 = sum of:
         3.2001965 = weight(author_txt:castanha in 150) [ClassicSimilarity], result of:
           3.2001965 = score(doc=150,freq=1.0), product of:
             0.6651814 = queryWeight, product of:
               1.3421961 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.05150597 = queryNorm
             4.811013 = fieldWeight in 150, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.5 = fieldNorm(doc=150)
       0.33333334 = coord(1/3)
   

Similar documents (content)

1. Garfield, E.: Citation indexes for science (1985) 0.35

   0.34960654 = sum of:
     0.34960654 = product of:
       1.0925205 = sum of:
         0.03500206 = weight(abstract_txt:scholar in 4632) [ClassicSimilarity], result of:
           0.03500206 = score(doc=4632,freq=1.0), product of:
             0.108000174 = queryWeight, product of:
               1.0945078 = boost
               6.9139757 = idf(docFreq=119, maxDocs=44421)
               0.014271767 = queryNorm
             0.32409263 = fieldWeight in 4632, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.9139757 = idf(docFreq=119, maxDocs=44421)
               0.046875 = fieldNorm(doc=4632)
         0.06557687 = weight(abstract_txt:1955 in 4632) [ClassicSimilarity], result of:
           0.06557687 = score(doc=4632,freq=1.0), product of:
             0.164133 = queryWeight, product of:
               1.3492877 = boost
               8.523414 = idf(docFreq=23, maxDocs=44421)
               0.014271767 = queryNorm
             0.399535 = fieldWeight in 4632, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.523414 = idf(docFreq=23, maxDocs=44421)
               0.046875 = fieldNorm(doc=4632)
         0.10445746 = weight(abstract_txt:garfield in 4632) [ClassicSimilarity], result of:
           0.10445746 = score(doc=4632,freq=2.0), product of:
             0.17768265 = queryWeight, product of:
               1.4038773 = boost
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.014271767 = queryNorm
             0.58788776 = fieldWeight in 4632, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.046875 = fieldNorm(doc=4632)
         0.08528238 = weight(abstract_txt:eugene in 4632) [ClassicSimilarity], result of:
           0.08528238 = score(doc=4632,freq=1.0), product of:
             0.1955547 = queryWeight, product of:
               1.4727898 = boost
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.014271767 = queryNorm
             0.43610495 = fieldWeight in 4632, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.046875 = fieldNorm(doc=4632)
         0.00847888 = weight(abstract_txt:information in 4632) [ClassicSimilarity], result of:
           0.00847888 = score(doc=4632,freq=2.0), product of:
             0.052876703 = queryWeight, product of:
               1.5316827 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.014271767 = queryNorm
             0.1603519 = fieldWeight in 4632, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.046875 = fieldNorm(doc=4632)
         0.10212917 = weight(abstract_txt:index in 4632) [ClassicSimilarity], result of:
           0.10212917 = score(doc=4632,freq=9.0), product of:
             0.15290493 = queryWeight, product of:
               2.2556827 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.014271767 = queryNorm
             0.66792595 = fieldWeight in 4632, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.046875 = fieldNorm(doc=4632)
         0.23975325 = weight(abstract_txt:indexes in 4632) [ClassicSimilarity], result of:
           0.23975325 = score(doc=4632,freq=4.0), product of:
             0.44589797 = queryWeight, product of:
               5.4475346 = boost
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.014271767 = queryNorm
             0.53768635 = fieldWeight in 4632, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.046875 = fieldNorm(doc=4632)
         0.45184043 = weight(abstract_txt:citation in 4632) [ClassicSimilarity], result of:
           0.45184043 = score(doc=4632,freq=11.0), product of:
             0.59431785 = queryWeight, product of:
               8.515543 = boost
               4.890223 = idf(docFreq=907, maxDocs=44421)
               0.014271767 = queryNorm
             0.7602673 = fieldWeight in 4632, product of:
               3.3166249 = tf(freq=11.0), with freq of:
                 11.0 = termFreq=11.0
               4.890223 = idf(docFreq=907, maxDocs=44421)
               0.046875 = fieldNorm(doc=4632)
       0.32 = coord(8/25)
   

