Quality interoperability within digital libraries: the DL.org perspective

This paper considers the quality of interoperability between digital libraries and possible metrics for measuring these. It presents the Dl.org Quality Core Model and the final results of a quality interoperability survey across some leading digital libraries.Quality is the most dynamic aspect of DLs, and becomes even more complex with respect to interoperability. This paper formalizes the research motivations and hypotheses on quality interoperability conducted by the Quality Working Group within the EU-funded project DL.org (http://www.dlorg.eu/). After providing a multi-level interoperability framework – adopted by DL.org - the authors illustrate key-research points and approaches on the way to the interoperability of DLs quality, grounding them in the DELOS Reference Model. By applying the DELOS Reference Model Quality Concept Map to their interoperability motivating scenario, the authors subsequently present the two main research outcomes of their investigation - the Quality Core Model and the Quality Interoperability Survey