Étiquette : Scientometrics

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Fractional counting of citations in rese…

Fractional counting of citations in research evaluation: An option for cross- and interdisciplinary assessments :

“In the case of the scientometric evaluation of multi- or interdisciplinary units one risks to compare apples with oranges: each paper has to assessed in comparison to an appropriate reference set. We suggest that the set of citing papers first 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”.

URL : http://arxiv.org/abs/1012.0359

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OpenAccess Statistics: Alternative Impac…

OpenAccess Statistics: Alternative Impact Measures for Open Access documents? An examination how to generate interoperable usage information from distributed Open Access services :

“Publishing and bibliometric indicators are of utmost relevance for scientists and research institutions as the impact or importance of a publication (or even of a scientist or an institution) is mostly regarded to be equivalent to a citation-based indicator, e.g. in form of the Journal Impact Factor or the Hirsch-Index. Both on an individual and an institutional level performance measurement depends strongly on these impact scores. This contribution shows that most common methods to assess the impact of scientific publications often discriminate Open Access publications – and by that reduce the attractiveness of Open Access for scientists. Assuming that the motivation to use Open Access publishing services (e.g. a journal or a repository) would increase if these services would convey some sort of reputation or impact to the scientists, alternative models of impact are discussed. Prevailing research results indicate that alternative metrics based on usage information of electronic documents are suitable to complement or to relativize citation-based indicators. Furthermore an insight into the project OpenAccess- Statistics OA-S is given. OA-S implemented an infrastructure to collect document-related usage information from distributed Open Access Repositories in an aggregator service in order to generate interoperable document access information according to three standards (COUNTER, LogEc and IFABC). The service also guarantees the deduplication of users and identical documents on different servers. In a second phase it is not only planned to implement added services like recommender.”

URL : http://eprints.rclis.org/19068/