Document (#31943)

Author

Rousseau, R.

Title

Journal evaluation : technical and practical issues

Source

Library trends. 50(2002) no.3, S.418-439

Year

2002

Abstract

This essay provides an overview of journal evaluation indicators. It highlights the strengths and weaknesses of different indicators, together with their range of applicability. The definition of a "quality journal," different notions of impact factors, the meaning of ranking journals, and possible biases in citation databases are also discussed. Attention is given to using the journal impact in evaluation studies. The quality of a journal is a multifaceted notion. Journals can be evaluated for different purposes, and hence the results of such evaluation exercises can be quite different depending on the indicator(s) used. The impact factor, in one of its versions, is probably the most used indicator when it comes to gauging the visibility of a journal on the research front. Generalized impact factors, over periods longer than the traditional two years, are better indicators for the long-term value of a journal. As with all evaluation studies, care must be exercised when considering journal impact factors as a quality indicator. It seems best to use a whole battery of indicators (including several impact factors) and to change this group of indicators depending on the purpose of the evaluation study. Nowadays it goes without saying that special attention is paid to e-journals and specific indicators for this type of journal.

Footnote

Artikel in einem Themenheft "Current theory in library and information science"

Theme

Informetrie

Similar documents (author)

1. Rousseau, S.; Rousseau, R.: Metric-wiseness (2015) 5.34

   5.3376956 = sum of:
     5.3376956 = weight(author_txt:rousseau in 70) [ClassicSimilarity], result of:
       5.3376956 = fieldWeight in 70, product of:
         1.4142135 = tf(freq=2.0), with freq of:
           2.0 = termFreq=2.0
         7.5486417 = idf(docFreq=60, maxDocs=42596)
         0.5 = fieldNorm(doc=70)
   

2. Rousseau, S.; Rousseau, R.: Interactions between journal attributes and authors' willingness to wait for editorial decisions (2012) 5.34

   5.3376956 = sum of:
     5.3376956 = weight(author_txt:rousseau in 1251) [ClassicSimilarity], result of:
       5.3376956 = fieldWeight in 1251, product of:
         1.4142135 = tf(freq=2.0), with freq of:
           2.0 = termFreq=2.0
         7.5486417 = idf(docFreq=60, maxDocs=42596)
         0.5 = fieldNorm(doc=1251)
   

3. Rousseau, R.: Use of an existing thesaurus in a knowledge based indexing and retrieval system (1991) 4.72

   4.717901 = sum of:
     4.717901 = weight(author_txt:rousseau in 3007) [ClassicSimilarity], result of:
       4.717901 = fieldWeight in 3007, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.5486417 = idf(docFreq=60, maxDocs=42596)
         0.625 = fieldNorm(doc=3007)
   

4. Rousseau, R.: ¬A table for estimating the exponent in Lotka's law (1993) 4.72

   4.717901 = sum of:
     4.717901 = weight(author_txt:rousseau in 5653) [ClassicSimilarity], result of:
       4.717901 = fieldWeight in 5653, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.5486417 = idf(docFreq=60, maxDocs=42596)
         0.625 = fieldNorm(doc=5653)
   

5. Rousseau, R.: Bradford curves (1994) 4.72

   4.717901 = sum of:
     4.717901 = weight(author_txt:rousseau in 7304) [ClassicSimilarity], result of:
       4.717901 = fieldWeight in 7304, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.5486417 = idf(docFreq=60, maxDocs=42596)
         0.625 = fieldNorm(doc=7304)
   

Similar documents (content)

