Document (#31837)

Author
Roberts, D.
Souter, C.
Title
¬The automation of controlled vocabulary subject indexing of medical journal articles
Source
Aslib proceedings. 52(2000) no.10, S.384-401
Year
2000
Abstract
This article discusses the possibility of the automation of sophisticated subject indexing of medical journal articles. Approaches to subject descriptor assignment in information retrieval research are usually either based upon the manual descriptors in the database or generation of search parameters from the text of the article. The principles of the Medline indexing system are described, followed by a summary of a pilot project, based upon the Amed database. The results suggest that a more extended study, based upon Medline, should encompass various components: Extraction of 'concept strings' from titles and abstracts of records, based upon linguistic features characteristic of medical literature. Use of the Unified Medical Language System (UMLS) for identification of controlled vocabulary descriptors. Coordination of descriptors, utilising features of the Medline indexing system. The emphasis should be on system manipulation of data, based upon input, available resources and specifically designed rules.
Theme
Automatisches Indexieren
Field
Medizin

Similar documents (author)

  1. Roberts, N.: ¬An examination of the personality concept and its relevance to the Colon Classification scheme (1969) 5.38
    5.3815155 = sum of:
      5.3815155 = weight(author_txt:roberts in 2003) [ClassicSimilarity], result of:
        5.3815155 = fieldWeight in 2003, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.610425 = idf(docFreq=21, maxDocs=44421)
          0.625 = fieldNorm(doc=2003)
    
  2. Roberts, S.: Towards a pocket library (1992) 5.38
    5.3815155 = sum of:
      5.3815155 = weight(author_txt:roberts in 3310) [ClassicSimilarity], result of:
        5.3815155 = fieldWeight in 3310, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.610425 = idf(docFreq=21, maxDocs=44421)
          0.625 = fieldNorm(doc=3310)
    
  3. Roberts, D.: Knowledge creation by information retrieval (1990) 5.38
    5.3815155 = sum of:
      5.3815155 = weight(author_txt:roberts in 3872) [ClassicSimilarity], result of:
        5.3815155 = fieldWeight in 3872, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.610425 = idf(docFreq=21, maxDocs=44421)
          0.625 = fieldNorm(doc=3872)
    
  4. Roberts, N.: Historical studies in documentation : the pre-history of the information retrieval thesaurus (1984) 5.38
    5.3815155 = sum of:
      5.3815155 = weight(author_txt:roberts in 5139) [ClassicSimilarity], result of:
        5.3815155 = fieldWeight in 5139, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.610425 = idf(docFreq=21, maxDocs=44421)
          0.625 = fieldNorm(doc=5139)
    
  5. Roberts, R.: Microsoft Encarta Multimedia Encyclopedia (1993) 5.38
    5.3815155 = sum of:
      5.3815155 = weight(author_txt:roberts in 6723) [ClassicSimilarity], result of:
        5.3815155 = fieldWeight in 6723, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.610425 = idf(docFreq=21, maxDocs=44421)
          0.625 = fieldNorm(doc=6723)
    

Similar documents (content)

  1. Humphrey, S.M.; Névéol, A.; Browne, A.; Gobeil, J.; Ruch, P.; Darmoni, S.J.: Comparing a rule-based versus statistical system for automatic categorization of MEDLINE documents according to biomedical specialty (2009) 0.35
    0.3454278 = sum of:
      0.3454278 = product of:
        0.8635695 = sum of:
          0.07748584 = weight(abstract_txt:descriptor in 287) [ClassicSimilarity], result of:
            0.07748584 = score(doc=287,freq=1.0), product of:
              0.15916069 = queryWeight, product of:
                1.1225126 = boost
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.018202797 = queryNorm
              0.48684028 = fieldWeight in 287, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.0625 = fieldNorm(doc=287)
          0.06309077 = weight(abstract_txt:journal in 287) [ClassicSimilarity], result of:
            0.06309077 = score(doc=287,freq=2.0), product of:
              0.13878147 = queryWeight, product of:
                1.4823612 = boost
                5.14327 = idf(docFreq=704, maxDocs=44421)
                0.018202797 = queryNorm
              0.45460513 = fieldWeight in 287, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.14327 = idf(docFreq=704, maxDocs=44421)
                0.0625 = fieldNorm(doc=287)
          0.050523862 = weight(abstract_txt:vocabulary in 287) [ClassicSimilarity], result of:
            0.050523862 = score(doc=287,freq=1.0), product of:
              0.15078633 = queryWeight, product of:
                1.5451452 = boost
                5.3611083 = idf(docFreq=566, maxDocs=44421)
                0.018202797 = queryNorm
              0.33506927 = fieldWeight in 287, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3611083 = idf(docFreq=566, maxDocs=44421)
                0.0625 = fieldNorm(doc=287)
          0.05312257 = weight(abstract_txt:controlled in 287) [ClassicSimilarity], result of:
            0.05312257 = score(doc=287,freq=1.0), product of:
              0.15591347 = queryWeight, product of:
                1.5711951 = boost
                5.4514923 = idf(docFreq=517, maxDocs=44421)
                0.018202797 = queryNorm
              0.34071827 = fieldWeight in 287, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4514923 = idf(docFreq=517, maxDocs=44421)
                0.0625 = fieldNorm(doc=287)
          0.029399233 = weight(abstract_txt:subject in 287) [ClassicSimilarity], result of:
            0.029399233 = score(doc=287,freq=1.0), product of:
              0.12030546 = queryWeight, product of:
                1.6903499 = boost
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.018202797 = queryNorm
              0.24437155 = fieldWeight in 287, 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=287)
          0.05287417 = weight(abstract_txt:based in 287) [ClassicSimilarity], result of:
            0.05287417 = score(doc=287,freq=4.0), product of:
              0.13288827 = queryWeight, product of:
                2.2935152 = boost
                3.1830752 = idf(docFreq=5005, maxDocs=44421)
                0.018202797 = queryNorm
              0.3978844 = fieldWeight in 287, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.1830752 = idf(docFreq=5005, maxDocs=44421)
                0.0625 = fieldNorm(doc=287)
          0.10798247 = weight(abstract_txt:indexing in 287) [ClassicSimilarity], result of:
            0.10798247 = score(doc=287,freq=4.0), product of:
              0.19857433 = queryWeight, product of:
                2.507638 = boost
                4.3503094 = idf(docFreq=1557, maxDocs=44421)
                0.018202797 = queryNorm
              0.5437887 = fieldWeight in 287, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.3503094 = idf(docFreq=1557, maxDocs=44421)
                0.0625 = fieldNorm(doc=287)
          0.14558941 = weight(abstract_txt:descriptors in 287) [ClassicSimilarity], result of:
            0.14558941 = score(doc=287,freq=1.0), product of:
              0.3495274 = queryWeight, product of:
                2.8812075 = boost
                6.664515 = idf(docFreq=153, maxDocs=44421)
                0.018202797 = queryNorm
              0.4165322 = fieldWeight in 287, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.664515 = idf(docFreq=153, maxDocs=44421)
                0.0625 = fieldNorm(doc=287)
          0.154898 = weight(abstract_txt:medline in 287) [ClassicSimilarity], result of:
            0.154898 = score(doc=287,freq=1.0), product of:
              0.36427155 = queryWeight, product of:
                2.941349 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.018202797 = queryNorm
              0.42522675 = fieldWeight in 287, 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=287)
          0.12860318 = weight(abstract_txt:medical in 287) [ClassicSimilarity], result of:
            0.12860318 = score(doc=287,freq=1.0), product of:
              0.35416752 = queryWeight, product of:
                3.3489423 = boost
                5.8098235 = idf(docFreq=361, maxDocs=44421)
                0.018202797 = queryNorm
              0.36311397 = fieldWeight in 287, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.8098235 = idf(docFreq=361, maxDocs=44421)
                0.0625 = fieldNorm(doc=287)
        0.4 = coord(10/25)
    
  2. Humphrey, S.M.; Rogers, W.J.; Kilicoglu, H.; Demner-Fushman, D.; Rindflesch, T.C.: Word sense disambiguation by selecting the best semantic type based on journal descriptor indexing : preliminary experiment (2006) 0.31
    0.31341317 = sum of:
      0.31341317 = product of:
        0.7835329 = sum of:
          0.05654338 = weight(abstract_txt:strings in 5912) [ClassicSimilarity], result of:
            0.05654338 = score(doc=5912,freq=1.0), product of:
              0.14101654 = queryWeight, product of:
                1.0565945 = boost
                7.33202 = idf(docFreq=78, maxDocs=44421)
                0.018202797 = queryNorm
              0.40096983 = fieldWeight in 5912, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.33202 = idf(docFreq=78, maxDocs=44421)
                0.0546875 = fieldNorm(doc=5912)
          0.067800105 = weight(abstract_txt:descriptor in 5912) [ClassicSimilarity], result of:
            0.067800105 = score(doc=5912,freq=1.0), product of:
              0.15916069 = queryWeight, product of:
                1.1225126 = boost
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.018202797 = queryNorm
              0.42598525 = fieldWeight in 5912, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.0546875 = fieldNorm(doc=5912)
          0.11743924 = weight(abstract_txt:umls in 5912) [ClassicSimilarity], result of:
            0.11743924 = score(doc=5912,freq=2.0), product of:
              0.18219973 = queryWeight, product of:
                1.2010115 = boost
                8.334172 = idf(docFreq=28, maxDocs=44421)
                0.018202797 = queryNorm
              0.6445632 = fieldWeight in 5912, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.334172 = idf(docFreq=28, maxDocs=44421)
                0.0546875 = fieldNorm(doc=5912)
          0.055204425 = weight(abstract_txt:journal in 5912) [ClassicSimilarity], result of:
            0.055204425 = score(doc=5912,freq=2.0), product of:
              0.13878147 = queryWeight, product of:
                1.4823612 = boost
                5.14327 = idf(docFreq=704, maxDocs=44421)
                0.018202797 = queryNorm
              0.3977795 = fieldWeight in 5912, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.14327 = idf(docFreq=704, maxDocs=44421)
                0.0546875 = fieldNorm(doc=5912)
          0.031134939 = weight(abstract_txt:system in 5912) [ClassicSimilarity], result of:
            0.031134939 = score(doc=5912,freq=2.0), product of:
              0.119359665 = queryWeight, product of:
                1.9441603 = boost
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.018202797 = queryNorm
              0.26084974 = fieldWeight in 5912, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.0546875 = fieldNorm(doc=5912)
          0.03271422 = weight(abstract_txt:based in 5912) [ClassicSimilarity], result of:
            0.03271422 = score(doc=5912,freq=2.0), product of:
              0.13288827 = queryWeight, product of:
                2.2935152 = boost
                3.1830752 = idf(docFreq=5005, maxDocs=44421)
                0.018202797 = queryNorm
              0.24617839 = fieldWeight in 5912, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1830752 = idf(docFreq=5005, maxDocs=44421)
                0.0546875 = fieldNorm(doc=5912)
          0.047242332 = weight(abstract_txt:indexing in 5912) [ClassicSimilarity], result of:
            0.047242332 = score(doc=5912,freq=1.0), product of:
              0.19857433 = queryWeight, product of:
                2.507638 = boost
                4.3503094 = idf(docFreq=1557, maxDocs=44421)
                0.018202797 = queryNorm
              0.23790754 = fieldWeight in 5912, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3503094 = idf(docFreq=1557, maxDocs=44421)
                0.0546875 = fieldNorm(doc=5912)
          0.12739073 = weight(abstract_txt:descriptors in 5912) [ClassicSimilarity], result of:
            0.12739073 = score(doc=5912,freq=1.0), product of:
              0.3495274 = queryWeight, product of:
                2.8812075 = boost
                6.664515 = idf(docFreq=153, maxDocs=44421)
                0.018202797 = queryNorm
              0.36446565 = fieldWeight in 5912, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.664515 = idf(docFreq=153, maxDocs=44421)
                0.0546875 = fieldNorm(doc=5912)
          0.13553576 = weight(abstract_txt:medline in 5912) [ClassicSimilarity], result of:
            0.13553576 = score(doc=5912,freq=1.0), product of:
              0.36427155 = queryWeight, product of:
                2.941349 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.018202797 = queryNorm
              0.3720734 = fieldWeight in 5912, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.0546875 = fieldNorm(doc=5912)
          0.11252778 = weight(abstract_txt:medical in 5912) [ClassicSimilarity], result of:
            0.11252778 = score(doc=5912,freq=1.0), product of:
              0.35416752 = queryWeight, product of:
                3.3489423 = boost
                5.8098235 = idf(docFreq=361, maxDocs=44421)
                0.018202797 = queryNorm
              0.31772473 = fieldWeight in 5912, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.8098235 = idf(docFreq=361, maxDocs=44421)
                0.0546875 = fieldNorm(doc=5912)
        0.4 = coord(10/25)
    
