Open government data (OGD) refers to making public sector information freely available in open formats and ways that enable public access and facilitate exploitation. Lately, a large number of OGD initiatives launched worldwide aiming to implement one-stop portals acting as single points of access to governmental data. At the same time, the so-called linked data technologies emerged aiming at publishing structured data on the web in such a way that enables semantically enriching data, uniform access to data, and linking of data. In this paper, we first propose a classification scheme for OGD initiatives based on the relevant literature. We thereafter, review and analyse OGD initiatives based on the proposed scheme. We finally present an architecture and prototype implementation for the most advanced OGD class in our scheme, which enables linking decentralised data.

An increasing number of governments worldwide understand the importance of electronic participation (eParticipation) i.e. the importance of the use of information and communication technologies (ICTs) to more actively engage citizens in democratic processes. As a result, the number of eParticipation projects and relevant tools is rapidly growing. This makes the need for recording and reviewing such projects and tools both timely and critical. In this paper we present a framework for assessing eParticipation projects and tools. The proposed framework is based on distinguishing between participation areas and ICT support for these areas and suggests assessment to be performed using specific templates that are developed for this purpose. We further apply this framework in order to assess 19 relevant European Commission co-funded research projects. The preliminary results suggest that research in the domain of eParticipation is at its early stages. More specifically, the results suggest that projects focus on the more elementary eParticipation areas, such as information provision and opinion polling, while there is a trend for using multiple access channels, e.g. mobile technologies

Public sector information constitutes a valuable primary material for added-value services and products, which however remains unexploited. Recently, Open Government Data (OGD) initiatives emerged worldwide aiming to make public data freely available to everyone, without limiting restrictions. Despite its potential however there is currently a lack of roadmaps, guidelines and benchmarking frameworks to drive and measure OGD progress. This is particularly true as proposed stage models for measuring eGovernment progress focus on services and do not sufficiently consider data. In this paper, we capitalize on literature on eGovernment stage models and OGD initiatives to propose a stage model for OGD. The proposed model has two main dimensions, namely organizational & technological complexity and added value for data consumers. We anticipate the proposed model will open up a scientific discussion on OGD stage models and will be used by practitioners for constructing roadmaps and for benchmarking just like the European Union stage model is currently used for measuring public service online sophistication.