Document (#43150)

Author

Chawla, D.S.

Title

Hundreds of 'predatory' journals indexed on leading scholarly database

Issue

[08.02.2021].

Source

https://www.nature.com/articles/d41586-021-00239-0

Year

2021

Series

News

Abstract

Scopus has stopped adding content from most of the flagged titles, but the analysis highlights how poor-quality science is infiltrating literature.

Content

doi: https://doi.org/10.1038/d41586-021-00239-0.

Theme

Informetrie

Object

Scopus

Similar documents (content)

1. Xia, J.; Harmon, J.L.; Connolly, K.G.; Donnelly, R.M.; Anderson, M.R.; Howard, H.A.: Who publishes in "predatory" journals? (2015) 0.20

   0.2046143 = sum of:
     0.2046143 = product of:
       0.85938007 = sum of:
         0.0107976245 = weight(abstract_txt:from in 2040) [ClassicSimilarity], result of:
           0.0107976245 = score(doc=2040,freq=2.0), product of:
             0.035359293 = queryWeight, product of:
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.012793342 = queryNorm
             0.30536878 = fieldWeight in 2040, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.078125 = fieldNorm(doc=2040)
         0.02218011 = weight(abstract_txt:most in 2040) [ClassicSimilarity], result of:
           0.02218011 = score(doc=2040,freq=1.0), product of:
             0.07198974 = queryWeight, product of:
               1.426867 = boost
               3.943693 = idf(docFreq=2328, maxDocs=44218)
               0.012793342 = queryNorm
             0.308101 = fieldWeight in 2040, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.943693 = idf(docFreq=2328, maxDocs=44218)
               0.078125 = fieldNorm(doc=2040)
         0.036426112 = weight(abstract_txt:quality in 2040) [ClassicSimilarity], result of:
           0.036426112 = score(doc=2040,freq=1.0), product of:
             0.100208215 = queryWeight, product of:
               1.6834487 = boost
               4.6528544 = idf(docFreq=1145, maxDocs=44218)
               0.012793342 = queryNorm
             0.36350426 = fieldWeight in 2040, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.6528544 = idf(docFreq=1145, maxDocs=44218)
               0.078125 = fieldNorm(doc=2040)
         0.14660196 = weight(abstract_txt:journals in 2040) [ClassicSimilarity], result of:
           0.14660196 = score(doc=2040,freq=9.0), product of:
             0.1218916 = queryWeight, product of:
               1.8566716 = boost
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.012793342 = queryNorm
             1.202724 = fieldWeight in 2040, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.078125 = fieldNorm(doc=2040)
         0.64337426 = weight(abstract_txt:predatory in 2040) [ClassicSimilarity], result of:
           0.64337426 = score(doc=2040,freq=4.0), product of:
             0.4281381 = queryWeight, product of:
               3.4796867 = boost
               9.617446 = idf(docFreq=7, maxDocs=44218)
               0.012793342 = queryNorm
             1.502726 = fieldWeight in 2040, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               9.617446 = idf(docFreq=7, maxDocs=44218)
               0.078125 = fieldNorm(doc=2040)
       0.23809524 = coord(5/21)
   

2. Meho, L.I.; Sugimoto, C.R.: Assessing the scholarly impact of information studies : a tale of two citation databases - Scopus and Web of Science (2009) 0.18

