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

   2.0921192 = sum of:
     2.0921192 = product of:
       3.1381786 = sum of:
         1.54009 = weight(author_txt:araújo in 3863) [ClassicSimilarity], result of:
           1.54009 = score(doc=3863,freq=1.0), product of:
             0.64848197 = queryWeight, product of:
               1.321963 = boost
               9.499662 = idf(docFreq=8, maxDocs=44218)
               0.051638123 = queryNorm
             2.3749156 = fieldWeight in 3863, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.499662 = idf(docFreq=8, maxDocs=44218)
               0.25 = fieldNorm(doc=3863)
         1.5980886 = weight(author_txt:castanha in 3863) [ClassicSimilarity], result of:
           1.5980886 = score(doc=3863,freq=1.0), product of:
             0.66466236 = queryWeight, product of:
               1.3383536 = boost
               9.617446 = idf(docFreq=7, maxDocs=44218)
               0.051638123 = queryNorm
             2.4043615 = fieldWeight in 3863, 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=3863)
       0.6666667 = coord(2/3)
   

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

   1.3183558 = sum of:
     1.3183558 = product of:
       3.9550674 = sum of:
         3.9550674 = weight(author_txt:castanha in 3856) [ClassicSimilarity], result of:
           3.9550674 = score(doc=3856,freq=2.0), product of:
             0.66466236 = queryWeight, product of:
               1.3383536 = boost
               9.617446 = idf(docFreq=7, maxDocs=44218)
               0.051638123 = queryNorm
             5.950491 = fieldWeight in 3856, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.617446 = idf(docFreq=7, maxDocs=44218)
               0.4375 = fieldNorm(doc=3856)
       0.33333334 = coord(1/3)
   

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

   1.1300193 = sum of:
     1.1300193 = product of:
       3.3900578 = sum of:
         3.3900578 = weight(author_txt:castanha in 228) [ClassicSimilarity], result of:
           3.3900578 = score(doc=228,freq=2.0), product of:
             0.66466236 = queryWeight, product of:
               1.3383536 = boost
               9.617446 = idf(docFreq=7, maxDocs=44218)
               0.051638123 = queryNorm
             5.100421 = fieldWeight in 228, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.617446 = idf(docFreq=7, maxDocs=44218)
               0.375 = fieldNorm(doc=228)
       0.33333334 = coord(1/3)
   

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

   1.0890081 = sum of:
     1.0890081 = product of:
       3.267024 = sum of:
         3.267024 = weight(author_txt:araújo in 5445) [ClassicSimilarity], result of:
           3.267024 = score(doc=5445,freq=2.0), product of:
             0.64848197 = queryWeight, product of:
               1.321963 = boost
               9.499662 = idf(docFreq=8, maxDocs=44218)
               0.051638123 = queryNorm
             5.0379567 = fieldWeight in 5445, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.499662 = idf(docFreq=8, maxDocs=44218)
               0.375 = fieldNorm(doc=5445)
       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

   1.0653925 = sum of:
     1.0653925 = product of:
       3.1961772 = sum of:
         3.1961772 = weight(author_txt:castanha in 4150) [ClassicSimilarity], result of:
           3.1961772 = score(doc=4150,freq=1.0), product of:
             0.66466236 = queryWeight, product of:
               1.3383536 = boost
               9.617446 = idf(docFreq=7, maxDocs=44218)
               0.051638123 = queryNorm
             4.808723 = fieldWeight in 4150, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.617446 = idf(docFreq=7, maxDocs=44218)
               0.5 = fieldNorm(doc=4150)
       0.33333334 = coord(1/3)
   

Similar documents (content)

