Unambiguous Identifiers for Semantic Web

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A Uniform Resource Identifier (URI) is a compact sequence of characters that identifies an abstract or physical resource. -Tim Berners-Lee

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Unambiguous Identifiers for Semantic Web

  1. 1. Unique Unambiguous Identifiers forSemantic WebFariz Dararimrlogix
  2. 2. What They Look Like2@mrlogixhttp://dbpedia.org/resource/New_York_Cityhttp://data.nytimes.com/N46020133052049607171http://rdf.freebase.com/ns/en.new_yorkhttp://sws.geonames.org/5128581/
  3. 3. What They Identify*3@mrlogixhttp://dbpedia.org/resource/New_York_Cityhttp://sws.geonames.org/5128581/http://data.nytimes.com/N46020133052049607171http://rdf.freebase.com/ns/en.new_york*Hence unique as on title slide. See also this slide by TBL.
  4. 4. Technically, these things are called URIs:4@mrlogixhttp://dbpedia.org/resource/New_York_Cityhttp://data.nytimes.com/N46020133052049607171http://rdf.freebase.com/ns/en.new_yorkhttp://sws.geonames.org/5128581/Then, what is a URI?A Uniform Resource Identifier (URI) is a compact sequence of charactersthat identifies an abstract or physical resource.Tim Berners-Lee (W3C)
  5. 5. So, URIs are used to identify.Therefore, it is perfectly fine if we could notretrieve the New York City by accessingsome URI of the city, say,http://dbpedia.org/resource/New_York_City5@mrlogixDefinition of identify - byto serve as a means of identification for
  6. 6. Instead, what we’d get is a description aboutthe New York City by DBpedia:6@mrlogixSo, URIs are used to identify..
  7. 7. Or in format:7@mrlogixSo, URIs are used to identify...
  8. 8. More Examples of URIs8@mrlogix
  9. 9. Congrats!You just learned about URIs that are used inall the four basic principles of Semantic Web:9Source@mrlogix
  10. 10. Congrats!!You just learned about URIs that are used inthe Semantic Web Cake:10@mrlogixSee real picture here
  11. 11. Credits• URI Definition http://tools.ietf.org/html/rfc3986• 4 Basic Principles of Semantic Web (aka. Linked Data) http://dig.csail.mit.edu/2007/Talks/0108-swuri-tbl• URIs Examples http://linkeddatabook.com/editions/1.0/• URIs for Semantic Web http://www.med.nyu.edu/research/pdf/mainim01-1484312.pdf• SW Levels http://www.w3.org/2001/12/semweb-fin/swlevels.png11@mrlogix
  12. 12. Credits (Images)• CC-BY Icon http://upload.wikimedia.org/wikipedia/commons/thumb/1/16/CC-BY_icon.svg/120px-CC-BY_icon.svg.png• Twitter Icon http://www.iconfinder.com/icondetails/82332/128/twitter_icon• Barcode Icon http://www.iconfinder.com/icondetails/40683/128/barcode_icon• SW Icon http://www.w3.org/Icons/SW/sw-cube.png• NYC Photohttp://th03.deviantart.net/fs71/PRE/f/2011/074/7/3/new_york_city_wallpaper_by_angelmaker666-d3boylj.jpg• Child Photo http://www.deankwilson.com/Blog_images/questioning_child_face_left.jpg• TBL Photo http://mp.blogs.com/.a/6a00d83451d22169e20112796bd8f428a4-200wi• Hand Icon http://www.iconfinder.com/icondetails/85401/128/thumb_up_icon• RDF Icon http://www.w3.org/Icons/SW/Buttons/sw-rdf-blue.png• SW Cake http://farm3.staticflickr.com/2280/2366732985_62f63e4179_z.jpg• Reading Robothttp://www.sri.com/sites/default/files/imagecache/slide_home_main/project/slides/faust_mp_010712_490x356.jpg12@mrlogix

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