Rafols, I.; Porter, A.L.; Leydesdorff, L.: Science overlay maps : a new tool for research policy and library management (2010)
0.00
0.0011630029 = product of:
0.0034890086 = sum of:
0.0034890086 = weight(_text_:s in 3987) [ClassicSimilarity], result of:
0.0034890086 = score(doc=3987,freq=2.0), product of:
0.048408467 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.044524275 = queryNorm
0.072074346 = fieldWeight in 3987, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=3987)
0.33333334 = coord(1/3)
- Source
- Journal of the American Society for Information Science and Technology. 61(2010) no.9, S.1871-1887
