-
Leydesdorff, L.; Rotolo, D.; Rafols, I.: Bibliometric perspectives on medical innovation using the medical subject headings of PubMed (2012)
0.01
0.011877453 = product of:
0.023754906 = sum of:
0.023754906 = product of:
0.04750981 = sum of:
0.04750981 = weight(_text_:l in 494) [ClassicSimilarity], result of:
0.04750981 = score(doc=494,freq=2.0), product of:
0.18031335 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.045365814 = queryNorm
0.26348472 = fieldWeight in 494, 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=494)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Rotolo, D.; Rafols, I.; Hopkins, M.M.; Leydesdorff, L.: Strategic intelligence on emerging technologies : scientometric overlay mapping (2017)
0.01
0.011877453 = product of:
0.023754906 = sum of:
0.023754906 = product of:
0.04750981 = sum of:
0.04750981 = weight(_text_:l in 3322) [ClassicSimilarity], result of:
0.04750981 = score(doc=3322,freq=2.0), product of:
0.18031335 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.045365814 = queryNorm
0.26348472 = fieldWeight in 3322, 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=3322)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Leydesdorff, L.; Rafols, I.: ¬A global map of science based on the ISI subject categories (2009)
0.01
0.009897877 = product of:
0.019795755 = sum of:
0.019795755 = product of:
0.03959151 = sum of:
0.03959151 = weight(_text_:l in 2713) [ClassicSimilarity], result of:
0.03959151 = score(doc=2713,freq=2.0), product of:
0.18031335 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.045365814 = queryNorm
0.2195706 = fieldWeight in 2713, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0390625 = fieldNorm(doc=2713)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Rafols, I.; Leydesdorff, L.: Content-based and algorithmic classifications of journals : perspectives on the dynamics of scientific communication and indexer effects (2009)
0.01
0.009897877 = product of:
0.019795755 = sum of:
0.019795755 = product of:
0.03959151 = sum of:
0.03959151 = weight(_text_:l in 3095) [ClassicSimilarity], result of:
0.03959151 = score(doc=3095,freq=2.0), product of:
0.18031335 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.045365814 = queryNorm
0.2195706 = fieldWeight in 3095, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0390625 = fieldNorm(doc=3095)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Leydesdorff, L.; Rafols, I.; Chen, C.: Interactive overlays of journals and the measurement of interdisciplinarity on the basis of aggregated journal-journal citations (2013)
0.01
0.009897877 = product of:
0.019795755 = sum of:
0.019795755 = product of:
0.03959151 = sum of:
0.03959151 = weight(_text_:l in 1131) [ClassicSimilarity], result of:
0.03959151 = score(doc=1131,freq=2.0), product of:
0.18031335 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.045365814 = queryNorm
0.2195706 = fieldWeight in 1131, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0390625 = fieldNorm(doc=1131)
0.5 = coord(1/2)
0.5 = coord(1/2)