Alternative Impact Measures for Open Acc…

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 is mostly regarded to be equivalent
to a citation based indicator, e.g. in form of the Journal Impact Factor or the Hirsch-Index.
Performance measurement both on an individual and institutional level 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 Open Access Statistics OAS is given. OAS
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,
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 as
recommender features, but also to evaluate alternative impact metrics based on usage
patterns of electronic documents.


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