RDFa

Resource Description Framework as attributes(commonly abbreviated as RDFa) is the latest development in combining RDF techonology with standard HTML pages.

Specification

• RDFa Syntax: http://www.w3.org/2006/07/SWD/RDFa/syntax/
• HTML+RDFa 1.1: http://www.w3.org/TR/rdfa-in-html/
• RDFa API: http://www.w3.org/2010/02/rdfa/sources/rdfa-dom-api/
• Rdfa-use-cases: http://rdfa.info/wiki/Rdfa-use-cases

RDF EASE

GRDDL + RDFa

• RDF Extracted Attributes from Styled Elements (RDF-EASE): http://buzzword.org.uk/2008/rdf-ease/spec

Editors

• WYMeditor - prototype: http://files.wymeditor.org/wymeditor/trunk/src/examples/15-rdfa-editor.html
• TopBraid is now also an RDFa Editor: http://composing-the-semantic-web.blogspot.com/2007/01/topbraid-is-now-also-rdfa-editor.html

Data

• RDFa of Ilion GRBP Database (Individual Records for Greek Roman and Byzantine Pottery at Ilion): http://classics.uc.edu/troy/grbpottery/database.html

EXAMPLES

• Digital Bazaar RDFa Media spec (written in RDFa): http://digitalbazaar.com/media
• MySpace using RDfa: http://rdfa.info/2009/03/27/myspace-using-rdfa/
• Live Microdata: http://foolip.org/microdatajs/live/
• Online retail - How Best Buy is using (RDFa) Semantic Technology to define a new trend (15% increase in CTR from Yahoo! SearchMonkey results): http://priyankmohan.blogspot.com/2009/12/online-retail-how-best-buy-is-using.html | EXAMPLE
• Boost YouTube Videos Traffic with RDFa Rich Snippets: http://www.seoworkers.com/seo-articles-tutorials/youtube-videos-rdfa.html

rNews

• rNews (RDFa NewsML) - Embedded Metadata For The News Industry: http://dev.iptc.org/rNews-Introduction-to-rNews
• rNews - Implementation Guide: http://dev.iptc.org/rNews-Implementation-Guide
• rNews - Sample story: http://dev.iptc.org/rNews-Sample-Story
• rNews - genre: http://cv.iptc.org/newscodes/genre/

Tools

• W3C - RDFa Distiller and Parser: http://www.w3.org/2012/pyRdfa/
• Yahoo! SearchMonkey -- RDFa Checker: http://developer.search.yahoo.com/help/objects/product
• W3C Semantic Extractor: http://www.w3.org/2003/12/semantic-extractor.html
• RDFa Online Parser: https://rdf-in-html.appspot.com

Sindice

• RDF and RDFa Semantic Web crawler/index: http://sindice.com/

Yahoo!

• YAHOO - RDFa Standard Enhanced Results: http://developer.search.yahoo.com/start
• Yahoo! -- RDFa in Video guide/tool: http://developer.search.yahoo.com/help/objects/video

Google

• Rich Snippets Testing Tool: http://www.google.com/webmasters/tools/richsnippets?url=http%3A%2F%2Fbryancopeland.com&view=cse
• Google - People concept (with markup in RDFa, Microformats, HTML5 Microdata): http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=146646
• Google Rich Snippets Tips and Tricks: http://knol.google.com/k/google-rich-snippets-tips-and-tricks#

Drupal

• Drupal + RDFa = Semantic Web: http://semantic-drupal.com/
• Drupal RDF Mapping API: http://api.drupal.org/api/group/rdf/7
• A roadmap for RDFa in Drupal 7: http://groups.drupal.org/node/16597
• RDF/RDFa module: http://drupal.org/node/574624
• Drupal 7 BETA demo: http://drupalrdf.openspring.net/

Yandex

Yandex - Russia's #1 Search Engine: http://www.yandex.com/ Валидатор микроразметки (Yandex Microformat extractor): http://webmaster.yandex.ru/microtest.xml

Resources

• RDFa 1.1 Core - Initial Context: http://www.w3.org/2011/rdfa-context/rdfa-1.1 (schemas loaded by default)
• Ubiquity RDFa bookmarklet: http://ubiquity-rdfa.googlecode.com/svn/trunk/install-checker.html
• Ubiquity RDFa Twitter example: http://ubiquity-rdfa.googlecode.com/svn/trunk/_samples/blog-twitter.html
• JAVASCRIPT -- green-turtle: http://code.google.com/p/green-turtle/ (implementation of the RDFa 1.1 API for browsers)
• "java-rdfa" lib: https://github.com/shellac/java-rdfa
• JAVA - Lightweight RDFa Parser: http://www-sop.inria.fr/edelweiss/wiki/wakka.php?wiki=RDFaParser
• JAVA - Apache Any23: http://any23.apache.org/ (n3/RDF/RDFa/eRDF/Microformats/HTML5-Microdata/CSV parser)
• PHP - ARC2 RDFa/eRDF Parser: https://github.com/semsol/arc2/wiki/Extracting-RDF-from-HTML
• Perl - RDFa Parser: https://metacpan.org/module/RDF::RDFa::Parser

