caa a22 4500 445348380 CHVBK 20180317142836.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s11192-011-0345-6 doi (NATIONALLICENCE)springer-10.1007/s11192-011-0345-6 A priori vs. a posteriori normalisation of citation indicators. The case of journal ranking [Elektronische Daten] [Wolfgang Glänzel, András Schubert, Bart Thijs, Koenraad Debackere] Two paradigmatic approaches to the normalisation of citation-impact measures are discussed. The results of the mathematical manipulation of standard indicators such as citation means, notably journal Impact Factors, (called a posteriori normalisation) are compared with citation measures obtained from fractional citation counting (called a priori normalisation). The distributions of two subfields of the life sciences and mathematics are chosen for the analysis. It is shown that both methods provide indicators that are useful tools for the comparative assessment of journal citation impact. Akadémiai Kiadó, Budapest, Hungary, 2011 Citation measures nationallicence Normalisation nationallicence Journal impact measures nationallicence Journal ranking nationallicence Characteristic scores and scales nationallicence Glänzel Wolfgang Centre for R&D Monitoring and Department of MSI, Katholieke Universiteit Leuven, Leuven, Belgium aut Schubert András Hungarian Academy of Sciences, Institute for Research Policy Studies, Budapest, Hungary aut Thijs Bart Centre for R&D Monitoring and Department of MSI, Katholieke Universiteit Leuven, Leuven, Belgium aut Debackere Koenraad Centre for R&D Monitoring and Department of MSI, Katholieke Universiteit Leuven, Leuven, Belgium aut Scientometrics Springer Netherlands 87/2(2011-05-01), 415-424 0138-9130 87:2<415 2011 87 11192 https://doi.org/10.1007/s11192-011-0345-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11192-011-0345-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Glänzel Wolfgang Centre for R&D Monitoring and Department of MSI, Katholieke Universiteit Leuven, Leuven, Belgium aut NATIONALLICENCE 700 1- Schubert András Hungarian Academy of Sciences, Institute for Research Policy Studies, Budapest, Hungary aut NATIONALLICENCE 700 1- Thijs Bart Centre for R&D Monitoring and Department of MSI, Katholieke Universiteit Leuven, Leuven, Belgium aut NATIONALLICENCE 700 1- Debackere Koenraad Centre for R&D Monitoring and Department of MSI, Katholieke Universiteit Leuven, Leuven, Belgium aut NATIONALLICENCE 773 0- Scientometrics Springer Netherlands 87/2(2011-05-01), 415-424 0138-9130 87:2<415 2011 87 11192 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer