-
Costas, R.; Zahedi, Z.; Wouters, P.: ¬The thematic orientation of publications mentioned on social media : large-scale disciplinary comparison of social media metrics with citations (2015)
0.02
0.022721825 = product of:
0.05680456 = sum of:
0.021246448 = weight(_text_:18 in 2598) [ClassicSimilarity], result of:
0.021246448 = score(doc=2598,freq=4.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.1778285 = fieldWeight in 2598, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.0390625 = fieldNorm(doc=2598)
0.035558112 = weight(_text_:22 in 2598) [ClassicSimilarity], result of:
0.035558112 = score(doc=2598,freq=2.0), product of:
0.1838098 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052489646 = queryNorm
0.19345059 = fieldWeight in 2598, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2598)
0.4 = coord(2/5)
- Date
- 20. 1.2015 18:30:22
18. 9.2018 19:14:00
-
Costas, R.; Bordons, M.; Leeuwen, T.N. van; Raan, A.F.J. van: Scaling rules in the science system : Influence of field-specific citation characteristics on the impact of individual researchers (2009)
0.02
0.020232648 = product of:
0.05058162 = sum of:
0.015023507 = weight(_text_:18 in 2759) [ClassicSimilarity], result of:
0.015023507 = score(doc=2759,freq=2.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.12574373 = fieldWeight in 2759, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.0390625 = fieldNorm(doc=2759)
0.035558112 = weight(_text_:22 in 2759) [ClassicSimilarity], result of:
0.035558112 = score(doc=2759,freq=2.0), product of:
0.1838098 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052489646 = queryNorm
0.19345059 = fieldWeight in 2759, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2759)
0.4 = coord(2/5)
- Date
- 17. 2.1997 18:25:04
22. 3.2009 19:02:48
-
Costas, R.; Perianes-Rodríguez, A.; Ruiz-Castillo, J.: On the quest for currencies of science : field "exchange rates" for citations and Mendeley readership (2017)
0.02
0.018177459 = product of:
0.045443647 = sum of:
0.016997159 = weight(_text_:18 in 4051) [ClassicSimilarity], result of:
0.016997159 = score(doc=4051,freq=4.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.1422628 = fieldWeight in 4051, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.03125 = fieldNorm(doc=4051)
0.02844649 = weight(_text_:22 in 4051) [ClassicSimilarity], result of:
0.02844649 = score(doc=4051,freq=2.0), product of:
0.1838098 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052489646 = queryNorm
0.15476047 = fieldWeight in 4051, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03125 = fieldNorm(doc=4051)
0.4 = coord(2/5)
- Date
- 20. 1.2015 18:30:22
18. 9.2018 16:30:08
-
Waltman, L.; Costas, R.: F1000 Recommendations as a potential new data source for research evaluation : a comparison with citations (2014)
0.01
0.0062451554 = product of:
0.031225776 = sum of:
0.031225776 = weight(_text_:18 in 1212) [ClassicSimilarity], result of:
0.031225776 = score(doc=1212,freq=6.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.26135346 = fieldWeight in 1212, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.046875 = fieldNorm(doc=1212)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04
18. 3.2014 18:04:21
-
Costas, R.; Rijcke, S. de; Marres, N.: "Heterogeneous couplings" : operationalizing network perspectives to study science-society interactions through social media metrics (2021)
0.00
0.0042492896 = product of:
0.021246448 = sum of:
0.021246448 = weight(_text_:18 in 215) [ClassicSimilarity], result of:
0.021246448 = score(doc=215,freq=4.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.1778285 = fieldWeight in 215, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.0390625 = fieldNorm(doc=215)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04
11. 4.2021 18:25:53
-
Costas, R.; Leeuwen, T.N. van; Bordons, M.: ¬A bibliometric classificatory approach for the study and assessment of research performance at the individual level : the effects of age on productivity and impact (2010)
0.00
0.003605642 = product of:
0.018028209 = sum of:
0.018028209 = weight(_text_:18 in 3700) [ClassicSimilarity], result of:
0.018028209 = score(doc=3700,freq=2.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.15089248 = fieldWeight in 3700, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.046875 = fieldNorm(doc=3700)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04
-
Fang, Z.; Dudek, J.; Costas, R.: Facing the volatility of tweets in altmetric research (2022)
0.00
0.003605642 = product of:
0.018028209 = sum of:
0.018028209 = weight(_text_:18 in 605) [ClassicSimilarity], result of:
