Brief update for GIST Open data group

1. Semantic Web Overview Open Data Group – 23 rd Feb 2011 @ianibbo This work is licensed under a Creative Commons Attribution 3.0 Unported License.

3. My ability to describe what I know

7. Ability to describe unforeseen classes

9. <In some store>

10. Then ask some questions

12. Updating Group Operations on Tabular Data more of an issue

13. Frequent/atomic/isolated Updates (anecdotally)

14. Transactional Capabilities

15. Modern Search Capabilities – Spatial, Text, other.

17. Coordination is still needed – This is not a free-for-all – Honest!

18. Provenance of data sets (Resource provenance good)

20. <Ian> <MemberOf> <GistFoundation>

21. <GistOpenDataMeetup2> <Date> '23-Feb-2011#date'

22. <Ian> <FavoriteDrink> <Moonshine>

23. <GISTLab> <MaxCapacity> '70#int'

24. <GISTLab> <Hosted > <GistOpenDataMeetup1>

25. <GISTLab> <Hosted > <GistOpenDataMeetup2>

26. <GISTLab> <Hosted> <GistOpenDataMeetup3>

28. ISBN's, ISSNs - urn:issn:1535-3613

31. <URI> <URI> <URI|Literal>

33. http://purl.org/dc/elements/1.1/creator

36. Understood over the internet

37. Descriptions which can be used in many different ways

38. Details Descriptions & Descriptive Bindings - RDFXML <rdf:RDF xmlns:rdf=&quot;http://www.w3.org/1999/02/22-rdf-syntax-ns#&quot; xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot;> <rdf:Description rdf:about=&quot;http://media.example.com/audio/guide.ra&quot;> <dc:creator>Rose Bush</dc:creator> <dc:title>A Guide to Growing Roses</dc:title> <dc:description>Describes process for planting and nurturing different kinds of rose bushes.</dc:description> <dc:date>2001-01-20</dc:date> </rdf:Description> </rdf:RDF>

39. Details Descriptions & Descriptive Bindings - RDFa <div xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot;> <div about=&quot;/alice/posts/trouble_with_bob&quot;> <h2 property=&quot;dc:title&quot;>The trouble with Bob</h2> <h3 property=&quot;dc:creator&quot;>Alice</h3> ... </div> <div about=&quot;/alice/posts/jos_barbecue&quot;> <h2 property=&quot;dc:title&quot;>Jo's Barbecue</h2> <h3 property=&quot;dc:creator&quot;>Eve</h3> ... </div> </div>

41. Updates / Static

42. Public / Private

43. Provenance

44. What is a triple/quad store, why is it special

45. RDF Changesets

47. Dataset definition, stating what RDF graph(s) are being queried

48. A result clause, identifying what information to return from the query

49. The query pattern, specifying what to query for in the underlying dataset

50. Query modifiers, slicing, ordering, and otherwise rearranging query results

51. Details Query Languages & Servers - SPARQL PREFIX foo: <http://example.com/resources/> ... # dataset definition FROM ... # result clause SELECT ... # query pattern WHERE { ... } # query modifiers ORDER BY ...

52. Details Query Languages & Servers - SPARQL prefix sch-ont: <http://education.data.gov.uk/def/school/> prefix spatial: <http://www.w3.org/2003/01/geo/wgs84_pos#> SELECT ?name ?district ?postcode ?lat ?long ?openDate ?email ?urbanRural ?ratio WHERE { ?school a sch-ont:School; sch-ont:establishmentName ?name; sch-ont:districtAdministrative ?district; sch-ont:districtAdministrative <http://statistics.data.gov.uk/id/local-authority-district/00CG> . OPTIONAL { ?school sch-ont:openDate ?openDate; } OPTIONAL { ?school spatial:long ?long; } OPTIONAL { ?school spatial:lat ?lat; } OPTIONAL { ?school sch-ont:SCUpreferredemail ?email; } OPTIONAL { ?school sch-ont:urbanRural ?urbanRural; } OPTIONAL { ?school sch-ont:pupilTeacherRatio ?ratio; } } ORDER BY ?name http://services.data.gov.uk/education/sparql

53. The coolest thing done with your data will be done by somebody else. Semantic Web should make this much less painful for that somebody else

55. Inferencing

57. http://www.cambridgesemantics.com/2008/09/sparql-by-example/