Page 4 - IDEA Studie 19 2016 Srovnani casopisu podle IF a AIS
P. 4

 Study 19 / 2016
A global comparison of Czech and Slovak academic journals based on their Impact Factor (IF)
and Article Influence Score (AIS)4 DECEMBER 2016
DANIEL MÜNICH2), SAMUEL ŠKODA2)56
Summary
 We compare the scores in the widely used citation index of academic journals known as Impact Factor (IF) with the lesser known but more sophisticated index Article Influence Score (AIS).
 There is a positive correlation between the relative IF and AIS scores within fields, but the spread is quite high. The difference between the IF and AIS scores is caused by differences in the extent of journal self-citation and in the academic importance of the journals from which journal articles are cited.
 Czech publication output in relatively major journals tends to be concentrated in journals with a lower AIS than IF. These articles also tend to be concentrated in a rather small number of international journals.
 In many fields, Czech publication output is concentrated in Czech and Slovak journals, most of which have relatively low AIS and IF. The IF and AIS of some Czech journals are entirely outside the natural range of scores worldwide.
4 This study was made possible thanks to support from the Czech Academy of Sciences within its AV21 Strategy. The authors wish to thank J. Kovařík for his assistance with gaining information from WoS and S. Kozubek and Š. Jurajda for their comments. Any ambiguities, omissions or errors are the authors' responsibility.
5 IDEA think tank at the Economics Institute of the Czech Academy of Sciences functions within CERGE-EI – a joint workplace of the Czech Academy of Sciences and the Center for Economic Research and Graduate Education of the Charles University.
6 Institute of Biophysics of the Czech Academy of Sciences. 2
   






















































































   2   3   4   5   6