0.018028209 = score(doc=605,freq=2.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.15089248 = fieldWeight in 605, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.046875 = fieldNorm(doc=605)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04
-
Costas, R.; Leeuwen, T.N. van; Raan, A.F.J. van: Is scientific literature subject to a 'Sell-By-Date'? : a general methodology to analyze the 'durability' of scientific documents (2010)
0.00
0.0030047016 = product of:
0.015023507 = sum of:
0.015023507 = weight(_text_:18 in 3333) [ClassicSimilarity], result of:
0.015023507 = score(doc=3333,freq=2.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.12574373 = fieldWeight in 3333, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.0390625 = fieldNorm(doc=3333)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04
-
Costas, R.; Leeuwen, T.N. van: Approaching the "reward triangle" : general analysis of the presence of funding acknowledgments and "peer interactive communication" in scientific publications (2012)
0.00
0.0030047016 = product of:
0.015023507 = sum of:
0.015023507 = weight(_text_:18 in 363) [ClassicSimilarity], result of:
0.015023507 = score(doc=363,freq=2.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.12574373 = fieldWeight in 363, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.0390625 = fieldNorm(doc=363)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04
-
Costas, R.; Leeuwen, T.N. van; Bordons, M.: Referencing patterns of individual researchers : do top scientists rely on more extensive information sources? (2012)
0.00
0.0030047016 = product of:
0.015023507 = sum of:
0.015023507 = weight(_text_:18 in 516) [ClassicSimilarity], result of:
0.015023507 = score(doc=516,freq=2.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.12574373 = fieldWeight in 516, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.0390625 = fieldNorm(doc=516)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04
-
Costas, R.; Zahedi, Z.; Wouters, P.: Do "altmetrics" correlate with citations? : extensive comparison of altmetric indicators with citations from a multidisciplinary perspective (2015)
0.00
0.0030047016 = product of:
0.015023507 = sum of:
0.015023507 = weight(_text_:18 in 2214) [ClassicSimilarity], result of:
0.015023507 = score(doc=2214,freq=2.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.12574373 = fieldWeight in 2214, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.0390625 = fieldNorm(doc=2214)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04
-
Schneider, J.W.; Costas, R.: Identifying potential "breakthrough" publications using refined citation analyses : three related explorative approaches (2017)
0.00
0.0030047016 = product of:
0.015023507 = sum of:
0.015023507 = weight(_text_:18 in 3436) [ClassicSimilarity], result of:
0.015023507 = score(doc=3436,freq=2.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.12574373 = fieldWeight in 3436, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.0390625 = fieldNorm(doc=3436)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04
-
Zahedi, Z.; Costas, R.; Wouters, P.: Mendeley readership as a filtering tool to identify highly cited publications (2017)
0.00
0.0030047016 = product of:
0.015023507 = sum of:
0.015023507 = weight(_text_:18 in 3837) [ClassicSimilarity], result of:
0.015023507 = score(doc=3837,freq=2.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.12574373 = fieldWeight in 3837, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.0390625 = fieldNorm(doc=3837)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04
-
Fang, Z.; Dudek, J.; Costas, R.: ¬The stability of Twitter metrics : a study on unavailable Twitter mentions of scientific publications (2020)
0.00
0.0030047016 = product of:
0.015023507 = sum of:
0.015023507 = weight(_text_:18 in 35) [ClassicSimilarity], result of:
0.015023507 = score(doc=35,freq=2.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.12574373 = fieldWeight in 35, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.0390625 = fieldNorm(doc=35)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04
-
Fang, Z.; Costas, R.; Tian, W.; Wang, X.; Wouters, P.: How is science clicked on Twitter? : click metrics for Bitly short links to scientific publications (2021)
0.00
0.0030047016 = product of:
0.015023507 = sum of:
0.015023507 = weight(_text_:18 in 265) [ClassicSimilarity], result of:
0.015023507 = score(doc=265,freq=2.0), product of:
0.11947718 = queryWeight, product of:
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.052489646 = queryNorm
0.12574373 = fieldWeight in 265, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2762048 = idf(docFreq=12340, maxDocs=44218)
0.0390625 = fieldNorm(doc=265)
0.2 = coord(1/5)
- Date
- 17. 2.1997 18:25:04