  3. Humphrey, S.M.: Knowledge-based systems for indexing (1994) 0.31
    0.30651018 = sum of:
      0.30651018 = product of:
        0.9578444 = sum of:
          0.038601853 = weight(abstract_txt:database in 3055) [ClassicSimilarity], result of:
            0.038601853 = score(doc=3055,freq=1.0), product of:
              0.096170574 = queryWeight, product of:
                1.2339836 = boost
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.018202797 = queryNorm
              0.40138945 = fieldWeight in 3055, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.09375 = fieldNorm(doc=3055)
          0.07578579 = weight(abstract_txt:vocabulary in 3055) [ClassicSimilarity], result of:
            0.07578579 = score(doc=3055,freq=1.0), product of:
              0.15078633 = queryWeight, product of:
                1.5451452 = boost
                5.3611083 = idf(docFreq=566, maxDocs=44421)
                0.018202797 = queryNorm
              0.5026039 = fieldWeight in 3055, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3611083 = idf(docFreq=566, maxDocs=44421)
                0.09375 = fieldNorm(doc=3055)
          0.079683855 = weight(abstract_txt:controlled in 3055) [ClassicSimilarity], result of:
            0.079683855 = score(doc=3055,freq=1.0), product of:
              0.15591347 = queryWeight, product of:
                1.5711951 = boost
                5.4514923 = idf(docFreq=517, maxDocs=44421)
                0.018202797 = queryNorm
              0.5110774 = fieldWeight in 3055, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4514923 = idf(docFreq=517, maxDocs=44421)
                0.09375 = fieldNorm(doc=3055)
          0.053374182 = weight(abstract_txt:system in 3055) [ClassicSimilarity], result of:
            0.053374182 = score(doc=3055,freq=2.0), product of:
              0.119359665 = queryWeight, product of:
                1.9441603 = boost
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.018202797 = queryNorm
              0.447171 = fieldWeight in 3055, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.09375 = fieldNorm(doc=3055)
          0.056081522 = weight(abstract_txt:based in 3055) [ClassicSimilarity], result of:
            0.056081522 = score(doc=3055,freq=2.0), product of:
              0.13288827 = queryWeight, product of:
                2.2935152 = boost
                3.1830752 = idf(docFreq=5005, maxDocs=44421)
                0.018202797 = queryNorm
              0.4220201 = fieldWeight in 3055, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1830752 = idf(docFreq=5005, maxDocs=44421)
                0.09375 = fieldNorm(doc=3055)
          0.2290654 = weight(abstract_txt:indexing in 3055) [ClassicSimilarity], result of:
            0.2290654 = score(doc=3055,freq=8.0), product of:
              0.19857433 = queryWeight, product of:
                2.507638 = boost
                4.3503094 = idf(docFreq=1557, maxDocs=44421)
                0.018202797 = queryNorm
              1.1535499 = fieldWeight in 3055, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                4.3503094 = idf(docFreq=1557, maxDocs=44421)
                0.09375 = fieldNorm(doc=3055)
          0.23234703 = weight(abstract_txt:medline in 3055) [ClassicSimilarity], result of:
            0.23234703 = score(doc=3055,freq=1.0), product of:
              0.36427155 = queryWeight, product of:
                2.941349 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.018202797 = queryNorm
              0.63784015 = fieldWeight in 3055, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.09375 = fieldNorm(doc=3055)
          0.19290476 = weight(abstract_txt:medical in 3055) [ClassicSimilarity], result of:
            0.19290476 = score(doc=3055,freq=1.0), product of:
              0.35416752 = queryWeight, product of:
                3.3489423 = boost
                5.8098235 = idf(docFreq=361, maxDocs=44421)
                0.018202797 = queryNorm
              0.54467094 = fieldWeight in 3055, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.8098235 = idf(docFreq=361, maxDocs=44421)
                0.09375 = fieldNorm(doc=3055)
        0.32 = coord(8/25)
    
