Multiplicative versus fractional counting methods for co-authored publications : the case of the 500 universities in the Leiden ranking

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dc.contributor.author Perianes-Rodríguez, Antonio
dc.contributor.author Ruiz-Castillo, Javier
dc.contributor.editor Universidad Carlos III de Madrid. Departamento de Economía
dc.date.accessioned 2015-04-21T16:02:35Z
dc.date.accessioned 2015-05-18T15:09:34Z
dc.date.available 2015-05-18T15:09:34Z
dc.date.issued 2015-04-01
dc.identifier.issn 2340-5031
dc.identifier.uri http://hdl.handle.net/10016/20457
dc.description.abstract This paper studies the assignment of responsibility to the participants in the case of co-authored scientific publications. In the conceptual part, we establish that the key shortcoming of the full counting method is its incompatibility with the use of additively decomposable citation impact indicators. In the empirical part of the paper, we study the consequences of adopting the address-line fractional or multiplicative counting method. For this purpose, we use a Web of Science dataset consisting of 3.6 million articles published in the 2005-2008 period, and classified into 5,119 clusters. Our research units are the 500 universities in the 2013 edition of the CWTS Leiden Ranking. Citation impact is measured using the Mean Normalized Citation Score, and the Top 10% indicators. The main findings are the following. Firstly, although a change of counting methods alters co-authorship and citation impact patterns, cardinal differences between co-authorship rates and between citation impact values are generally small. Nevertheless, such small differences generate considerable re-rankings between universities. Secondly, the universities that are more penalized by the adoption of a fractional rather than a multiplicative approach are those with a small co-authorship rate for the citation distribution as a whole, a large co-authorship rate in the upper tail of this distribution, a low citation impact performance, and a small number of solo publications.
dc.description.sponsorship Ruiz-Castillo acknowledges financial support from the Spanish MEC through grant ECO2014-55953-P.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.relation.ispartofseries UC3M Working papers. Economics
dc.relation.ispartofseries 15-05
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.title Multiplicative versus fractional counting methods for co-authored publications : the case of the 500 universities in the Leiden ranking
dc.type workingPaper
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. ECO2014-55953-P
dc.type.version submitedVersion
dc.identifier.uxxi DT/0000001357
dc.identifier.repec we1505
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