   0.17615762 = sum of:
     0.17615762 = product of:
       0.52847284 = sum of:
         0.0107976245 = weight(abstract_txt:from in 3298) [ClassicSimilarity], result of:
           0.0107976245 = score(doc=3298,freq=2.0), product of:
             0.035359293 = queryWeight, product of:
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.012793342 = queryNorm
             0.30536878 = fieldWeight in 3298, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.078125 = fieldNorm(doc=3298)
         0.029433327 = weight(abstract_txt:science in 3298) [ClassicSimilarity], result of:
           0.029433327 = score(doc=3298,freq=2.0), product of:
             0.068999246 = queryWeight, product of:
               1.3969163 = boost
               3.8609126 = idf(docFreq=2529, maxDocs=44218)
               0.012793342 = queryNorm
             0.42657462 = fieldWeight in 3298, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.8609126 = idf(docFreq=2529, maxDocs=44218)
               0.078125 = fieldNorm(doc=3298)
         0.02218011 = weight(abstract_txt:most in 3298) [ClassicSimilarity], result of:
           0.02218011 = score(doc=3298,freq=1.0), product of:
             0.07198974 = queryWeight, product of:
               1.426867 = boost
               3.943693 = idf(docFreq=2328, maxDocs=44218)
               0.012793342 = queryNorm
             0.308101 = fieldWeight in 3298, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.943693 = idf(docFreq=2328, maxDocs=44218)
               0.078125 = fieldNorm(doc=3298)
         0.0283503 = weight(abstract_txt:database in 3298) [ClassicSimilarity], result of:
           0.0283503 = score(doc=3298,freq=1.0), product of:
             0.08478777 = queryWeight, product of:
               1.5485128 = boost
               4.2799077 = idf(docFreq=1663, maxDocs=44218)
               0.012793342 = queryNorm
             0.33436778 = fieldWeight in 3298, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.2799077 = idf(docFreq=1663, maxDocs=44218)
               0.078125 = fieldNorm(doc=3298)
         0.084640674 = weight(abstract_txt:journals in 3298) [ClassicSimilarity], result of:
           0.084640674 = score(doc=3298,freq=3.0), product of:
             0.1218916 = queryWeight, product of:
               1.8566716 = boost
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.012793342 = queryNorm
             0.694393 = fieldWeight in 3298, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.078125 = fieldNorm(doc=3298)
         0.11737845 = weight(abstract_txt:scholarly in 3298) [ClassicSimilarity], result of:
           0.11737845 = score(doc=3298,freq=4.0), product of:
             0.13772106 = queryWeight, product of:
               1.9735512 = boost
               5.4546638 = idf(docFreq=513, maxDocs=44218)
               0.012793342 = queryNorm
             0.8522912 = fieldWeight in 3298, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.4546638 = idf(docFreq=513, maxDocs=44218)
               0.078125 = fieldNorm(doc=3298)
         0.23569237 = weight(abstract_txt:scopus in 3298) [ClassicSimilarity], result of:
           0.23569237 = score(doc=3298,freq=3.0), product of:
             0.24125966 = queryWeight, product of:
               2.6121047 = boost
               7.2195506 = idf(docFreq=87, maxDocs=44218)
               0.012793342 = queryNorm
             0.97692406 = fieldWeight in 3298, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.2195506 = idf(docFreq=87, maxDocs=44218)
               0.078125 = fieldNorm(doc=3298)
       0.33333334 = coord(7/21)
   

3. Leydesdorff, L.; Nooy, W. de: Can "hot spots" in the sciences be mapped using the dynamics of aggregated journal-journal citation relations (2017) 0.16

   0.15590042 = sum of:
     0.15590042 = product of:
       0.54565144 = sum of:
         0.0061080586 = weight(abstract_txt:from in 3328) [ClassicSimilarity], result of:
           0.0061080586 = score(doc=3328,freq=1.0), product of:
             0.035359293 = queryWeight, product of:
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.012793342 = queryNorm
             0.17274266 = fieldWeight in 3328, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.0625 = fieldNorm(doc=3328)
         0.014108728 = weight(abstract_txt:analysis in 3328) [ClassicSimilarity], result of:
           0.014108728 = score(doc=3328,freq=1.0), product of:
             0.061786465 = queryWeight, product of:
               1.3218887 = boost
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.012793342 = queryNorm
             0.22834657 = fieldWeight in 3328, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.0625 = fieldNorm(doc=3328)
         0.017744089 = weight(abstract_txt:most in 3328) [ClassicSimilarity], result of:
           0.017744089 = score(doc=3328,freq=1.0), product of:
             0.07198974 = queryWeight, product of:
               1.426867 = boost
               3.943693 = idf(docFreq=2328, maxDocs=44218)
               0.012793342 = queryNorm
             0.24648081 = fieldWeight in 3328, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.943693 = idf(docFreq=2328, maxDocs=44218)
               0.0625 = fieldNorm(doc=3328)
         0.02268024 = weight(abstract_txt:database in 3328) [ClassicSimilarity], result of:
           0.02268024 = score(doc=3328,freq=1.0), product of:
             0.08478777 = queryWeight, product of:
               1.5485128 = boost
               4.2799077 = idf(docFreq=1663, maxDocs=44218)
               0.012793342 = queryNorm
             0.26749423 = fieldWeight in 3328, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.2799077 = idf(docFreq=1663, maxDocs=44218)
               0.0625 = fieldNorm(doc=3328)
         0.087416515 = weight(abstract_txt:journals in 3328) [ClassicSimilarity], result of:
           0.087416515 = score(doc=3328,freq=5.0), product of:
             0.1218916 = queryWeight, product of:
               1.8566716 = boost
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.012793342 = queryNorm
             0.717166 = fieldWeight in 3328, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.0625 = fieldNorm(doc=3328)
         0.3975938 = weight(abstract_txt:flagged in 3328) [ClassicSimilarity], result of:
           0.3975938 = score(doc=3328,freq=2.0), product of:
             0.45413455 = queryWeight, product of:
               3.583773 = boost
               9.905128 = idf(docFreq=5, maxDocs=44218)
               0.012793342 = queryNorm
             0.8754978 = fieldWeight in 3328, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.905128 = idf(docFreq=5, maxDocs=44218)
               0.0625 = fieldNorm(doc=3328)
       0.2857143 = coord(6/21)
   

