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Open Data Ladder

Tim Berners-Lee, inventor of Web and initiator of Linked Data, illustrates Open Data distribution scheme as 5 steps of ladder. Each step is given star from one to five stars.

5star-stepsAvailable in web in any format with open license.

Available in web with open license, in form of structured data that is machine readable, such as in XLS or other formats that are included in proprietary format.

Available in web with open license, in form of machine-readable structured data in non-proprietary format, such as CSV instead of XLS.

Available in web with open license, in form of machine-readable structured data in non-proprietary format, using open standard from W3C (RDF and SPARQL) to identify various identifiers, and data users can identify any sources that provide data.

Available in web with open license, in form of machine-readable structured data, using open standard from W3C (RDF and SPARQL) to identify various identifiers, and data users can identify any sources that provide data. In this stage, collaboration occurs that allows data users to serve as data provider as well. [SAM]

src: http://www.w3.org/DesignIssues/LinkedData.html
img src: http://5stardata.info/

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