Document (#38728)

Author
Onodera, N.
Yoshikane, F.
Title
Factors affecting citation rates of research articles
Source
Journal of the Association for Information Science and Technology. 66(2015) no.4, S.739-764
Year
2015
Abstract
This study examines whether there are some general trends across subject fields regarding the factors affecting the number of citations of articles, focusing especially on those factors that are not directly related to the quality or content of articles (extrinsic factors). For this purpose, from 6 selected subject fields (condensed matter physics, inorganic and nuclear chemistry, electric and electronic engineering, biochemistry and molecular biology, physiology, and gastroenterology), original articles published in the same year were sampled (n?=?230-240 for each field). Then, the citation counts received by the articles in relatively long citation windows (6 and 11 years after publication) were predicted by negative binomial multiple regression (NBMR) analysis for each field. Various article features about author collaboration, cited references, visibility, authors' achievements (measured by past publications and citedness), and publishing journals were considered as the explanatory variables of NBMR. Some generality across the fields was found with regard to the selected predicting factors and the degree of significance of these predictors. The Price index was the strongest predictor of citations, and number of references was the next. The effects of number of authors and authors' achievement measures were rather weak.
Content
Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23209/abstract.
Theme
Informetrie

Similar documents (content)

  1. Baumgartner, S.E.; Leydesdorff, L.: Group-based trajectory modeling (GBTM) of citations in scholarly literature : dynamic qualities of "transient" and "sticky knowledge claims" (2014) 0.34
    0.33728364 = sum of:
      0.33728364 = product of:
        0.76655376 = sum of:
          0.09648108 = weight(abstract_txt:predictor in 1241) [ClassicSimilarity], result of:
            0.09648108 = score(doc=1241,freq=1.0), product of:
              0.18454939 = queryWeight, product of:
                1.012318 = boost
                8.364683 = idf(docFreq=27, maxDocs=44218)
                0.021794463 = queryNorm
              0.5227927 = fieldWeight in 1241, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.364683 = idf(docFreq=27, maxDocs=44218)
                0.0625 = fieldNorm(doc=1241)
          0.042262617 = weight(abstract_txt:field in 1241) [ClassicSimilarity], result of:
            0.042262617 = score(doc=1241,freq=2.0), product of:
              0.10644423 = queryWeight, product of:
                1.0872684 = boost
                4.491995 = idf(docFreq=1345, maxDocs=44218)
                0.021794463 = queryNorm
              0.39704 = fieldWeight in 1241, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.491995 = idf(docFreq=1345, maxDocs=44218)
                0.0625 = fieldNorm(doc=1241)
          0.043658808 = weight(abstract_txt:across in 1241) [ClassicSimilarity], result of:
            0.043658808 = score(doc=1241,freq=1.0), product of:
              0.13704897 = queryWeight, product of:
                1.2337114 = boost
                5.097017 = idf(docFreq=734, maxDocs=44218)
                0.021794463 = queryNorm
              0.31856355 = fieldWeight in 1241, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.097017 = idf(docFreq=734, maxDocs=44218)
                0.0625 = fieldNorm(doc=1241)
          0.07096258 = weight(abstract_txt:citations in 1241) [ClassicSimilarity], result of:
            0.07096258 = score(doc=1241,freq=2.0), product of:
              0.15037332 = queryWeight, product of:
                1.2922932 = boost
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.021794463 = queryNorm
              0.47190937 = fieldWeight in 1241, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.0625 = fieldNorm(doc=1241)
          0.034906033 = weight(abstract_txt:number in 1241) [ClassicSimilarity], result of:
            0.034906033 = score(doc=1241,freq=1.0), product of:
              0.1351425 = queryWeight, product of:
                1.5004354 = boost
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.021794463 = queryNorm
              0.25829056 = fieldWeight in 1241, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.0625 = fieldNorm(doc=1241)
          0.049676806 = weight(abstract_txt:authors in 1241) [ClassicSimilarity], result of:
            0.049676806 = score(doc=1241,freq=1.0), product of:
              0.17098607 = queryWeight, product of:
                1.687725 = boost
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.021794463 = queryNorm
