-
Leydesdorff, L.: Dynamic and evolutionary updates of classificatory schemes in scientific journal structures (2002)
0.01
0.01468036 = product of:
0.02936072 = sum of:
0.02936072 = product of:
0.05872144 = sum of:
0.05872144 = weight(_text_:indexing in 1249) [ClassicSimilarity], result of:
0.05872144 = score(doc=1249,freq=2.0), product of:
0.19835205 = queryWeight, product of:
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.051817898 = queryNorm
0.29604656 = fieldWeight in 1249, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.0546875 = fieldNorm(doc=1249)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Theme
- Citation indexing
-
Leydesdorff, L.: Clusters and maps of science journals based on bi-connected graphs in Journal Citation Reports (2004)
0.01
0.012583166 = product of:
0.025166333 = sum of:
0.025166333 = product of:
0.050332665 = sum of:
0.050332665 = weight(_text_:indexing in 4427) [ClassicSimilarity], result of:
0.050332665 = score(doc=4427,freq=2.0), product of:
0.19835205 = queryWeight, product of:
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.051817898 = queryNorm
0.2537542 = fieldWeight in 4427, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.046875 = fieldNorm(doc=4427)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Theme
- Citation indexing
-
Leydesdorff, L.; Bihui, J.: Mapping the Chinese Science Citation Database in terms of aggregated journal-journal citation relations (2005)
0.01
0.012583166 = product of:
0.025166333 = sum of:
0.025166333 = product of:
0.050332665 = sum of:
0.050332665 = weight(_text_:indexing in 4813) [ClassicSimilarity], result of:
0.050332665 = score(doc=4813,freq=2.0), product of:
0.19835205 = queryWeight, product of:
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.051817898 = queryNorm
0.2537542 = fieldWeight in 4813, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.046875 = fieldNorm(doc=4813)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Theme
- Citation indexing
-
Leydesdorff, L.: Can scientific journals be classified in terms of aggregated journal-journal citation relations using the Journal Citation Reports? (2006)
0.01
0.012583166 = product of:
0.025166333 = sum of:
0.025166333 = product of:
0.050332665 = sum of:
0.050332665 = weight(_text_:indexing in 5046) [ClassicSimilarity], result of:
0.050332665 = score(doc=5046,freq=2.0), product of:
0.19835205 = queryWeight, product of:
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.051817898 = queryNorm
0.2537542 = fieldWeight in 5046, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.046875 = fieldNorm(doc=5046)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Theme
- Citation indexing
-
Leydesdorff, L.: On the normalization and visualization of author co-citation data : Salton's Cosine versus the Jaccard index (2008)
0.01
0.012583166 = product of:
0.025166333 = sum of:
0.025166333 = product of:
0.050332665 = sum of:
0.050332665 = weight(_text_:indexing in 1341) [ClassicSimilarity], result of:
0.050332665 = score(doc=1341,freq=2.0), product of:
0.19835205 = queryWeight, product of:
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.051817898 = queryNorm
0.2537542 = fieldWeight in 1341, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.046875 = fieldNorm(doc=1341)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Theme
- Citation indexing
-
Leydesdorff, L.: Caveats for the use of citation indicators in research and journal evaluations (2008)
0.01
0.012583166 = product of:
0.025166333 = sum of:
0.025166333 = product of:
0.050332665 = sum of:
0.050332665 = weight(_text_:indexing in 1361) [ClassicSimilarity], result of:
0.050332665 = score(doc=1361,freq=2.0), product of:
0.19835205 = queryWeight, product of:
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.051817898 = queryNorm
0.2537542 = fieldWeight in 1361, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.046875 = fieldNorm(doc=1361)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Theme
- Citation indexing
-
Leydesdorff, L.: ¬The construction and globalization of the knowledge base in inter-human communication systems (2003)
0.01
0.010530914 = product of:
0.021061828 = sum of:
0.021061828 = product of:
0.042123657 = sum of:
0.042123657 = weight(_text_:22 in 1621) [ClassicSimilarity], result of:
0.042123657 = score(doc=1621,freq=2.0), product of:
0.18145745 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051817898 = queryNorm
0.23214069 = fieldWeight in 1621, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=1621)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 5.2003 19:48:04
-
Leydesdorff, L.: Can networks of journal-journal citations be used as indicators of change in the social sciences? (2003)
0.01
0.010530914 = product of:
0.021061828 = sum of:
0.021061828 = product of:
0.042123657 = sum of:
0.042123657 = weight(_text_:22 in 4460) [ClassicSimilarity], result of:
0.042123657 = score(doc=4460,freq=2.0), product of:
0.18145745 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051817898 = queryNorm
0.23214069 = fieldWeight in 4460, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=4460)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 6.11.2005 19:02:22
-
Leydesdorff, L.; Sun, Y.: National and international dimensions of the Triple Helix in Japan : university-industry-government versus international coauthorship relations (2009)
0.01
0.010530914 = product of:
0.021061828 = sum of:
0.021061828 = product of:
0.042123657 = sum of:
0.042123657 = weight(_text_:22 in 2761) [ClassicSimilarity], result of:
0.042123657 = score(doc=2761,freq=2.0), product of:
0.18145745 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051817898 = queryNorm
0.23214069 = fieldWeight in 2761, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=2761)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 3.2009 19:07:20
-
Leydesdorff, L.: Visualization of the citation impact environments of scientific journals : an online mapping exercise (2007)
0.01
0.010485971 = product of:
0.020971943 = sum of:
0.020971943 = product of:
0.041943885 = sum of:
0.041943885 = weight(_text_:indexing in 82) [ClassicSimilarity], result of:
0.041943885 = score(doc=82,freq=2.0), product of:
0.19835205 = queryWeight, product of:
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.051817898 = queryNorm
0.21146181 = fieldWeight in 82, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.0390625 = fieldNorm(doc=82)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Theme
- Citation indexing