2. Baird, L.M.; Oppenheim, C.: Do citations matter? (1994) 0.34

   0.34270617 = sum of:
     0.34270617 = product of:
       1.2239506 = sum of:
         0.02721504 = weight(abstract_txt:studies in 6895) [ClassicSimilarity], result of:
           0.02721504 = score(doc=6895,freq=1.0), product of:
             0.08184878 = queryWeight, product of:
               1.3474967 = boost
               4.25605 = idf(docFreq=1711, maxDocs=44421)
               0.014271767 = queryNorm
             0.3325039 = fieldWeight in 6895, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.25605 = idf(docFreq=1711, maxDocs=44421)
               0.078125 = fieldNorm(doc=6895)
         0.17409576 = weight(abstract_txt:garfield in 6895) [ClassicSimilarity], result of:
           0.17409576 = score(doc=6895,freq=2.0), product of:
             0.17768265 = queryWeight, product of:
               1.4038773 = boost
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.014271767 = queryNorm
             0.979813 = fieldWeight in 6895, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.078125 = fieldNorm(doc=6895)
         0.1421373 = weight(abstract_txt:eugene in 6895) [ClassicSimilarity], result of:
           0.1421373 = score(doc=6895,freq=1.0), product of:
             0.1955547 = queryWeight, product of:
               1.4727898 = boost
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.014271767 = queryNorm
             0.7268416 = fieldWeight in 6895, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.078125 = fieldNorm(doc=6895)
         0.009992456 = weight(abstract_txt:information in 6895) [ClassicSimilarity], result of:
           0.009992456 = score(doc=6895,freq=1.0), product of:
             0.052876703 = queryWeight, product of:
               1.5316827 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.014271767 = queryNorm
             0.18897653 = fieldWeight in 6895, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.078125 = fieldNorm(doc=6895)
         0.08024025 = weight(abstract_txt:index in 6895) [ClassicSimilarity], result of:
           0.08024025 = score(doc=6895,freq=2.0), product of:
             0.15290493 = queryWeight, product of:
               2.2556827 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.014271767 = queryNorm
             0.52477217 = fieldWeight in 6895, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.078125 = fieldNorm(doc=6895)
         0.2825519 = weight(abstract_txt:indexes in 6895) [ClassicSimilarity], result of:
           0.2825519 = score(doc=6895,freq=2.0), product of:
             0.44589797 = queryWeight, product of:
               5.4475346 = boost
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.014271767 = queryNorm
             0.63366944 = fieldWeight in 6895, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.078125 = fieldNorm(doc=6895)
         0.5077179 = weight(abstract_txt:citation in 6895) [ClassicSimilarity], result of:
           0.5077179 = score(doc=6895,freq=5.0), product of:
             0.59431785 = queryWeight, product of:
               8.515543 = boost
               4.890223 = idf(docFreq=907, maxDocs=44421)
               0.014271767 = queryNorm
             0.85428685 = fieldWeight in 6895, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.890223 = idf(docFreq=907, maxDocs=44421)
               0.078125 = fieldNorm(doc=6895)
       0.28 = coord(7/25)
   