1. Rowlands, I.: Journal diffusion factors : a new approach to measuring research influence (2002) 0.50

   0.49580202 = sum of:
     0.49580202 = product of:
       1.5493814 = sum of:
         0.009808238 = weight(abstract_txt:this in 998) [ClassicSimilarity], result of:
           0.009808238 = score(doc=998,freq=1.0), product of:
             0.036686223 = queryWeight, product of:
               1.033543 = boost
               2.4443867 = idf(docFreq=10047, maxDocs=42596)
               0.014521267 = queryNorm
             0.2673548 = fieldWeight in 998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4443867 = idf(docFreq=10047, maxDocs=42596)
               0.109375 = fieldNorm(doc=998)
         0.06901764 = weight(abstract_txt:quality in 998) [ClassicSimilarity], result of:
           0.06901764 = score(doc=998,freq=1.0), product of:
             0.13471493 = queryWeight, product of:
               1.9805459 = boost
               4.6841016 = idf(docFreq=1069, maxDocs=42596)
               0.014521267 = queryNorm
             0.5123236 = fieldWeight in 998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.6841016 = idf(docFreq=1069, maxDocs=42596)
               0.109375 = fieldNorm(doc=998)
         0.092981786 = weight(abstract_txt:journals in 998) [ClassicSimilarity], result of:
           0.092981786 = score(doc=998,freq=1.0), product of:
             0.16432649 = queryWeight, product of:
               2.1874132 = boost
               5.1733546 = idf(docFreq=655, maxDocs=42596)
               0.014521267 = queryNorm
             0.56583565 = fieldWeight in 998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1733546 = idf(docFreq=655, maxDocs=42596)
               0.109375 = fieldNorm(doc=998)
         0.21332997 = weight(abstract_txt:indicator in 998) [ClassicSimilarity], result of:
           0.21332997 = score(doc=998,freq=1.0), product of:
             0.28585353 = queryWeight, product of:
               2.88502 = boost
               6.8232336 = idf(docFreq=125, maxDocs=42596)
               0.014521267 = queryNorm
             0.74629116 = fieldWeight in 998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.8232336 = idf(docFreq=125, maxDocs=42596)
               0.109375 = fieldNorm(doc=998)
         0.12171532 = weight(abstract_txt:evaluation in 998) [ClassicSimilarity], result of:
           0.12171532 = score(doc=998,freq=1.0), product of:
             0.24775124 = queryWeight, product of:
               3.7983932 = boost
               4.4917064 = idf(docFreq=1296, maxDocs=42596)
               0.014521267 = queryNorm
             0.49128038 = fieldWeight in 998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4917064 = idf(docFreq=1296, maxDocs=42596)
               0.109375 = fieldNorm(doc=998)
         0.13273528 = weight(abstract_txt:impact in 998) [ClassicSimilarity], result of:
           0.13273528 = score(doc=998,freq=1.0), product of:
             0.26248828 = queryWeight, product of:
               3.909732 = boost
               4.6233673 = idf(docFreq=1136, maxDocs=42596)
               0.014521267 = queryNorm
             0.5056808 = fieldWeight in 998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.6233673 = idf(docFreq=1136, maxDocs=42596)
               0.109375 = fieldNorm(doc=998)
         0.4244987 = weight(abstract_txt:indicators in 998) [ClassicSimilarity], result of:
           0.4244987 = score(doc=998,freq=2.0), product of:
             0.45223057 = queryWeight, product of:
               5.131827 = boost
               6.0685287 = idf(docFreq=267, maxDocs=42596)
               0.014521267 = queryNorm
             0.9386776 = fieldWeight in 998, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.0685287 = idf(docFreq=267, maxDocs=42596)
               0.109375 = fieldNorm(doc=998)
         0.48529446 = weight(abstract_txt:journal in 998) [ClassicSimilarity], result of:
           0.48529446 = score(doc=998,freq=3.0), product of:
             0.49443883 = queryWeight, product of:
               6.5719457 = boost
               5.181006 = idf(docFreq=650, maxDocs=42596)
               0.014521267 = queryNorm
             0.9815056 = fieldWeight in 998, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.181006 = idf(docFreq=650, maxDocs=42596)
               0.109375 = fieldNorm(doc=998)
       0.32 = coord(8/25)
   

2. Nebelong-Bonnevie, E.; Frandsen, T.F.: Journal citation identity and journal citation image : a portrait of the Journal of Documentation (2006) 0.41