Tutorials

• W3C's RDFa Primer: http://www.w3.org/TR/xhtml-rdfa-primer/
• RDFa Tutorial: http://ben.adida.net/presentations/www2008-rdfa/#(9)
• RDFa In A Nutshell V2: http://www.slideshare.net/fabien_gandon/rdfa-in-a-nutshell-v1
• W3C - RDFa Primer : http://www.w3.org/TR/xhtml-rdfa-primer/
• W3C - RDFa for HTML Authors: http://www.w3.org/MarkUp/2009/rdfa-for-html-authors
• RDFa for HTML Authors: http://www.w3.org/MarkUp/2009/rdfa-for-html-authors#Talking1
• Microdata and RDFa Living Together in Harmony: http://www.jenitennison.com/blog/node/165

External Links

• wikipedia: RDFa
• RDFa Info Blog (Tracking the latest developments and projects using RDFa): http://rdfa.info/
• XML.com's Introduction to RDFa (Part 1): http://www.xml.com/pub/a/2007/02/14/introducing-rdfa.html
• XML.com's Introduction to RDFa (Part 2): http://www.xml.com/pub/a/2007/04/04/introducing-rdfa-part-two.htm
• Nice video shows how hidden structured data from the Drupal content management system can lead to semantic search: http://www.johnbreslin.com/blog/2009/03/18/nice-video-shows-how-hidden-structured-data-from-the-drupal-content-management-system-can-lead-to-semantic-search/
• RDFa.info: http://rdfa.info/
• RDFa - The Five Key Takeaways : http://www.brighthub.com/internet/web-development/articles/26622.aspx
• RDF-ization - Is That What I’ve Been Up To?: http://ianlumb.wordpress.com/2008/10/07/rdf-ization-is-that-what-ive-been-up-to/
• Mother and baby doing well: http://www.semanticuniverse.com/blogs-mother-and-baby-doing-well.html
• More RDFa goodness from UK government web-sites: http://webbackplane.com/mark-birbeck/blog/2009/04/23/more-rdfa-goodness-from-uk-government-web-sites
• Introducing RDFa: http://www.xml.com/pub/a/2007/02/14/introducing-rdfa.html
• Using RDFa in XHTML 1: http://internet-apps.blogspot.com/2007/02/using-rdfa-in-xhtml-1.html
• TopBraid is now also an RDFa Editor : http://composing-the-semantic-web.blogspot.com/2007/01/topbraid-is-now-also-rdfa-editor.html
• RDFa and HTML5's Microdata: http://realtech.burningbird.net/semantic-web/rdf-and-rdfa/rdfa-and-html5s-maxwells-silver-hammer
• RDFa Editor Presentation: http://www.ithoughts.de/rdfa-editor-presentation/
• This is your site. This is your site on HTML5 (with RDFa): http://realtech.burningbird.net/web/page-markups/this-is-your-site-on-html5
• Rotten Tomatoes Shows How To Use RDFa And OpenGraph Protocol: http://www.semanticweb.com/on/rotten_tomatoes_shows_how_to_use_rdfa_and_ogp_160160.asp
• Top Reasons For Implementing RDFa Search Engine Optimization: http://www.devx.com/semantic/Article/45052?comment=37279-0
• Create enhanced results on Yahoo! and Facebook with Share markup: http://www.niallkennedy.com/blog/2009/03/enhanced-social-share.html
• Microformats, Microdata and RDFa for Rich Snippets: http://www.websitemagazine.com/content/blogs/posts/pages/microformats-microdata-and-rdfa-for-rich-snippets.aspx
• HTML5/RDFa Arguments: http://www.jenitennison.com/blog/node/124
• Lesson 11 - RDFa and Microformats: http://fgamedia.org/faculty/rdcormia/COIN74A/class11b.htm
• Microformats vs RDFa vs Microdata: http://blog.foolip.org/2009/08/23/microformats-vs-rdfa-vs-microdata/
• How Best Buy is using Semantic Technology to define a new trend: http://priyankmohan.blogspot.com/2009/12/online-retail-how-best-buy-is-using.html
• Introduction to RDFa 1.1 Lite: http://semanticweb.com/rdfa-1-1-lite_b24088
• BREAKING NEWS - Schema.org announces intent to support RDFa Lite!: http://semanticweb.com/breaking-schema-org-announces-intent-to-support-rdfa-lite_b24623
• Schema.org, Microdata, RDFa, and Black Friday at BestBuy: http://semanticweb.com/schema-org-microdata-rdfa-and-black-friday-at-bestbuy_b24643
• Google Makes Algorithmic Updates To Reviews In Search: https://www.mediapost.com/publications/article/340738/google-makes-algorithmic-updates-to-reviews-in-sea.html

See Also

Semantic Web | Microdata | Microformats | JSON+LD | xHTML