  4. Rae, A.R.; Mork, J.G.; Demner-Fushman, D.: ¬The National Library of Medicine indexer assignment dataset : a new large-scale dataset for reviewer assignment research (2023) 0.30
    0.3036559 = sum of:
      0.3036559 = product of:
        0.8434886 = sum of:
          0.122499324 = weight(abstract_txt:assignment in 1886) [ClassicSimilarity], result of:
            0.122499324 = score(doc=1886,freq=5.0), product of:
              0.12631455 = queryWeight, product of:
                6.939294 = idf(docFreq=116, maxDocs=44421)
                0.018202797 = queryNorm
              0.9697958 = fieldWeight in 1886, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.939294 = idf(docFreq=116, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.03114737 = weight(abstract_txt:article in 1886) [ClassicSimilarity], result of:
            0.03114737 = score(doc=1886,freq=3.0), product of:
              0.07573061 = queryWeight, product of:
                1.095025 = boost
                3.79935 = idf(docFreq=2702, maxDocs=44421)
                0.018202797 = queryNorm
              0.4112917 = fieldWeight in 1886, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.79935 = idf(docFreq=2702, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.036394175 = weight(abstract_txt:database in 1886) [ClassicSimilarity], result of:
            0.036394175 = score(doc=1886,freq=2.0), product of:
              0.096170574 = queryWeight, product of:
                1.2339836 = boost
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.018202797 = queryNorm
              0.3784336 = fieldWeight in 1886, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.087708205 = weight(abstract_txt:articles in 1886) [ClassicSimilarity], result of:
            0.087708205 = score(doc=1886,freq=6.0), product of:
              0.11985992 = queryWeight, product of:
                1.3776069 = boost
                4.7798095 = idf(docFreq=1013, maxDocs=44421)
                0.018202797 = queryNorm
              0.7317559 = fieldWeight in 1886, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.7798095 = idf(docFreq=1013, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.06309077 = weight(abstract_txt:journal in 1886) [ClassicSimilarity], result of:
            0.06309077 = score(doc=1886,freq=2.0), product of:
              0.13878147 = queryWeight, product of:
                1.4823612 = boost
                5.14327 = idf(docFreq=704, maxDocs=44421)
                0.018202797 = queryNorm
              0.45460513 = fieldWeight in 1886, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.14327 = idf(docFreq=704, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.029399233 = weight(abstract_txt:subject in 1886) [ClassicSimilarity], result of:
            0.029399233 = score(doc=1886,freq=1.0), product of:
              0.12030546 = queryWeight, product of:
                1.6903499 = boost
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.018202797 = queryNorm
              0.24437155 = fieldWeight in 1886, 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=1886)
          0.07635514 = weight(abstract_txt:indexing in 1886) [ClassicSimilarity], result of:
            0.07635514 = score(doc=1886,freq=2.0), product of:
              0.19857433 = queryWeight, product of:
                2.507638 = boost
                4.3503094 = idf(docFreq=1557, maxDocs=44421)
                0.018202797 = queryNorm
              0.38451666 = fieldWeight in 1886, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.3503094 = idf(docFreq=1557, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.2682912 = weight(abstract_txt:medline in 1886) [ClassicSimilarity], result of:
            0.2682912 = score(doc=1886,freq=3.0), product of:
              0.36427155 = queryWeight, product of:
                2.941349 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.018202797 = queryNorm
              0.73651433 = fieldWeight in 1886, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.12860318 = weight(abstract_txt:medical in 1886) [ClassicSimilarity], result of:
            0.12860318 = score(doc=1886,freq=1.0), product of:
              0.35416752 = queryWeight, product of:
                3.3489423 = boost
                5.8098235 = idf(docFreq=361, maxDocs=44421)
                0.018202797 = queryNorm
              0.36311397 = fieldWeight in 1886, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.8098235 = idf(docFreq=361, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
        0.36 = coord(9/25)
    
