Grading scheme for open data
‘Tim Berners-Lee has suggested a 5-star scheme for grading the quality of open data on the web, for which the highest ranking is Linked Open Data:’
- 1 star: data is openly available in any format.
- 2 stars: data is available in a structured format, such as Microsoft Excel file format (.xls).
- 3 stars: data is available in a non-proprietary structured format, such as Comma-separated values (.csv).
- 4 stars: data follows W3C standards, like using RDF and employing URIs.
- 5 stars: all of the other, plus links to other Linked Open Data sources.
See Linked Data terminology and technologies, Interoperability