Difference between revisions of "RDFa"
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| − | * http://www.w3.org/ | + | * http://www.w3.org/2006/07/SWD/RDFa/primer/ |
| − | * http://www.w3.org/ | + | * http://www.w3.org/2006/07/SWD/RDFa/syntax/ |
* [http://rdfa.info RDFa.info] | * [http://rdfa.info RDFa.info] | ||
* [http://en.wikipedia.org/wiki/RDFa Wikipedia article] | * [http://en.wikipedia.org/wiki/RDFa Wikipedia article] | ||
Revision as of 00:48, 1 December 2006
RDFa allows building metadata into XHTML and other XML documents with attributes. See also RelLicense. MozCC 2 reads RDFa.
References
- http://www.w3.org/2006/07/SWD/RDFa/primer/
- http://www.w3.org/2006/07/SWD/RDFa/syntax/
- RDFa.info
- Wikipedia article
Presentations
- http://ben.adida.net/presentations/w3c-2006-04-06/html/w3c
- http://ben.adida.net/presentations/semantic-2006-03-08.pdf
- http://skimstone.x-port.net/introduction-to-rdfa
Content discovery
A key use case for RDFa is the annotation of resources included or embedded in web pages. Existing annotations apply to the current document. For example, http://example.com/foo contains
<a rel="license" href="http://creativecommons.org/licenses/by/2.5/">cc</a>
This says that http://example.com/foo is licensed under CC BY 2.5. What about http://example.com/bar.jpg which is displayed in http://example.com/foo via a &tl;img src="/bar.jpg"> element?
To specify that bar.jpg is licensed, even under a different license, we can qualify the link with an about attribute:
<a about="/bar.jpg" rel="license" href="http://creativecommons.org/licenses/by-nc/2.5/">cc</a>
Found in http://example.com/foo this says http://example.com/bar.jpg is licensed under CC BY-NC 2.5.
See beyond the current document in the RDFa primer for more examples.
The RDFa highlighter bookmarklet provides visual cues for statements about included resources.
