Open data: Growing up and getting specific

Open data has been given a lot of attention in the public. In some situation 'open by default' has become established as a core principle, whereas others argue about the limited results and the lack of robust studies demonstrating the value, and point to the risk that open data might turn out to be a short lived policy fad. This special issue contains a variety of research papers addressing this topic from different views and providing recent research results on open data. The papers in this issue deepen the understanding of open data and show that the subject of open data is moving from the general to the study of specifics. The special issue also includes invited papers presented at the first public meeting of the SharePSI project. Share-PSI 2.0 is the European network for the exchange of experience and ideas around implementing open data policies in the public sector.