4. Haider, J.; Bawden, D.: Conceptions of "information poverty" in LIS : a discourse analysis (2007) 0.14

   0.14094698 = sum of:
     0.14094698 = product of:
       0.36998582 = sum of:
         0.0061080586 = weight(abstract_txt:from in 607) [ClassicSimilarity], result of:
           0.0061080586 = score(doc=607,freq=1.0), product of:
             0.035359293 = queryWeight, product of:
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.012793342 = queryNorm
             0.17274266 = fieldWeight in 607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.0625 = fieldNorm(doc=607)
         0.02443703 = weight(abstract_txt:analysis in 607) [ClassicSimilarity], result of:
           0.02443703 = score(doc=607,freq=3.0), product of:
             0.061786465 = queryWeight, product of:
               1.3218887 = boost
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.012793342 = queryNorm
             0.39550784 = fieldWeight in 607, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.0625 = fieldNorm(doc=607)
         0.016650004 = weight(abstract_txt:science in 607) [ClassicSimilarity], result of:
           0.016650004 = score(doc=607,freq=1.0), product of:
             0.068999246 = queryWeight, product of:
               1.3969163 = boost
               3.8609126 = idf(docFreq=2529, maxDocs=44218)
               0.012793342 = queryNorm
             0.24130704 = fieldWeight in 607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8609126 = idf(docFreq=2529, maxDocs=44218)
               0.0625 = fieldNorm(doc=607)
         0.017744089 = weight(abstract_txt:most in 607) [ClassicSimilarity], result of:
           0.017744089 = score(doc=607,freq=1.0), product of:
             0.07198974 = queryWeight, product of:
               1.426867 = boost
               3.943693 = idf(docFreq=2328, maxDocs=44218)
               0.012793342 = queryNorm
             0.24648081 = fieldWeight in 607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.943693 = idf(docFreq=2328, maxDocs=44218)
               0.0625 = fieldNorm(doc=607)
         0.039093856 = weight(abstract_txt:journals in 607) [ClassicSimilarity], result of:
           0.039093856 = score(doc=607,freq=1.0), product of:
             0.1218916 = queryWeight, product of:
               1.8566716 = boost
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.012793342 = queryNorm
             0.3207264 = fieldWeight in 607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.0625 = fieldNorm(doc=607)
         0.059625115 = weight(abstract_txt:leading in 607) [ClassicSimilarity], result of:
           0.059625115 = score(doc=607,freq=1.0), product of:
             0.16150561 = queryWeight, product of:
               2.1371844 = boost
               5.906927 = idf(docFreq=326, maxDocs=44218)
               0.012793342 = queryNorm
             0.36918294 = fieldWeight in 607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.906927 = idf(docFreq=326, maxDocs=44218)
               0.0625 = fieldNorm(doc=607)
         0.071375564 = weight(abstract_txt:highlights in 607) [ClassicSimilarity], result of:
           0.071375564 = score(doc=607,freq=1.0), product of:
             0.18208234 = queryWeight, product of:
               2.2692487 = boost
               6.2719374 = idf(docFreq=226, maxDocs=44218)
               0.012793342 = queryNorm
             0.3919961 = fieldWeight in 607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2719374 = idf(docFreq=226, maxDocs=44218)
               0.0625 = fieldNorm(doc=607)
         0.13495208 = weight(abstract_txt:poor in 607) [ClassicSimilarity], result of:
           0.13495208 = score(doc=607,freq=2.0), product of:
             0.2209757 = queryWeight, product of:
               2.4998875 = boost
               6.9093957 = idf(docFreq=119, maxDocs=44218)
               0.012793342 = queryNorm
             0.6107101 = fieldWeight in 607, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.9093957 = idf(docFreq=119, maxDocs=44218)
               0.0625 = fieldNorm(doc=607)
       0.3809524 = coord(8/21)
   

