Difference between revisions of "License Properties"
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| − | In addition to the human readable license deeds and legal code, Creative Commons provides machine readable metadata for licenses. This page describes how to | + | In addition to the human readable license deeds and legal code, Creative Commons provides machine readable metadata for licenses. This page describes how to begin with a license URI and map it to license attributes. |
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== Attributes Overview == | == Attributes Overview == | ||
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A list of permissions, prohibitions and requirements defined by Creative Commons is available at http://creativecommons.org/ns. | A list of permissions, prohibitions and requirements defined by Creative Commons is available at http://creativecommons.org/ns. | ||
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| + | The machine-readable license metadata is described using [RDF]. Each type of attribute corresponds to a predicate: | ||
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| + | * cc:permits | ||
| + | * cc:prohibits | ||
| + | * cc:requires | ||
== Using RDFa == | == Using RDFa == | ||
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With the license URI, an RDFa parser may be used to extract license attributes from the human readable deed. | With the license URI, an RDFa parser may be used to extract license attributes from the human readable deed. | ||
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| + | === Additional Resources === | ||
| + | |||
== "Simple" Mapping == | == "Simple" Mapping == | ||
| + | |||
| + | If parsing the deed is not feasible, it is possible to infer attributes from the license URI. | ||
| + | |||
| + | [[Category:Developer]] | ||
| + | [[Category:Metadata]] | ||
Revision as of 22:40, 7 September 2007
In addition to the human readable license deeds and legal code, Creative Commons provides machine readable metadata for licenses. This page describes how to begin with a license URI and map it to license attributes.
Attributes Overview
License Attributes fall into one of three classes: permissions, prohibitions and requirements. Permissions declare a permission given by the license, above and beyond what default copyright law allows. Prohibitions prohibit a particular use of the work, specifically affecting the scope of the permissions provided by a permission. Requirements describe actions required of user when making use of the permissions.
A list of permissions, prohibitions and requirements defined by Creative Commons is available at http://creativecommons.org/ns.
The machine-readable license metadata is described using [RDF]. Each type of attribute corresponds to a predicate:
- cc:permits
- cc:prohibits
- cc:requires
Using RDFa
RDFa is an editor's draft at W3 which describes a way to serialize [RDF] triples in HTML. Creative Commons includes the appropriate RDFa When selecting a license from http://creativecommons.org/license to indicate that a page is licensed. For example:
<a href="http://creativecommons.org/licenses/by/3.0/" rel="license">Attribution 3.0</a>
The rel="license" attribute indicates that the link specified (the license URL in this case) has special semantic meaning.
With the license URI, an RDFa parser may be used to extract license attributes from the human readable deed.
Additional Resources
"Simple" Mapping
If parsing the deed is not feasible, it is possible to infer attributes from the license URI.
