Modelling DL Quality: a Comparison between Approaches: the DELOS Reference Model and the 5S Model

Digital libraries have become a key part of the global information infrastructure, building upon over 15 years of R&D efforts. To support further advancement, and to aid education in the field, work on formal foundations has proceeded, leading to the DELOS Reference Model and the 5S Framework. This paper describes and compares these models, in particular with respect to the concept of quality, and shows how the models can interoperate. It presents mappings of similar concepts between the models. It also shows what (currently) is in one model but not the other. It is hoped that, based on this effort, each model will develop further – with better coverage of quality.