Open Government Data

Open government data means:

  • Data produced or commissioned by government or government controlled entities
  • Data which is open as defined in the Open Definition – that is, it can be freely used, reused and redistributed by anyone.


In the context of Smart Cities, indicator definitions have been used to calculate values that enable the comparison among different cities.

Global change information demands access to data sources and well-documented provenance to provide the evidence needed to build confidence in scientific conclusions and decision making. A new generation of web technology, the Semantic Web, provides tools for that purpose.

A major challenge when working with open government data is managing, connecting, and understanding the links between references to entities found across multiple datasets when these datasets use different vocabularies to refer to identical entities (i.e.: one dataset may refer to Microsoft as "M