Embedded RDF

[http://research.talis.com/2005/erdf/wiki/Main/RdfInHtml eRDF] (embedded RDF) is a syntax for writing HTML in such a way that the information in the HTML document can be extracted (with an eRDF parser or XSLT stylesheet) into Resource Description Framework.

It was invented by [http://iandavis.com/ Ian Davis] in 2005, and partly inspired by microformats, a simplified approach to semantically annotate data in websites.

See also

* RDFa, W3C's approach at embedding RDF
* GRDDL, a way to extract (annotated) data out of XHTML and XML documents and transform it into an RDF graph

External links

Resources

* [http://getsemantic.com/wiki/ERDF Get Semantic wiki]

Tools for eRDF

* [http://simile.mit.edu/wiki/Erdf_scraper eRDF scraper for Simile's PiggyBank]
* [http://arc.web-semantics.org/ ARC PHP classes, includes eRDF parser]
* [http://librdf.org/raptor/ Raptor RDF parser toolkit, supports eRDF]
* [http://research.talis.com/2005/erdf/extract-rdf.xsl an XSLT stylesheet to transform eRDF in XHTML to RDF/XML]
* [http://userscripts.org/scripts/show/8260 eRDF Greasemonkey script to detect, and optionally parse eRDF in the page] (looks for the eRDF profile on the head element)

Web Services that extract RDF from eRDF

* [http://arc.web-semantics.org/demos/erdf-extract ARC eRDF extract]
* [http://purl.org/NET/erdf/extract Talis eRDF extract]
* [http://triplr.org/ triplr eRDF extract]