TY - JOUR
T1 - The iceberg hypothesis revisited
AU - Lancho-Barrantes, B.S.
AU - Guerrero-Bote, V.P.
AU - Moya-Anegón, F.
PY - 2010/3/16
Y1 - 2010/3/16
N2 - A study is described of the rank/JIF (Journal Impact Factor) distributions in the high-coverage Scopus database, using recent data and a three-year citation window. It includes a comparison with an older study of the Journal Citation Report categories and indicators, and a determination of the factors most influencing the distributions. While all the specific subject areas fit a negative logarithmic law fairly well, those with a greater External JIF have distributions with a more sharply defined peak and a longer tail—something like an iceberg. No S-shaped distributions, such as predicted by Egghe, were found. A strong correlation was observed between the knowledge export and import ratios. Finally, data from both Scopus and ISI were used to characterize the rank/JIF distributions by subject area.
AB - A study is described of the rank/JIF (Journal Impact Factor) distributions in the high-coverage Scopus database, using recent data and a three-year citation window. It includes a comparison with an older study of the Journal Citation Report categories and indicators, and a determination of the factors most influencing the distributions. While all the specific subject areas fit a negative logarithmic law fairly well, those with a greater External JIF have distributions with a more sharply defined peak and a longer tail—something like an iceberg. No S-shaped distributions, such as predicted by Egghe, were found. A strong correlation was observed between the knowledge export and import ratios. Finally, data from both Scopus and ISI were used to characterize the rank/JIF distributions by subject area.
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-77956893108&partnerID=MN8TOARS
U2 - 10.1007/s11192-010-0209-5
DO - 10.1007/s11192-010-0209-5
M3 - Article
VL - 85
SP - 443
EP - 461
JO - Scientometrics
JF - Scientometrics
ER -