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__NOTOC__ {{#widget:Test}} {{#widget:TagCloud}} == Extracting Semantic Annotations== Typically, applications need to extract semantic annotations from the web pages and use them to perform artificial reasoning. <div class=”getschema-container” style=”background-color:#f8f8f8″> === Microdata2RDF Service === 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”’] {{#widget:MicrodataExtractor}} <div class=”row”> {{#widget:MicrodataTests}} </div> === RDFa2RDF Service === 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/”’] {{#widget:RDFaExtractor}} {{#widget:RDFaLiteTests}} <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> <div class=”row padded”> <div class=”half padded”> {{#widget:SlideShare |id=30349998 |width=615 |height=470 }} </div> <div class=”half padded”> == Other Tools == * ”'[http://getschema.org/microdataextractor/about Microdata2RDF] a REST service returning N-Triples, N3 and JSON”’ * ”'[http://getschema.org/rdfaliteextractor-about/ Rdfa2RDF] a REST service returning N-Triples, N3 and JSON ”’ * [http://www.google.com/webmasters/tools/richsnippets Rich Snippets Testing Tool] * [http://aksw.org/Projects/RDFaCE RDFa Content Editor] * [http://www.microdatagenerator.com/ Microdata Generator] * [http://schema-creator.org/ Schema Creator] * [http://schemaforwordpress.com/ Schema for WordPress] * [https://github.com/indexzero/node-schema-org A node.js library that retrieves, parses and provides all schemas from schema.org] * [https://github.com/linclark/MicrodataPHP A PHP Library to Extract Microdata from HTML] * [http://gitorious.org/microdatajs/microdatajs MicrodataJS] * [http://schema.rdfs.org/tools.html Schema.org Tools] at rdfs.org * [http://foolip.org/microdatajs/live/ Live Microdata] * [http://aksw.org/Projects/RDFaCE RDFaCE-Lite WYSIWYM content editor] supporting both RDFa and Microdata (with Schema.org vocabulary). Published as WordPress plugin. </div> </div> [http://ruletheweb.org <span style=”-moz-box-shadow:inset 0px 1px 0px 1px #fff6af; -webkit-box-shadow:inset 0px 1px 0px 1px #fff6af; box-shadow:inset 0px 1px 0px 1px #fff6af; background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #ffec64), color-stop(1, #ffab23) ); background:-moz-linear-gradient( center top, #ffec64 5%, #ffab23 100% ); background-color:#ffec64; -moz-border-radius:6px; -webkit-border-radius:6px; border-radius:6px; border:1px solid #ffaa22; display:inline-block; color:#333333; font-family:Verdana; font-size:15px; font-weight:bold; padding:6px 16px; text-decoration:none; text-shadow:1px 1px 0px #ffee66;”>RuleTheWeb!</span>] is a Firefox extension consuming Schema.org annotations. {|border=”1″ valign=”top” style=”width: 100%;” ! style=”width:100%; padding:5px;”|Learn More |- valign=”top” | 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. * [[Readings on Semantic Annotations | Others about Semantic Annotations]] * [[Not Appropriate Usage Examples]] * [[List of websites using Schema.org | List of websites using Schema.org markup]] * http://www.bing.com/webmaster/help/marking-up-your-site-with-structured-data-3a93e731 |}
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