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

   0.34876204 = sum of:
     0.34876204 = product of:
       1.0898814 = sum of:
         0.03507116 = weight(abstract_txt:scholar in 3632) [ClassicSimilarity], result of:
           0.03507116 = score(doc=3632,freq=1.0), product of:
             0.108022355 = queryWeight, product of:
               1.0940294 = boost
               6.926203 = idf(docFreq=117, maxDocs=44218)
               0.014255729 = queryNorm
             0.32466576 = fieldWeight in 3632, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.926203 = idf(docFreq=117, maxDocs=44218)
               0.046875 = fieldNorm(doc=3632)
         0.065253645 = weight(abstract_txt:1955 in 3632) [ClassicSimilarity], result of:
           0.065253645 = score(doc=3632,freq=1.0), product of:
             0.1634118 = queryWeight, product of:
               1.3455936 = boost
               8.518833 = idf(docFreq=23, maxDocs=44218)
               0.014255729 = queryNorm
             0.3993203 = fieldWeight in 3632, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.518833 = idf(docFreq=23, maxDocs=44218)
               0.046875 = fieldNorm(doc=3632)
         0.103949115 = weight(abstract_txt:garfield in 3632) [ClassicSimilarity], result of:
           0.103949115 = score(doc=3632,freq=2.0), product of:
             0.17690933 = queryWeight, product of:
               1.4000629 = boost
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.014255729 = queryNorm
             0.58758414 = fieldWeight in 3632, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.046875 = fieldNorm(doc=3632)
         0.084873505 = weight(abstract_txt:eugene in 3632) [ClassicSimilarity], result of:
           0.084873505 = score(doc=3632,freq=1.0), product of:
             0.19471301 = queryWeight, product of:
               1.4688237 = boost
               9.298992 = idf(docFreq=10, maxDocs=44218)
               0.014255729 = queryNorm
             0.43589026 = fieldWeight in 3632, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.298992 = idf(docFreq=10, maxDocs=44218)
               0.046875 = fieldNorm(doc=3632)
         0.008472176 = weight(abstract_txt:information in 3632) [ClassicSimilarity], result of:
           0.008472176 = score(doc=3632,freq=2.0), product of:
             0.052790225 = queryWeight, product of:
               1.5296037 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.014255729 = queryNorm
             0.16048759 = fieldWeight in 3632, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.046875 = fieldNorm(doc=3632)
         0.10174189 = weight(abstract_txt:index in 3632) [ClassicSimilarity], result of:
           0.10174189 = score(doc=3632,freq=9.0), product of:
             0.15234901 = queryWeight, product of:
               2.2503633 = boost
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.014255729 = queryNorm
             0.6678211 = fieldWeight in 3632, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.046875 = fieldNorm(doc=3632)
         0.23838449 = weight(abstract_txt:indexes in 3632) [ClassicSimilarity], result of:
           0.23838449 = score(doc=3632,freq=4.0), product of:
             0.44370666 = queryWeight, product of:
               5.4312 = boost
               5.7307405 = idf(docFreq=389, maxDocs=44218)
               0.014255729 = queryNorm
             0.53725696 = fieldWeight in 3632, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.7307405 = idf(docFreq=389, maxDocs=44218)
               0.046875 = fieldNorm(doc=3632)
         0.45213547 = weight(abstract_txt:citation in 3632) [ClassicSimilarity], result of:
           0.45213547 = score(doc=3632,freq=11.0), product of:
             0.59391725 = queryWeight, product of:
               8.508079 = boost
               4.896717 = idf(docFreq=897, maxDocs=44218)
               0.014255729 = queryNorm
             0.7612769 = fieldWeight in 3632, product of:
               3.3166249 = tf(freq=11.0), with freq of:
                 11.0 = termFreq=11.0
               4.896717 = idf(docFreq=897, maxDocs=44218)
               0.046875 = fieldNorm(doc=3632)
       0.32 = coord(8/25)
   

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

   0.34187052 = sum of:
     0.34187052 = product of:
       1.2209661 = sum of:
         0.027352955 = weight(abstract_txt:studies in 6896) [ClassicSimilarity], result of:
           0.027352955 = score(doc=6896,freq=1.0), product of:
             0.082034 = queryWeight, product of:
               1.3482925 = boost
               4.26796 = idf(docFreq=1683, maxDocs=44218)
               0.014255729 = queryNorm
             0.33343437 = fieldWeight in 6896, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.26796 = idf(docFreq=1683, maxDocs=44218)
               0.078125 = fieldNorm(doc=6896)
         0.17324851 = weight(abstract_txt:garfield in 6896) [ClassicSimilarity], result of:
           0.17324851 = score(doc=6896,freq=2.0), product of:
             0.17690933 = queryWeight, product of:
               1.4000629 = boost
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.014255729 = queryNorm
             0.9793068 = fieldWeight in 6896, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.078125 = fieldNorm(doc=6896)
         0.14145584 = weight(abstract_txt:eugene in 6896) [ClassicSimilarity], result of:
           0.14145584 = score(doc=6896,freq=1.0), product of:
             0.19471301 = queryWeight, product of:
               1.4688237 = boost
               9.298992 = idf(docFreq=10, maxDocs=44218)
               0.014255729 = queryNorm
             0.72648376 = fieldWeight in 6896, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.298992 = idf(docFreq=10, maxDocs=44218)
               0.078125 = fieldNorm(doc=6896)
         0.009984555 = weight(abstract_txt:information in 6896) [ClassicSimilarity], result of:
           0.009984555 = score(doc=6896,freq=1.0), product of:
             0.052790225 = queryWeight, product of:
               1.5296037 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.014255729 = queryNorm
             0.18913643 = fieldWeight in 6896, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.078125 = fieldNorm(doc=6896)
         0.07993597 = weight(abstract_txt:index in 6896) [ClassicSimilarity], result of:
           0.07993597 = score(doc=6896,freq=2.0), product of:
             0.15234901 = queryWeight, product of:
               2.2503633 = boost
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.014255729 = queryNorm
             0.5246898 = fieldWeight in 6896, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.078125 = fieldNorm(doc=6896)
         0.2809388 = weight(abstract_txt:indexes in 6896) [ClassicSimilarity], result of:
           0.2809388 = score(doc=6896,freq=2.0), product of:
             0.44370666 = queryWeight, product of:
               5.4312 = boost
               5.7307405 = idf(docFreq=389, maxDocs=44218)
               0.014255729 = queryNorm
             0.6331634 = fieldWeight in 6896, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.7307405 = idf(docFreq=389, maxDocs=44218)
               0.078125 = fieldNorm(doc=6896)
         0.5080495 = weight(abstract_txt:citation in 6896) [ClassicSimilarity], result of:
           0.5080495 = score(doc=6896,freq=5.0), product of:
             0.59391725 = queryWeight, product of:
               8.508079 = boost
               4.896717 = idf(docFreq=897, maxDocs=44218)
               0.014255729 = queryNorm
             0.8554213 = fieldWeight in 6896, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.896717 = idf(docFreq=897, maxDocs=44218)
               0.078125 = fieldNorm(doc=6896)
       0.28 = coord(7/25)
   