   0.40678215 = sum of:
     0.40678215 = product of:
       1.2711942 = sum of:
         0.007926253 = weight(abstract_txt:this in 587) [ClassicSimilarity], result of:
           0.007926253 = score(doc=587,freq=2.0), product of:
             0.036686223 = queryWeight, product of:
               1.033543 = boost
               2.4443867 = idf(docFreq=10047, maxDocs=42596)
               0.014521267 = queryNorm
             0.2160553 = fieldWeight in 587, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.4443867 = idf(docFreq=10047, maxDocs=42596)
               0.0625 = fieldNorm(doc=587)
         0.051474717 = weight(abstract_txt:visibility in 587) [ClassicSimilarity], result of:
           0.051474717 = score(doc=587,freq=1.0), product of:
             0.111555226 = queryWeight, product of:
               1.0405462 = boost
               7.3828497 = idf(docFreq=71, maxDocs=42596)
               0.014521267 = queryNorm
             0.4614281 = fieldWeight in 587, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.3828497 = idf(docFreq=71, maxDocs=42596)
               0.0625 = fieldNorm(doc=587)
         0.06477402 = weight(abstract_txt:multifaceted in 587) [ClassicSimilarity], result of:
           0.06477402 = score(doc=587,freq=1.0), product of:
             0.1300253 = queryWeight, product of:
               1.1233895 = boost
               7.9706364 = idf(docFreq=39, maxDocs=42596)
               0.014521267 = queryNorm
             0.49816477 = fieldWeight in 587, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.9706364 = idf(docFreq=39, maxDocs=42596)
               0.0625 = fieldNorm(doc=587)
         0.075140625 = weight(abstract_txt:journals in 587) [ClassicSimilarity], result of:
           0.075140625 = score(doc=587,freq=2.0), product of:
             0.16432649 = queryWeight, product of:
               2.1874132 = boost
               5.1733546 = idf(docFreq=655, maxDocs=42596)
               0.014521267 = queryNorm
             0.45726424 = fieldWeight in 587, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.1733546 = idf(docFreq=655, maxDocs=42596)
               0.0625 = fieldNorm(doc=587)
         0.09836083 = weight(abstract_txt:evaluation in 587) [ClassicSimilarity], result of:
           0.09836083 = score(doc=587,freq=2.0), product of:
             0.24775124 = queryWeight, product of:
               3.7983932 = boost
               4.4917064 = idf(docFreq=1296, maxDocs=42596)
               0.014521267 = queryNorm
             0.3970145 = fieldWeight in 587, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4917064 = idf(docFreq=1296, maxDocs=42596)
               0.0625 = fieldNorm(doc=587)
         0.07584873 = weight(abstract_txt:impact in 587) [ClassicSimilarity], result of:
           0.07584873 = score(doc=587,freq=1.0), product of:
             0.26248828 = queryWeight, product of:
               3.909732 = boost
               4.6233673 = idf(docFreq=1136, maxDocs=42596)
               0.014521267 = queryNorm
             0.28896046 = fieldWeight in 587, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.6233673 = idf(docFreq=1136, maxDocs=42596)
               0.0625 = fieldNorm(doc=587)
         0.34304678 = weight(abstract_txt:indicators in 587) [ClassicSimilarity], result of:
           0.34304678 = score(doc=587,freq=4.0), product of:
             0.45223057 = queryWeight, product of:
               5.131827 = boost
               6.0685287 = idf(docFreq=267, maxDocs=42596)
               0.014521267 = queryNorm
             0.7585661 = fieldWeight in 587, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.0685287 = idf(docFreq=267, maxDocs=42596)
               0.0625 = fieldNorm(doc=587)
         0.55462223 = weight(abstract_txt:journal in 587) [ClassicSimilarity], result of:
           0.55462223 = score(doc=587,freq=12.0), product of:
             0.49443883 = queryWeight, product of:
               6.5719457 = boost
               5.181006 = idf(docFreq=650, maxDocs=42596)
               0.014521267 = queryNorm
             1.1217207 = fieldWeight in 587, product of:
               3.4641016 = tf(freq=12.0), with freq of:
                 12.0 = termFreq=12.0
               5.181006 = idf(docFreq=650, maxDocs=42596)
               0.0625 = fieldNorm(doc=587)
       0.32 = coord(8/25)
   