              0.2905313 = fieldWeight in 1241, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.0625 = fieldNorm(doc=1241)
          0.032596763 = weight(abstract_txt:were in 1241) [ClassicSimilarity], result of:
            0.032596763 = score(doc=1241,freq=1.0), product of:
              0.14210875 = queryWeight, product of:
                1.7766467 = boost
                3.6700637 = idf(docFreq=3061, maxDocs=44218)
                0.021794463 = queryNorm
              0.22937898 = fieldWeight in 1241, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6700637 = idf(docFreq=3061, maxDocs=44218)
                0.0625 = fieldNorm(doc=1241)
          0.14223471 = weight(abstract_txt:citation in 1241) [ClassicSimilarity], result of:
            0.14223471 = score(doc=1241,freq=6.0), product of:
              0.1897339 = queryWeight, product of:
                1.7778444 = boost
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.021794463 = queryNorm
              0.7496537 = fieldWeight in 1241, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.0625 = fieldNorm(doc=1241)
          0.062984034 = weight(abstract_txt:fields in 1241) [ClassicSimilarity], result of:
            0.062984034 = score(doc=1241,freq=1.0), product of:
              0.20029892 = queryWeight, product of:
                1.8266721 = boost
                5.0312033 = idf(docFreq=784, maxDocs=44218)
                0.021794463 = queryNorm
              0.3144502 = fieldWeight in 1241, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0312033 = idf(docFreq=784, maxDocs=44218)
                0.0625 = fieldNorm(doc=1241)
          0.09014363 = weight(abstract_txt:articles in 1241) [ClassicSimilarity], result of:
            0.09014363 = score(doc=1241,freq=1.0), product of:
              0.30159992 = queryWeight, product of:
                2.8937516 = boost
                4.7821565 = idf(docFreq=1006, maxDocs=44218)
                0.021794463 = queryNorm
              0.29888478 = fieldWeight in 1241, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7821565 = idf(docFreq=1006, maxDocs=44218)
                0.0625 = fieldNorm(doc=1241)
          0.10064669 = weight(abstract_txt:factors in 1241) [ClassicSimilarity], result of:
            0.10064669 = score(doc=1241,freq=1.0), product of:
              0.3245943 = queryWeight, product of:
                3.0020375 = boost
                4.9611073 = idf(docFreq=841, maxDocs=44218)
                0.021794463 = queryNorm
              0.3100692 = fieldWeight in 1241, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9611073 = idf(docFreq=841, maxDocs=44218)
                0.0625 = fieldNorm(doc=1241)
        0.44 = coord(11/25)
    
  2. Didegah, F.; Thelwall, M.: Determinants of research citation impact in nanoscience and nanotechnology (2013) 0.26
    0.25971124 = sum of:
      0.25971124 = product of:
        0.81159765 = sum of:
          0.12060135 = weight(abstract_txt:predictor in 737) [ClassicSimilarity], result of:
            0.12060135 = score(doc=737,freq=1.0), product of:
              0.18454939 = queryWeight, product of:
                1.012318 = boost
                8.364683 = idf(docFreq=27, maxDocs=44218)
                0.021794463 = queryNorm
              0.6534909 = fieldWeight in 737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.364683 = idf(docFreq=27, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.13347752 = weight(abstract_txt:binomial in 737) [ClassicSimilarity], result of:
            0.13347752 = score(doc=737,freq=1.0), product of:
              0.19746187 = queryWeight, product of:
                1.047134 = boost
                8.652365 = idf(docFreq=20, maxDocs=44218)
                0.021794463 = queryNorm
              0.675966 = fieldWeight in 737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.652365 = idf(docFreq=20, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.06272265 = weight(abstract_txt:citations in 737) [ClassicSimilarity], result of:
            0.06272265 = score(doc=737,freq=1.0), product of:
              0.15037332 = queryWeight, product of:
                1.2922932 = boost
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.021794463 = queryNorm
              0.4171129 = fieldWeight in 737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.161931 = weight(abstract_txt:references in 737) [ClassicSimilarity], result of:
            0.161931 = score(doc=737,freq=5.0), product of:
              0.16549486 = queryWeight, product of:
                1.3557135 = boost
                5.601063 = idf(docFreq=443, maxDocs=44218)
                0.021794463 = queryNorm
              0.9784654 = fieldWeight in 737, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.601063 = idf(docFreq=443, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.06170573 = weight(abstract_txt:number in 737) [ClassicSimilarity], result of:
            0.06170573 = score(doc=737,freq=2.0), product of:
              0.1351425 = queryWeight, product of:
                1.5004354 = boost
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.021794463 = queryNorm
              0.4565975 = fieldWeight in 737, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.08781702 = weight(abstract_txt:authors in 737) [ClassicSimilarity], result of:
            0.08781702 = score(doc=737,freq=2.0), product of:
              0.17098607 = queryWeight, product of:
                1.687725 = boost
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.021794463 = queryNorm
              0.51359165 = fieldWeight in 737, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.057623476 = weight(abstract_txt:were in 737) [ClassicSimilarity], result of:
            0.057623476 = score(doc=737,freq=2.0), product of:
              0.14210875 = queryWeight, product of:
                1.7766467 = boost
                3.6700637 = idf(docFreq=3061, maxDocs=44218)
                0.021794463 = queryNorm
              0.40548858 = fieldWeight in 737, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6700637 = idf(docFreq=3061, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.12571889 = weight(abstract_txt:citation in 737) [ClassicSimilarity], result of:
            0.12571889 = score(doc=737,freq=3.0), product of:
              0.1897339 = queryWeight, product of:
                1.7778444 = boost
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.021794463 = queryNorm
              0.6626064 = fieldWeight in 737, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
        0.32 = coord(8/25)
    
  3. Shah, T.A.; Gul, S.; Gaur, R.C.: Authors self-citation behaviour in the field of Library and Information Science (2015) 0.24
    0.23965184 = sum of:
      0.23965184 = product of:
        0.66569954 = sum of:
          0.026414137 = weight(abstract_txt:field in 2597) [ClassicSimilarity], result of:
            0.026414137 = score(doc=2597,freq=2.0), product of:
              0.10644423 = queryWeight, product of:
                1.0872684 = boost
                4.491995 = idf(docFreq=1345, maxDocs=44218)
                0.021794463 = queryNorm
              0.24815 = fieldWeight in 2597, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.491995 = idf(docFreq=1345, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2597)
          0.029517619 = weight(abstract_txt:selected in 2597) [ClassicSimilarity], result of:
            0.029517619 = score(doc=2597,freq=1.0), product of:
              0.14442046 = queryWeight, product of:
                1.2664558 = boost
                5.232299 = idf(docFreq=641, maxDocs=44218)
                0.021794463 = queryNorm
              0.20438668 = fieldWeight in 2597, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.232299 = idf(docFreq=641, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2597)
          0.1214619 = weight(abstract_txt:citations in 2597) [ClassicSimilarity], result of:
            0.1214619 = score(doc=2597,freq=15.0), product of:
              0.15037332 = queryWeight, product of:
                1.2922932 = boost
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.021794463 = queryNorm
              0.8077357 = fieldWeight in 2597, product of:
                3.8729835 = tf(freq=15.0), with freq of:
                  15.0 = termFreq=15.0
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2597)
          0.053438734 = weight(abstract_txt:number in 2597) [ClassicSimilarity], result of:
            0.053438734 = score(doc=2597,freq=6.0), product of:
              0.1351425 = queryWeight, product of:
                1.5004354 = boost
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.021794463 = queryNorm
              0.39542508 = fieldWeight in 2597, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2597)
          0.093144014 = weight(abstract_txt:authors in 2597) [ClassicSimilarity], result of:
            0.093144014 = score(doc=2597,freq=9.0), product of:
              0.17098607 = queryWeight, product of:
                1.687725 = boost
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.021794463 = queryNorm
              0.5447462 = fieldWeight in 2597, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2597)
          0.03528703 = weight(abstract_txt:were in 2597) [ClassicSimilarity], result of:
            0.03528703 = score(doc=2597,freq=3.0), product of:
              0.14210875 = queryWeight, product of:
                1.7766467 = boost
                3.6700637 = idf(docFreq=3061, maxDocs=44218)
                0.021794463 = queryNorm
