title: Identifying audiences of e-infrastructures--tools for measuring impact.
abstract: Research evaluation should take into account the intended scholarly and non-scholarly audiences of the research output. This holds too for research infrastructures, which often aim at serving a large variety of audiences. With research and research infrastructures moving to the web, new possibilities are emerging for evaluation metrics. This paper proposes a feasible indicator for measuring the scope of audiences who use web-based e-infrastructures, as well as the frequency of use. In order to apply this indicator, a method is needed for classifying visitors to e-infrastructures into relevant user categories. The paper proposes such a method, based on an inductive logic program and a bayesian classifier. The method is tested, showing that the visitors are efficiently classified with 90% accuracy into the selected categories. Consequently, the method can be used to evaluate the use of the e-infrastructure within and outside academia.
authors.affiliation: Department of Organization Sciences and Network Institute, VU-University Amsterdam, Amsterdam, The Netherlands.
authors.forename: Daphne
authors.initials: D
authors.lastname: Duin
authors.forename: David
authors.initials: D
authors.lastname: King
authors.forename: Peter
authors.initials: P
authors.lastname: van den Besselaar
mesh_terms: D001499:Bayes Theorem; D044822:Biodiversity; D006801:Humans; D020407:Internet / Q000706:statistics & numerical data*; D040541:Marketing / Q000706:statistics & numerical data*; D012106:Research / Q000706:statistics & numerical data*