3. Thelwall, M.: Bibliometrics to webometrics (2009) 0.27

   0.26751357 = sum of:
     0.26751357 = product of:
       0.9554056 = sum of:
         0.123104304 = weight(abstract_txt:garfield in 5239) [ClassicSimilarity], result of:
           0.123104304 = score(doc=5239,freq=1.0), product of:
             0.17768265 = queryWeight, product of:
               1.4038773 = boost
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.014271767 = queryNorm
             0.6928324 = fieldWeight in 5239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.078125 = fieldNorm(doc=5239)
         0.1421373 = weight(abstract_txt:eugene in 5239) [ClassicSimilarity], result of:
           0.1421373 = score(doc=5239,freq=1.0), product of:
             0.1955547 = queryWeight, product of:
               1.4727898 = boost
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.014271767 = queryNorm
             0.7268416 = fieldWeight in 5239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.078125 = fieldNorm(doc=5239)
         0.009992456 = weight(abstract_txt:information in 5239) [ClassicSimilarity], result of:
           0.009992456 = score(doc=5239,freq=1.0), product of:
             0.052876703 = queryWeight, product of:
               1.5316827 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.014271767 = queryNorm
             0.18897653 = fieldWeight in 5239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.078125 = fieldNorm(doc=5239)
         0.05673842 = weight(abstract_txt:index in 5239) [ClassicSimilarity], result of:
           0.05673842 = score(doc=5239,freq=1.0), product of:
             0.15290493 = queryWeight, product of:
               2.2556827 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.014271767 = queryNorm
             0.37106994 = fieldWeight in 5239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.078125 = fieldNorm(doc=5239)
         0.10252974 = weight(abstract_txt:modern in 5239) [ClassicSimilarity], result of:
           0.10252974 = score(doc=5239,freq=1.0), product of:
             0.22684884 = queryWeight, product of:
               2.7474864 = boost
               5.7852654 = idf(docFreq=370, maxDocs=44421)
               0.014271767 = queryNorm
             0.45197386 = fieldWeight in 5239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7852654 = idf(docFreq=370, maxDocs=44421)
               0.078125 = fieldNorm(doc=5239)
         0.19979437 = weight(abstract_txt:indexes in 5239) [ClassicSimilarity], result of:
           0.19979437 = score(doc=5239,freq=1.0), product of:
             0.44589797 = queryWeight, product of:
               5.4475346 = boost
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.014271767 = queryNorm
             0.44807196 = fieldWeight in 5239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.078125 = fieldNorm(doc=5239)
         0.321109 = weight(abstract_txt:citation in 5239) [ClassicSimilarity], result of:
           0.321109 = score(doc=5239,freq=2.0), product of:
             0.59431785 = queryWeight, product of:
               8.515543 = boost
               4.890223 = idf(docFreq=907, maxDocs=44421)
               0.014271767 = queryNorm
             0.5402984 = fieldWeight in 5239, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.890223 = idf(docFreq=907, maxDocs=44421)
               0.078125 = fieldNorm(doc=5239)
       0.28 = coord(7/25)
   

4. Weinberg, B.H.: ¬The earliest Hebrew citation indexes (1997) 0.25

   0.25021467 = sum of:
     0.25021467 = product of:
       1.2510734 = sum of:
         0.033400692 = weight(abstract_txt:knowledge in 1086) [ClassicSimilarity], result of:
           0.033400692 = score(doc=1086,freq=2.0), product of:
             0.08524396 = queryWeight, product of:
               1.684221 = boost
               3.5463927 = idf(docFreq=3480, maxDocs=44421)
               0.014271767 = queryNorm
             0.39182472 = fieldWeight in 1086, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.5463927 = idf(docFreq=3480, maxDocs=44421)
               0.078125 = fieldNorm(doc=1086)
         0.12687097 = weight(abstract_txt:index in 1086) [ClassicSimilarity], result of:
           0.12687097 = score(doc=1086,freq=5.0), product of:
             0.15290493 = queryWeight, product of:
               2.2556827 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.014271767 = queryNorm
             0.82973766 = fieldWeight in 1086, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.078125 = fieldNorm(doc=1086)
         0.10252974 = weight(abstract_txt:modern in 1086) [ClassicSimilarity], result of:
           0.10252974 = score(doc=1086,freq=1.0), product of:
             0.22684884 = queryWeight, product of:
               2.7474864 = boost
               5.7852654 = idf(docFreq=370, maxDocs=44421)
               0.014271767 = queryNorm
             0.45197386 = fieldWeight in 1086, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7852654 = idf(docFreq=370, maxDocs=44421)
               0.078125 = fieldNorm(doc=1086)
         0.34605402 = weight(abstract_txt:indexes in 1086) [ClassicSimilarity], result of:
           0.34605402 = score(doc=1086,freq=3.0), product of:
             0.44589797 = queryWeight, product of:
               5.4475346 = boost
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.014271767 = queryNorm
             0.7760834 = fieldWeight in 1086, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.078125 = fieldNorm(doc=1086)
         0.642218 = weight(abstract_txt:citation in 1086) [ClassicSimilarity], result of:
           0.642218 = score(doc=1086,freq=8.0), product of:
             0.59431785 = queryWeight, product of:
               8.515543 = boost
               4.890223 = idf(docFreq=907, maxDocs=44421)
               0.014271767 = queryNorm
             1.0805968 = fieldWeight in 1086, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               4.890223 = idf(docFreq=907, maxDocs=44421)
               0.078125 = fieldNorm(doc=1086)
       0.2 = coord(5/25)
   