              0.24831003 = fieldWeight in 2597, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6700637 = idf(docFreq=3061, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2597)
          0.13085239 = weight(abstract_txt:citation in 2597) [ClassicSimilarity], result of:
            0.13085239 = score(doc=2597,freq=13.0), product of:
              0.1897339 = queryWeight, product of:
                1.7778444 = boost
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.021794463 = queryNorm
              0.6896627 = fieldWeight in 2597, product of:
                3.6055512 = tf(freq=13.0), with freq of:
                  13.0 = termFreq=13.0
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2597)
          0.112679526 = weight(abstract_txt:articles in 2597) [ClassicSimilarity], result of:
            0.112679526 = score(doc=2597,freq=4.0), product of:
              0.30159992 = queryWeight, product of:
                2.8937516 = boost
                4.7821565 = idf(docFreq=1006, maxDocs=44218)
                0.021794463 = queryNorm
              0.37360597 = fieldWeight in 2597, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.7821565 = idf(docFreq=1006, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2597)
          0.06290419 = weight(abstract_txt:factors in 2597) [ClassicSimilarity], result of:
            0.06290419 = score(doc=2597,freq=1.0), product of:
              0.3245943 = queryWeight, product of:
                3.0020375 = boost
                4.9611073 = idf(docFreq=841, maxDocs=44218)
                0.021794463 = queryNorm
              0.19379325 = fieldWeight in 2597, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9611073 = idf(docFreq=841, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2597)
        0.36 = coord(9/25)
    
  4. Moed, H.F.: ¬The effect of "open access" on citation impact : an analysis of ArXiv's condensed matter section (2007) 0.23
    0.22557576 = sum of:
      0.22557576 = product of:
        0.7049243 = sum of:
          0.1739948 = weight(abstract_txt:condensed in 621) [ClassicSimilarity], result of:
            0.1739948 = score(doc=621,freq=3.0), product of:
              0.18958397 = queryWeight, product of:
                1.0260333 = boost
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.021794463 = queryNorm
              0.91777164 = fieldWeight in 621, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.0625 = fieldNorm(doc=621)
          0.029884184 = weight(abstract_txt:field in 621) [ClassicSimilarity], result of:
            0.029884184 = score(doc=621,freq=1.0), product of:
              0.10644423 = queryWeight, product of:
                1.0872684 = boost
                4.491995 = idf(docFreq=1345, maxDocs=44218)
                0.021794463 = queryNorm
              0.28074968 = fieldWeight in 621, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.491995 = idf(docFreq=1345, maxDocs=44218)
                0.0625 = fieldNorm(doc=621)
          0.034906033 = weight(abstract_txt:number in 621) [ClassicSimilarity], result of:
            0.034906033 = score(doc=621,freq=1.0), product of:
              0.1351425 = queryWeight, product of:
                1.5004354 = boost
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.021794463 = queryNorm
              0.25829056 = fieldWeight in 621, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.0625 = fieldNorm(doc=621)
          0.049676806 = weight(abstract_txt:authors in 621) [ClassicSimilarity], result of:
            0.049676806 = score(doc=621,freq=1.0), product of:
              0.17098607 = queryWeight, product of:
                1.687725 = boost
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.021794463 = queryNorm
              0.2905313 = fieldWeight in 621, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.0625 = fieldNorm(doc=621)
          0.04609878 = weight(abstract_txt:were in 621) [ClassicSimilarity], result of:
            0.04609878 = score(doc=621,freq=2.0), product of:
              0.14210875 = queryWeight, product of:
                1.7766467 = boost
                3.6700637 = idf(docFreq=3061, maxDocs=44218)
                0.021794463 = queryNorm
              0.32439086 = fieldWeight in 621, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6700637 = idf(docFreq=3061, maxDocs=44218)
                0.0625 = fieldNorm(doc=621)
          0.14223471 = weight(abstract_txt:citation in 621) [ClassicSimilarity], result of:
            0.14223471 = score(doc=621,freq=6.0), product of:
              0.1897339 = queryWeight, product of:
                1.7778444 = boost
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.021794463 = queryNorm
              0.7496537 = fieldWeight in 621, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.0625 = fieldNorm(doc=621)
