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Planet RDF signale cette vidéo: RDFa Basics (disponible sur YouTube).

RDFa in XHTML: Syntax and Processing (W3C)
A collection of attributes and processing rules for extending XHTML to support RDF

"The modern Web is made up of an enormous number of documents that have been created using HTML. These documents contain significant amounts of structured data, which is largely unavailable to tools and applications. When publishers can express this data more completely, and when tools can read it, a new world of user functionality becomes available, letting users transfer structured data between applications and web sites, and allowing browsing applications to improve the user experience: an event on a web page can be directly imported into a user's desktop calendar; a license on a document can be detected so that users can be informed of their rights automatically; a photo's creator, camera setting information, resolution, location and topic can be published as easily as the original photo itself, enabling structured search and sharing."

Via Planet RDF

Des implémentations concrètes de RDFa.

Via Planet RDF

"A new version of the RDFa Primer has been published by the W3C RDFa Task Force. RDFa allows authors to extend their XHTML pages with any kind of RDF data, using some extra XHTML attributes or reusing existing ones. This document will be accompanied soon by a detailed syntax definition and the specification of an XHTML1.1 module."

Via Planet RDF