3. Coleman, A.: Assessing the value of a journal beyond the impact factor (2007) 0.35

   0.34913284 = sum of:
     0.34913284 = product of:
       1.0910401 = sum of:
         0.005604707 = weight(abstract_txt:this in 1627) [ClassicSimilarity], result of:
           0.005604707 = score(doc=1627,freq=1.0), product of:
             0.036686223 = queryWeight, product of:
               1.033543 = boost
               2.4443867 = idf(docFreq=10047, maxDocs=42596)
               0.014521267 = queryNorm
             0.15277417 = fieldWeight in 1627, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4443867 = idf(docFreq=10047, maxDocs=42596)
               0.0625 = fieldNorm(doc=1627)
         0.020495765 = weight(abstract_txt:studies in 1627) [ClassicSimilarity], result of:
           0.020495765 = score(doc=1627,freq=1.0), product of:
             0.07606999 = queryWeight, product of:
               1.2151729 = boost
               4.310928 = idf(docFreq=1553, maxDocs=42596)
               0.014521267 = queryNorm
             0.269433 = fieldWeight in 1627, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.310928 = idf(docFreq=1553, maxDocs=42596)
               0.0625 = fieldNorm(doc=1627)
         0.05313245 = weight(abstract_txt:journals in 1627) [ClassicSimilarity], result of:
           0.05313245 = score(doc=1627,freq=1.0), product of:
             0.16432649 = queryWeight, product of:
               2.1874132 = boost
               5.1733546 = idf(docFreq=655, maxDocs=42596)
               0.014521267 = queryNorm
             0.32333466 = fieldWeight in 1627, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1733546 = idf(docFreq=655, maxDocs=42596)
               0.0625 = fieldNorm(doc=1627)
         0.064412504 = weight(abstract_txt:factors in 1627) [ClassicSimilarity], result of:
           0.064412504 = score(doc=1627,freq=1.0), product of:
             0.2056336 = queryWeight, product of:
               2.8254879 = boost
               5.0118275 = idf(docFreq=770, maxDocs=42596)
               0.014521267 = queryNorm
             0.31323922 = fieldWeight in 1627, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.0118275 = idf(docFreq=770, maxDocs=42596)
               0.0625 = fieldNorm(doc=1627)
         0.06955161 = weight(abstract_txt:evaluation in 1627) [ClassicSimilarity], result of:
           0.06955161 = score(doc=1627,freq=1.0), product of:
             0.24775124 = queryWeight, product of:
               3.7983932 = boost
               4.4917064 = idf(docFreq=1296, maxDocs=42596)
               0.014521267 = queryNorm
             0.28073165 = fieldWeight in 1627, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4917064 = idf(docFreq=1296, maxDocs=42596)
               0.0625 = fieldNorm(doc=1627)
         0.15169746 = weight(abstract_txt:impact in 1627) [ClassicSimilarity], result of:
           0.15169746 = score(doc=1627,freq=4.0), product of:
             0.26248828 = queryWeight, product of:
               3.909732 = boost
               4.6233673 = idf(docFreq=1136, maxDocs=42596)
               0.014521267 = queryNorm
             0.5779209 = fieldWeight in 1627, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.6233673 = idf(docFreq=1136, maxDocs=42596)
               0.0625 = fieldNorm(doc=1627)
         0.17152339 = weight(abstract_txt:indicators in 1627) [ClassicSimilarity], result of:
           0.17152339 = score(doc=1627,freq=1.0), product of:
             0.45223057 = queryWeight, product of:
               5.131827 = boost
               6.0685287 = idf(docFreq=267, maxDocs=42596)
               0.014521267 = queryNorm
             0.37928304 = fieldWeight in 1627, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.0685287 = idf(docFreq=267, maxDocs=42596)
               0.0625 = fieldNorm(doc=1627)
         0.55462223 = weight(abstract_txt:journal in 1627) [ClassicSimilarity], result of:
           0.55462223 = score(doc=1627,freq=12.0), product of:
             0.49443883 = queryWeight, product of:
               6.5719457 = boost
               5.181006 = idf(docFreq=650, maxDocs=42596)
               0.014521267 = queryNorm
             1.1217207 = fieldWeight in 1627, product of:
               3.4641016 = tf(freq=12.0), with freq of:
                 12.0 = termFreq=12.0
               5.181006 = idf(docFreq=650, maxDocs=42596)
               0.0625 = fieldNorm(doc=1627)
       0.32 = coord(8/25)
   

