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Open data

"A piece of data or content is open if anyone is free to use, reuse, and redistribute it — subject only, at most, to the requirement to attribute and/or share-alike." - Open Knowledge Foundation Network(1)


How open is data?

  Main points

What are we talking about when we mention open data? In public life, open data appears in a variety of ways and it is, therefore, appropriate to distinguish between the various categories of openness. The authors of the brochure 'How open is it'(2) have done this for open access to scientific publications. A similar way can be used to distinguish between the various categories of openness for research data. How open is the data really? What am I allowed to do, and what can I do with it?

Simply making data available – providing access – is often not enough to be allowed to reuse data. The data has to be available in a format and under a license that allows reuse. If, in addition, the data is also available in a linked data format, this results in new possibilities for use. Linked data have a certain structure(3) allowing for technical interoperability of datasets. This way data from a variety of sources can be easily linked.  

The image map below is a representation of the various stages of openness of research data (mouse over the images for the text). An increasing degree of openness makes it easier to gain new knowledge from existing knowledge.  

Stagesofopendata II 1 III IV

"While Open Data refers to data freely available without restrictions, Linked Data is refereeing to machine-readable data and semantically linked. Therefore data can be open but not linked or linked but not open, however if data is open and linked it then becomes Linked Open Data." - COAR(3)

 

  Sources and additional reading

Click to open/close

Sources

  1. Open Knowledge Foundation Network. Open definition. Retrieved from http://opendefinition.org/  
  2. Scholarly Publishing and Academic Resources Coalition and Public Library Science. (2014). How open is it? Open Access spectrum. [eprint]. Retrieved from https://www.plos.org/files/HowOpenIsIt_English.pdf
  3. COAR. (2014, January 10). 7 things you should know about linked  data. Retrieved from http://eprints.rclis.org/21139/2/COAR.pdf
  4. Berners-Lee, T. (2009, June 18). Linked data: design issues. Retrieved from http://www.w3.org/DesignIssues/LinkedData.html

Additional reading


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Elmar Beekman - Open Definition 2.1 stated in http://opendefinition.org/od/2.1/en/ (2017-02-04):
"Knowledge is open if anyone is free to access, use, modify, and share it — subject, at most, to measures that preserve provenance and openness."

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