Abstract: Policy-analyses require a range of activities like relating data to each other, visualizing its impact and interpretation of the results. The linking of data can be done in various ways. In this paper we postulate that merely linking data is not enough to make use of open data and that metadata are key enablers for the effective use of linked open data (LOD) in policy-making. Metadata are computer-readable data about a dataset and contain information for the discovery, the context and the detailed use of data. We illustrate the value of metadata by presenting two use cases, derive requirements from the use cases and provide elements of an architecture. The paper shows that metadata help to fulfill the requirements for the use of LOD and that the Common European Research Information Format (CERIF) and LOD can be used to build the architecture for these metadata.@en

Abstract: Open data have been recognized as a strategic tool for governments all over the world, in their efforts to increase citizen trust, engagement and collaborative action. Despite their significance and the political support at EU level, many challenges remain open for member states in their effort to provide on-line services for the discovery and use of public sector datasets. This workshop is focused on obtaining requirements from (potential) users of open public sector data for the use of these data. The requirements are obtained by conducting a questionnaire and by presenting and discussing the first results of this questionnaire. Furthermore, the benefits and restrictions that are typical for currently available open public sector data that are used by scientific communities and citizens are discussed. In particular the role of meta-data and their role for citizen engagement are discussed and paradigms for open governmental data annotation and provision are presented. Participants are asked to provide their view on benefits and restrictions of open governmental data and directions for e-Infrastructure projects.@en