5. Oppenheim, C.: Using the h-Index to rank influential British researchers in information science and librarianship (2007) 0.21

   0.21394852 = sum of:
     0.21394852 = product of:
       0.76410186 = sum of:
         0.038487878 = weight(abstract_txt:studies in 905) [ClassicSimilarity], result of:
           0.038487878 = score(doc=905,freq=2.0), product of:
             0.08184878 = queryWeight, product of:
               1.3474967 = boost
               4.25605 = idf(docFreq=1711, maxDocs=44421)
               0.014271767 = queryNorm
             0.47023153 = fieldWeight in 905, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.25605 = idf(docFreq=1711, maxDocs=44421)
               0.078125 = fieldNorm(doc=905)
         0.123104304 = weight(abstract_txt:garfield in 905) [ClassicSimilarity], result of:
           0.123104304 = score(doc=905,freq=1.0), product of:
             0.17768265 = queryWeight, product of:
               1.4038773 = boost
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.014271767 = queryNorm
             0.6928324 = fieldWeight in 905, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.078125 = fieldNorm(doc=905)
         0.1421373 = weight(abstract_txt:eugene in 905) [ClassicSimilarity], result of:
           0.1421373 = score(doc=905,freq=1.0), product of:
             0.1955547 = queryWeight, product of:
               1.4727898 = boost
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.014271767 = queryNorm
             0.7268416 = fieldWeight in 905, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.078125 = fieldNorm(doc=905)
         0.017307442 = weight(abstract_txt:information in 905) [ClassicSimilarity], result of:
           0.017307442 = score(doc=905,freq=3.0), product of:
             0.052876703 = queryWeight, product of:
               1.5316827 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.014271767 = queryNorm
             0.32731694 = fieldWeight in 905, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.078125 = fieldNorm(doc=905)
         0.11347684 = weight(abstract_txt:index in 905) [ClassicSimilarity], result of:
           0.11347684 = score(doc=905,freq=4.0), product of:
             0.15290493 = queryWeight, product of:
               2.2556827 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.014271767 = queryNorm
             0.7421399 = fieldWeight in 905, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.078125 = fieldNorm(doc=905)
         0.10252974 = weight(abstract_txt:modern in 905) [ClassicSimilarity], result of:
           0.10252974 = score(doc=905,freq=1.0), product of:
             0.22684884 = queryWeight, product of:
               2.7474864 = boost
               5.7852654 = idf(docFreq=370, maxDocs=44421)
               0.014271767 = queryNorm
             0.45197386 = fieldWeight in 905, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7852654 = idf(docFreq=370, maxDocs=44421)
               0.078125 = fieldNorm(doc=905)
         0.22705834 = weight(abstract_txt:citation in 905) [ClassicSimilarity], result of:
           0.22705834 = score(doc=905,freq=1.0), product of:
             0.59431785 = queryWeight, product of:
               8.515543 = boost
               4.890223 = idf(docFreq=907, maxDocs=44421)
               0.014271767 = queryNorm
             0.38204867 = fieldWeight in 905, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.890223 = idf(docFreq=907, maxDocs=44421)
               0.078125 = fieldNorm(doc=905)
       0.28 = coord(7/25)