Multiplicative versus fractional counting methods for co-authored publications. The case of the 500 universities in the Leiden Ranking
作者：
Highlights：
• We discuss a new shortcoming of the full counting method.
• We compare the fractional and the multiplicative counting methods for the 500 Leiden Ranking universities.
• Small differences between co-authorship rates and citation impact values generate considerable re-rankings between universities.
• We study which type of university benefits from a move from the fractional to the multiplicative counting method.
摘要
•We discuss a new shortcoming of the full counting method.•We compare the fractional and the multiplicative counting methods for the 500 Leiden Ranking universities.•Small differences between co-authorship rates and citation impact values generate considerable re-rankings between universities.•We study which type of university benefits from a move from the fractional to the multiplicative counting method.
论文关键词：Co-authorship,Counting methods,Citation impact
论文评审过程：Received 18 May 2015, Revised 7 October 2015, Accepted 7 October 2015, Available online 19 November 2015, Version of Record 19 November 2015.
论文官网地址：https://doi.org/10.1016/j.joi.2015.10.002