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

   0.26682946 = sum of:
     0.26682946 = product of:
       0.9529624 = sum of:
         0.1225052 = weight(abstract_txt:garfield in 4239) [ClassicSimilarity], result of:
           0.1225052 = score(doc=4239,freq=1.0), product of:
             0.17690933 = queryWeight, product of:
               1.4000629 = boost
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.014255729 = queryNorm
             0.69247454 = fieldWeight in 4239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.078125 = fieldNorm(doc=4239)
         0.14145584 = weight(abstract_txt:eugene in 4239) [ClassicSimilarity], result of:
           0.14145584 = score(doc=4239,freq=1.0), product of:
             0.19471301 = queryWeight, product of:
               1.4688237 = boost
               9.298992 = idf(docFreq=10, maxDocs=44218)
               0.014255729 = queryNorm
             0.72648376 = fieldWeight in 4239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.298992 = idf(docFreq=10, maxDocs=44218)
               0.078125 = fieldNorm(doc=4239)
         0.009984555 = weight(abstract_txt:information in 4239) [ClassicSimilarity], result of:
           0.009984555 = score(doc=4239,freq=1.0), product of:
             0.052790225 = queryWeight, product of:
               1.5296037 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.014255729 = queryNorm
             0.18913643 = fieldWeight in 4239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.078125 = fieldNorm(doc=4239)
         0.05652327 = weight(abstract_txt:index in 4239) [ClassicSimilarity], result of:
           0.05652327 = score(doc=4239,freq=1.0), product of:
             0.15234901 = queryWeight, product of:
               2.2503633 = boost
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.014255729 = queryNorm
             0.37101173 = fieldWeight in 4239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.078125 = fieldNorm(doc=4239)
         0.10252113 = weight(abstract_txt:modern in 4239) [ClassicSimilarity], result of:
           0.10252113 = score(doc=4239,freq=1.0), product of:
             0.2265846 = queryWeight, product of:
               2.7444038 = boost
               5.7915254 = idf(docFreq=366, maxDocs=44218)
               0.014255729 = queryNorm
             0.4524629 = fieldWeight in 4239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7915254 = idf(docFreq=366, maxDocs=44218)
               0.078125 = fieldNorm(doc=4239)
         0.19865373 = weight(abstract_txt:indexes in 4239) [ClassicSimilarity], result of:
           0.19865373 = score(doc=4239,freq=1.0), product of:
             0.44370666 = queryWeight, product of:
               5.4312 = boost
               5.7307405 = idf(docFreq=389, maxDocs=44218)
               0.014255729 = queryNorm
             0.4477141 = fieldWeight in 4239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7307405 = idf(docFreq=389, maxDocs=44218)
               0.078125 = fieldNorm(doc=4239)
         0.3213187 = weight(abstract_txt:citation in 4239) [ClassicSimilarity], result of:
           0.3213187 = score(doc=4239,freq=2.0), product of:
             0.59391725 = queryWeight, product of:
               8.508079 = boost
               4.896717 = idf(docFreq=897, maxDocs=44218)
               0.014255729 = queryNorm
             0.5410159 = fieldWeight in 4239, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.896717 = idf(docFreq=897, maxDocs=44218)
               0.078125 = fieldNorm(doc=4239)
       0.28 = coord(7/25)
   

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

   0.24981938 = sum of:
     0.24981938 = product of:
       1.2490969 = sum of:
         0.03347015 = weight(abstract_txt:knowledge in 86) [ClassicSimilarity], result of:
           0.03347015 = score(doc=86,freq=2.0), product of:
             0.08526744 = queryWeight, product of:
               1.6835438 = boost
               3.5527887 = idf(docFreq=3442, maxDocs=44218)
               0.014255729 = queryNorm
             0.39253142 = fieldWeight in 86, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.5527887 = idf(docFreq=3442, maxDocs=44218)
               0.078125 = fieldNorm(doc=86)
         0.12638988 = weight(abstract_txt:index in 86) [ClassicSimilarity], result of:
           0.12638988 = score(doc=86,freq=5.0), product of:
             0.15234901 = queryWeight, product of:
               2.2503633 = boost
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.014255729 = queryNorm
             0.8296075 = fieldWeight in 86, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.078125 = fieldNorm(doc=86)
         0.10252113 = weight(abstract_txt:modern in 86) [ClassicSimilarity], result of:
           0.10252113 = score(doc=86,freq=1.0), product of:
             0.2265846 = queryWeight, product of:
               2.7444038 = boost
               5.7915254 = idf(docFreq=366, maxDocs=44218)
               0.014255729 = queryNorm
             0.4524629 = fieldWeight in 86, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7915254 = idf(docFreq=366, maxDocs=44218)
               0.078125 = fieldNorm(doc=86)
         0.34407836 = weight(abstract_txt:indexes in 86) [ClassicSimilarity], result of:
           0.34407836 = score(doc=86,freq=3.0), product of:
             0.44370666 = queryWeight, product of:
               5.4312 = boost
               5.7307405 = idf(docFreq=389, maxDocs=44218)
               0.014255729 = queryNorm
             0.7754636 = fieldWeight in 86, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.7307405 = idf(docFreq=389, maxDocs=44218)
               0.078125 = fieldNorm(doc=86)
         0.6426374 = weight(abstract_txt:citation in 86) [ClassicSimilarity], result of:
           0.6426374 = score(doc=86,freq=8.0), product of:
             0.59391725 = queryWeight, product of:
               8.508079 = boost
               4.896717 = idf(docFreq=897, maxDocs=44218)
               0.014255729 = queryNorm
             1.0820318 = fieldWeight in 86, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               4.896717 = idf(docFreq=897, maxDocs=44218)
               0.078125 = fieldNorm(doc=86)
       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