5. Kousha, K.; Thelwall, M.; Abdoli, M.: ¬The role of online videos in research communication : a content analysis of YouTube videos cited in academic publications (2012) 0.14

   0.13880247 = sum of:
     0.13880247 = product of:
       0.36435646 = sum of:
         0.008638099 = weight(abstract_txt:from in 382) [ClassicSimilarity], result of:
           0.008638099 = score(doc=382,freq=2.0), product of:
             0.035359293 = queryWeight, product of:
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.012793342 = queryNorm
             0.24429502 = fieldWeight in 382, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.0625 = fieldNorm(doc=382)
         0.014108728 = weight(abstract_txt:analysis in 382) [ClassicSimilarity], result of:
           0.014108728 = score(doc=382,freq=1.0), product of:
             0.061786465 = queryWeight, product of:
               1.3218887 = boost
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.012793342 = queryNorm
             0.22834657 = fieldWeight in 382, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.0625 = fieldNorm(doc=382)
         0.016650004 = weight(abstract_txt:science in 382) [ClassicSimilarity], result of:
           0.016650004 = score(doc=382,freq=1.0), product of:
             0.068999246 = queryWeight, product of:
               1.3969163 = boost
               3.8609126 = idf(docFreq=2529, maxDocs=44218)
               0.012793342 = queryNorm
             0.24130704 = fieldWeight in 382, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8609126 = idf(docFreq=2529, maxDocs=44218)
               0.0625 = fieldNorm(doc=382)
         0.017744089 = weight(abstract_txt:most in 382) [ClassicSimilarity], result of:
           0.017744089 = score(doc=382,freq=1.0), product of:
             0.07198974 = queryWeight, product of:
               1.426867 = boost
               3.943693 = idf(docFreq=2328, maxDocs=44218)
               0.012793342 = queryNorm
             0.24648081 = fieldWeight in 382, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.943693 = idf(docFreq=2328, maxDocs=44218)
               0.0625 = fieldNorm(doc=382)
         0.021127362 = weight(abstract_txt:content in 382) [ClassicSimilarity], result of:
           0.021127362 = score(doc=382,freq=1.0), product of:
             0.08087202 = queryWeight, product of:
               1.5123327 = boost
               4.17991 = idf(docFreq=1838, maxDocs=44218)
               0.012793342 = queryNorm
             0.2612444 = fieldWeight in 382, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.17991 = idf(docFreq=1838, maxDocs=44218)
               0.0625 = fieldNorm(doc=382)
         0.066399276 = weight(abstract_txt:scholarly in 382) [ClassicSimilarity], result of:
           0.066399276 = score(doc=382,freq=2.0), product of:
             0.13772106 = queryWeight, product of:
               1.9735512 = boost
               5.4546638 = idf(docFreq=513, maxDocs=44218)
               0.012793342 = queryNorm
             0.4821287 = fieldWeight in 382, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4546638 = idf(docFreq=513, maxDocs=44218)
               0.0625 = fieldNorm(doc=382)
         0.06573529 = weight(abstract_txt:indexed in 382) [ClassicSimilarity], result of:
           0.06573529 = score(doc=382,freq=1.0), product of:
             0.17235895 = queryWeight, product of:
               2.2078273 = boost
               6.1021757 = idf(docFreq=268, maxDocs=44218)
               0.012793342 = queryNorm
             0.38138598 = fieldWeight in 382, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.1021757 = idf(docFreq=268, maxDocs=44218)
               0.0625 = fieldNorm(doc=382)
         0.15395363 = weight(abstract_txt:scopus in 382) [ClassicSimilarity], result of:
           0.15395363 = score(doc=382,freq=2.0), product of:
             0.24125966 = queryWeight, product of:
               2.6121047 = boost
               7.2195506 = idf(docFreq=87, maxDocs=44218)
               0.012793342 = queryNorm
             0.63812417 = fieldWeight in 382, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.2195506 = idf(docFreq=87, maxDocs=44218)
               0.0625 = fieldNorm(doc=382)
       0.3809524 = coord(8/21)