4. Liang, L.; Rousseau, R.: Yield sequences as journal attractivity indicators : "payback times" for Science and Nature (2008) 0.30

   0.3046536 = sum of:
     0.3046536 = product of:
       1.0880486 = sum of:
         0.058958873 = weight(abstract_txt:periods in 2917) [ClassicSimilarity], result of:
           0.058958873 = score(doc=2917,freq=1.0), product of:
             0.105241425 = queryWeight, product of:
               1.0106709 = boost
               7.1708794 = idf(docFreq=88, maxDocs=42596)
               0.014521267 = queryNorm
             0.56022495 = fieldWeight in 2917, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.1708794 = idf(docFreq=88, maxDocs=42596)
               0.078125 = fieldNorm(doc=2917)
         0.007005884 = weight(abstract_txt:this in 2917) [ClassicSimilarity], result of:
           0.007005884 = score(doc=2917,freq=1.0), product of:
             0.036686223 = queryWeight, product of:
               1.033543 = boost
               2.4443867 = idf(docFreq=10047, maxDocs=42596)
               0.014521267 = queryNorm
             0.19096771 = fieldWeight in 2917, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4443867 = idf(docFreq=10047, maxDocs=42596)
               0.078125 = fieldNorm(doc=2917)
         0.09392578 = weight(abstract_txt:journals in 2917) [ClassicSimilarity], result of:
           0.09392578 = score(doc=2917,freq=2.0), product of:
             0.16432649 = queryWeight, product of:
               2.1874132 = boost
               5.1733546 = idf(docFreq=655, maxDocs=42596)
               0.014521267 = queryNorm
             0.5715803 = fieldWeight in 2917, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.1733546 = idf(docFreq=655, maxDocs=42596)
               0.078125 = fieldNorm(doc=2917)
         0.1138663 = weight(abstract_txt:factors in 2917) [ClassicSimilarity], result of:
           0.1138663 = score(doc=2917,freq=2.0), product of:
             0.2056336 = queryWeight, product of:
               2.8254879 = boost
               5.0118275 = idf(docFreq=770, maxDocs=42596)
               0.014521267 = queryNorm
             0.55373394 = fieldWeight in 2917, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.0118275 = idf(docFreq=770, maxDocs=42596)
               0.078125 = fieldNorm(doc=2917)
         0.15237856 = weight(abstract_txt:indicator in 2917) [ClassicSimilarity], result of:
           0.15237856 = score(doc=2917,freq=1.0), product of:
             0.28585353 = queryWeight, product of:
               2.88502 = boost
               6.8232336 = idf(docFreq=125, maxDocs=42596)
               0.014521267 = queryNorm
             0.53306514 = fieldWeight in 2917, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.8232336 = idf(docFreq=125, maxDocs=42596)
               0.078125 = fieldNorm(doc=2917)
         0.21440424 = weight(abstract_txt:indicators in 2917) [ClassicSimilarity], result of:
           0.21440424 = score(doc=2917,freq=1.0), product of:
             0.45223057 = queryWeight, product of:
               5.131827 = boost
               6.0685287 = idf(docFreq=267, maxDocs=42596)
               0.014521267 = queryNorm
             0.4741038 = fieldWeight in 2917, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.0685287 = idf(docFreq=267, maxDocs=42596)
               0.078125 = fieldNorm(doc=2917)
         0.44750893 = weight(abstract_txt:journal in 2917) [ClassicSimilarity], result of:
           0.44750893 = score(doc=2917,freq=5.0), product of:
             0.49443883 = queryWeight, product of:
               6.5719457 = boost
               5.181006 = idf(docFreq=650, maxDocs=42596)
               0.014521267 = queryNorm
             0.90508455 = fieldWeight in 2917, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.181006 = idf(docFreq=650, maxDocs=42596)
               0.078125 = fieldNorm(doc=2917)
       0.28 = coord(7/25)
   

