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There is a big buzz around open data today, but for the non-experts it remains an abstract concept.
Let us try to clarify the things by referring to the most universally recognised definition. The home page of the Open Definition project (managed by the Open Knowledge Foundation) contains the following:

“Open means anyone can freely access, use, modify, and share for any purpose (subject, at most, to requirements that preserve provenance and openness).”

The site exposes also a full definition for those who want to know more about that.

And what about open government data? Open Definition is once again helping us:

“Open”” as defined above, in essence material (data) is open if it can be freely used, reused and redistributed by anyone, produced or commissioned by government or government controlled entities.

As we can see, open government data are a subset of open data.


We are proud to announce that the PSI Monitor web site is up and running: a publicly accessible database of requests for the re-use of public sector information (PSI). The underlying legal framework is the Directive on the re-use of public sector information, the so called 'PSI Directive' (2003/98/EC1), amended by Directive 2013/37/EU.

The PSI Directive encourages the Member States to make as much information available for re-use as possibile. As a result in the last few years a number of open data portals at national level are born. Nevertheless the re-use of a significant number of commercially relevant datasets still remains subject to charges and conditions which require a submission of individual requests for re-use, addressed to public sector bodies of the Member States.

The PSI Monitor collects and catalogs these individual requests for re-use on a voluntary basis; therefore all those who have made a request for reuse, whether individual or legal entities, are invited to enter the main information regarding their request into the database.


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A transparent and publicly accessible database of requests for the re-use of public sector information (PSI).

Funded by the European Union

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