          0.12748234 = weight(abstract_txt:articles in 621) [ClassicSimilarity], result of:
            0.12748234 = score(doc=621,freq=2.0), product of:
              0.30159992 = queryWeight, product of:
                2.8937516 = boost
                4.7821565 = idf(docFreq=1006, maxDocs=44218)
                0.021794463 = queryNorm
              0.4226869 = fieldWeight in 621, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7821565 = idf(docFreq=1006, maxDocs=44218)
                0.0625 = fieldNorm(doc=621)
          0.10064669 = weight(abstract_txt:factors in 621) [ClassicSimilarity], result of:
            0.10064669 = score(doc=621,freq=1.0), product of:
              0.3245943 = queryWeight, product of:
                3.0020375 = boost
                4.9611073 = idf(docFreq=841, maxDocs=44218)
                0.021794463 = queryNorm
              0.3100692 = fieldWeight in 621, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9611073 = idf(docFreq=841, maxDocs=44218)
                0.0625 = fieldNorm(doc=621)
        0.32 = coord(8/25)
    
  5. Campanario, J.M.: Large increases and decreases in journal impact factors in only one year : the effect of journal self-citations (2011) 0.22
    0.21843882 = sum of:
      0.21843882 = product of:
        0.7801386 = sum of:
          0.07084228 = weight(abstract_txt:selected in 4187) [ClassicSimilarity], result of:
            0.07084228 = score(doc=4187,freq=1.0), product of:
              0.14442046 = queryWeight, product of:
                1.2664558 = boost
                5.232299 = idf(docFreq=641, maxDocs=44218)
                0.021794463 = queryNorm
              0.49052802 = fieldWeight in 4187, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.232299 = idf(docFreq=641, maxDocs=44218)
                0.09375 = fieldNorm(doc=4187)
          0.15053438 = weight(abstract_txt:citations in 4187) [ClassicSimilarity], result of:
            0.15053438 = score(doc=4187,freq=4.0), product of:
              0.15037332 = queryWeight, product of:
                1.2922932 = boost
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.021794463 = queryNorm
              1.001071 = fieldWeight in 4187, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.09375 = fieldNorm(doc=4187)
          0.07404688 = weight(abstract_txt:number in 4187) [ClassicSimilarity], result of:
            0.07404688 = score(doc=4187,freq=2.0), product of:
              0.1351425 = queryWeight, product of:
                1.5004354 = boost
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.021794463 = queryNorm
              0.547917 = fieldWeight in 4187, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.09375 = fieldNorm(doc=4187)
          0.04889514 = weight(abstract_txt:were in 4187) [ClassicSimilarity], result of:
            0.04889514 = score(doc=4187,freq=1.0), product of:
              0.14210875 = queryWeight, product of:
                1.7766467 = boost
                3.6700637 = idf(docFreq=3061, maxDocs=44218)
                0.021794463 = queryNorm
              0.34406847 = fieldWeight in 4187, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6700637 = idf(docFreq=3061, maxDocs=44218)
                0.09375 = fieldNorm(doc=4187)
          0.08710061 = weight(abstract_txt:citation in 4187) [ClassicSimilarity], result of:
            0.08710061 = score(doc=4187,freq=1.0), product of:
              0.1897339 = queryWeight, product of:
                1.7778444 = boost
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.021794463 = queryNorm
              0.45906723 = fieldWeight in 4187, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.09375 = fieldNorm(doc=4187)
          0.13521545 = weight(abstract_txt:articles in 4187) [ClassicSimilarity], result of:
            0.13521545 = score(doc=4187,freq=1.0), product of:
              0.30159992 = queryWeight, product of:
                2.8937516 = boost
                4.7821565 = idf(docFreq=1006, maxDocs=44218)
                0.021794463 = queryNorm
              0.44832718 = fieldWeight in 4187, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7821565 = idf(docFreq=1006, maxDocs=44218)
                0.09375 = fieldNorm(doc=4187)
          0.21350387 = weight(abstract_txt:factors in 4187) [ClassicSimilarity], result of:
            0.21350387 = score(doc=4187,freq=2.0), product of:
              0.3245943 = queryWeight, product of:
                3.0020375 = boost
                4.9611073 = idf(docFreq=841, maxDocs=44218)
                0.021794463 = queryNorm
              0.6577561 = fieldWeight in 4187, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.9611073 = idf(docFreq=841, maxDocs=44218)
                0.09375 = fieldNorm(doc=4187)
        0.28 = coord(7/25)