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{{#widget:Twitter Search
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|query=’#schema OR schema.org OR schemaorg OR RDfa
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|title=Semantic Annotations
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|caption=what people say about semantic annotations
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== Extracting Semantic Annotations==
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Typically, applications need to extract semantic annotations from the web pages and use them to perform artificial reasoning.
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<div class="getschema-container"  style="background-color:#f8f8f8">
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=== Microdata2RDF Service ===
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Microdata extractor is a REST web service to extract RDF data from Microdata annotations and provide the semantic information as [http://www.w3.org/2011/rdf-wg/wiki/N-Triples-Format N-Triples], [http://www.w3.org/TeamSubmission/n3/ N3] and [https://dvcs.w3.org/hg/rdf/raw-file/default/rdf-json/index.html RDF-JSON]. The service conforms with the [http://www.w3.org/TR/microdata-rdf/ Microdata2RDF specification] at W3C, but the generation algorithm may be different from the one proposed by the specification. The service is powered by [http://nodejs.org node.js] and uses [https://github.com/tmpvar/jsdom jsdom] library. More information on endpoint, usage and limitations at: [http://getschema.org/microdataextractor/about ”’http://getschema.org/microdataextractor/about”’]
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{{#widget:MicrodataExtractor}}
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{{#widget:MicrodataTests}}
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=== RDFa2RDF Service ===
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RDFa extractor is a REST web service to extract RDF data from [http://www.w3.org/TR/rdfa-lite/ RDFa Lite] annotations and provide the semantic information as [http://www.w3.org/2011/rdf-wg/wiki/N-Triples-Format N-Triples], [http://www.w3.org/TeamSubmission/n3/ N3] and [https://dvcs.w3.org/hg/rdf/raw-file/default/rdf-json/index.html RDF-JSON]. The service is powered by [http://nodejs.org node.js] and uses [https://github.com/tmpvar/jsdom jsdom] library. More information on endpoint, usage and limitations at: [http://getschema.org/rdfaliteextractor-about/ ”http://getschema.org/rdfaliteextractor-about/”’]
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{{#widget:RDFaExtractor}}
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{{#widget:RDFaLiteTests}}
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<p>The service is also listed at the Semantic Web Initiative wiki page  [http://www.w3.org/2001/sw/wiki/RDFa_Extractor http://www.w3.org/2001/sw/wiki/RDFa_Extractor]</p>
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== Other Tools ==
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* ”'[http://getschema.org/microdataextractor/about Microdata2RDF] a REST service returning N-Triples, N3 and JSON”’ 
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* ”'[http://getschema.org/rdfaliteextractor-about/ Rdfa2RDF] a REST service returning N-Triples, N3 and JSON ”’
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* [http://www.google.com/webmasters/tools/richsnippets Rich Snippets Testing Tool]
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* [http://aksw.org/Projects/RDFaCE RDFa Content Editor]
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* [http://www.microdatagenerator.com/ Microdata Generator]
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* [http://schema-creator.org/ Schema Creator]
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* [http://schemaforwordpress.com/ Schema for WordPress]
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* [https://github.com/indexzero/node-schema-org A node.js library that retrieves, parses and provides all schemas from schema.org]
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* [https://github.com/linclark/MicrodataPHP A PHP Library to Extract Microdata from HTML]
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* [http://gitorious.org/microdatajs/microdatajs MicrodataJS]
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* [http://schema.rdfs.org/tools.html Schema.org Tools] at rdfs.org
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* [http://foolip.org/microdatajs/live/ Live Microdata]
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* [http://aksw.org/Projects/RDFaCE RDFaCE-Lite WYSIWYM content editor] supporting both RDFa and Microdata (with Schema.org vocabulary). Published as WordPress plugin.
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</div>
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</div>
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This wiki is a Community of Practice, a community of users, researchers, and developers who are using, designing and developing annotated HTML markup.
 
