<Towards Interoperable Provenance Publication on the Linked Data Web>

Transcription

1 <Towards Interoperable Provenance Publication on the Linked Data Web> prov:wasattributedto <Jun Zhao> <Olaf Hartig> Linked Data on the Web. April 16, Lyon, France 1

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 T00:00:00 ^^xsd:datetime. <semantic web layered cake 2000> prov:wasatrributedto <Berners-Lee> ; prov:wasgeneratedby [ rdf:type prov:activity ; prov:startedattime T00:00:00 ^^xsd:datetime; prov:location <washington d.c> ; ]. Linked Data on the Web. April 16, Lyon, France 2

3 [ ] prov:wasgeneratedby [ prov:wasassociatedwith < ; prov:endedattime ^^xsd:datetime ; ] ; prov:wasattributedto <jun zhao>. Linked Data on the Web. April 16, Lyon, France 3

4 Exchange provenance information among applications Linked Data on the Web. April 16, Lyon, France 4

5 sioc:useraccount sioc:has_creator _:b0 sioc:account_of prv:createdby prov:wasattributedto dct:creator prv:datacreation _:b1 prv:performedby prov:agent prov:person foaf:agent foaf:person prv:humanactor opmv:agent... prefix prv: prefix prov: prefix sioc: prefix opmv: prefix dct: prefix foaf: Linked Data on the Web. April 16, Lyon, France 5

6 WHERE to find PROVENANCE? Linked Data on the Web. April 16, Lyon, France 6

7 Entity URI GET //ns.slideshare.net/junzhao/ slide-ldow-2012 HTTP/1.1 Host: ns.slideshare.net Accept: text/turtle HTTP/ OK Content-Type: text/turtle Date: Wed, 10 April :58:02 GMT Link: rel="provenance"; anchor=" Content-Length: [] rdfs:label presentation for ldow 2012 ; sioc:topic <provenance>, <standard> ; Link: rel="provenance";.. anchor=" e-ldow-2012" Provenance URI Entity URI (optional) Linked Data on the Web. April 16, Lyon, France 7

8 What is described? Who generated the forecast of Lyon? Who generated the forecast of Lyon on April 16, 2012? Unchanged properties Changed properties Forecast of Lyon Creator of the forecast data Creation time of the forecast Raw data used to generate the forecast Linked Data on the Web. April 16, Lyon, France 8

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 OPMV Linked Data on the Web. April 16, Lyon, France 9

10 prov:wasattributedto prov:agent < < Forecast Of Lyon prov:activity prov:entity prov:used _:b0 < prov:startedat prov:wasgeneratedby " T 11 : 0 0 : 0 0 " ^ ^ x s d : d a t e T i m e Linked Data on the Web. April 16, Lyon, France 10

11 < prv:immutable Forecast Of Lyon at 10am prov:wasattributedto prv:datacreation prv:useddata _:b0 prv:completedat prv:createdby prov:agent < < prov:entity " T 10 : 0 0 : 0 0 " ^ ^ x s d : d a t e T i m e prov:wasattributedto < prov:agent < prv:immutable Forecast Of Lyon at 11am prv:datacreation prv:useddata _:b1 prv:completedat prv:createdby < prov:entity " T 11 : 0 0 : 0 0 " ^ ^ x s d : d a t e T i m e Linked Data on the Web. April 16, Lyon, France 11

12 Trust Provenance Provenance Vocabulary Vocabulary Provenance Provenance Access Access Provenance Provenance Representation Representation Provenance Provenance Semantics Semantics Linked Data on the Web. April 16, Lyon, France 12

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 don't cache it locally? Linked Data on the Web. April 16, Lyon, France 13

14 WG release expected April 19 Look out to: Linked Data on the Web. April 16, Lyon, France 14

15 Provenance Tutorial International Provenance and Annotation Workshop (IPAW 2012) Santa Barbara, California June 19, WG Updates SWPM Workshop at ESWC2012 Heraklion, Greece May 27, Linked Data on the Web. April 16, Lyon, France 15

16 These slides have been created by Jun Zhao and Olaf Hartig This work is licensed under a Creative Commons Attribution-Share Alike 3.0 License ( Linked Data on the Web. April 16, Lyon, France 16