Methods for the generation of normalized citation impact scores in bibliometrics: Which method best reflects the judgements of experts?

Journal reader impact Mean discipline normalized reader score MDNRS Mean normalized reader score MNRS a b s t r a c t For the normalization of citation counts, two different kinds of methods are possible and used in bibliometrics: the cited-side and citing-side normalizations both of which can also be applied in the normalization of "Mendeley reader counts". Haunschild and Bornmann (2016a) introduced the paper-side normalization of reader counts (mean normalized reader score, MNRS) which is an adaptation of the cited-side normalization. Since the calculation of the MNRS needs further data besides data from Mendeley (a field-classification scheme, such as the Web of Science subject categories), we introduce here the reader-side normalization of reader counts which is an adaptation of the citing-side normalization and does not need further data from other sources, because self-assigned Mendeley disciplines are used. In this study, all articles and reviews of the Web of Science core collection with publication year 2012 (and a DOI) are used to normalize their Mendeley reader counts. The newly proposed indicator (mean discipline normalized reader score, MDNRS) is obtained, compared with the MNRS and bare reader counts, and studied theoretically and empirically. We find that: (i) normalization of Mendeley reader counts is necessary, (ii) the MDNRS is able to normalize Mendeley reader counts in several disciplines, and (iii) the MNRS is able to normalize Mendeley reader counts in all disciplines. This generally favorable result for the MNRS in all disciplines leads to the recommendation to prefer the MNRS over the MDNRS-provided that the user has an external field-classification scheme at hand.

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“…Similar deviations, especially for the humanities, are also visible for citing-side indicators (see Fig. 1F in Bornmann & Marx, 2015).…”

Section: Normalized Reader Impact Of Journalssupporting

confidence: 63%

Normalization of Mendeley reader impact on the reader- and paper-side: A comparison of the mean discipline normalized reader score (MDNRS) with the mean normalized reader score (MNRS) and bare reader counts

Bornmann

Haunschild

2016

Journal of Informetrics

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“…However, we need further studies using other statistical approaches besides the fairness test to investigate the validity of this indicator. These approaches have been published, for example, by Waltman and van Eck (2013b) and Bornmann and Marx (2015). Waltman and van Eck (2013b) proposed the following: "The degree to which differences in citation practices between fields have been corrected for is indicated by the degree to which the normalized citation distributions of different fields coincide with each other.…”

Section: Discussionmentioning

confidence: 99%

Citation score normalized by cited references (CSNCR): The introduction of a new citation impact indicator

Bornmann

Haunschild

2016

Journal of Informetrics

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“…Typically, a paper is written by two or more authors. Investigating co-authorship information on a larger database of scientific publications will support in recognizing a set of researchers who work closely together [53]. In the coauthorship network, each author corresponds to a rectangle and each link between two rectangles of different authors indicates that there is a co-authorship.…”

Section: Cooperation Networkmentioning

confidence: 99%

Supply Chain Integration: A Review and Bibliometric Analysis

Asgari¹,

Hamid²,

Aleebrahim³

2017

Int J Econ Manag Sci

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Methods for the generation of normalized citation impact scores in bibliometrics: Which method best reflects the judgements of experts?

Cited by 109 publications

References 34 publications

Normalization of Mendeley reader impact on the reader- and paper-side: A comparison of the mean discipline normalized reader score (MDNRS) with the mean normalized reader score (MNRS) and bare reader counts

Normalization of Mendeley reader impact on the reader- and paper-side: A comparison of the mean discipline normalized reader score (MDNRS) with the mean normalized reader score (MNRS) and bare reader counts

Citation score normalized by cited references (CSNCR): The introduction of a new citation impact indicator

Supply Chain Integration: A Review and Bibliometric Analysis

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