   0.21355936 = sum of:
     0.21355936 = product of:
       0.762712 = sum of:
         0.038682923 = weight(abstract_txt:studies in 780) [ClassicSimilarity], result of:
           0.038682923 = score(doc=780,freq=2.0), product of:
             0.082034 = queryWeight, product of:
               1.3482925 = boost
               4.26796 = idf(docFreq=1683, maxDocs=44218)
               0.014255729 = queryNorm
             0.47154742 = fieldWeight in 780, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.26796 = idf(docFreq=1683, maxDocs=44218)
               0.078125 = fieldNorm(doc=780)
         0.1225052 = weight(abstract_txt:garfield in 780) [ClassicSimilarity], result of:
           0.1225052 = score(doc=780,freq=1.0), product of:
             0.17690933 = queryWeight, product of:
               1.4000629 = boost
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.014255729 = queryNorm
             0.69247454 = fieldWeight in 780, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.078125 = fieldNorm(doc=780)
         0.14145584 = weight(abstract_txt:eugene in 780) [ClassicSimilarity], result of:
           0.14145584 = score(doc=780,freq=1.0), product of:
             0.19471301 = queryWeight, product of:
               1.4688237 = boost
               9.298992 = idf(docFreq=10, maxDocs=44218)
               0.014255729 = queryNorm
             0.72648376 = fieldWeight in 780, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.298992 = idf(docFreq=10, maxDocs=44218)
               0.078125 = fieldNorm(doc=780)
         0.017293757 = weight(abstract_txt:information in 780) [ClassicSimilarity], result of:
           0.017293757 = score(doc=780,freq=3.0), product of:
             0.052790225 = queryWeight, product of:
               1.5296037 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.014255729 = queryNorm
             0.32759392 = fieldWeight in 780, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.078125 = fieldNorm(doc=780)
         0.11304654 = weight(abstract_txt:index in 780) [ClassicSimilarity], result of:
           0.11304654 = score(doc=780,freq=4.0), product of:
             0.15234901 = queryWeight, product of:
               2.2503633 = boost
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.014255729 = queryNorm
             0.74202347 = fieldWeight in 780, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.078125 = fieldNorm(doc=780)
         0.10252113 = weight(abstract_txt:modern in 780) [ClassicSimilarity], result of:
           0.10252113 = score(doc=780,freq=1.0), product of:
             0.2265846 = queryWeight, product of:
               2.7444038 = boost
               5.7915254 = idf(docFreq=366, maxDocs=44218)
               0.014255729 = queryNorm
             0.4524629 = fieldWeight in 780, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7915254 = idf(docFreq=366, maxDocs=44218)
               0.078125 = fieldNorm(doc=780)
         0.22720662 = weight(abstract_txt:citation in 780) [ClassicSimilarity], result of:
           0.22720662 = score(doc=780,freq=1.0), product of:
             0.59391725 = queryWeight, product of:
               8.508079 = boost
               4.896717 = idf(docFreq=897, maxDocs=44218)
               0.014255729 = queryNorm
             0.38255602 = fieldWeight in 780, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.896717 = idf(docFreq=897, maxDocs=44218)
               0.078125 = fieldNorm(doc=780)
       0.28 = coord(7/25)