RDFa 1.1 Core, RDFa Lite and XHTML+RDFa published as Candidate Recommendations

Posted on March 13, 2012 by Ivan Herman

The RDF Web Applications Working Group has published three Candidate Recommendation documents: RDFa Core 1.1, RDFa Lite 1.1 and XHTML+RDFa 1.1.

Together, these documents outline the vision for RDFa in a variety of XML and HTML-based Web markup languages. RDFa Core 1.1 specifies the core syntax and processing rules for RDFa 1.1 and how the language is intended to be used in XML documents. RDFa Lite 1.1 provides a simple subset of RDFa for novice web authors. XHTML+RDFa 1.1 specifies the usage of RDFa in the XHTML markup language.

A number of improvements have been made to RDFa 1.1 over the past year by also working closely with Google, Microsoft, Yahoo!, and the other search engine developers, as well as experts, implementers, or users of the technology at large. Public review and comments have resulted in a number of further refinements to the language that eases the learning curve for beginner Web authors.

The release of these Candidate Recommendation documents is a signal to developers that the Working Group believes that each specification is ready for implementation. Although there are already a number of implementations around, the RDF Web Applications Working Group thus kindly asks for developers across the Web to implement the specification and provide implementation feedback via the RDF Web Applications Working Group mailing list. Developers can also make use of the RDFa test harness which, though still being finalized, already contains over 250 tests, most of which can be used in XML, XHTML, or HTML5.

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About Ivan Herman

Ivan Herman is the Semantic Web Activity Lead at W3C. He graduated as a mathematician at the Eötvös Loránd University of Budapest, Hungary, in 1979. After a brief scholarship at the Université Paris VI he joined the Hungarian research institute in computer science (SZTAKI) where he worked for 6 years. He left Hungary in 1986 and, after a few years in industry, he joined the Centre for Mathematics and Computer Sciences (CWI) in Amsterdam where he has held a tenure position since 1988. He received a PhD degree in Computer Science in 1990 at the Leiden University, in the Netherlands. Ivan joined the W3C team as Head of Offices in January 2001 while maintaining his position at CWI. He served as Head of Offices until June 2006, when he was asked to take the Semantic Web Activity Lead position.