RDFa: Interoperable Web Metadata
Ben Adida
Creative Commons / MIT
Implicit Metadata
http://ocw.mit.edu
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Implicit Metadata - the HTML
This document is licensed under a
<a href="http://cc.org/licenses/by/2.5/">
Creative Commons License.
</a>
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and now with RDFa
This document is licensed under a
<a xmlns:cc="http://cc.org/ns#"
rel="cc:license"
href="http://cc.org/licenses/by/2.5/">
Creative Commons License.
</a>
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More Implicit Metadata
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More Implicit Metadata - the HTML
<p>
I'm giving a lightning talk at the
W3C AC Meeting in Edinburgh
on
Sunday, at around 1500 GMT
...
</p>
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And now with RDFa
<p about="#ac_talk" role="cal:Vevent"
xmlns:cal="..."
xmlns:dc="...">
I'm giving a lightning talk at the
<span property="cal:location">
W3C AC Meeting in Edinburgh
</span>
on
<span property="cal:dtstart"
content="20060521T150000Z">
Sunday, at around 1500 GMT
</span>
...
</p>
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So, in practice?
- Get the Calendar bookmarklet.
- Go to a web page with RDFa.
- Invoke the bookmarklet. Enjoy.
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Principles
- All the benefits of RDF:
Independence, Modularity, Evolvability - Don't Repeat Yourself (DRY)
- In-Context Metadata (copy & paste)
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Want More?
Interperable Web Metadata with RDFa:- Wednesday, 24 May 1600 - Dev Track
- Friday, 26 May 1100 - W3C Track
http://rdfa.creativecommons.org
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