  5. Rotolo, D.; Leydesdorff, L.: Matching Medline/PubMed data with Web of Science: A routine in R language (2015) 0.28
    0.27818894 = sum of:
      0.27818894 = product of:
        0.77274704 = sum of:
          0.03216821 = weight(abstract_txt:database in 3224) [ClassicSimilarity], result of:
            0.03216821 = score(doc=3224,freq=1.0), product of:
              0.096170574 = queryWeight, product of:
                1.2339836 = boost
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.018202797 = queryNorm
              0.3344912 = fieldWeight in 3224, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.078125 = fieldNorm(doc=3224)
          0.03566101 = weight(abstract_txt:should in 3224) [ClassicSimilarity], result of:
            0.03566101 = score(doc=3224,freq=1.0), product of:
              0.10301173 = queryWeight, product of:
                1.2771198 = boost
                4.4311547 = idf(docFreq=1436, maxDocs=44421)
                0.018202797 = queryNorm
              0.34618396 = fieldWeight in 3224, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4311547 = idf(docFreq=1436, maxDocs=44421)
                0.078125 = fieldNorm(doc=3224)
          0.05576489 = weight(abstract_txt:journal in 3224) [ClassicSimilarity], result of:
            0.05576489 = score(doc=3224,freq=1.0), product of:
              0.13878147 = queryWeight, product of:
                1.4823612 = boost
                5.14327 = idf(docFreq=704, maxDocs=44421)
                0.018202797 = queryNorm
              0.40181798 = fieldWeight in 3224, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.14327 = idf(docFreq=704, maxDocs=44421)
                0.078125 = fieldNorm(doc=3224)
          0.06315483 = weight(abstract_txt:vocabulary in 3224) [ClassicSimilarity], result of:
            0.06315483 = score(doc=3224,freq=1.0), product of:
              0.15078633 = queryWeight, product of:
                1.5451452 = boost
                5.3611083 = idf(docFreq=566, maxDocs=44421)
                0.018202797 = queryNorm
              0.4188366 = fieldWeight in 3224, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3611083 = idf(docFreq=566, maxDocs=44421)
                0.078125 = fieldNorm(doc=3224)
          0.06640321 = weight(abstract_txt:controlled in 3224) [ClassicSimilarity], result of:
            0.06640321 = score(doc=3224,freq=1.0), product of:
              0.15591347 = queryWeight, product of:
                1.5711951 = boost
                5.4514923 = idf(docFreq=517, maxDocs=44421)
                0.018202797 = queryNorm
              0.42589784 = fieldWeight in 3224, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4514923 = idf(docFreq=517, maxDocs=44421)
                0.078125 = fieldNorm(doc=3224)
          0.05197099 = weight(abstract_txt:subject in 3224) [ClassicSimilarity], result of:
            0.05197099 = score(doc=3224,freq=2.0), product of:
              0.12030546 = queryWeight, product of:
                1.6903499 = boost
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.018202797 = queryNorm
              0.43199193 = fieldWeight in 3224, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.078125 = fieldNorm(doc=3224)
          0.033046357 = weight(abstract_txt:based in 3224) [ClassicSimilarity], result of:
            0.033046357 = score(doc=3224,freq=1.0), product of:
              0.13288827 = queryWeight, product of:
                2.2935152 = boost
                3.1830752 = idf(docFreq=5005, maxDocs=44421)
                0.018202797 = queryNorm
              0.24867775 = fieldWeight in 3224, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1830752 = idf(docFreq=5005, maxDocs=44421)
                0.078125 = fieldNorm(doc=3224)
          0.2738236 = weight(abstract_txt:medline in 3224) [ClassicSimilarity], result of:
            0.2738236 = score(doc=3224,freq=2.0), product of:
              0.36427155 = queryWeight, product of:
                2.941349 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.018202797 = queryNorm
              0.75170183 = fieldWeight in 3224, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.078125 = fieldNorm(doc=3224)
          0.16075397 = weight(abstract_txt:medical in 3224) [ClassicSimilarity], result of:
            0.16075397 = score(doc=3224,freq=1.0), product of:
              0.35416752 = queryWeight, product of:
                3.3489423 = boost
                5.8098235 = idf(docFreq=361, maxDocs=44421)
                0.018202797 = queryNorm
              0.45389247 = fieldWeight in 3224, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.8098235 = idf(docFreq=361, maxDocs=44421)
                0.078125 = fieldNorm(doc=3224)
        0.36 = coord(9/25)