- Normalization at the field level: fractional counting of citations
- Journal of Informetrics
- Volume | Issue number
- 4 | 4
- Pages (from-to)
- Document type
- Faculty of Social and Behavioural Sciences (FMG)
Faculty of Medicine (AMC-UvA)
- Amsterdam School of Communication Research (ASCoR)
In the case of the scientometric evaluation of multi- or interdisciplinary units one risks to compare apples with oranges: each paper has to be assessed in comparison to an appropriate reference set. We suggest that the set of citing papers can be considered as the relevant representation of the field of impact. In order to normalize for differences in citation behavior among fields, citations can be fractionally counted proportionately to the length of the reference lists in the citing papers. This new method enables us to compare among units with different disciplinary affiliations at the paper level and also to assess the statistical significance of differences among sets. Twenty-seven departments of the Tsinghua University in Beijing are thus compared. Among them, the Department of Chinese Language and Linguistics is upgraded from the 19th to the second position in the ranking. The overall impact of 19 of the 27 departments is not significantly different at the 5% level when thus normalized for different citation potentials.
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