5. Frandsen, T.F.; Rousseau, R.: Article impact calculated over arbitrary periods (2005) 0.29

   0.28559747 = sum of:
     0.28559747 = product of:
       0.8924921 = sum of:
         0.10211976 = weight(abstract_txt:periods in 4265) [ClassicSimilarity], result of:
           0.10211976 = score(doc=4265,freq=3.0), product of:
             0.105241425 = queryWeight, product of:
               1.0106709 = boost
               7.1708794 = idf(docFreq=88, maxDocs=42596)
               0.014521267 = queryNorm
             0.97033805 = fieldWeight in 4265, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.1708794 = idf(docFreq=88, maxDocs=42596)
               0.078125 = fieldNorm(doc=4265)
         0.007005884 = weight(abstract_txt:this in 4265) [ClassicSimilarity], result of:
           0.007005884 = score(doc=4265,freq=1.0), product of:
             0.036686223 = queryWeight, product of:
               1.033543 = boost
               2.4443867 = idf(docFreq=10047, maxDocs=42596)
               0.014521267 = queryNorm
             0.19096771 = fieldWeight in 4265, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4443867 = idf(docFreq=10047, maxDocs=42596)
               0.078125 = fieldNorm(doc=4265)
         0.10652747 = weight(abstract_txt:depending in 4265) [ClassicSimilarity], result of:
           0.10652747 = score(doc=4265,freq=1.0), product of:
             0.19670029 = queryWeight, product of:
               1.9540421 = boost
               6.932128 = idf(docFreq=112, maxDocs=42596)
               0.014521267 = queryNorm
             0.5415725 = fieldWeight in 4265, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.932128 = idf(docFreq=112, maxDocs=42596)
               0.078125 = fieldNorm(doc=4265)
         0.045578964 = weight(abstract_txt:different in 4265) [ClassicSimilarity], result of:
           0.045578964 = score(doc=4265,freq=2.0), product of:
             0.1116881 = queryWeight, product of:
               2.0823314 = boost
               3.6936228 = idf(docFreq=2880, maxDocs=42596)
               0.014521267 = queryNorm
             0.40809152 = fieldWeight in 4265, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6936228 = idf(docFreq=2880, maxDocs=42596)
               0.078125 = fieldNorm(doc=4265)
         0.06641556 = weight(abstract_txt:journals in 4265) [ClassicSimilarity], result of:
           0.06641556 = score(doc=4265,freq=1.0), product of:
             0.16432649 = queryWeight, product of:
               2.1874132 = boost
               5.1733546 = idf(docFreq=655, maxDocs=42596)
               0.014521267 = queryNorm
             0.40416834 = fieldWeight in 4265, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1733546 = idf(docFreq=655, maxDocs=42596)
               0.078125 = fieldNorm(doc=4265)
         0.1138663 = weight(abstract_txt:factors in 4265) [ClassicSimilarity], result of:
           0.1138663 = score(doc=4265,freq=2.0), product of:
             0.2056336 = queryWeight, product of:
               2.8254879 = boost
               5.0118275 = idf(docFreq=770, maxDocs=42596)
               0.014521267 = queryNorm
             0.55373394 = fieldWeight in 4265, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.0118275 = idf(docFreq=770, maxDocs=42596)
               0.078125 = fieldNorm(doc=4265)
         0.2508461 = weight(abstract_txt:impact in 4265) [ClassicSimilarity], result of:
           0.2508461 = score(doc=4265,freq=7.0), product of:
             0.26248828 = queryWeight, product of:
               3.909732 = boost
               4.6233673 = idf(docFreq=1136, maxDocs=42596)
               0.014521267 = queryNorm
             0.9556469 = fieldWeight in 4265, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               4.6233673 = idf(docFreq=1136, maxDocs=42596)
               0.078125 = fieldNorm(doc=4265)
         0.20013207 = weight(abstract_txt:journal in 4265) [ClassicSimilarity], result of:
           0.20013207 = score(doc=4265,freq=1.0), product of:
             0.49443883 = queryWeight, product of:
               6.5719457 = boost
               5.181006 = idf(docFreq=650, maxDocs=42596)
               0.014521267 = queryNorm
             0.40476608 = fieldWeight in 4265, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.181006 = idf(docFreq=650, maxDocs=42596)
               0.078125 = fieldNorm(doc=4265)
       0.32 = coord(8/25)