   
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== What you can do ==
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[http://ruletheweb.org  <span style="-moz-box-shadow:inset 0px 1px 0px 1px #fff6af;
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-webkit-box-shadow:inset 0px 1px 0px 1px #fff6af;
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box-shadow:inset 0px 1px 0px 1px #fff6af;
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background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #ffec64), color-stop(1, #ffab23) );
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background:-moz-linear-gradient( center top, #ffec64 5%, #ffab23 100% );
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background-color:#ffec64;
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-moz-border-radius:6px;
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-webkit-border-radius:6px;
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border-radius:6px;
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border:1px solid #ffaa22;
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display:inline-block;
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color:#333333;
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font-family:Verdana;
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font-size:15px;
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font-weight:bold;
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padding:6px 16px;
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text-decoration:none;
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text-shadow:1px 1px 0px #ffee66;">RuleTheWeb!</span>] is a Firefox extension consuming Schema.org annotations.
   
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* Check any example and you’ll get immediate help to create your web content!
 
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* [[Special:UserLogin | Register]] and contribute with new examples!
 
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* solve everyday annotation problems, debate on discussion pages and document your solutions on the wiki.
 
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* spread the word – blog it, bulletin board it, tell your friends.
 
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* write and share tools (link them up on the wiki)
 
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* inspire others with what you build
 
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* Start concrete discussions helping others to understand:
 
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** [[Microdata |”’how”’]] to use
 
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** [[Schema.org |”’what”’]] to use,
 
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** [[Using Schema.org |”’where”’]] to use and
 
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** [[List of websites using Schema.org| ”’who”’]] uses these concepts
 
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* Send us an email with your case! We will be happy to help you.
 
   
   
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Would you like just acting as anonymous user then start with [[Schema.org]] or check one of our [[Special:PopularPages | popular pages]].
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{|border="1" valign="top" style="width: 100%;"
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! style="width:100%; padding:5px;"|Learn More
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|- valign="top"
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|
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While creating Schema.org markup from plain HTML might be painful for beginners and time consuming for everybody, this wiki will help you to easy get Schema.org markup for the most used concepts of Schema.org.
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* [[Readings on Semantic Annotations | Others about Semantic Annotations]]
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* [[Not Appropriate Usage Examples]]
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* [[List of websites using Schema.org | List of websites using Schema.org markup]]
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* http://www.bing.com/webmaster/help/marking-up-your-site-with-structured-data-3a93e731
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|}

Latest revision as of 14:43, 24 September 2014

Extracting Semantic Annotations

Typically, applications need to extract semantic annotations from the web pages and use them to perform artificial reasoning.

Microdata2RDF Service

Microdata extractor is a REST web service to extract RDF data from Microdata annotations and provide the semantic information as N-Triples, N3 and RDF-JSON. The service conforms with the Microdata2RDF specification at W3C, but the generation algorithm may be different from the one proposed by the specification. The service is powered by node.js and uses jsdom library. More information on endpoint, usage and limitations at: http://getschema.org/microdataextractor/about

Use your own URL:



Or try one of the W3C Test Cases



about this service.

Try our examples

RDFa2RDF Service

RDFa extractor is a REST web service to extract RDF data from RDFa Lite annotations and provide the semantic information as N-Triples, N3 and RDF-JSON. The service is powered by node.js and uses jsdom library. More information on endpoint, usage and limitations at: http://getschema.org/rdfaliteextractor-about/

Use your own URL:



about this service.

Try our examples

The service is also listed at the Semantic Web Initiative wiki page http://www.w3.org/2001/sw/wiki/RDFa_Extractor

Other Tools

RuleTheWeb! is a Firefox extension consuming Schema.org annotations.

Learn More

While creating Schema.org markup from plain HTML might be painful for beginners and time consuming for everybody, this wiki will help you to easy get Schema.org markup for the most used concepts of Schema.org.

Personal tools

Namespaces

Variants

Actions