-
Waltman, L.; Costas, R.: F1000 Recommendations as a potential new data source for research evaluation : a comparison with citations (2014)
0.01
0.011877453 = product of:
0.023754906 = sum of:
0.023754906 = product of:
0.04750981 = sum of:
0.04750981 = weight(_text_:l in 1212) [ClassicSimilarity], result of:
0.04750981 = score(doc=1212,freq=2.0), product of:
0.18031335 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.045365814 = queryNorm
0.26348472 = fieldWeight in 1212, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.046875 = fieldNorm(doc=1212)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
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)
0.01
0.007683052 = product of:
0.015366104 = sum of:
0.015366104 = product of:
0.030732209 = sum of:
0.030732209 = weight(_text_:22 in 2759) [ClassicSimilarity], result of:
0.030732209 = score(doc=2759,freq=2.0), product of:
0.15886335 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045365814 = 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)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 3.2009 19:02:48
-
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)
0.01
0.007683052 = product of:
0.015366104 = sum of:
0.015366104 = product of:
0.030732209 = sum of:
0.030732209 = weight(_text_:22 in 2598) [ClassicSimilarity], result of:
0.030732209 = score(doc=2598,freq=2.0), product of:
0.15886335 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045365814 = 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)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 20. 1.2015 18:30:22
-
Costas, R.; Perianes-Rodríguez, A.; Ruiz-Castillo, J.: On the quest for currencies of science : field "exchange rates" for citations and Mendeley readership (2017)
0.01
0.0061464417 = product of:
0.012292883 = sum of:
0.012292883 = product of:
0.024585767 = sum of:
0.024585767 = weight(_text_:22 in 4051) [ClassicSimilarity], result of:
0.024585767 = score(doc=4051,freq=2.0), product of:
0.15886335 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045365814 = 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)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 20. 1.2015 18:30:22