From Semantic Web Standards

Revision as of 14:37, 1 October 2012

Publication date: 2008-10-14 Created by: RDFa Working Group List of documents at: http://www.w3.org/standards/techs/rdfa

RDF in Attributes (RDFa)

Overview

RDFa is a specification for attributes to express structured data in XHTML. The rendered, hypertext content of XHTML is reused by the RDFa markup, so that publishers don't need to repeat significant data in the document. Tools can extract that structured data and generate RDF triples for further reuse. RDFa can be considered as another serialization format for RDF, alongside Turtle and RDF/XML.

The separate RDFa Working Group was formed in February 2010 to produce a new version of the RDFa documents (originally developed by the Semantic Web Deployment Working Group). The new set of recommendations (nicknamed RDFa 1.1) have been published in June 2012.

Points for consideration

• RDFa, Fragment Identifiers, and HTTP

Recommended Reading

The official RDFa documents, published in 2008, include a RDFa Primer. The community also maintains a separate RDFa Wiki for further information.

A number of textbooks have been published on RDF, RDFS, and on Semantic Web in general. Please, refer to a separate page listing some of those, as maintained by the community. That list also includes references to conference proceedings and article collections that might be of general interest.

Tools that are listed as relevant to RDFa

(Note that you can browse tools per tool categories or programming languages, too.)

Last modified and/or added

The description of the following tools have been added and/or modified most recently.

• Rhizomer (last modified: 18 March 2013)
• RDFa Extractor (last modified: 22 January 2013)
• pyRdfa, an RDFa 1.1 distiller and parser (last modified: 2 October 2012)
• Callimachus, a Linked Data management system (last modified: 27 April 2012)
• RDFa Developer (last modified: 20 April 2012)

All relevant tools

This is a list of all tools listed on this wiki, and that are marked as relevant to RDFa.

• AllegroGraph RDF Store (triple store, programming environment, reasoner, development environment, rdfs reasoner). Directly usable from Java, LISP, Python, Prolog, C, Ruby, Perl
• Anzo Suite (development environment, programming environment, visualizer, converter). Directly usable from Javascript, Java, .Net
• Callimachus, a Linked Data management system (programming environment, browser, sparql endpoint, special browser, visualizer, development environment). Directly usable from Java, Javascript
• checkrdfa (validator).
• GR-Notify (api).
• GoodRelations Snippet Generator (converter, rdf generator).
• GoodRelations for Joomla (shop extension, rdf generator).
• java-rdfa (rdf generator, converter). Directly usable from Java
• Krextor (rdf generator).
• MSemantic (shop extension, rdf generator).
• OpenLink Virtuoso (triple store, reasoner, rdf generator, sparql endpoint, owl reasoner, rdfs reasoner, rdb2rdf). Directly usable from C, C++, Python, PHP, Java, Javascript, ActionScript, Tcl, Perl, Ruby, Obj-C
• pyRdfa, an RDFa 1.1 distiller and parser (rdf generator, programming environment, converter). Directly usable from Python
• RDF Distiller (converter, rdf generator).
• RDF Translator (converter, rdf generator, api, programming environment). Directly usable from Python
• RDF-RDFa-Parser (rdf generator, programming environment, converter). Directly usable from Perl
• RDF2RDFa Converter (converter, rdf generator).
• RDFa Extractor (rdf generator, api, converter). Directly usable from Javascript
• RDFa Parser (rdf generator, converter). Directly usable from Python
• RDFa Developer (visualizer, validator, rdf generator, special browser). Directly usable from Javascript
• ReDeFer (converter, rdf generator, visualizer).
• RedStore (triple store, sparql endpoint).
• Rhizomer (special browser, rdf or owl browser). Directly usable from Java, Javascript
• Sig.ma (special browser, semantic web browser, search engine). Directly usable from Java, Javascript
• TopBraid Suite (development environment, programming environment, editor, reasoner, owl reasoner, rule reasoner, rdfs reasoner). Directly usable from Flex
• Total Validator (validator).
• … further results