2012 04-ldow-prov

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Towards interoperability of provenance information on the Web

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2012 04-ldow-prov

  1. 1. <Towards Interoperable ProvenancePublication on the Linked Data Web>prov:wasAttributedTo <Jun Zhao> <Olaf Hartig> Linked Data on the Web. April 16, 2012. Lyon, France 1
  2. 2. <semantic web layered cake 2007> prov:wasAttributedTo <steve bratt> ; prov:wasDerivedFrom <semantic web layered cake 2000> . <> rdf:type prov:Activity ; prov:used <semantic web layered cake 2007>; prov:startedAtTime “2007-01-30T00:00:00” ^^xsd:dateTime . <semantic web layered cake 2000> prov:wasAtrributedTo <Berners-Lee> ; prov:wasGeneratedBy [ rdf:type prov:Activity ; prov:startedAtTime “2000-12-06T00:00:00”^^xsd:dateTime; prov:location <washington d.c> ; ].Linked Data on the Web. April 16, 2012. Lyon, France 2
  3. 3. [ ] prov:wasGeneratedBy [ prov:wasAssociatedWith <http://www.wordle.net/> ; prov:endedAtTime “2012-04-12”^^xsd:dateTime ; ]; prov:wasAttributedTo <jun zhao> . Linked Data on the Web. April 16, 2012. Lyon, France 3
  4. 4. Exchange provenance information among applications Linked Data on the Web. April 16, 2012. Lyon, France 4
  5. 5. sioc:UserAccount _:b0 sioc:account_of sioc:has_creator prov:wasAttributedTo prov:Agent prov:Person foaf:Agent dct:creator foaf:Person prv:HumanActor opmv:Agent .....prv:createdBy prv:DataCreation prv:performedBy _:b1 prefix prv: http://purl.org/net/provenance/ns# prefix prov: http://www.w3.org/ns/prov/ prefix sioc: http://rdfs.org/sioc/ns# prefix opmv: http://pur.org/net/opmv/ns# prefix dct: http://purl.org/dc/terms/ prefix foaf: http://xmlns.com/foaf/0.1/ Linked Data on the Web. April 16, 2012. Lyon, France 5
  6. 6. http://ns.slideshare.net/junzhao/slide-ldow-2012 WHERE to find PROVENANCE? Linked Data on the Web. April 16, 2012. Lyon, France 6
  7. 7. Entity URIhttp://ns.slideshare.net/junzhao/slide-ldow-2012GET //ns.slideshare.net/junzhao/ slide-ldow-2012 HTTP/1.1 HTTP/1.1 200 OKHost: ns.slideshare.net Content-Type: text/turtleAccept: text/turtle Date: Wed, 10 April 2012 10:58:02 GMT Link: http://ns.slideshare.net/junzhao/slide- ldow-2012/provnc/; rel="provenance"; anchor="http://ns.slideshare.net/junzhao/slide- ldow-2012" Content-Length: 18556 [] rdfs:label “presentation for ldow 2012” ; sioc:topic <provenance>, <standard> ; Link: http://ns.slideshare.net/junzhao/slide- .. ldow-2012/provnc/; rel="provenance"; anchor="http://ns.slideshare.net/junzhao/slid e-ldow-2012"Provenance URI Entity URI (optional) Linked Data on the Web. April 16, 2012. Lyon, France 7
  8. 8. What is described? Who generated the forecast of Lyon? Unchanged properties ● Forecast of Lyon ● Creator of the forecast data Changed properties ● Creation time of the forecast ● Raw data used to generateWho generated the forecast the forecast of Lyon onApril 16, 2012? Linked Data on the Web. April 16, 2012. Lyon, France 8
  9. 9. Provenance Entities● A flexible notion from Provenance WG ● With a lifetime and some attributes that do not vary ● Subject to provenance providers / application needs● Firmer notion ● Something of an immutable piece of state ● The Provenance Vocabulary – http://purl.org/net/provenance/ns-20120314 ● OPMV – http://purl.org/net/opmv/ns-20101006 Linked Data on the Web. April 16, 2012. Lyon, France 9
  10. 10. prov:Agent <http://ns.forecast.net/sat> prov:wasAttributedTo<http://ns.forecast.net/lyon> prov:Activity prov:Entity prov:used Forecast _:b0 <http://ns.forecast.net/data-x> Of prov:startedAt Lyon prov:wasGeneratedBy " 2 0 1 2 - 0 4 - 10 T 11 : 0 0 : 0 0 " ^ ^xsd:dateTime Linked Data on the Web. April 16, 2012. Lyon, France 10
  11. 11. prov:Agent <http://ns.forecast.net/sat> prov:wasAttributedTo<http://ns.forecast.net/lyon-10am> <http://ns.forecast.net/data-x>prv:Immutable prv:DataCreation prov:Entity Forecast prv:usedData Of _:b0 " 2 0 1 2 - 0 4 - 10 T 10 : 0 0 : 0 0 " ^ ^xsd:dateTime Lyon at 10am prv:completedAt prv:createdBy <http://ns.forecast.net/sat> prov:Agent prov:wasAttributedTo<http://ns.forecast.net/lyon-11am> <http://ns.forecast.net/data-y>prv:Immutable prv:DataCreation prov:Entity Forecast prv:usedData " 2 0 1 2 - 0 4 - 10 T 11 : 0 0 : 0 0 " ^ Of _:b1 ^xsd:dateTime Lyon at 11am prv:completedAt prv:createdBy Linked Data on the Web. April 16, 2012. Lyon, France 11
  12. 12. Trust TrustProvenance Provenance Provenance Provenance Provenance Provenance Provenance ProvenanceVocabulary Vocabulary Access Access Representation Representation Semantics Semantics Linked Data on the Web. April 16, 2012. Lyon, France 12
  13. 13. Take-home Messages● Provenance publisher: ● Think again about what is described in your provenance ● Make sure “sufficient” historical records can be accessed ● Make sure your provenance is made accessible● Provenance consumer: ● Think again what you are accessing – Does it talk about the same thing you think it does? – Will it stay there forever if you dont cache it locally? Linked Data on the Web. April 16, 2012. Lyon, France 13
  14. 14. WG release expected April 19 Look out to:http://www.w3.org/2011/prov/ Linked Data on the Web. April 16, 2012. Lyon, France 14
  15. 15. Provenance TutorialInternational Provenance and Annotation Workshop (IPAW 2012) Santa Barbara, California June 19, 2012 http://ipaw2012.bren.ucsb.edu/ WG Updates SWPM Workshop at ESWC2012 Heraklion, Greece May 27, 2012 http://sites.google.com/site/swpm2012/ Linked Data on the Web. April 16, 2012. Lyon, France 15
  16. 16. These slides have been created by Jun Zhao and Olaf Hartig This work is licensed under aCreative Commons Attribution-Share Alike 3.0 License (http://creativecommons.org/licenses/by-sa/3.0/) Linked Data on the Web. April 16, 2012. Lyon, France 16

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